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Ira Lisetskai [31]
2 years ago
12

A test has 20 question and is worth 100 points. The test consists of true or false questions worth 3 points each and multiple ch

oice questions worth 11 points each. How many multiple choice questions are on the test?
Mathematics
2 answers:
Blizzard [7]2 years ago
8 0
10 or 15 that is what I think
SVETLANKA909090 [29]2 years ago
3 0
X=number of true or false
y=number of multiplule choice

total questions is 20
x+y=20

total poits is 100
3x+11y=100

eliminate x's

multiply first equaiton by -3 and add to 2nd

-3x-3y=-60
<u>3x+11y=100 +</u>
0x+8y=40

8y=40
divide both sides by 8
y=5

5 multipule choice questions
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PLEASE HELP AND SHOW YOUR WORK!!
trasher [3.6K]

Answer: The answer would be B) 9% Decrease!

275 - 250 = 25.

25/275 = 0.0909090909

0.0909090909 x 100 = 9.09090909091

Finally you'd round it to 9%.

Therefore there was a 9% decrease in the amount of large pizzas.

Hope this helps (: Stay safe.

8 0
3 years ago
Read 2 more answers
jen makes necklaces by stringing different color beads. each necklace is 18 inches long. jen has an 86-inch length of beaded str
miv72 [106K]
You have to divide 86 by 18 .which she can make about 5 necklaces
4 0
3 years ago
Read 2 more answers
Adding fraction <br> Of my homework
amid [387]

Answer:

2/5?

Step-by-step explanation:

i think thats the answer for number six

6 0
3 years ago
Read 2 more answers
Which equation shows the commutative property of multiplication?
Sophie [7]

Answer:

the answer is 7•2=2•7

Step-by-step explanation:

Hope it helps.

5 0
3 years ago
Estimate the area of a circle with a radius of 16 meters. Use 22/7 or pi
Dmitrij [34]
1. Area of a circle is pi(R)^2 , where R is the radius. So we can substitute:

22/7(16^2) = about 805 meters squared.

2. Let's find the area of the rectangle first.

A=LW
A= 18(10)

A= 180 cm squared.


Now the semi-Circle:

The radius of the circle is 9 (because 18/2 is 9). Now we plug in to the area formula:

22/7(9^2) = about 254 cm squared. But because that is the area of the whole circle, and we only need half of the circle, we divide that value by 2 to get:

127 cm squared for the semi-circle.

Now we add up the rectangle and semi-circle's areas:

180 + 127 = 307 cm squared as your answer.


I hope this Helps!
3 0
2 years ago
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