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3 years ago

I'LL MARK YOU BRAINLIST !!

Mathematics

1 answer:

allochka39001 [22]3 years ago

4 0

Answer:

top left choice

Step-by-step explanation:

A car going at a higher speed than a second car will travel more distance in the same amount of time.

Look at the graph. For example, imagine that each grid line on the x-axis is 1 hour. Look at the 5th grid line to the right of the origin. That would mean 5 hours into the trips.

Now imagine that each grid line on the y-axis is 10 miles.

For the low speed car, at 5 hours, it traveled 40 miles.

For the high speed car, it traveled 70 miles in the same 5 hours.

That makes the x-axis the independent variable representing time, and the y-axis the dependent variable representing position.

Answer: top left choice

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TIMED, PLEASE HELP.. VERY LIMITED TIME LEFT

zzz [600]

Reasons:
Reason 3: Congruent supplements theorem

Statements:
Statement 4: Angle 1 is congruent with angle 2

Answer: Option D:
Reason 3: Congruent supplements theorem.
Statement 4: Angle 1 is congruent with angle 2

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3 years ago

How can I do this question

TiliK225 [7]

Hello!

First you have to find the area of the floor

To do this you multiply the sides

4 * 4 = 16

Next you find the area of the rug which is a circle

The equation for this is A = $\pi r^{2}$

r is radius

Put in the values you know

$A = \pi 1.5^{2}$

A = 7.07

Subtract this by the area of the floor

16 - 7.07 = 8.93

The answer is 8.93m squared

Hope this helps!

3 0

3 years ago

Read 2 more answers

If the surface area for the coloured tile is 286cm², find the<br>value of x.<br><br>pls hlp（-""-；)

NNADVOKAT [17]

Answer:

x=8.72389

Step-by-step explanation:

first you make every number 10 times larger

25*10, 48*10, etc etc

you find that you have 12x

the difference between the two surfaces is

120000 (250*480)- 28600= 91400

12x²+20=91400

12x²=91400-20

12x²= 91380

x²=91380/ 12

x²= 7615

x= √7615

x= 87.2389

and since we had made everything 10 times bigger

x=8.72389

i hope you understand i am not good with the words but i think you can understand what i did.

6 0

4 years ago

In 2014, the Centers for Disease Control reported the percentage of people 18 years of age and older who smoke. Suppose that a s

Sergio039 [100]

Answer:

a) 2017

b) 0.3371

Step-by-step explanation:

Given:

Population proportion, P= 0.30

a) To find the sample size.

Let's use the expression:

$n = \frac{(Z_\alpha/2)^2 * P(1-P)}{(M.E)^2}$

Where,

Margin of error, M.E = 0.02

At confidence interval of 95%, = 0.95

$\alpha = 1 - 0.95 = 0.05,$ $\alpha /2 = 0.025, 1 - 0.025 = 0.975$

Using Z table, the Z value for probability of 0.975 is 1.96.

Therefore, Substituting values in the formula, we have:

$n = \frac{(1.96/2)^2 * 0.30(1 - 0.30)}{(0.02)^2}$

n = 2016.84

≈ 2017

The sample size is approximately 2017.

b) With sample size, n = 2017

Sample mean, X = 680

The point estimate of the proportion of smokers in the population will be calculated using the formula :

$P' = \frac{X}{n}$

$P' = \frac{680}{2017} = 0.3371$

The point estimate of the proportion of smokers in the population is 0.3371

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3 years ago

CAN SOMEONE PLEASE ANSWER THESE QUESTIONS ITS 8TH GRADE WORK

Kisachek [45]

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3 years ago