2 years ago

Quesuon 18 of 40

Mathematics

1 answer:

dimulka [17.4K]2 years ago

7 0

Answer:

answer is a cylinder I hope it will help you please follow

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Please help it’s a quiz and can you show me an example how to do this ? And the answer please?

Harman [31]

Answer:

6 i think

Step-by-step explanation:

6 0

2 years ago

13-12x+7x <br> Ive been trying to find the answer but i cant seem to do it right

frutty [35]

Your answer is 8x hope that helps

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2 years ago

What is the solution to sqrt 17-x=x+3? Show your work.

snow_lady [41]

Answer:

$x=1$

Step-by-step explanation:

Remember:

$(\sqrt[n]{a})^n=a\\\\(a+b)=a^2+2ab+b^2$

Given the equation $\sqrt{17-x}=x+3$ , you need to solve for the variable "x" to find its value.

You need to square both sides of the equation:

$(\sqrt{17-x})^2=(x+3)^2$

$17-x=(x+3)^2$

Simplifying, you get:

$17-x=x^2+2(x)(3)+3^2\\\\17-x=x^2+6x+9\\\\x^2+6x+9+x-17=0\\\\x^2+7x-8=0$

Factor the quadratic equation. Find two numbers whose sum be 7 and whose product be -8. These are: -1 and 8:

$(x-1)(x+8)=0$

Then:

$x_1=1\\x_2=-8$

Let's check if the first solution is correct:

$\sqrt{17-(1)}=(1)+3$

$4=4$ (It checks)

Let's check if the second solution is correct:

$\sqrt{17-(-8)}=(-8)+3$

$5\neq-5$ (It does not checks)

Therefore, the solution is:

$x=1$

3 0

3 years ago

Two independent simple random samples are taken to test the difference between the means of two populations whose variances are

My name is Ann [436]

I think it’s 72 degrees of freedom

3 0

2 years ago

What are the factors of m2 – 12m + 20?

amm1812

M² - 12m + 20

m² ⇒ m * m
20 ⇒ - 10 * -2

(m - 10)(m - 2)
m(m - 2) - 10(m-2)
m² - 2m - 10m + 20
m² - 12m + 20

m - 10 = 0
m = 10

m - 2 = 0
m = 2

5 0

3 years ago

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