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1 year ago

Simplify the expression 4\ +\ x^2+3x+2x^2+44 + x 2 +3x+2x 2 +4

Mathematics

1 answer:

Zielflug [23.3K]1 year ago

8 0

Answer:

6x2+6x+52

Step-by-step explanation:

hope its right

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Which angle in triangle ABC has the smallest measure?

ludmilkaskok [199]

Answer:

Angle B

Step-by-step explanation:

To find the smallest angle it is the opposite of the smallest side in the triangle in this case as all sides are given.

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3 years ago

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.

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3 years ago

what would be the equation of a line that passes through (3,-4) with slope 2/3

Len [333]

Answer:

y = 2/3x - 6

Step-by-step explanation:

Use the slope intercept equation, y = mx + b

Plug in the slope and given point, then solve for b

y = mx + b

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-4 = 2 + b

-6 = b

Plug in the slope and b into the equation

y = 2/3x - 6

So, the equation of the line is y = 2/3x - 6

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2 years ago

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RideAnS [48]

I believe the Answer is a/22 ( that’s a fraction )

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2 years ago

A plane averaged 500 mph on a trip going east but only 350 mph on the return trip. The total flying time for both directions was

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Answer:I wish I knew

Step-by-step explanation:

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3 years ago