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3 years ago

-37=5w-7 w= Please I need an answer ASP

Mathematics

2 answers:

ohaa [14]3 years ago

6 0

Answer:

w=-6

Step-by-step explanation:

-37=5w-7

-37+7=5w-7+7 (add 7 both sides)

-30/5=5w/5 (divide both sides by 5 to remove 5 and make it equal to w)

-6=w or w=-6

To verify the answer:

5(-6)-7

-30-7

-37

grin007 [14]3 years ago

5 0

Answer:

-6

Step-by-step explanation:

-37+7=5w

-30=5w

w=-30÷5

w=-6

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Be sure to answer all parts. List the evaluation points corresponding to the midpoint of each subinterval to three decimal place

gayaneshka [121]

Answer:

The Riemann Sum for $\int\limits^5_4 {x^2+4} \, dx$ with n = 4 using midpoints is about 24.328125.

Step-by-step explanation:

We want to find the Riemann Sum for $\int\limits^5_4 {x^2+4} \, dx$ with n = 4 using midpoints.

The Midpoint Sum uses the midpoints of a sub-interval:

$\int_{a}^{b}f(x)dx\approx\Delta{x}\left(f\left(\frac{x_0+x_1}{2}\right)+f\left(\frac{x_1+x_2}{2}\right)+f\left(\frac{x_2+x_3}{2}\right)+...+f\left(\frac{x_{n-2}+x_{n-1}}{2}\right)+f\left(\frac{x_{n-1}+x_{n}}{2}\right)\right)$

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

We know that a = 4, b = 5, n = 4.

Therefore, $\Delta{x}=\frac{5-4}{4}=\frac{1}{4}$

Divide the interval [4, 5] into n = 4 sub-intervals of length $\Delta{x}=\frac{1}{4}$

$\left[4, \frac{17}{4}\right], \left[\frac{17}{4}, \frac{9}{2}\right], \left[\frac{9}{2}, \frac{19}{4}\right], \left[\frac{19}{4}, 5\right]$

Now, we just evaluate the function at the midpoints:

$f\left(\frac{x_{0}+x_{1}}{2}\right)=f\left(\frac{\left(4\right)+\left(\frac{17}{4}\right)}{2}\right)=f\left(\frac{33}{8}\right)=\frac{1345}{64}=21.015625$

$f\left(\frac{x_{1}+x_{2}}{2}\right)=f\left(\frac{\left(\frac{17}{4}\right)+\left(\frac{9}{2}\right)}{2}\right)=f\left(\frac{35}{8}\right)=\frac{1481}{64}=23.140625$

$f\left(\frac{x_{2}+x_{3}}{2}\right)=f\left(\frac{\left(\frac{9}{2}\right)+\left(\frac{19}{4}\right)}{2}\right)=f\left(\frac{37}{8}\right)=\frac{1625}{64}=25.390625$

$f\left(\frac{x_{3}+x_{4}}{2}\right)=f\left(\frac{\left(\frac{19}{4}\right)+\left(5\right)}{2}\right)=f\left(\frac{39}{8}\right)=\frac{1777}{64}=27.765625$

Finally, use the Midpoint Sum formula

$\frac{1}{4}(21.015625+23.140625+25.390625+27.765625)=24.328125$

This is the sketch of the function and the approximating rectangles.

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4 years ago

Which graph represents an exponential growth function?

tino4ka555 [31]

Answer:

Graph 1 or A

Step-by-step explanation:

The graph is gradually getting bigger as it starts at the left (0,-10) and gets bigger and bigger until it hits the end of the chart, increasing endlessly. That is exponential growth.

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3 years ago

Evaluate: 3 + 2*6 + 6^{3}

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Answer:

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Step-by-step explanation:

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4 years ago

PLEASE SOLVE ITS QUICK Solve | X +6| = 16

gayaneshka [121]

I haven’t done math in a year but to solve for X I think the answer will be X=10

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3 years ago

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there is enough grass to feed 6 cows for 3 days. how long would the same amount of grass feed 9 cows?

brilliants [131]

Answer:

4 1/2 days

Step-by-step explanation:

cows | 6 | 9

days | 3 |  x

6 divided by 2 is 3

9 divided by 2 is 4.5

x = 4 1/2 days

4 0

3 years ago