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4 years ago

14

Janice wants to create a test containing 20 questions worth 50 points. If Janice creates questions worth either __two points or

four points, she can include __two-point questions and four-point questions.
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2 answers:

Helga [31]4 years ago

8 0

15 two points and 5 two points

dimaraw [331]4 years ago

6 0

It would be 15 two point questions and 5 four point questions.

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Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are added toge

podryga [215]

Answer:

18 times the first equation and 8 times the second equation

Step-by-step explanation:

we have

$\frac{1}{4}x-\frac{1}{6}y=5$ ------> first equation

$\frac{4}{5}x+\frac{3}{8}y=10$ ------> second equation

step 1

Multiply the second equation by 8 both sides to remove the fraction in the variable y

$8(\frac{4}{5}x+\frac{3}{8}y)=10(8)$

$\frac{32}{5}x+3y=80$

step 2

Multiply the first equation by 18 both sides to obtain the coefficient -3 in the variable y

$18(\frac{1}{4}x-\frac{1}{6}y)=5(18)$

$\frac{18}{4}x-3y=90$

step 3

Adds the new equation 1 and equation 2

$\frac{18}{4}x-3y=90\\\\ \frac{32}{5}x+3y=80\\ -------$

The y-term is eliminated

therefore

The answer is

18 times the first equation and 8 times the second equation

3 0

4 years ago

I don't know what the question is asking.

pshichka [43]

There are different types of parallelograms,and you probably have the notes determining what type it is. So like it could be a square, rectangle, rhombus..

3 0

4 years ago

2. (08.01) Two lines, R and M, are represented by the following equations: Line R: 2x + 2y = 18 Line M: x + y = 9 Which statemen

bulgar [2K]

Answer:

infinitely many solutions

Step-by-step explanation:

Given the 2 equations

2x + 2y = 18 → (1)

x + y = 9 → (2)

Equation (1) is twice (2)

Thus the equations are equal and will have infinite solutions

7 0

3 years ago

Pls help i am not good with volume so i would appreciate some help

Maksim231197 [3]

The formula is:

Volume = Base area x height

We can plug in what you know, "h" represents height.
5/24 = 1/5 x h

Your goal is to isolate the variable, so divide each side by 1/5, which is the same as multiplying with 5.

5/1 x 5/24 = 5/1 x 1/5 x h

Simplify:
25/24 = 1 x h

1h is the same as h, so you've isolated the variable!

h = 25/24

25/24 is the same thing as 1 and 1/24

Thus, h = 1 and 1/24

Let me know if you need more help! :)

4 0

3 years ago

When you buy an item on which sales tax is charged,the total cost is calculated by the formula T=P+s/100p where T is the total c

Gennadij [26K]

Given:

The formula for total cost is

$T=p+\dfrac{s}{100}p$

where, p is the price of item and s is the sales tax rate (as a percent).

You pay $14.77 for an item priced at $14.

To find:

The the tax rate.

Solution:

You pay $14.77 for an item priced at $14. So,

Total cost (T) = $14.77

Price of item (p) = $14

Putting T=14.77 and p=14 in given formula, we get

$14.77=14+\dfrac{s}{100}(14)$

$14.77-14=\dfrac{s}{100}(14)$

$0.77=\dfrac{s}{100}(14)$

Multiply both sides by 100.

$77=14s$

Divide both sides by 14.

$\dfrac{77}{14}=s$

$5.5=s$

Therefore, the tax rate is 5.5%.

7 0

3 years ago