I need to show work help meee

Is it a b c d need help

timurjin [86]

Answer:

A

Step-by-step explanation:

The only one going up

8 0

2 years ago

I need help What is the surface area of the following figure? A 168 B 192 PLEASE HELP

Juliette [100K]

Answer:

305 in^2

Step-by-step explanation:

First step is always to break up the problem into parts and write out our formulas- in this case, let's solve the easier part first, the bottom rectangular box type shape.

Area of a square or rectangle: A= length * height

Area of a triangle: A = 1/2 * length * height

Each side is 6x2, making each side 12 in^2, times four sides equals 48 in^2

The box also has a bottom, with dimensions of 6x6, equaling 36 in^2. be careful not to include the top, it may be included in this part of the problem that we're splitting up, but it's not in the actual figure.

Next up is the top portion- let's calculate the two triangular sides first. again, A=(1/2)l*h . so, these triangles are (1/2) * 5 * 4 , or 10 in^2 . With two triangular sides that's 20 in^2 total.

And now we only have two sides left, the rectangular parts of the triangular prism. They have a dimension of 5*6, equalling 30, and with two sides its a total of 60 in^2.

All of these sides can be added together:

48 + 36 + 20 + 60 = 305 in^2

3 0

3 years ago

Read 2 more answers

Given the system of linear equations

kvasek [131]

Use the slope-intercept form to find the slope and y-intercept.
Slope:
3
3
y-intercept:
(
0
,
2
)

6 0

3 years ago

A certain star is 1.135 × 10^14 km away from Earth. If light travels at 9.4607 × 10^12 km per year, how long will it take for li

Yuliya22 [10]

Answer:

Approximately 11.99 years

Step-by-step explanation:

This is just a type of problem like finding how long it will take for you to get somewhere. Like in finding how fast you need to go to go to a place that is 60 miles in one hour. All you have to do is divide the distance of the star by the speed of light, and you get the amount of time it will take for the star's light to reach the Earth.

4 0

2 years ago

In a recent poll, 30 percent of adults said they wanted to "cut down or be free of gluten," according to The NDP Group, the mark

prisoha [69]

Answer:

The value of the standardized test statistic for this significance test is -1.25.

Step-by-step explanation:

We are given that in a recent poll, 30 percent of adults said they wanted to "cut down or be free of gluten".

The researcher conducts a survey of a random sample of 25 students at her university and five of them say they want to at least reduce gluten.

Let p = population proportion of students wanting to reduce gluten at the university.

So, Null Hypothesis, $H_0$ : p = 30% {means that the proportion wanting to reduce gluten at the university is the same as for all adults}

Alternate Hypothesis, $H_A$ : p < 30% {means that a smaller proportion of students would say they want to reduce or be free of gluten}

The test statistics that would be used here One-sample z test for proportions;

T.S. = $\frac{\hat p-p}{\sqrt\frac{\hat p(1-\hat p)}{n} {} }$ ~ N(0,1)

where, $\hat p$ = sample proportion of students who would say they want to reduce or be free of gluten = $\frac{5}{25}$ = 0.20

n = sample of students taken = 25

So, the test statistics = $\frac{0.20-0.30}{\sqrt\frac{0.20(1-0.20)}{25} {} }$

= -1.25

The value of standardized z test statistic is -1.25.

4 0

3 years ago