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Gekata [30.6K]
3 years ago
11

• Write an expression that is equivalent to 3(7 + x). 3(7 + x) + ? 2

Mathematics
2 answers:
stira [4]3 years ago
4 0

Answer:

21+3x

Step-by-step explanation:

maksim [4K]3 years ago
3 0

Answer:

21+3x

Step-by-step explanation:

Expand this:

3(7+x)

So it becomes:

21+3x

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Answer:

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2 years ago
Breyers is a major producer of ice cream and would like to test the hypothesis that the average American consumes more than 17 o
zhenek [66]

Answer:

The p-value would be 0.0939

Step-by-step explanation:

We can set a standard t-test for the Null Hypothesis that H_0: 18.2\geq 17

The test statistic then takes the form

t=\frac{18.2-17}{3.9/\sqrt{15}}=1.317

with this value we then can calculate the probability that is left to the right of this value P(X>1.317). From theory we know that t follows a standard normal distribution. Then P(X>1.317)=0.0939 which is smaller than the p-value set by Breyers of 0.10

3 0
3 years ago
The length of a rectangle is twice the width. The perimeter is 126 centimeters.
krok68 [10]

Answer:

a

Step-by-step explanation:

3 0
3 years ago
Help Please..
8_murik_8 [283]
4a^2-6a+8
3 0
3 years ago
Please help. Write as a single logarithm, a) log(13)+log(4) b) log(small 5)(14)-log(small 5)(2)
dsp73

Answer:

a) \log 52

b) \log_57

Step-by-step explanation:

Use logarithm properties:

\log_ab+\log_ac=\log_a(b\cdot c)\\ \\\log_ab-\log_ac=\log_a\dfrac{b}{c}

Then

a) \log 13+\log 4=\log 13\cdot 4=\log 52

b) \log_514-\log _52=\log _5\dfrac{14}{2}=\log _57

7 0
3 years ago
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