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Rasek [7]
3 years ago
6

Can someone explain these please?

Mathematics
1 answer:
Dominik [7]3 years ago
8 0
5.
-4=r/20-5

First add 5 to both sides
1=r/20

Then multiply both sides by 20
20=r

Final answer: r=20

7.
(v+9)/3=8

First multiply both sides by 3
v+9= 24

Subtract 9 from both sides
v=15

Final answer: v=15
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Please help its for algebra!
RSB [31]

Answer:

x - 2y = 32

Step-by-step explanation:

Start with y + 7 = (1/2)(x - 18).

Clear out the fractions by mult. both sides by 2:

2y + 14 = x - 18

Subtract 2y + 14 from both sides, obtaining:

0 = x - 2y - 14 - 18, or

0 = x - 2y - 32

Then x - 2y = 32.  This is in standard form.

5 0
3 years ago
(PLEASE HELP AS SOON AS POSSIBLE)
Mkey [24]

Answer:

G

Step-by-step explanation:

The origin in a graph is the point (0, 0) where x and y are both 0. If you move 4 units left, x is -4. And if you go down 2 units, y is -2. So the ordered pair would be (-4, -2)

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3 years ago
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Solve for x. Round to the nearest tenth, if necessary.
Yakvenalex [24]
X=3.8

Sin41/2.5 = sin90/x
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8 0
3 years ago
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You have two spinners
dem82 [27]

Answer:

There is a \frac{1}{12} chance of the spinner landing on red, then three.

Step-by-step explanation:

So the first one has a \frac{1}{4} chance, since there are four possibilities.

The second one has a \frac{1}{3} chance, since there are three possibilities.

So, we just need to combine them.

\frac{1}{4} *\frac{1}{3} =\frac{1}{12}

Have a nice day. Please mark brainliest!

3 0
3 years ago
Explain with example of why 2^(-8) * 2^(-7) is equal to 2^(-15)
tatyana61 [14]
(-8)*(-7)=(-15)

the 2 in the beginning stays the same, and you multiply what’s in the parentheses to get (-15)
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