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3 years ago

Please help I need answers ASAP

Mathematics

1 answer:

algol [13]3 years ago

3 0

Answer is D (3x^6+7x^3-2x^2-2)

When distributing exponents in this case you want to multiply them

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A researcher wants to test to see if husbands are significantly older than their wives. To do this, he collects the ages of husb

OLga [1]

Complete Question

The complete is shown on the first uploaded image

Answer:

The correct option are option 2 and option 4

Step-by-step explanation:

From the question we are told that

The sample size is n = 12

The test statistics is $t \approx 1.434$

The level of significance is $\alpha = 0.05$

The rejection region is t>1.796

The null hypothesis $H_o: \mu_d=0$

The alternative hypothesis is $H_a : \mu_d >0$

From the given values we see that t < 1.796(i.e 1.434 < 1.796 ) which implies that t is not within the rejection region

Hence we fail to reject the null hypothesis

The conclusion is that there is insufficient evidence to suggest that that the husbands are significantly older than the wife.

4 0

2 years ago

Everett and Marie are going to make brownies for their family reunion. They want to make 4 times the amount the recipe makes. If

denis-greek [22]

8/3 cups or 2 2/3
2/3 × 4/1 = 8/3
if u divide 3 into 8 it gives u 2 times with 2 places left
the 2 places equal 2/3
2 whole OR 6/3 + 2/3 = 8/3 OR 2 and 2/3

3 0

3 years ago

Question One

Alex

Answer:

Step-by-step explanation:

Set up proportions. Make sure length and widths line up!

$\frac{12}{5} =\frac{x}{8}$

Then do butterfly method.

$12(8) = 5x$

Solve for x.

$96 = 5x\\\\x= 19.2 in$

Hope that helped!

7 0

3 years ago

1. -7-(-2) *

Morgarella [4.7K]

1. -7-(-2)
= -7+2= -5

2. 5-(-3)
= 5+3=8

3. -6-4
= -6+(-4)= -10

4. -3-(-3)
= -3+3= 0

8 0

3 years ago

Find the surface area of a sphere with a diameter of 34 meters

Aliun [14]

if its diameter is 34, then its radius is half that or 17.

$\textit{surface area of a sphere}\\\\ SA=4\pi r^2 ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=17 \end{cases}\implies \begin{array}{llll} SA=4\pi (17)^2\implies SA=1156\pi \\\\\\ SA\approx 3631.68~m^2 \end{array}$

4 0

2 years ago

Read 2 more answers