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crimeas [40]
2 years ago
15

What is x in the equation 2x+5=31

Mathematics
2 answers:
GREYUIT [131]2 years ago
6 0

Answer:

2x+5=31

2x=31-5

2x/2=26/2

x=13

zmey [24]2 years ago
6 0

Answer:

X = 13

Step-by-step explanation:

2x+5=31 \\ 2x = 31 - 5 \\ x =  \frac{31 - 5}{2}  \\ x =  \frac{26}{2}  \\ x = 13

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3 years ago
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GarryVolchara [31]

Surface Area is the area of each face added together. For this question lets find the area of one triangle first.

Area of a triangle is base*hight/2, so 6*7/2=21. That was the area of one triangle. We have 4 traingle so we multiply that by for. 21*4=84.

Now, lets find the area of the squre. area of square is side*side or side^2.

So we multiply 6*6=36. that is the area of the square.

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A newsletter publisher believes that over 30% of their readers own a Rolls Royce. For marketing purposes, a potential advertiser
Drupady [299]

The conclusion regarding the publisher's claim regarding the hypothesis is that have sufficient evidence to support the claim that the proportion is less than 30% of their readers own a Rolls Royce.

<h3>What is a null hypothesis?</h3>

The null hypothesis is a statistical theory that suggests that no statistical relationship and significance exists in a set of given single observed variable, between two sets of observed data and measured phenomena.

Since we reject the null hypothesis , we have sufficient evidence to support the claim. In this case, we have sufficient evidence to support the claim that the proportion is less than 30% of their readers own a Rolls Royce.

Learn more about hypothesis on:

brainly.com/question/15980493

#SPJ1

Complete question:

A newsletter publisher believes that less than 30% of their readers own a Rolls Royce. For marketing purposes, a potential advertiser wants to confirm this claim. After performing a test at the 0.02 level of significance, the advertiser decides to reject the null hypothesis. What is the conclusion regarding the publisher's claim?

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