3 years ago

How many solutions does the equation 4y − 4y − 12 = 14 − 2 have?

Mathematics

1 answer:

kolezko [41]3 years ago

7 0

The Equation has I think about 3 answers

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The area of a circle, in terms of π, is 80π m2. Find the value of the radius. Give your answer as a simplified surd.

jolli1 [7]

Answer:

$r=4\sqrt{5}\:\: \sf m$

Step-by-step explanation:

$\textsf{Area of a circle}=\pi r^2 \quad \textsf{(where r is the radius)}$

Given:

Area = 80π m²

Substitute the given value into the formula and solve for r:

$\implies 80 \pi = \pi r^2$

$\implies \dfrac{80 \pi}{\pi} = \dfrac{\pi r^2}{\pi}$

$\implies 80=r^2$

$\implies \sqrt{r^2}=\sqrt{80}$

$\implies r=\sqrt{80}$

$\implies r=\sqrt{16 \cdot 5}$

$\implies r=\sqrt{16}\sqrt{5}$

$\implies r=\sqrt{4^2}\sqrt{5}$

$\implies r=4\sqrt{5}$

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2 years ago

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Question 5 (1 point) What is the mean of this set of data: 78, 79, 80, 80, 89, 89, 92, 93, 94, 95, 95, 95 Round your answer to t

Len [333]

88.3

add all the numbers, you get 1,059 and divide that by how many numbers there are which is 12 and you get 88.3

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3 years ago

The sum of two consecutive odd integers if the smaller number is n. Write an algebraic equation.

nika2105 [10]

If the smaller number is n, then the next odd integer can be expressed as n+2. The sum of these is
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or
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4 years ago

PART 3 OF ME ASKING FOR HELP

e-lub [12.9K]

Answer:

Step-by-step explanation:

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3 years ago

Solve the equation v + f – e = 2 for e.

3241004551 [841]

V+F-E=2
F-E=2-V
-E=2-V-F
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3 years ago