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Ray Of Light [21]
3 years ago
12

Solve for x: 5x/7 - 5 = 50

Mathematics
1 answer:
katrin [286]3 years ago
7 0
The answer is x =77  hope i help you
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Over the past several years, the proportion of one-person households has been increasing. The Census Bureau would like to test t
Ganezh [65]

Answer: z =2.39

Step-by-step explanation:

Given :

H_0: p \leq0.23\\\\ H_a: p > 0.23

A random sample of 136 households found that 43 consisted of one person.

i.e. Sample size : n= 136

Sample proportion : \hat{p}=\dfrac{43}{136}=0.316176470588\approx0.3162

Test statistic for proportion :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

\Rightarrow z=\dfrac{0.3162-0.23}{\sqrt{\dfrac{0.23(1-0.23)}{136}}}\\\\\Rightarrow\ z=\dfrac{0.0862}{\sqrt{0.00130220588235}}\\\\\Rightarrow\ z=\dfrac{0.0862}{0.0360860898734}\\\\=2.38873206552\approx2.39

Hence, the value of the test statistic: z =2.39

5 0
3 years ago
Which values are areas of cross sections that are parallel to a face of this right rectangular prism?
mafiozo [28]

Answer:

A = 24

Step-by-step explanation:

We can see that the face of the given rectangular prism shows the width 4 and the height of 6. If we cut the figure at any point along the length 20, such that the cross section is parallel to the face, the cross section, which occurs at x length, will always have the same dimensions, that are 4 and 6.

So the area of the cross section which is parallel to the face of the given rectangular prism is given by:

A = 6 × 4

A = 24

8 0
3 years ago
What is the product of the two binomials below (3A+4B)(3A-4B)
Mariulka [41]

Answer:

9A^2 - 16B^2.

Step-by-step explanation:

(3A+4B)(3A-4B) = 9A^2 + 12AB - 12AB - 16B^2 = 9A^2 - 16B^2.

Hope this helps!

5 0
3 years ago
PLZ HELP ASAP<br><br>!!!!!!​
notsponge [240]

Answer:

m<A = 133

Step-by-step explanation:

Opposite angles of an inscribed quadrilateral are supplementary.

That means that m<A + m<C = 180.

m<A + m<C = 180

4x + 5 + x + 15 = 180

5x + 20 = 180

5x = 160

x = 32

m<A = 4x + 5

m<A = 4(32) + 5

m<A = 128 + 5

m<A = 133

7 0
3 years ago
PLEASE HUREY IXL QUESTION
adelina 88 [10]

Answer:

5 12/24 -> -0.5 -> -5 6/20

Step-by-step explanation:

Negatives are lasts and positive goes first! Since the order is greatest to least.

-5 6/20 is less than -0.5 because *think of a number line -5 6/20 will be all the way to the left because it large in negative value

4 0
4 years ago
Read 2 more answers
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