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3 years ago

Help Please with these

Mathematics

1 answer:

77julia77 [94]3 years ago

3 0

Problem 17

Focus on one of the triangles. It has legs of 8 and 15. Use the pythagorean theorem to find the hypotenuse is 17.

Basically you're solving for c in a^2+b^2 = c^2. Use a = 8 and b = 15.

The diameter is 17 and the circumference is

C = pi*d = pi*17 = 17pi

<h3>Answer: 17pi</h3>

==============================================

Problem 18

This figure has four faces, so this is a tetrahedron. The "tetra" is greek that translates to "four".

Another possible name for this figure is triangular pyramid because we have a pyramid with a triangular base.

<h3>Answer: Triangular pyramid or tetrahedron</h3>

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Add and SImplify<br> (x+2)/(x) + (x-3)/(x+2)

Jlenok [28]

(x+2)/(x) + (x-3)/(x+2)

Common denominator x(x+2)

Reduce both to common denominator:
x+2)/[x(x+2)] + (x-3)/[x(x+2)] ===> [(x+2)² + (x-3)] / [x(x+2)]
= [x²+4x+4+x-3] / [x(x+2)]
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4 years ago

QUESTION 10

galben [10]

The endpoint T is located at C. (3, 7)

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2 years ago

Mother gives birth to a 8 pound baby. Every 4 months, the baby gains 3 pounds.

Slav-nsk [51]

Hello!

The equation, y = mx + b is slope-intercept form. In this equation, m is the slope, and b is the y-intercept.

If the baby was exactly 8 pounds when it was born, then the y-intercept is (0, 8) because at zero months, the baby was eight pounds. To find the rate of change, we can use the the y-intercept (0, 8), and the weight of the baby at four months, which is (4, 8 + 3) → (4, 11).

Since we have two points, we can use the slope formula $(\frac{y_{2}-y_{1}}{x_{2}-x_{1}})$ to find the rate of change.

$\frac{8 -11}{0-4} = \frac{-3}{-4} = \frac{3}{4}$ .

The rate of change is 3/4.

Therefore, the equation that describes the baby's weight is y = 3/4x + 8.

8 0

3 years ago

Jessica 3.678 dollars how can Jessica Lowndes it to the nearest tenth to buy yourself a chocolate bar and how much money will it

alina1380 [7]

You would round the seven to an eight because the 8 next to is is closer to 10 and gives it more value than 5. when you're done it would be rounded to 3.68 because you want to find a number rounded to the nearest tenth so you'd use the extra number (8) to make the final product larger than smaller. it would stay a seven if it was lower than 5.

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3 years ago

Read 2 more answers

Use any method of your choice to solve this system. <br><br>2x−y=11 <br><br>6x−3y=15

algol [13]

2x −6x− y+ 3y+15-11 =-4x-2y-4=xy=4+2+4=10

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3 years ago

Help Please with these​

Help Please with these