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LUCKY_DIMON [66]
3 years ago
7

Solve the following equation, answer as a reduced, mixed number. Then place the correct number in the box provided.

Mathematics
2 answers:
qaws [65]3 years ago
4 0
7(x-2) + 3(x + 2) = 5(x-6)...distribute thru the parenthesis
7x - 14 + 3x + 6 = 5x - 30...combine like terms
10x - 8 = 5x - 30...subtract 5x from both sides
10x - 5x - 8 = -30....add 8 to both sides
10x - 5x = -30 + 8...combine like terms
5x = - 22
x = -22/5 = - 4 2/5 <==
liq [111]3 years ago
4 0

the correct answer is x = - 4 2/5

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Nastasia [14]
1. the answer is (3)
3 0
3 years ago
An Olympic sized swimming pool holds 6.6043×10^5 gallons of water. A standard garden hose can deliver 9 gallons of water per min
bixtya [17]

6.6043×10^5 = 660,430 gallons.

660,430 / 9 = 73381.11... minutes.

73381.11... / 60 = 1223.01851852  hours.

1223.01851852 / 24 = 50.9591049383  days.

It would take about 51 days for the garden hose to fill the pool.

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3 years ago
Please help! What is the product of 2/3 x 5/6 x 14. please show how answer was achieved.
Wittaler [7]
70/9 this is the answer.
6 0
3 years ago
Read 2 more answers
Assume that 200 babies are born to 200 couples treated with the XSORT method of gender selection that is claimed to make girls m
JulsSmile [24]

Answer:

a) test statistic = 2.12

b) p-value = 0.017

c) we reject the Null hypothesis

Step-by-step explanation:

Given data :

N = 200

girls (x) = 115 , Boys = 85

p = x / n = 115 / 200 = 0.575

significance level ( ∝ ) = 0.1

<em>aim : test whether the proportion of girls births after the treatment is greater than 50% that occurs without any treatment </em>.

<u>A) Determine the test statistic </u>

H0 : p = 0.5

Ha : p > 0.5

to determine the test statistic we will apply the z distribution at ( ∝ ) = 0.1

Z - test statistic = ( 0.575 - 0.5)  / \sqrt{0.5*0.5 / 200}  = 2.12

<u>b) determine the p-value</u>

The P-value can be determined using the normal standard table

P-value = 1 - p(Z< 2.12 )  =  1 - 0.9830 = 0.017

c) Given that the p value ( 0.017 ) < significance level ( 0.1 )

we will reject the H0 because there is evidence showing that proportion of girls birth is > 50%

3 0
3 years ago
Pls tell me the answer with the work shown
shepuryov [24]

Answer:

plug in the numbers for radius, and know your formulas. a diameter is 2 times a radius so

Pi or 3.14 times D is the same as 2 times pi times radius.

4 0
3 years ago
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