Which is the approximate solution for the system of equations
8x-10y=-28 and 9x+10y=-16?
A(-2.3, 0.5)
B(-2.5, 1)
C(-2.3, 0.5)
D(-2.5, -1)
Answers
Step-by-step explanation:
work is shown and pictured
Related Questions
Please help ASAP!
Rearrange the equation so x is the independent variable. -5x - 4y = -8
Answers
Answer:
Hey there!
Original Equation
-5x-4y=-8
Multiply by -1
5x+4y=8
Subtract 4y
5x=8-4y
Divide by 5
x=(8-4y)/5
Let me know if this helps :)
Answer:
x = -4/5y + 8/5
Step-by-step explanation:
So to single out x we use the communicative property,
its the moving of numbers and variables to each side of the equation.
So we have,
-5x - 4y = -8
+4y
-5x = 4y - 8
Divide -5 by both sides,
x = -4/5y + 8/5
Thus,
the equation rearanged is x = -4/5y + 8/5.
Hope this helps :)
HELP PLS ASAP!! The point (–5, –9) was reflected over an axis to become the point (5, –9). Which axis was it reflected over? Explain.
A. x-axis, because the x-coordinate is the opposite
B. x-axis, because the y-coordinate is the opposite
C. y-axis, because the x-coordinate is the opposite
D. y-axis, because the y-coordinate is the opposite
Answers
Answer:C
Step-by-step explanation: -5, -9 would be on the bottom left. 5, -9 would be on the bottom right of the graph
Answer: c
Step-by-step explanation:
HELPPPPP PLS!!!!!!!!!
Answers
Answer:
its 27 but its not there so is
1. no
2.no
3.no
4.no
Step-by-step explanation:
plase give me brailiest
do the HCF and the LCM of A and B pls
Answers
Hcf- 1620
Lcm- 145800
Answer:
Answer = LCM is 2 and HCF is 3
Step-by-step explanation:
LCF step by step: if you break the 2 numbers down it would look like this 2*2*2*3*3*3*3*3*3*5*5
HCF step by step: same thing with HCF find the most numbers
At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.
Ketchup Relish Chili
54 36 60
Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042
Answers
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Answer:
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Step-by-step explanation:
Explain the cosine rule and sine rule while also saying how to use it and provide examples (keep it in simple terms)
Answers
Answer:
Sure, I'll explain the cosine rule and sine rule in simple terms:
The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.
Here's an example of how to use the cosine
Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.
Using the cosine rule:
a^2 = b^2 + c^2 - 2bc * cosA
where A is the angle opposite side a, we can plug in our values and solve for a:
a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)
a^2 = 64 + 36 - 96 * 0.707
a^2 = 10.56
a = sqrt(10.56)
a = 3.25 (rounded to two decimal places)
Therefore, the length of side a is approximately 3.25 units.
Answer:
Step-by-step explanation:
ackie cut a piece of paper along its diagonal, as shown below, forming two triangles. A rectangle is cut diagonally to form 2 equal triangles. How do the height and base length of the two triangles compare to the height and base length of the original piece of paper?
Answers
Answer: The height and base length are the same as the original paper.
Step-by-step explanation: It is hard without the picture. But if they cut it from corner to corner, then this is the answer.
Answer:
A. The two dimensions are the same in the triangles as they were in the rectangle.
Step-by-step explanation:
i think its this, sorry if im wrong
Evaluate: 2(x2+6)−3 y√ 2 ( x 2 + 6 ) - 3 y when x = 3 and y = 64.
Answers
Answer:
−4234.93506
Step-by-step explanation:
2(3^2+6)−(3)(64)√2(3^2+6)−(3)(64)
=−4234.93506
Not sure if this is right, but hope this helps.
Answer:
it's 6
Step-by-step explanation:
What is the total area, in square feet, of the shaded sections of the trapezoid below?
Answers
Answer: 28 square feet
Explanation: To get the area of a triangle, the formula is base×height×(1/2)
First triangle, you would multiply 4.5 by 5 and multiply that by 1/2. 4.5×5×1/2= 11.25 square feet
Then multiply 6.7×5×1/2 to get the area of the second triangle, which =16.75 square feet
Lastly, add the areas together:
11.25+16.75=28 square feet
Recent statistics have reported that the total area of Brazil is about 3 × 10^6 square miles, while the total area of Japan is about 2 × 10^5 square miles.
Create and solve an equation that can be used to find about how many times larger the area of Brazil is than the area of Japan.
Answers
Answer:
195500000
Step-by-step explanation:
Population density
Population density of Brazil and Peru are equal
Thus,
Total population of any area million square kilometer people per square kilometer
miilion
Brazils area = 3 x 10^6 = 3000000 square miles
Japans area = 2 x 10^5 = 200000 square miles
Now we can divide Brazils area by Japans area, to find out how many times bigger Brazil is than Japan:
3000000 / 20000 = 15
Brazil is 15 times larger than Japan.
I'm stuck can you guys help plssss
Answers
Answer:
Iam sorry
Step-by-step explanation:
I don't know the answer
-24b+4b
Compute and Simplify.
Answers
you need to add the positive common factors (4b and -24b)
4. At Rory’s school, students must join one after-school club. Based on the data in Graph #2, which club attracted about 30% of students?
A. yearbook
B. art
C. drama
D. hiking
E. running
F. science
5. Approximately What percent of students chose not to join the yearbook club?
A. 15%
B. 30%
C. 75%
D. 85%
E. 90%
6. About what percent of students joined the art club?
A. 30%
B. 25%
C. 20%
D. 15%
E. 5%
Answers
HELPP!!! Isn't one of the answers supposed to be 3?????
Answers
Step-by-step explanation:
well, it is supposed to be -3.
but you are right. something is wrong or missing here.
5x + 3 = 4x
x + 3 = 0
x = -3
maybe a "+ 1" is missing on the right side ?
5x + 3 = 4x + 1
gives us
x = -2
Find five rational numbers between -1/2 and 2
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Find the Surface Area of the prism pleese
Answers
Hope this helps!
The total cost of an item, the price plus tax, can be calculated using the expression shown in the box, where p is the price of the item.
1.0725p
What is the tax rate as a percentage?
0.0725%0 point 0 7 2 5 percent
0.725%0 point 7 2 5 percent
7.25%7 point 2 5 percent
72.5%
Answers
Answer:
the ans
Step-by-step explanation:
72.5%
Please help me with this yall
Answers
I tried plotting it to make it readable but copy it off I put down the letters for you.
Step-by-step explanation:
Distance from A-B = 4
Distance from B-C = 3
C-D = 4
D-E = 9
E-F = 8
F-A = 6 total = perimeter = 34 units
Here is the drawn-in figure from Ameliahunt42:
Select ALL expressions that are equivalent to -6. *
-7 + 13
-10 - (-4)
26 - 32
16 - 10
3 - ( - 3)
Answers
Answer:
The terms equivalent to - 6 are
- 10 - ( - 4)
26 - 32
Answer:
Only the 2nd and 3rd expressions are equal to -6
Step-by-step explanation:
The only way to do this is evaluating ot actually doing each expression:
Some key skills needed are subtraction with negative numbers, distributing the negative properly, and addition.
The first one is -7+13. This can be rewritten as 13-7. And this is 6, so it is not equal to -6. The 2nd one is -10-(-4). You have to distribute that minus sign after the -10 to the -4. Think of the subtraction symbol I mentioned as -1. -1(-4) is 4 since the negative signs cancel out. It would then be -10 + 4 which -6. So this works. This one is 26 - 32. You have to subtraction here. 26 - 32 is the opposite of 32 - 26. 32 - 26 is 6, so 26 - 32 would be -6. So the 3rd one is another one eqial to -6. This is simple subtraction. 16 - 10 is 6, so this one definitely does not work. This uses the same skill as number 2. Think of the minus sign after the positive 3 as a -1. -1(-3) is 3, so it would be 3 + 3 which is 6.Only the 2nd and 3rd ones work. Hope you understood and have a nice day!!
Here is a circle with center H and some line segments and curves joining points on the circle.
pleas answer these questions
Answers
Answer:
here it is below!
Step-by-step explanation:
Find a function rule for the line that passes through the points (1, 1) and (-1, -1).
What is the slope of the line that passes through these two points?
Answers
Answer:
-1 bc its only using the number 1
I hope it’s right lol
1. -2b+9-(-5b)
2.y+12-(5y)-(3y)
3.0.3z -13-4z+6.7
4.-5.2+8.2-7.8
5.-9c-(-2)-(12c)-(5)
please show work
Answers
Triangle NGM is reflected across the x-axis, and is dilated by a factor of
\(2 \frac{1}{2} \)
what are the coordinates of vertices N'G'M'
![Triangle NGM is reflected across the x-axis, and is dilated by a factor of [tex]2 \frac{1}{2} [/tex]what](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/72KqTh42y5ufcNCXgnAIojzv21Q5WAGP.jpeg)
Answers
The coordinates of vertices N'G'M' are N'(-10, -15), M'(-15, -5) and G'(-5, -10).
From the given graph, N(-4, 6), M(-6, 2) and G(-2, 4).
Scale factor = \(2\frac{1}{2}\)
= 2.5
The reflection of point (x, y) across the x-axis is (x, -y).
Here, N(-4, 6)→(-4, -6)
M(-6, 2)→(-6, -2)
G(-2, 4)→(-2, -4)
Now, with scale factor 2.5, we get
(-4, -6)→2.5(-4, -6)→N'(-10, -15)
(-6, -2)→2.5(-6, -2)→M'(-15, -5)
(-2, -4)→2.5(-2, -4)→G'(-5, -10)
Therefore, the coordinates of vertices N'G'M' are N'(-10, -15), M'(-15, -5) and G'(-5, -10).
To learn more about the reflection over x-axis visit:
https://brainly.com/question/15175017.
#SPJ1
The altitude at which we boil an egg affects how long it takes for the egg to achieve perfect hardness. It takes 198 seconds to boil a perfect egg at the lowest place possible, the edge of the Dead Sea, which has an altitude of −418 meters. The highest place possible is the summit of Mount Everest which has an altitude of 8848 meters. It takes 209 seconds to boil a perfect egg there. T(a) models the time (in seconds) it takes to boil a perfect egg at an altitude of a meters. Which number type is more appropriate for the domain of T? What's the appropriate domain?
Answers
Answer:
198
Step-by-step explanation:
198
Please Help
Solve for x
in the picture
Answers
Answer:
C. x=23
Step-by-step explanation:
180=(5x+11)+54
A map has a scale of 1 cm: 5 km. Determine how far apart two cities are if they are 8 cm apart on the map.
A. 1/5 = 8/x
B. 1/x = 5/80
C. 1/5 = 80/x
D. 1/x = 8/5
Answers
Answer:
A
Step-by-step explanation:
Let's set up two ratios...
1 cm : 5km
8 cm : x km
Therefore the answer is A
I beg you, HELP MEEEE!!!!! One spinner is divided into four equal sections numbered 1 to 4. A second spinner is divided into five equal sections numbered 5 to 9. How many total outcomes are there if both spinners are spun?
13
9
20
36
Answers
Answer:
9 is the correct answer
The figure below shows the dimension of an arrow pointed on the pavement of a parking lot. The entire length of the arrow is 8.5 feet. What is the area of the arrow?
A. 20 sq ft.
B. 21 sq ft.
C. 26.75 sq ft
D. 25.5 sq ft
Answers
The table shows the multiplication of two linear expressions. Select the correct reason for each step.
Reason 1:
Reason 2:
Reason 3:
Reason 4:
Answers
Answer:
Step-by-step explanation:
reason 1:
opening of brackets to solve the expression
reason 2:
in multiplication order is followed i.e. the number always lead the variable in the expression
reason 3:
for clarification brackets are added to multiply like terms i.e. numbers with numbers and variable with the variable
reason 4:
the solved and simplified expression is delivered as a result
Solve the equation 5.25x + 6 = 74.25. Enter your answer in the box.
x =
Answers
Answer:
x=14.1428571 or simplified x=14.14
Step-by-step explanation:
5.25x+6=74.25
-6 -6
_______________
5.25x=74.25
(divide both side by 5.25)
x= 14.1428571 or simplified x=14.14
Answer:
13
Step-by-step explanation: