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True [87]
3 years ago
7

A test has 19 questions worth a total 100 points. There are ten-point questions and four-point questions. How many questions of

each kind?
Mathematics
2 answers:
butalik [34]3 years ago
5 0
10 points: 4 questions: 4*10=40
4 points: 15 questions: 4*15=60
60+40=100
hope it helps

kramer3 years ago
3 0
X + y = 19

10x + 4y = 100

This is a systems of equations. 

Isolate x from the first equation:
x = 19 - y

Now, plug it into the second:

10(19 - y) + 4y = 100
190 - 10y + 4y = 100
-6y + 190 = 100
-6y = -90
y = 15

Plug y in and solve for x:
10x + 4(15) = 100
10x + 60 = 100
10x = 40
x = 4

There are four 10-point questions and fifteen 4-point questions.
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weqwewe [10]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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In what time will Rs. 5600 amount to Rs. 6720 at 8% per annum?​
Leona [35]

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I hope this helps

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2 years ago
X2 =5. What is the answer for X
grin007 [14]

Answer:

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