Simplify. –5.9 + (–8.7) – (–12.3) A. –26.9 B. –9.5 C. –2.3 D. 15.1

1 answer:

3 0

You can cancel the subtraction sign and the negative sign to make -5.9+(-8.7)+12.3 Add the negatives 5.9 and 8.7, and the answer of that is -14.6. Subtract 12.3 from 14.6, and the answer is C.

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Hey can you please help

AfilCa [17]

Answer:

Measure of major arc BDC = 260.5° Option A

Step-by-step explanation:

Given that, measure of central angle ∠BAE = 80.5°

Firstly we will find the measure of arc BE .

The measure of arc BE is same as the measure of its central angle.

So, measure of minor BE arc = 80.5°

measure of arc EDC = 180° because of half circle

So,

measure of major arc BDC = 180° + 80.5° = 260.5° option A

That's the final answer.

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3 years ago

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worty [1.4K]

Answer: A. is correct

Step-by-step explanation:

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4 years ago

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Solve the system by substitution.<br> - 8x + y = -32<br> - 3x – 10 = y<br> (,)

agasfer [191]

Answer:

$x=2,\:y=-16$

Step-by-step explanation:

$\begin{bmatrix}-8x+y=-32\\ -3x-10=y\end{bmatrix}\\\\\mathrm{Isolate}\:x\:\mathrm{for}\:-8x+y=-32:\quad x=-\frac{-32-y}{8}\\\\\mathrm{Subsititute\:}x=-\frac{-32-y}{8}\\\begin{bmatrix}-3\left(-\frac{-32-y}{8}\right)-10=y\end{bmatrix}\\\\Simplify\\\begin{bmatrix}\frac{3\left(-32-y\right)}{8}-10=y\end{bmatrix}\\\\\mathrm{Isolate}\:y\:\mathrm{for}\:\frac{3\left(-32-y\right)}{8}-10=y:\quad y=-16\\\\\mathrm{For\:}x=-\frac{-32-y}{8}\\\\\mathrm{Subsititute\:}y=-16\\x=-\frac{-32-\left(-16\right)}{8}\\$