4 years ago

Find the sum 14 + (-9) + (-20)

Mathematics

1 answer:

wlad13 [49]4 years ago

3 0

It would be -15 I think just calculate it to make sure xx

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An acute, isosceles triangle has a vertex angle measuring 78 degrees. What are the measures of the other two angles?

mixas84 [53]

Answer:

Step-by-step explanation:

180-78=102

102/2=51

6 0

3 years ago

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Simplify y 2 + 11y - 6y + y 2. y4 + 5 y4 + 5y 2y 2 + 5 2y 2 + 5y

Margaret [11]

Answer:

2y^2 +5y

Step-by-step explanation:

y^2 + 11y - 6y + y^2

Combine like terms

2y^2 +5y

4 0

4 years ago

<img src="https://tex.z-dn.net/?f=%28%5Csqrt%7B20%7D%20-%202%5Csqrt%7B45%7D%20%2B%5Csqrt%7B5%7D%20%29%2A%5Csqrt%7B5%7D" id="TexF

nataly862011 [7]

Answer:

Step-by-step explanation:

$(\sqrt{20} - 2\sqrt{45} +\sqrt{5} )*\sqrt{5}$

$= \sqrt{20} \times \sqrt{5} - 2 \sqrt{45} \times \sqrt{5} + \sqrt{5} \times \sqrt{5}$

$= \sqrt{100} - 2 \sqrt{225} + \sqrt{25}$

= 10 - 2 × 15 + 5

= 10 - 30 + 5

= 15 - 30

= -15 (Ans)

7 0

3 years ago

Which inequailities has no solution? I need this to be answer ASAP!

Nadusha1986 [10]

Let's simplify them top to bottom.

6(x + 2) < x - 3
6x + 12 < x - 3
5x + 12 < -3
5x < -15
x < -3
This one checks out.

3 + 4x <= 2(1 + 2x)
4x + 3 <= 4x + 2

This is a problem. In no world is 4x + 3 ever less than or equal to 4x + 2. This one has no solution.

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3 years ago

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almond37 [142]

Step-by-step explanation:

factor sin(x) out of the equation

sin(x) * ( $sin^{2} (x) + cos^{2} (x)$ ) = sin(x)

Use the trigonometric identity $sin^{2} (x) + cos^{2}(x) = 1$

sin(x) * 1 = sin(x)

sin(x) = sin(x)

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3 years ago