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3 years ago

Rewrite the equation

Mathematics

1 answer:

k0ka [10]3 years ago

6 0

Answer:

r=C/2π

Step-by-step explanation:

here we just have to rearrange the given formulae in such a way that it finds out the value of r.

Given formulae is C=2πr

we can carry 2π to the left hand side.

r= $\frac{C}{2π}$ . is the recquired formulae.

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Given f(x)=-x-1, solve for x when f(x)=-10

Ilia_Sergeevich [38]

f(x) = -10

set the equation equal to -10 and solve for x:

-10 = -x-1

Add 1 to both sides:

-9 = -x

Divide both sides by -1:

x = 9

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2 years ago

What is 1.7¯ expressed as a fraction in simplest form?

tatiyna

16/9.................

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2 years ago

Solving special systems<br> {y=1/2x+4<br> {-1/2x+y=-5

ryzh [129]

Answer:

no solution

Step-by-step explanation:

Given the 2 equations

y = $\frac{1}{2}$ x + 4 → (1)

- $\frac{1}{2}$ x + y = - 5 → (2)

Substitute y = $\frac{1}{2}$ x + 4 into (2)

- $\frac{1}{2}$ x + $\frac{1}{2}$ x + 4 = - 5 , that is

4 = - 5 ← not possible

This indicates the system has no solution

7 0

3 years ago

What percent of 863.6 is 380

Aleks04 [339]

Hello there! To solve types of questions like these, we can write and solve a proportion. We are looking for the percentage of 380 out of 863.6. Let's set up the proportion like this: 380/863.6 = x/100. Cross multiply the values in order to get 38,000 = 863.6x. Now, divide each side by 863.6 to isolate the "x". 38,000/863.6 is 44.00185271 or 44 when rounded to the nearest whole number. 380 is appox. 44% of 863.6.

4 0

3 years ago

Pedro's Diner is open six days a week. His income for the first five days this week was

S_A_V [24]

Answer:

$330

Step-by-step explanation:

What is mean/average?

It is the "sum of all the numbers" divided by the "number of numbers".

An average of 200 for 6 numbers means:

$Average=\frac{SUM}{NumberOfNumbers}\\200=\frac{SUM}{6}\\SUM=200*6\\SUM=1200$

THus, if we were to add the 6 numbers, we would get "1200". Let the 6th number be x, so we can write:

120 + 110 + 200 + 300 + 140 + x = 1200

870 + x = 1200

x = 1200 - 870

x = 330

To make the average $200, Pedro needs to make $330 on 6th day.

6 0

3 years ago