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2 years ago

Weekly math review-Q1.6

Mathematics

1 answer:

ad-work [718]2 years ago

7 0

What is the question

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9-5(4-2)<br> --------------<br> 3+5

nirvana33 [79]

Answer:

-1/8

Step-by-step explanation:

9-5(4-2)

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

3+5

First do the parentheses

9-5(2)

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

3+5

Then calculate the top and bottom of the fraction

We need to multiply and divide first

9-10

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

3+5

-1

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

5 0

2 years ago

Five times a number minus eight is the same as ten more than three times a number. Find the number.

serious [3.7K]

Answer:

Step-by-step explanation:

5(n-8)=3n+10

5n-40=3n+10

5n=3n+50

2n=50

n=25

5 0

2 years ago

The region bounded by y = e−x2, y = 0, x = 0, and x = b (b > 0) is revolved about the y-axis. (Round your answers to three de

kari74 [83]

Answer:

0.982 * $\pi$ = 3.085 cubic units

Step-by-step explanation:

To find the volume of the solid generated by a region that is bounded by lines where x = 0 , x (b) = 2 we apply the formula given in the attachment below

the required region boundaries are

y = e^-x2 , y = 0 , x = 0, x = b ( b >0)

attached below is a detailed solution of the problem

6 0

2 years ago

Write an equation for the line (4,7) and ( 1,1)2. Write an equation for the graph

Nastasia [14]

ANSWER:

$y=2x-1$

STEP-BY-STEP EXPLANATION:

We have that the equation in its slope-intercept form is the following:

$\begin{gathered} y=mx+b \\ m\text{ is the slope and b is the y-intercept } \end{gathered}$

The slope can be calculated as follows:

$m=\frac{y_2-y_1}{x_2-x_1}$

We use the points (4,7) and (1,1) to calculate the slope:

$m=\frac{1-7}{1-4}=\frac{-6}{-3}=2$

Now, we calculate the value of b, using the point (1,1) and the slope, like this:

$\begin{gathered} 1=1\cdot2+b \\ b=-2+1 \\ b=-1 \end{gathered}$

Therefore, the equation would be:

$y=2x-1$

5 0

5 months ago

Write a linear function f with the values f(-3) = 1 and f(5) = 2 <br> can someone help me please?

jekas [21]

X-8y+5=0
Step by step explanation

3 0

1 year ago