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masya89 [10]
3 years ago
14

Solve all please, thank you!

Mathematics
1 answer:
Mariana [72]3 years ago
5 0

Answer:

Step-by-step explanation:

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WILL MARK BRAINLIEST IF CORRECT
Anon25 [30]

Answer:

A B and E

Step-by-step explanation:

5 0
3 years ago
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PLEASE HELP I WILL MARK AS BRAINLIEST!!! HELP PLEASE!!!!!
Natasha2012 [34]

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The answer would be x=7

4 0
3 years ago
When salt and water are combined, they form a salt or saline solution. How much ml of water must be added to 150 mL of an 80% sa
Vinvika [58]

Answer:

We must add 400 ml of water.

Step-by-step explanation:

We can use the following equation:

C_{i}V_{i}=C_{f}V_{f}

Where:

  • C(i) is the initial concentration of the solution (80%)
  • C(f) is the final concentration of the solution (30%)
  • V(i) is the initial volume (150 ml)
  • V(f) is the final volume

Now, we just need to solve the equation for V(f).

V_{f}=\frac{C_{i}V_{i}}{C_{f}}

V_{f}=\frac{80*150}{30}

V_{f}=400\: ml

Therefore, we must add 400 ml of water.

I hope it helps you!

3 0
3 years ago
Last year at a certain high school, there were 75 boys on the honor roll and 50 girls on the honor roll. This year, the number o
Fantom [35]

In linear equation, 15.2% did the total number of students on the honor roll decrease.

What in mathematics is a linear equation?

  • A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept.
  • Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.

50 × 24% = 12

50 × 14%= 7

12+ 7 = 19

50+75 = 125

19 ÷125= 15.2%

Learn more about linear equation

brainly.com/question/11897796

#SPJ4

8 0
1 year ago
Please answer<br> fasttt
-BARSIC- [3]

Answer:

7.5 lb/cu ft

Step-by-step explanation:

75 lb / 10 cu ft = 7.5 lb/cu ft

4 0
2 years ago
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