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3 years ago

Solve for x -4(5 - x) = (x + 7)

Mathematics

1 answer:

garik1379 [7]3 years ago

4 0

Answer:

x=9

Step-by-step explanation:

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The distance between City A and City B is 270 miles. On a certain map, this distance is scaled down to 4.5 inches. If the distan

777dan777 [17]

Find the scale for how many miles per inch are on the map:

270 miles / 4.5 inches = 60 miles per inch.

On the map every 1 inch equals 60 miles.

12 inches x 60 miles per inch = 720 miles total.

City B and City C are 720 miles apart

6 0

3 years ago

A wheel with radius 1 foot makes 1 revolution in 4 seconds. What is the linear velocity, in feet per second, of a point on the e

Alex

Answer:

$v=\dfrac{\pi}{2}\ ft/s$

Step-by-step explanation:

Given that,

A wheel with radius 1 foot makes 1 revolution in 4 seconds

We need to find the linera velocity of a point on the edge of the wheel. We know that, the linear velcity is given by :

$v=r\omega$

Where

$\omega$ is angular velcocity, $\omega=2\pi\ rad$

$\omega=\dfrac{1}{4}\times 2\pi\\\\=0.5\pi\ rad/s$

$v=1\times 0.5\pi\\\\v=\dfrac{\pi}{2}\ ft/s$

So, the linear velocity of the wheel is equal to $\dfrac{\pi}{2}\ ft/s$ .

3 0

3 years ago

Read 2 more answers

Question 11 of 25

Olegator [25]

$\\ \sf\longmapsto x+4=\sqrt{8-x}$

$\\ \sf\longmapsto (x+4)^2=8-x$

$\\ \sf\longmapsto x^2+16+8x=8-x$

$\\ \sf\longmapsto x^2+8x-x+16-8=0$

$\\ \sf\longmapsto x^2+7x+8=0$

$\\ \sf\longmapsto x^2-8x+x+8$

$\\ \sf\longmapsto (x-8)(x-1)=0$

$\\ \sf\longmapsto x=8,-1$

Option C

4 0

3 years ago

Read 2 more answers

What is the multiplicative inverse of y?

Yanka [14]

Answer:

The multiplicative inverse of y is $\frac{1}{y}$ .

Step-by-step explanation:

Multiplicative inverse implies a value that you would multiply with the given value so as to give 1.

Let the multiplicative inverse of y be represented by a, so that;

a x y = 1

ay = 1

divide both sides by y to have,

a = $\frac{1}{y}$

Thus, the multiplicative inverse of y is $\frac{1}{y}$ .

This is applicable to any given value. Examples:

i. Given 2, the multiplicative inverse is $\frac{1}{2}$ .

⇒ 2 x $\frac{1}{2}$ = 1

ii. What is the multiplicative inverse of 5?

The required answer is $\frac{1}{5}$ .

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3 years ago

Julia, a 2-year-old girl, looks at her mother for cues when she is offered a toy by a neighbor, in order to decide whether to ta

Kipish [7]

Answer: She has developed social referencing.

Step-by-step explanation: Social referencing is a strategy used by children to help them making decisions by looking at facial expressions of people and analyzing the emotions shown. If there's approval, they usually do the action they were planning, and if there's disapproval, they might choose not to do it.

3 0

3 years ago