Answers
Answer:
2
Step-by-step explanation:
Answer:
-2
Step-by-step explanation:
so 2x1=2 so -2x-1=2
if its wrong i dont now cause im silly
Related Questions
Find the area of the triangle.
b ft
h yd
Question content area bottom
Part 1
The area of the triangle is
enter your response here or
enter your response here .
Answers
The area of the triangle is 52.32 square units
Finding the area of the trianglefrom the question, we have the following parameters that can be used in our computation:
The triangle (see attachment)
The base of the triangle is calculated as
base = 12 * tan(36)
The area of the triangle is then calculated as
Area = 1/2 * base * height
Where
height = 12
So, we have
Area = 1/2 * base * height
Substitute the known values in the above equation, so, we have the following representation
Area = 1/2 * 12 * tan(36) * 12
Evaluate
Area = 52.32
Hence, the area of the triangle is 52.32 square units
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Solve: 3(2d - 1) – 2d = 4(d– 2) + 5
Answers
The right answer is No solution.
Look at the attached picture
Hope it will help you
Janice is standing 15m form the base of a building. From the point where she is standing, the angle of elevation of the top of the building is 32 degrees. How tall is the building, to the nearest tenth of a metre?
Answers
Answer:
the building is 28m
Step-by-step explanation:
0=9 means no solution one solution or infinite solution?
Answers
Answer:
no solution
Step-by-step explanation:
If you end up with a false equality, then the initial statement is false, meaning that there are no solutions.
A box can be filled completely using 16 layers of 7 units cubes. What is the volume of
the box?
Answers
The volume of the box is 112
Volume can be described as the amount/quantity of space that an object occupies.
The box is completely filled with 16 layers and 7 unit cubes. Hence the volume can be calculated as follows
= 16 × 7
= 112
Hence the volume of the box is 112
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The probabilty of being born a male is 0.466. The probabilty of being born in north america is 0.153846. The probabilty of being born in an urban location is 0.3571428. Find the exact probabilty that a baby will be born a male, in North America, in an urban location
Answers
Answer:0.0256
Step-by-step explanation:
Given
Probability of being a male is \(P_1=0.466\)
Probability of being born in america is \(P_2=0.153846\)
Probabilty of being born in an urban location is \(P_3=0.3571428\)
So probabilty of that a baby will be born a male,in North america, in an urban area=P
Since, \(P_1, P_2, P_3\) are independent of each other therefore
\(P=P_1\times P_2\times P_3\)
\(P=(0.466)\times (0.153846)\times (0.3571428)\)
\(P=0.02560\)
Is there anyone that can please help me out with this question as soon as possible?
Answers
Answer:
1. -3 × Equation [A1] --> Equation [B1]
2. 7 × Equation [B2] + Equation [B1] --> Equation [C1]
Step-by-step explanation:
There isn't a very elegant way to do this, you just need to brute force it a little and see which options are completely unreasonable and can be skipped. This is what I managed to figure out:
1. -3 × Equation [A1] --> Equation [B1]
6x × -3 = -18x
-7y × -3 = 21y
14 × -3 = -42
2. 7 × Equation [B2] + Equation [B1] --> Equation [C1]
(4x × 7) + -18x = 28x - 18x = 10x
(-3y × 7) + 21y = -21y + 21y = 0y
(-4 × 7) + -42 = -28 - 42 = -70
I can try to explain more about how I got those if you want, but like I said, there isn't much of a method to it other than trial and error.
Which function goes with which statement??
It wanted me to Drag the tiles to make each statement true.
Answers
Answer:
A - linear
B - exponential
C - inverse variationn
Step-by-step explanation:
when u, v are nonzero vectors, then span{u, v} contains the line through u and the origin, as well as the line through v and the origin.
Answers
The span of the two vectors is the set of all linear combinations of the two vectors. This means that any point on the line through u and the origin, as well as any point on the line through v and the origin, can be written as a linear combination of u and v.
1. Start by taking two non-zero vectors u and v.
2. The span of the two vectors is the set of all linear combinations of the two vectors, which means that any point on the line through u and the origin, as well as any point on the line through v and the origin, can be written as a linear combination of u and v.
3. Therefore, span{u, v} contains the line through u and the origin, as well as the line through v and the origin.
The span of two non-zero vectors u and v contains the line through u and the origin, as well as the line through v and the origin. Any point on these two lines can be written as a linear combination of u and v.
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In recent survey, a school district randomly dialed 300 parent phone numbers and asked whether the family read to their toddlers at least three nights per week. 271 of the parents said that they did.
(a) Nationally , 72% of families read to their toddlers at least three nights per week. Does this data provide evidence that more parents at this district read to their children than the national average ? Show all steps in your process.
(b) Name two likely sources of bias in this survey. Write one sentence to explain each.
Answers
Answer:
a) We reject H₀ we have enough evidence for that
b) 1.-The survey was made over a district, results will surely be different if the survey is carried out over a whole state ( considering urban and rural areas)
2.-In a district we find an equalized level of salaries, which could be associated with a similar level of habits
Step-by-step explanation:
We have to develop a proportion test. One tail-test
Population proportion mean (national proportion) p₀ = 72 %
Sample information
sample proportion 271/300 p = 0,90 p = 90 %
We assume Confidence Interval 90 % then α = 0,1
Test Hypothesis
Null Hypothesis H₀ p = p₀
Alternative Hypothesis Hₐ p > p₀
As α = 0,1 and
We look at z-table for z(c) and find z(c) = 1,28
And we compute z(s) as
z(s) = ( p - p₀ ) √ (p₀q₀/n
z(s) = ( 0,9 - 0,72 ) /√(0,72)*(0,28)/300
z(s) = 0,18 / √0,1296/300
z(s) = 0,18/ 0,026
z(s) = 6,92
z(s) > z(c) 6,92 > 1,28
As z(s) is bigger than z(c), z(s) is in the rejection region, so we reject the null hypothesis. We have enough evidence to claim that the proportion in the district is bigger than the national one.
b)1. The survey was made over a district, results will surely be different if the survey is carried out over a whole state ( considering urban and rural areas)
2.-In a district we find an equalized level of salaries, which could be associated with a similar level of habits
Wanda Earned $350 babysitting over the months of July and August. She earned $90 more in August than in July. How much did she earn babysitting in July? In August?
Answers
Answer:
I think on July 350$ and on August 440$ Hope it helped!!
Step-by-step explanation:
Arrange the steps from start to finish to factor this expression using the grouping method.x² - 5x- 24Drag the tiles to the correct boxes. Not all tiles will be used.
Answers
we have the expression
x² - 5x- 24
step 1
x² +3x-8x-24
step 2
(x² +3x)+(-8x-24)
step 3
x(x+3)-8(x+3)
step 4
(x+3)(x-8)
Somebody can help me
Answers
Answer:
Add 4 linear
Multiply by 3/2 exponential
Multiply by 1/2 exponential
Add -10 linear
Step-by-step explanation:
Look at what you need to do to the y value to get the next y value. Linear is when you add and exponential is when you multiply.
Find the product of (0.7) 104 and 2.
O 1.4x104
O 1.4x10²
O 0.14x104
O 14x104
Answers
Step-by-step explanation:
1.4 × 104
i.e (0.7 × 2) × 104
= 1.4 × 104 ≈ 145.6
In a survey of 2500 registered voters, 1900 of them said that they plan to vote in the next presidential election. Let p denote the proportion of all registered voters who plan to vote. Find the 95% confidence interval for p.
Answers
This can alternatively be written as 0.74 < p < 0.78
========================================================
Explanation:
n = 2500 = sample size
x = 1900 = number of successes = number who plan to vote
phat = x/n = 1900/2500 = 0.76
phat is the sample proportion that estimates the population proportion p.
At 95% confidence, the z critical value is roughly z = 1.96 which you use a table or calculator to find this value (or it's something you memorize).
E = margin of error
E = z*sqrt(phat*(1-phat)/n)
E = 1.96*sqrt(0.76*(1-0.76)/2500)
E = 0.016742 approximately
The lower bound (L) of the confidence interval is
L = phat - E
L = 0.76 - 0.016742
L = 0.743258
L = 0.74
The upper bound (U) of the confidence interval is
U = phat + E
U = 0.76 + 0.016742
U = 0.776742
U = 0.78
The values of L and U are approximate.
The confidence interval in the format (L, U) would be (0.74, 0.78) approximately.
Another way to write the confidence interval is to say 0.74 < p < 0.78 as it's in the form L < p < U; showing that we're 95% confident that p is somewhere between 0.74 and 0.78
In other words, we're 95% confident that between 74% and 78% of the population would plan to vote in the next presidential election.
Please help i need it!!!!!
A 6 N crate is lifted 2 meters. How much work is done?
A) 12 N/m
B) 4 N/m
C) 8 N/m
D) 3 N/m
Answers
The amount of work done is Option A) 12 N/m
What is work done?Work done is simply defined as the product of the magnitude of displacement, (d) and the component of the force that in the direction of displacement.
It measures energy transfer that occurs when an object is moved to a distance by an external force which is applied in the direction of the displacement.
Work done on a body is equivalent to the increase in the energy of the body, because it transfers energy to the body.
The formula for work done is;
W = fd
Where, 'f' is the applied force and d is the distance
Substitute the values
Work done = 6(2)
Work done = 12 N/m
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si ABCD son los vertices de un cuadrado y A(2,2) y C (10,8) 2 vertices opuestos. Hallar los otros dos vertices, dar como respuesta la mayor de las ordenadas
Answers
The area of the square is given as 100 square unit
How to determine the area of square?You should be aware that the square has all its sides equal
The perpendicular from opposite vertices represent distance
The given vertices are
(2,2) and (10,8)
Using the formula for distance between two points
d=√(10-2)²+(8-2)²
d=√8²+6²
d = √64+36
d=√100
This implies that d=10
The area of a square is given as s²
Area = 10²
Atrea = 100 square units
In conclusion, the area of the square is 100 square units
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Translated question:
The vertices of a square ABCD are A(2,2) and B(10,8), Find the area of the square
In the beginning of BS 2077, Dolma deposited Rs 1,20,000 in her account at the rate of 9% p.a. If she paid 5% of her interest as income tax, how much total amount did she receive in the beginning of BS 2080
Answers
Dolma received a total amount of Rs 1,29,260 at the beginning of BS 2080.
Given:
Principal amount (P) = Rs 1,20,000
Interest rate (R) = 9% per annum
Income tax rate (T) = 5% of the interest earned
First, we calculate the interest earned
Interest (I) = P x R/100
= 1,20,000 * 9/100
= 10,800
Next, we calculate the income tax
Income Tax = I x T/100
= 10,800 x 5/100
= 540
Now, Total amount = P + I - Income Tax
= 1,20,000 + 10,800 - 540
= Rs 1,29,260
Therefore, Dolma received a total amount of Rs 1,29,260 at the beginning of BS 2080.
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The one-to-one functions g and h are defined as follows.g(x) = -2x-13h=(-7 -2) (8)12I
Answers
We have to remember that in one-to-one functions each element of the domain maps to a different element in the range.
When we have a bijection we have that each element in the set A, for example, corresponds to exactly one element of B, and vice versa.
When we have a bijection, we also have an inverse function.
Then, we have that:
\(g(x)=-2x-13\)To find the inverse, we have to interchange the variables:
\(y=-2x-13\)Now, we have:
\(x=-2y-13\)And we need to solve for y:
1. Add 13 to both sides of the equation:
\(x+13=-2y-13+13\Rightarrow x+13=-2y\)2. Divide both sides by -2:
\(\frac{(x+13)}{-2}=\frac{-2y}{-2}\Rightarrow-\frac{(x+13)}{2}=y\)Then, we have that:
\(g^{-1}(x)=-\frac{(x+13)}{2}\)We can check this if we make a composition between the two functions (then we will get x as a result).
\((g^{-1}\circ g)=g^{-1}(g(x))=-\frac{((-2x-13)+13)_{}}{2}=-\frac{(-2x)}{2}=\frac{2x}{2}=x\)Then, we have that the result for this composition is equal to x. Thus:
\((g^{-1}\circ g)(-3)=-3^{}\)We also have that:
We have that h(4) = 3, then h^(-1)(3) = 4 or
\(h(4)=3\Rightarrow h^{-1}(3)=4\)In summary, we have:
\(g^{-1}(x)=-\frac{(x+13)}{2}\)\((g^{-1}\circ g)(-3)=-3\)\(h^{-1}(3)=4\)
Parker has 12 blue marbles. Richard has 34
of the number of blue marbles that Parker has.
Part A
Explain how you know that Parker has more blue marbles than Richard without completing the multiplication.
Enter equal to, greater than, or less than in each box.
Multiplying a whole number by a fraction
less than
1 results in a product that is
the original whole number.
Part B
How many blue marbles does Richard have? Enter your answer in the box.
blue marbles
Answers
I need help with this what is the awnser
Answers
Answer:
x = 23
Step-by-step explanation:
For this figure, we know we are dealing with a 90 degree angle since there is a small square in the figure, therefore we can set up the equation...
65 + (x + 2) = 90
In this sense, the parenthesis are unnecessary.
67 + x = 90
-67 -67
x = 23
Hope this helps!
:)
help fast pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answers
Answer:
40 x 18 = 720
Step-by-step explanation:
Hope this is what you need! =)
he roots of the function f(x) = x2 – 2x – 3 are shown. What is the missing number?
x = –1 and x =
Answers
Factorise the given expression compleyely.
1. 2x(4-7)+(-7+4)
Answers
Answer:
The answer is:-
(2x+1)(4-7)
11. What is the unknown number in
Sequence 2 in the chart?
Sequence Number
Sequence 1
Sequence 2
A 126
B 127
c 147
D 154
2 3 5
7
14 21 35 49
?
1
7
21 42 63 105
Answers
The missing number in Sequence 2 is 780.
To find the missing number in Sequence 2, let's analyze the pattern:
In Sequence 1, the numbers increase by 1 each time: 126, 127, 128, 129, ...
In Sequence 2, the numbers seem to follow a pattern where each number is obtained by multiplying the corresponding number in Sequence 1 by a certain factor:
2 x 126 = 252
3 x 127 = 381
4 x 128 = 512
5 x 129 = 645
...
Looking at this pattern, we can see that the missing number in Sequence 2 should be:
6 x 130 = 780
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Maya’s unpaid balance is $205.16. Her APR is 14.4% and she has $82.10 in new transactions. What is her new balance? Responses $289.72 $289.72 $290.71 $290.71 $316.80 $316.80 $533.45
Answers
Based on the information given the new balance is $289.72.
New balanceFirst step is to calculate the finance charge
\(\text{Finance charge}=205.16\times(0.144\div12 \ \text{months})\)
\(\text{Finance charge}=205.16\times0.012\)
\(\text{Finance charge}=2.46\)
Second step is to calculate the New balance
\(\text{New balance}=205.16+2.46+82.10\)
\(\text{New balance}=\bold{\$289.72}\)
In conclusion, the new balance is $289.72.
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easy problem for points
Answers
Answer:
0.5294117647
Step-by-step explanation:
Answer:
52.94117647 %
0.52941176
Step-by-step explanation:
HELP PLEASE will mark brainliest
Eighteen middle-aged women with platelet readings between 120,000 platelets per microliter and 150,000 platelets per microliter of blood were selected randomly from the population of similar female patients at a large local hospital. Nine of the 18 women were assigned randomly to group A and received a placebo. The other nine women were assigned to group B and received a new platelet drug. After four months, posttreatment platelet readings were taken for all 18 women and were compared with pretreatment readings. The reduction in platelet level (Pretreatment reading − Posttreatment reading) for each woman in the study is shown here.
Group A (placebo) increase (in platelets per microliter): 2,000, 5,000, 7,050, 10,125, 12,345, 17,350, 13,250, 12,200, 9,125
Group B (platelet drug) increase (platelets per microliter): 28,450, 23,438, 36,380, 12,450, 16,100, 21,350, 39,400, 41,000, 14,325
Create and interpret a 95% confidence interval for the difference in the placebo and the new drug.
Answers
The blood platelet count is an illustration of normal distribution,
Approximately 95% of the data lies within 2 standard deviations of the mean.
There are approximately 99.7% of women with platelet count between 65.2 and 431.8.
Given parameters are:
μ = 248.5
σ = 61.1
(a) The percentage within 2 standard deviation of mean or between 126.3 and 370.7,
Start by calculating the z-score, when x = 126.3 and x = 370.7
Z = x-μ / σ
Therefore,
Z = 126.3-248.5/61.1
Z = -2
Also,
Z = 370.7-248.5/61.1
Z = 2
The empirical rule states that:
Approximately 95% of the data lies within 2 standard deviations of the mean.
Hence, there are approximately 95% of women with platelet count within 2 standard deviations of the mean.
(b) The percentage with platelet count between 65.2 and 431.8
Start by calculating the z-score, when x = 65.2 and x = 431.8
Z = 65.2-248.5/61.1
Z = -3
And,
Z = 431.8-248.5/61.1
Z = 3
The empirical rule states that:
Approximately 99.7% of the data lies within 3 standard deviations of the mean.
Hence, there are approximately 99.7% of women with platelet count between 65.2 and 431.8.
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Its factorial math pleaseHelp.
Answers
\(\dfrac{7!4!}{5!3!}=6\cdot7\cdot4=168\)
A plane flew to its destination 300 miles away. With a tail wind, the flight took 5/6 of an hour. The return
trip, with a head wind, took 1 hour. Find the speed of the wind and the speed of the plane.
Thank youu
Answers
Answer:A plane flew to its destination 300 miles away. With a tail wind, the flight took 5/6 of an hour. The return trip, with a head wind, took 1 hour....
Step-by-step explanation: