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KATRIN_1 [288]
3 years ago
13

PLEASE HELP -7y = -91 What does y equal

Mathematics
1 answer:
rusak2 [61]3 years ago
4 0

Answer: I think i got it because -7y/-7 = -91/-7 equals 13 so y = 13

Step-by-step explanation:

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The law of Cosines Is......​
iogann1982 [59]

Answer: \Large\boxed{C.~21}

Step-by-step explanation:

<u>The goal of the question</u>

Find the value of 2abcosC

<u>Given information</u>

a = 4

b = 3

c = 2

<u>Given formula (Law of Cosine)</u>

c^2=a^2+b^2-2abcosC

<u>Substitute values into the formula (Leave 2abcosC as it is)</u>

(2)^2=(4)^2+(3)^2-2abcosC

<u>Simplify the exponents</u>

4=16+9-2abcosC

<u>Simplify by addition</u>

4=25-2abcosC

<u>Add 2abcosC on both sides</u>

4+2abcosC=25-2abcosC+2abcosC

4+2abcosC=25

<u>Subtract 4 on both sides</u>

4 + 2abcosC-4=25-4

\Large\boxed{2abcosC=21}

Hope this helps!! :)

Please let me know if you have any questions

5 0
1 year ago
Read 2 more answers
in the number 8.88, how is the value of the underlined digit related to the digits on its left and right?
nikklg [1K]
Digits on the right are like units and digits on the left are like tenths
7 0
2 years ago
Write the following in point-slope form using the given information: Slope: 2 points
SCORPION-xisa [38]

Answer:

y+5 = \frac{1}{15}(x - 3)}

Step-by-step explanation:

Given

m = \frac{1}{15} -- Slope

(x_1,y_1) = (3,-5) --- Point

Required

Write an equation in point slope form

The point slope form of an equation is:

y - y_1 = m(x - x_1)

Substitute values for y1, x1 and m

y-(-5) = \frac{1}{15}(x - 3)}

y+5 = \frac{1}{15}(x - 3)}

Hence, the equation in point slope form is:

y+5 = \frac{1}{15}(x - 3)}

8 0
2 years ago
List the following fractions from least to greatest. 1/7, 6/7, 4/7, 3/7. Ignore that I chose an answer, I accidentally clicked i
Mumz [18]

Answer:

Step-by-step explanation:

your answer was right XD its 1/7 3/7 4/7 6/7

7 0
3 years ago
Please help solve for PQ.
DerKrebs [107]
This problem cannot be solved unless we are given figure NPQR is a rhombus.
In that case, then all sides are equal, meaning 
5x+16=9x-32
Solve for x
9x-5x=16+32
4x=48
x=12

Each side (including PQ) then equals 5x+16=5*12+16=76
8 0
2 years ago
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