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3 years ago

GET NAMED BRAINLEST PLUS A THANKS AND 40 POINTS. i just need help with this arc circle problem.

Mathematics

1 answer:

AURORKA [14]3 years ago

7 0

Answer:

I'm pretty sure the answer is 40

Step-by-step explanation:

I added the 16 on both sides to the 48 and then divided it by 2. Hope this helps. I'm learning the same thing and the struggle is real but i like this site and we will get better. :)

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How many solutions are there to 3x-10(x+2) =13-7x

Vaselesa [24]

This is the following way to solve this problem:

3x-10(x+2)=13-7x

3x-10x-20=13-7x (multiply 10 times what's in the parentheses)

-7x-20=13-7x ( subtract 3x from -10x)

-7x-20-13=-7x ( since the 13 is positive, when we move it to the other

side, we change it's sign, so now we subtract 13 from 20

-7x-7=-7x

-7=-7x+7x ( we do the same thing we did above, now with the -7x)

-7=x

x=-7

Answer: x = -7

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: )

8 0

3 years ago

Find the perimeter of a ruler that measures 6 inches by 5/6

alukav5142 [94]

Answer:

41/3

Step-by-step explanation:

6 + 6 + 5/6 + 5/6

3 0

3 years ago

Is AP Calculus more difficult than AP Statistics?

Natali5045456 [20]

Answer:

no both are "=" hard

Step-by-step explanation:

3 0

3 years ago

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Solve the problem below by finding a common denominator 1/3 - 1/5

sweet [91]

Answer:

2/15

Step-by-step explanation:

1/3-1/5

5/15-3/15

= 2/15

3 0

3 years ago

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What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

4 0

3 years ago