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Lubov Fominskaja [6]
3 years ago
10

Solve for x:

Mathematics
2 answers:
solniwko [45]3 years ago
8 0
-3x/2 - 9 = -27
-3x/2 = -27 + 9
-3x/2 = -18
-3x = -18 * 2
-3x = -36
x = 36/3
x = 12

*negative thirty-six turned into negative thirty-six over three, but since both numbers were negative, we had to make it positive in order to simplify, so that's why the answer is twelve, and not negative twelve.
Dennis_Churaev [7]3 years ago
6 0

Answer:

x=12

Hope this helps :)

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30g of sugar is used to make 4 cakes. How much sugar is used to make 7 cakes
tankabanditka [31]

Answer:

52.5

Step-by-step explanation:

well first you want to find the ratio and to do that just do 30 / 4 which is

7.5 so for every 1 cake you need 7.5 grams of sugar

if you plug in 7 it is just 7 * 7.5

7 * 7.5 = 52.5

so it takes 52.5 grams of sugar to make 7 cakes

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3 years ago
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3 years ago
Can you please help me solve thanks step by step
shusha [124]

Answer:

40 degrees

Step-by-step explanation:

We know the entire angle of ABD is 70 and CBD and ABC are in it.

Since we know one of them (CBD) is 30, we can subtract 30 from 70 to find ABC. This is because the angle of ABC and CBD equal ABD.

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3 years ago
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A car can travel 30 miles on a gallon of gas and had a 20 gallon gas tank. Let g be the number of gallons of gas the car has in
Fudgin [204]

Answer:

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5 0
3 years ago
Seventy-six percent of sunflower seeds will germinate into a flower, and a sample of 800 such sunflower seeds is randomly select
ollegr [7]

Answer:

12.08

Step-by-step explanation:

For each sunflower, there are only two possible outcomes. Either it germinates, or it does not. The probability of a sunflower germinating is independent of other sunflowers. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

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This means that n = 800

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3 years ago
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