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rewona [7]
2 years ago
13

QUESTION 10

Mathematics
2 answers:
VARVARA [1.3K]2 years ago
4 0

Answer:

  • See below

Step-by-step explanation:

Let the first test score is x, then the next two are x - 10 and x - 20 and the total of three is 258.

<u>We can reflect this as:</u>

  • x + x - 10 + x - 20 = 258

<u>Solving we get:</u>

  • 3x - 30 = 258
  • 3x = 258 + 30
  • 3x = 288
  • x = 288/3
  • x = 96

<u>The scores are:</u> 96, 86 and 76

alexandr402 [8]2 years ago
3 0

Answer:

let the grade points be a,b,c

a+b+c=258

b=c+10( since she noticed that on tests two and three,she scored 10 points fewer).

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Jen used a card to make the purchase, and she received a bill within 15 days of the purchase. She paid $21.30 for the next 18 months until the bill was paid in full. The full payment included $58.60 in interest.

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5 0
3 years ago
What are the equivalent fractions with a common denominator for 2/5 and 1/2?
Svetlanka [38]
So 1/2 is 5/10       and 2/5 is 4/10      common denonominator is 10 ( i think )
4 0
3 years ago
Read 2 more answers
Help me solve these step by step please !!!
Anettt [7]

Answer:

#2) is 25

Step-by-step explanation:

the best way to solve any of theses is in the order of pemdas:

●parentheses

●exponents

●multiplication & division

●addition & subtraction

for example lets do #2

9+ (2^2)(4)

the first parenthesis has exponents so you'd do it first. 2^2 (two two times) is 4

9+(4)(4)

when two parentheses are next to Each other you multiply. 4x4 is 16

9+16

then finally you add

25

use these steps for the rest. just comment if you have any questions

7 0
3 years ago
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If the square root of x is greater than x then x could be
Shtirlitz [24]
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8 0
3 years ago
How many liters are equal to 3,167 milliliters? Use the placement of the decimal point when dividing by a power of 10 to help yo
Marrrta [24]

Answer:

3.167 liters

Step-by-step explanation:

1 liter = 1,000 milliliters

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3 0
3 years ago
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