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2 years ago

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NEED HELP QUICK! Points P, Q, and R are shown on the number line. What is the distance between point P and point R? A) 47 units

B) 61 units C) 121 units D) 132 units ' The numberline is below.

1 answer:

FromTheMoon [43]2 years ago

5 0

C ) 121

Explanation : Add 91 + 30 to get 121

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Can anybody answer this simple math question ive attached please

Vedmedyk [2.9K]

Well first you take the amount that Connor paid, $29.25 and subtract the base price for the pizza, $17.50

$29.25 - $17.50 = $11.75

Then you divide that number by the base price of 1 topping, $2.35

11.75 / 2.35 = 5

So Connor got 5 toppings on his pizza.

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3 years ago

A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th

katen-ka-za [31]

Answer:

Part (A): The correct option is true.

Part (B): The null and alternative hypothesis should be:

$H_o: \mu =0 ; H_a:\mu \neq0$

Step-by-step explanation:

Consider the provided information.

Part (A)

A random sample of 100 students from a large university.

Increasing the sample size decreases the confidence intervals, as it increases the standard error.

If the researcher increase the sample size to 150 which is greater than 100 that will decrease the confidence intervals or the researcher could produce a narrower confidence interval.

Hence, the correct option is true.

Part (B)

The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.

Therefore, the null and alternative hypothesis should be:

$H_o: \mu =0 ; H_a:\mu \neq0$

7 0

3 years ago

What is the sum of the polynomials (-x^2+9)+(-3x^2-11x+4)

Marta_Voda [28]

You can just add the terms:

<span>(-x^2+9)+(-3x^2-11x+4) = -4x</span>² - 11x + 13

6 0

3 years ago

Read 2 more answers

Name the property 3 = 3

tatyana61 [14]

Equal? I don’t rlly understand what this means

5 0

3 years ago

Grace is three times as old as Hans, but in 5 years she will be twice as old as Hans is then. How old are they now? Set up an th

frosja888 [35]

Answer:

3x - y = 0; 2x - y = -5

Step-by-step explanation:

Let x be the present age of Hans and y be the present age of Grace,

Since, in present Grace is three times as old as Hans,

⇒ y = 3x

⇒ 3x - y = 0

Now, after 5 years,

The age of Hans = x + 5,

And, the age of Grace = y + 5

Also, in 5 years Grace will be twice as old as Hans is then,

⇒ y + 5 = 2 ( x + 5 )

⇒ y + 5 = 2x + 10

⇒ 2x - y = -5

Hence, the required system of linear equations is,

3x - y = 0; 2x - y = -5

5 0

3 years ago