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sammy [17]
3 years ago
10

A certain number is multiplied by 4 and then 7 is added to the result then final answer is 39 find the number

Mathematics
1 answer:
Len [333]3 years ago
7 0

4x + 7 = 39

    -7     -7

4x = 32

/4      /4


x = 8

The answer is 8.

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The length of a rectangular prism is 4√3 units. The height is 3√6 units. If the volume is irrational, which could be the measure
Jet001 [13]
Volume = length * height * width
             =   4 qrt3 + 3 sqrt6 * w
              = 12 sqrt18 w

let w = 2 sqrt50 then volume =  2*12 *  sqrt 18*50  = 24*30  so this is rational

let w =  4 sqt 12 the v = 48  sqrt12 * sqrt 18 = 48 sqrt30  which is irrational

C and D are rational  
answer is B
8 0
3 years ago
Which of the following is not true when using the confidence interval method for testing a claim about μ when σ is​ unknown? Cho
sp2606 [1]

Answer:

The​ P-value method and the classical method are not equivalent to the confidence interval method in that they may yield different results ( A )

Step-by-step explanation:

The False statement about using the confidence interval method when testing a claim about  μ when  σ is​ unknown is ; The​ P-value method and the classical method are not equivalent to the confidence interval method in that they may yield different results

This is because sometimes the values gotten from the p-value and confidence interval differs and this occurs mostly when the sample size is very small.

3 0
3 years ago
Geometry 1.4 - Segment Addition Postulate & Midpoint
Roman55 [17]

Answer:

28

Step-by-step explanation:

AB + BC = AC

14 + 3x-4 = 4x+4

Combine like terms

10 +3x = 4x+4

Subtract 3x from each side

10+3x-3x = 4x+4-3x

10 = x+4

Subtract 4 from each side

10-4 =x-4+4

6 =x

We want AC

AC = 4x+4 = 4*6+4 = 24+4 = 28

4 0
2 years ago
Use numerals instead of words. If necessary, use decimals instead of fractions.
Keith_Richards [23]
26 % ------------------------ $45.50
100 % ----------------------- $x
--------------------------------------------
26 : 100 = 45.50 : x
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x = 4,550 : 26
x = $175
Answer:
It made $175 in total sales.
4 0
3 years ago
Please help me with this question and if you don't know it, pls don't answer. thank you!
kramer

Answer:

The triangles are similar because angle N=angle E and angle F=angle H.

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Step-by-step explanation:

6 0
3 years ago
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