Sally babysits for 3 hours on weekdays and charges $10 per hour. If she babysits for 65 days total, how much will she make?

Answer:

60

Step-by-step explanation:

Answer:

the area is 60m

Step-by-step explanation:

10 x 6 = 60

Brainliest Please!!??!!!!!!!!

Answer:

1.7 meters

Step-by-step explanation:

because an equilateral triangle has 3 sides and they are all the same you can just divide 5.1 by 3

5.1 / 3 = 1.7

it is 1.7 m

Answer:

x are sides of the traingle

5.1 = 51upon10 51/10

51 upon 10 =3x

3x = 51 upon 10

x= 3/51 upon 10 =

x= 3*10upon 51

=10upon 17

side of the traingle is 10/17

Step-by-step explanation:

Answer:

2490

Step-by-step explanation:

The 2 shapes are triangle and trapezoid

Area of a triangle formula: A= h×b/2

A=40×62/2

A=1240

Area of a trapezoid formula: base¹+base²/2×height

A= 38+62/2×25

A=1250

Add both areas together

1250+1240=2490

Answer:

x = 7

y = 2

Step-by-step explanation:

In the above question, we are given 2 equations which are simultaneous. To solve this equation, we have to find the values of x and y

x + 3y = 13 ........ Equation 1

x - y = 5...........Equation 2

From Equation 2,

x = 5 + y

Substitute 5 + y for x in Equation 1

x + 3y = 13 ........ Equation 1

5 + y + 3y = 13

5 + 4y = 13

4y = 13 - 5

4y = 8

y = 8/4

y = 2

Since y = 2, substitute , 2 for y in Equation 2

x - y = 5...........Equation 2

x - 2 = 5

x = 5 + 2

x = 7

Therefore, x = 7 and y = 2

Answer:

Step-by-step explanation:

The total surface area includes:

The area is:

Answer: 96

Step-by-step explanation: Its pretty simple all you have to do is 32*3 because there is 32 people and they all drink 3 cups fruit punch. SO the answer is 96.

The gallons of punch Brenda's mom needs to buy is  6 gallons.

The first step is to convert cups to gallons: 1 cup = 1/16 gallon

The second step is to determine the total number of cups needed for the party: 32 x 3 = 96 cups

Now convert the cups to gallons: 96 x 1/16 = 6 gallons

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a) A 2*2 area model would not work to multiply (x + 3)(2x⁴ − 3x³ − 2x² − 4x − 1) because this expression has 5 terms, and a 2*2 area model can only accommodate 4 smaller areas (b) The area model for (x + 3)(2x⁴ − 3x³ − 2x² − 4x − 1) with the correct lengths and widths labeled has been attached below. (c) The final total area is 2x² - 10x - 15.

An area model is a way to visualize multiplication by breaking up the larger rectangle into smaller rectangles whose areas represent the products of the terms being multiplied. To determine the correct rows and columns for the area model, we count the number of terms in each factor and use that as a guide. For example, if one factor has 3 terms and the other has 4 terms, we would use a 3x⁴ area model, with 3 rows and 4 columns.

a) A 2*2 area model would not work to multiply (x + 3)(2x⁴ − 3x³ − 2x² − 4x − 1) because this expression has 5 terms, and a 2*2 area model can only accommodate 4 smaller areas.

b) The area model for (x + 3)(2x⁴ − 3x³ − 2x² − 4x − 1) with the correct lengths and widths labeled has been attached below.

   2x⁴ − 3x³ − 2x² − 4x − 1

 +---------------------------------------

x  |   2x⁵    -3x⁴    -2x³    -4x²   -x

 |

3  |   6x⁴    -9x³    -6x²    -12x    -3

 +---------------------------------------

c) To find the total area of a rectangle with length (x + 8) and width (x − 5), we can use an area model with 2 rows and 2 columns. The length (x + 8) corresponds to one dimension of the rectangle, while the width (x − 5) corresponds to the other dimension. The area of each smaller rectangle in the model represents the product of one term from each factor.

    x + 8      x - 5

 +--------------------

x  |  x² + 8x   x² - 5x

 |

-5 | -5x + -40   -5x + 25

 +--------------------

The final total area can be found by adding up the areas of the smaller rectangles:

Total area = x² + 8x + x² - 5x - 5x - 40 + 25

= 2x² - 10x - 15

= 2x² - 10x - 15.

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Answer:

×=-2+12/2,the anwser is ×=5,×=-7

Answer:

x = 23

Step-by-step explanation:

If the sum of angles is equal to 180 then we can write and equation to find the value of x

5x + 10 + 55 = 180 add like terms

5x + 65 = 180 subtract 65 from both sides

5x = 115 divide both sides by 5

x = 23

We were told that the car travels 360 miles in 8 hours.

Recall that

Speed = distance/time

Speed of the car = 360/8 = 45 miles per hour

Since the speed is constant, it means that the constant speed of the car is 45 miles per hour.

Also,

Time = distance/speed

For the car to travel 168 miles,

Time = 168/45

= 3.73 hours

The time taken to cover 168 miles is 3.73 hours.

It is given in the question,

Distance = 360 miles

Time = 8 hours

We have to find the speed of the car,

We will use the formula,

Speed = Distance / Time

Speed = 360 / 8

Speed = 45 miles/hours.

Since the speed is constant,

We have to find time,

Time = Distance / Speed

Time = 168 / 45

Time = 3.73 hours.

Therefore, the time taken to cover 168 miles is 3.73 hours.

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The term is called an identity element. In multiplication, the identity element is one because any number multiplied by one results in the same number. In addition, the identity element is zero because any number added to zero results in the same number.

The term in mathematics for the operation or number that leaves others unchanged when combined with them is called the identity element.

It is also known by the name of neutral element.

In multiplication, the identity element is one (1) because when you multiply a number by one the result remains the same as the original number. For any number a,

a1=1a=a.

While in addition, the identity element is zero (0) because when you add zero to a number, the result remains the same as the original number. For any number a,

a+0=0+a=a.

There is no identity element for subtraction, and division only has an identity element for certain sets.

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Answer:

(1,1), (1,2), (2,1), (2,2)

Step-by-step explanation:

Answer:I would think the inequality would look like 2+x<14

Answer:

2 + n < 14

Step-by-step explanation:

The parametric equations for the line are:

x = -4 + t

y = 2 + 2t

z = 3 + xt where t is the parameter that represents the position along the line.

To find the parametric equations for the line through the point (-4, 2, 3) and parallel to the line with direction vector (1, 2, x), we can use the following approach:

Let's denote the parametric equations as:

x = x₀ + at

y = y₀ + bt

z = z₀ + ct

We know that the line is parallel to the vector (1, 2, x). Since the line is parallel, the direction ratios (a, b, c) will be the same as the direction ratios of the given vector.

So, we have:

a = 1

b = 2

c = x

Now, we need to determine the initial point (x₀, y₀, z₀) on the line. Since the line passes through (-4, 2, 3), we can assign these values as the initial point:

x₀ = -4

y₀ = 2

z₀ = 3

Therefore, the parametric equations for the line are:

x = -4 + t

y = 2 + 2t

z = 3 + xt

where t is the parameter that represents the position along the line.

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Answer:

110 hope u get a good grade:) add me on ig welia.martinez

.

Step-by-step explanation:

Answer:

35

Step-by-step explanation:

60/100 x 21/x

60x    x     2100

60/60      2100/60

x=35

What is the actual question?

You will reject the null hypothesis if your sample average is in the area of the null hypothesis sampling distribution called alpha.

In summary, to reject the null hypothesis, the sample average needs to fall in the area of the null hypothesis sampling distribution known as alpha.

To explain the answer, hypothesis testing involves comparing a null hypothesis (the statement being tested) with an alternative hypothesis. In this scenario, the null hypothesis states that the average number of screaming 12-year-olds at Ariana Grande concerts is equal to the known population average of screaming 12-year-olds at Drake concerts.

To make a decision about the null hypothesis, we calculate the sample average from data collected at Ariana Grande concerts. We then compare this sample average to a predetermined significance level called alpha.

If the sample average falls within the critical region, which is determined by alpha, we reject the null hypothesis. The critical region represents extreme values that would be unlikely to occur if the null hypothesis were true.

Therefore, if the sample average is in the area of the null hypothesis sampling distribution called alpha, we reject the null hypothesis, indicating that there is a significant difference between the average number of screaming 12-year-olds at Ariana Grande concerts and the known population average at Drake concerts.

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The complete question is :

Suppose you are testing the null hypothesis that the average number of screaming 12 year-olds at Ariana Grande concerts is equal to the known population average of screaming 12 year-olds at Drake concerts. You will reject the null hypothesis if.....

a)your null (comparison) average is in the area of the alternative hypothesis sampling distribution called D (Beta)

b) your null (comparison) average is in the area of the alternative hypothesis sampling distribution called u (alpha)

c)your sample average is in the area of the null hypothesis sampling distribution called beta

d)your sample average is in the area of the null hypothesis sampling distribution called alpha.

The smallest positive integer n so that f(x) = \(x1.log(x7) + x7.log(x4)\) is big-O of xn is 7.

we need to understand what it means for a function to be big-O of another function. In simple terms, it means that the first function grows no faster than the second function, up to a constant factor. Mathematically, we say that f(x) = O(g(x)) if there exist positive constants C and k such that |f(x)| <= C|g(x)| for all x > k. In this case, we want to find the smallest positive integer n such that f(x) = \(O(x^n)\). To do this, we can rewrite f(x) as follows:

f(x) = \(x1.log(x7) + x7.log(x4)\)

= \(log(x7^x1) + log(x4^x7)\)

=\(log(x7^x1 * x4^x7)\)

Now, we can see that the function inside the logarithm is a product of powers of x4 and x7, which means that it grows no faster than \(x^7\). Therefore, we can conclude that f(x) = O\((x^7)\). To show that this is the smallest possible value of n, we would need to demonstrate that f(x) is not O\((x^6)\), but that is beyond the scope of this answer.

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Answer:

ill look for you

Step-by-step explanation:

Answer:

Step-by-step explanation:

y-0.12y = 0.88y

Answer:

12

Step-by-step explanation:

\(a^{2}\) + \(b^{2}\) = \(c^{2}\)

in this case its

\(5^{2}\) + \(b^{2}\) = \(13^{2}\)

25 + \(b^{2}\) = 169 subtract 25 from both sides

\(b^{2}\) = 144 take square root of each side

b = 12

Answer:

\(12\)

Step-by-step explanation:

----------------------------------------

In order to find the missing side of the triangle, we would need to use the Pythagorean theorem: \(a^2+b^2=c^2\)

So,

\(5^2+b^2=13^2\)

\(25+b^2=169\)

\(b^2=144\)

\(b=12\)

--------------------

Hope this helps.

Answer:

linear, 264*2 = 528

Step-by-step explanation:

Answer:

\(5x^2y^5z\)

Step-by-step explanation:

Hello!

Expand the cube root:

Use exponent rule:

The answer is \(5x^2y^5z\).

Answer:

a

Step-by-step explanation:

jefioweodke = f0eoddjeoe  -2fkoforkg f = A

The decimal fraction that represents the given fraction is: 0.36.

To convert the figure from the given form to the decimal fraction, you can choose to use the long division format or simply divide it with the common factors. Between, 9 and 25, there is no common factor, so the best method to use here will be long division. Thus, we can proceed as follows:

1. 25 divided by 9

This cannot go so, we put a zero and a decimal point as follows: 0.

Then we add 0 to 90

2. Now, 25 divided by 90 gives 3 remainders 15. We add 3 to the decimal: 0.3

3. 90 minus 75 is 15. we add a 0 to this and divide 150 by 25 to get 6. This is added to the decimal to give a final result of 0.36.

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The correct answer is (c) Only the distribution of pretest scores must be approximately Normal

How is conditions for 99% CI calculation?

In order to construct a 99% confidence interval for the true mean difference in pretest and posttest scores, we need to meet certain conditions. The only condition that must be met is that the distribution of pretest scores should be approximately Normal. This means that the data collected from the pretest should follow a bell-shaped curve, with the majority of the scores being clustered around the mean. This condition is important because it helps us to make accurate statistical inferences about the population mean difference based on the sample data. The distribution of posttest scores or the difference between posttest and pretest scores are not required to be normal for constructing a confidence interval.

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To construct a 99% confidence interval for the true mean difference in pretest and posttest scores, the condition that must be met is only the distribution of differences (post-pre) must be approximately Normal. Thus, the correct option is D.

When constructing a confidence interval for the true mean difference in pretest and posttest scores, it is only necessary for the distribution of the differences to be approximately Normal. The distributions of the pretest and posttest scores themselves do not need to be Normal, as long as the difference between them is approximately Normal.

However, if all three distributions (pretest, posttest, and the difference) are approximately Normal, this can improve the accuracy and precision of the confidence interval.

Therefore, D is the correct option.

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Rule:

If A+B = 90, then tan(A) = 1/( tan(B) ) and tan(B) = 1/( tan(A) )

-------

Since C = 90, this must mean the other two angles A and B are acute and complementary. So A+B = 90 must be the case. This allows us to use that rule above.

So,

tan(B) = 1/( tan(A) )

tan(B) = 1/( 0.25 )

tan(B) = 4

-------

Here's another way to think about it.

If tan(A) = 0.25, then we could have BC = 1 and AC = 4 as the opposite and adjacent sides respectively. That leads to tan(A) = opposite/adjacent = BC/AC = 1/4 = 0.25

When computing tan(B), the BC and AC sides swap roles in terms of opposite and adjacent,

tan(B) = opposite/adjacent = AC/BC = 4/1 = 4.

For any of these cases, we don't involve the hypotenuse AB.

The shorter length of the leg of the right triangle is 10 units.

Given that a right triangle has legs (x+1) and (2x-2) has an area of 80, we need to find the length of the shorter leg,

Since we know that the area of a right triangle is the product of both legs divided by 2,

So,

[(x+1) × (2x-2)] / 2 = 80

[2x² - 2x + 2x - 2] / 2 = 80

Simplifying the equation,

x² - 1 = 80

x² = 81

x = 9

Now, put the value of x in the given measures of the legs,

x + 1 = 9 + 1 = 10

2(9) - 2 = 16 - 2 = 14

Hence the shorter length of the leg of the right triangle is 10 units.

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Answer:

n = 0

Step-by-step explanation:

1 - 2n + 5 = 6

Add the numbers on the left side.

-2n + 6 = 6

Subtract 6 from both sides.

-2n = 0

Divide both sides by -2.

n = 0

Answer:

n=0

Step-by-step explanation:

1-2n+5=6

6 −2n=6

-2n=6-6

-2n=0

n=0

The new mean  μ + 5, and the new standard deviation  σ, the same as the original standard deviation.

To determine the new mean and standard deviation after adding 5 points to every score in the population,  to understand the effects of adding a constant value to each score.

Mean: When a constant value is added to every score, the mean is also increased by that constant value. Therefore, the new mean would be the original mean plus 5.

Standard Deviation: Adding a constant value to each score does not change the standard deviation. The standard deviation is a measure of dispersion and is not affected by a uniform increase or decrease in scores.

So, if the original mean of the population is denoted by μ and the original standard deviation by σ, then the new mean would be μ + 5, and the new standard deviation  remain unchanged at σ.

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