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Yuki888 [10]
3 years ago
7

Find the answer of: [-5+(-2)] x (-4)

Mathematics
2 answers:
poizon [28]3 years ago
6 0
It’s 28
I’m pretty sure i took a test on this and got it right
adell [148]3 years ago
4 0

Answer:

28

Step-by-step explanation:

[-5+(-2)] x (-4)

Follow\:the\:PEMDAS\:order\:of\:operations\\\mathrm{Calculate\:within\:parentheses}\:\left[-5+\left(-2\right)\right]\::\quad -7\\=-7\left(-4\right)\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:-7\left(-4\right)\::\quad 28\\=28

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3 years ago
I need help with these two trigonometry problems.
Sloan [31]

Answer:

B \approx 32.1\°; A \approx 39.0\°

Step-by-step explanation:

Sine theorem: in any triangle, the ratio between a side and the sine of the opposite angle is constant

\frac{sin\ \alpha}a = \frac{sin\ \beta}b =\frac{sin\ \gamma}c

In our case, for the left triangle,

\frac {sin\ 103\°}{11} =\frac{sin\ B} 6 \rightarrow sin\ B = \frac6{11} sin\ 103\°

Time to grab a calculator and crunch numbers. Double check your calculator is in degrees and not in radians (plug in sin 30°, if you're getting 0.5 you're good) and you will get

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Same difference with the right triangle. With the same calculations

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5 0
2 years ago
(40 points to best answer) (help ASAP)
aleksandrvk [35]

Answer:

x=3.5

Step-by-step explanation:

We can use proportions to solve this problem.  Put the side of one triangle over the same side of the other triangle.

6           4.2

------ = ----------

5           x

Using cross products

6x = 5*4.2

6x =21

Divide by 6

6x/6 = 21/6

x=3.5

5 0
3 years ago
Simplify the following expression.<br><br> (38x+61y) - (3x- 11y)
zmey [24]

Answer:

35x+72y

Step-by-step explanation:

(38x+61y)-(3x-11y)\\38x+61y-3x+11y\\35x+72y\\

Brainliest if it helped you!

4 0
3 years ago
Read 2 more answers
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