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3 years ago

7

Suppose we want to test the claim that less than ½ of Americans are in favor of raising the voting age to 21. Is the hypothesis

test left-tailed, right-tailed, or two-tailed?
Group of answer choices

1 answer:

d1i1m1o1n [39]3 years ago

4 0

Two tailed ..? Lol I haven’t learned this yet but I am taking a guess what two tailed

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75383 divided by 14 with a remainder

Lisa [10]

Answer:

5384.5

Step-by-step explanation:

Ez please brainllest

7 0

3 years ago

Read 2 more answers

Solve for x: one over five (5x + 12) = 18 (2 points)

Usimov [2.4K]

If you mean the equation 1/5 (5x +12) =18 then your answer would be x=15.6 or in the exact form of 78/5

Explanation : Start off with distributive property 1/5•5x and 1/5 •12, your equation should end up with 1x +2.4 =18 continue by using the 2.4 and doing the opposite, you will have 1x+2.4-2.4=18-2.4, after calculation you will have 1x=15.6 ,you can finish there or you can divide the 15.6 by one witch is still 15.6 , therefore getting your answer that is x=15.6

8 0

3 years ago

Its in the screenshot

SCORPION-xisa [38]

Step-by-step explanation:

Morgan 12 ras 12× 3 black Total 12×4 or 12 + 3 × 12 = 48 berries

Kendra picked 9 × Morgan's Total

Kendra picked (12 +(3 × 12)) × 9 = 48 × 9 = 432 berries

7 0

3 years ago

Find the mass of the triangular region with vertices (0, 0), (3, 0), and (0, 1), with density function ρ(x,y)=x2+y2.

ololo11 [35]

Since density is the ratio of mass to (in this case) area, we can find the mass of the triangular region $\mathcal T$ by computing the double integral of the density function over $\mathcal T$ :

$\mathrm{mass}=\displaystyle\iint_{\mathcal T}\rho(x,y)\,\mathrm dx\,\mathrm dy$

The boundary of $\mathcal T$ is determined by a set of lines in the $x,y$ plane. One way to describe the region $\mathcal T$ is by the set of points,

$\mathcal T=\left\{(x,y)\mid0\le x\le 3\,\land\,0\le y\le1-\dfrac x3\right\}$

So the mass is

$\mathrm{mass}=\displaystyle\int_{x=0}^{x=3}\int_{y=0}^{y=1-x/3}(x^2+y^2)\,\mathrm dy\,\mathrm dx$

$=\displaystyle\int_{x=0}^{x=3}\left(x^2y+\frac{y^3}3\right)\bigg|_{y=0}^{y=1-x/3}\,\mathrm dx$

$=\displaystyle\int_{x=0}^{x=3}\left(x^2\left(1-\frac x3\right)+\frac{\left(1-\frac x3\right)^3}3\right)\,\mathrm dx$

$=\displaystyle\frac1{81}\int_0^3(27-27x+90x^2-28x^3)\,\mathrm dx=\frac52$

6 0

3 years ago

A whole number divisible by its itself

miskamm [114]

Answer:

Every whole number is divisible by itself and by 1; they are all divisible by something. But if a number is divisible only by itself and by 1, then it is prime.

Step-by-step explanation:

Find a whole number

divide it by itself

ex: 2 divided by two is equal to 1

3 0

3 years ago