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kipiarov [429]
3 years ago
11

a test is worth 90 points and contains 25 questions. multiple-choice questions are worth 3 points each and word problems are wor

th 4 points. How many of each type of question are there?
Mathematics
1 answer:
vampirchik [111]3 years ago
4 0
M + w = 253m + 4w = 90 Let's do substitution, first by solving the first equation for m. m = 25 - w Substitute! 3(25 - w) + 4w = 9075 - 3w + 4w = 90w = 15 m = 25 - 15 = 10 Hope this helps!
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Help me please :) please​
Dafna11 [192]
Tens: 850
Hundredths: 852.97
Tenths: 853
Thousandths: 852.971
Ones: 853
3 0
3 years ago
Read 2 more answers
find three consecutive odd integers such that the sum of the last two is 15 less than 5 times the first​
Viefleur [7K]

2n + 1 , 2n + 3 , 2n + 5

____________________________

( 2n + 5 ) + ( 2n + 3 ) = 5 × ( 2n + 1 ) - 15

4n + 8 = 10n + 5 - 15

4n + 8 = 10n - 10

Add both sides 10

4n + 8 + 10 = 10n - 10 + 10

4n + 18 = 10n

Subtract both sides 4n

4n - 4n + 18 = 10n - 4n

18 = 6n

Divide both sides by 6

18 ÷ 6 = 6n ÷ 6

n = 3

_________________________________

Thus that three numbers are :

2(3) + 1 , 2(3) + 3 , 2(3) + 5

6 + 1 , 6 + 3 , 6 + 5

7 , 9 , 11

And we're done ....

3 0
3 years ago
What is 2+2*2 ? smart people out there HELP plz!
Alecsey [184]

Answer:

the answer is 8

Step-by-step explanation:

hope this helps!

8 0
3 years ago
Find the distance between the points (15,-6) and (10,3). I need to show my work PLEASE HURRY 15 points CORRECT ANSWERS ONLY PLEA
Dominik [7]

Step-by-step explanation:

d = √(15-10)²+(-6-3)²

=√5²+(-9)²

= √25+81

=√106

10.3 units

6 0
3 years ago
QUICK!!!!<br> Does anyone know the answer?
MrMuchimi

Of course they are congruent, that’s why they give you an entire paragraph to write

4 0
4 years ago
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