All categories

3 years ago

What is the answer to this question?

Mathematics

1 answer:

Soloha48 [4]3 years ago

4 0

The answer is A because if you go from each point on Q to R it is 7 units away

You might be interested in

Help, I’m no good with slope

postnew [5]

All you have to do is graph whatever those #'s are, so whatever numbers are top are the number that are on the bottom of the graph, and whatever #'s are on top are the numbers going up on the graph.

5 0

4 years ago

Mr. Thomas has $25. He buys 15 greeting card and 15 envelopes. Greeting card cost $1.60 each and envelopes cost $0.80 each. How

Luden [163]

15*1.6 + 15 * .8 =

24 +12=36

He needs 36 dollars

If he has 25 dollars, he is short 11 dollars

8 0

3 years ago

Find the Area of shaded region, please give step by step explanation and answer fast pls

DanielleElmas [232]

Answer:

22cm²

Step-by-step explanation:

radius of smaller circle= 7/2=3.5cm

area of smaller circle=π×3.5=11cm²

area of bigger circle=π×10.5(radius is 7 plus 3.5)=33cm²

area of shaded area=33-11=22cm²

5 0

3 years ago

The vertex of this parabola is at (-2, 5). Which of the following could be it’s equation? A. Y=3(x+2)^2-5 B. Y=3(x-2)^2-5 C. Y=3

Mariulka [41]

Answer: C. $y=3(x+2)^{2} +5$

Step-by-step explanation:

1. You have the following equation of the parabola in Vertex form:

$y=a(x-h)^{2}+k$

Where h is the x-coordinate of the vextex and k is the y-coordinate of the vextex.

2. You know that the vertex of this parabola is at (-2, 5), then, susbtitute this point into the equation. Then, you obtain:

$y=3(x+2)^{2}+5$

3. Therefore, the answer is the option C.

5 0

3 years ago

Read 2 more answers

Automobile mechanics conduct diagnostic tests on 150 new cars of particular make and model to determine the extent to which they

galben [10]

Answer: 0.0944

Step-by-step explanation:

Given : Sample size of cars : n= 150, sample size is greater than 30 , so we use z-test.

Number of cars tested do have faulty catalytic converters =42

Then the proportion of cars have faulty catalytic converters : $\hat{p}=\dfrac{42}{150}=0.28$

Critical value of z for 99% confidence level : $z_{\alpha/2}=2.576$

Formula for Margin of error :

$E=z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$E=(2.576)\sqrt{\dfrac{0.28(1-0.28)}{150}}\\\\=0.0944377199216\approx0.0944\ \text{Rounded to four decimal places}$

Hence, the required margin of error = $0.0944$

6 0

3 years ago