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2 years ago

I need help on this :/

Mathematics

2 answers:

Phantasy [73]2 years ago

4 0

3/5 both 12 and 20 can both be divided by 4

alex41 [277]2 years ago

3 0

Answer:

your answer is 3/5 :)

Step-by-step explanation:

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GEOMETRY!! Will give brainliest

svetoff [14.1K]

Answer:

Step-by-step explanation:

(20x15)0.5

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2 years ago

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The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2006). Do male and female consume

AfilCa [17]

Answer:

Yes. The male and female consumers differ in the amounts they spend.

Step-by-step explanation:

We can express the null and alternative hypothesis as:

$H_0: \mu_m=\mu_w\\\\H_1: \mu_m\neq\mu_w$

It is assumed a significance level of 0.05.

The standard deviation of the difference of means is calculated as:

$s=\sqrt{\frac{s_m^2}{n_m} +\frac{s_w^2}{n_w} } =\sqrt{\frac{35^2}{40} +\frac{20^2}{30} } =\sqrt{30.625+13.333} =\sqrt{43.958} =6.63$

The test statistic is

$t=\frac{(M_m-M_w)-0}{s}=\frac{135.67-68.64}{6.63}=10.11$

The degrees of freedom are:

$df=n_1+n_2-2=40+30-2=68$

The P-value for t=10.11 is P=0, so it is smaller than the significance level. The null hypothesis is rejected.

We can conclude that male and female consumers differ in the amounts they spend.

5 0

3 years ago

(#5) A carpenter has two different-sized circular saws. The smaller saw has the radius shown. I couldn't show it, so it is 1.25

grin007 [14]

Answer:

4.71 in. difference

Step-by-step explanation:

so, the radius of the smaller saw is 1.25 and the diameter is double the radius. so it is 2.5 in diameter. the larger saw is 1.5 in greater which is 4 in.

to find circumference, you have to use the solution C = πd or circumference = pi x diameter.

3.14 x 2.5 = 7.85

4 x 3.14 = 12.56

subtract 7.85 from 12.56 to get your answer! i hope this helps!

5 0

2 years ago

Rewrite the following expression using the distributive property: 12x + 20

Dmitry_Shevchenko [17]

Answer: 4(3x +5) or 2(6x +20)

Step-by-step explanation:

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2 years ago

Find the value of P(t)/A<br> for this problem.<br> P(t)/A=

SCORPION-xisa [38]

Answer:

0.8

Step-by-step explanation:

i just did it

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2 years ago

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