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kari74 [83]
2 years ago
5

Solve pls i give brainlist to correct answer.

Mathematics
1 answer:
DIA [1.3K]2 years ago
5 0

Answer:

Maggie can run faster by 0.85 minutes.

Maggie runs in 5.20 minutes, Olivia runs in 4.35 minutes.

Step-by-step explanation:

Maggie = can run a mile in 5.2 minutes (1.3/0.25)

Olivia = can run a mile in 4.35 minutes (2.9/0.666666667)

5.2-4.35= 0.85 minutes

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The difference of b and 2 is greater than or equal to –26.
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Answer:

b-2<u>></u>-26

Step-by-step explanation:

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3 years ago
Find the median and mean of the data. Which reflects best measure of the center? 43,38,37,57,57,58,45
Gnom [1K]
Your answer will be 45. Hope this helps!
3 0
3 years ago
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Rearrange y=1/2x+1 to make x the subject of the formula
Zinaida [17]
X/2+1=y  subtract 1 from both sides

x/2=y-1  multiply both sides by 2

x=2y-2
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3 years ago
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Approximate the area under the curve over the specified interval by using the indicated number of subintervals (or rectangles) a
devlian [24]

Answer:

The area under the function \int\limits^3_1 {9-x^2} \, dx \approx 7.25..

Step-by-step explanation:

We want to find the Riemann Sum for \int\limits^3_1 {9-x^2} \, dx with 4 sub-intervals, using right endpoints.

A Riemann Sum is a method for approximating the total area underneath a curve on a graph, otherwise known as an integral.

The Right Riemann Sum is given by:

\int_{a}^{b}f(x)dx\approx\Delta{x}\left(f(x_1)+f(x_2)+f(x_3)+...+f(x_{n-1})+f(x_{n})\right)

where \Delta{x}=\frac{b-a}{n}

From the information given we know that a = 1, b = 3, n = 4.

Therefore, \Delta{x}=\frac{3-1}{4}=\frac{1}{2}

We need to divide the interval [1, 3] into 4 sub-intervals of length \Delta{x}=\frac{1}{2}:

\left[1, \frac{3}{2}\right], \left[\frac{3}{2}, 2\right], \left[2, \frac{5}{2}\right], \left[\frac{5}{2}, 3\right]

Now, we just evaluate the function at the right endpoints:

f\left(x_{1}\right)=f\left(\frac{3}{2}\right)=\frac{27}{4}=6.75

f\left(x_{2}\right)=f\left(2\right)=5=5

f\left(x_{3}\right)=f\left(\frac{5}{2}\right)=\frac{11}{4}=2.75

f\left(x_{4}\right)=f(b)=f\left(3\right)=0=0

Next, we use the Right Riemann Sum formula

\int\limits^3_1 {9-x^2} \, dx \approx \frac{1}{2}(6.75+5+2.75+0)=7.25

7 0
4 years ago
Need help ASAP DUE TODAY!!!!
vitfil [10]

Answer:

the slope is 1/4

Step-by-step explanation:

bc of rise/run

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