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SVETLANKA909090 [29]
3 years ago
7

A tank holds 50% of a mixture of acid in water that is 30% acid if 20 gallons of gas are added to the mixture what is the percen

t of acid in the mixture
Mathematics
1 answer:
ehidna [41]3 years ago
3 0
Parts per whole: 50(.30) + 20 is the part that is acid 50 + 20
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I need help solving 6*[(32-8)/4+2] apsp
nlexa [21]

Answer:

24

Step-by-step explanation:

6*[(32-8)/(4+2)]

| |

24 6

6* [24/6]

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4

6*4 = 24

5 0
3 years ago
Use one or more properties to rewrite each expression as an expression that does not use parentheses.
maria [59]

Answer:

b + 9

Step-by-step explanation:

Given:

(b + 3) + 6

Required:

Rewrite expression without the parentheses.

SOLUTION:

(b + 3) + 6

Eliminate the parentheses

b + 3 + 6

Add like terms

b + 9

Thus:

(b + 3) + 6 = b + 9

4 0
3 years ago
Henrietta has a sample of a pure substance in a beaker. She heats the substance to a temperature of 100°C. What will determine i
erica [24]
The answer is c
have a good day
3 0
2 years ago
Read 2 more answers
Jan buys 3 bags of beads. Each bag contains 7 beads. Draw a bar diagram and write an addition equation and a multiplication equa
-Dominant- [34]

Answer:

  - The diagram bar is attached.

  - Addition equation:  7+7+7=21

  - Multiplication equation: (3)(7)=21

  -  How are the equation related? Each equation shows 3 groups of 7.

Step-by-step explanation:

We know that Jan buys 3 bags of beads and each bag contains 7 beads, then, you can draw the bar diagram shown attached.

 Observe that the diagram has 3 blocks (each block represents a bag of bead) and there is a number 7 inside of each block (which is the number of beads contained in a bag).

Therefore:

- Add the numbers inside the blocks in order to get the addition equation that shows the number of  beads Jan buys. This is:

7+7+7=21

- Multiply 3 blocks by 7 in order to get multiplication equation that show the number of beads Jan buys:

(3)(7)=21

The equations are related. Each one shows 3 groups of 7.

6 0
2 years ago
Which expression is equivalent to -8? A=-2^-3 B=(-1/2)^-3 C=(1/2)^-3 D=2^-3
sladkih [1.3K]

Answer:

The answer is option B.

Step-by-step explanation:

( -  \frac{1}{2} ) ^{ - 3}  = ( - 2) ^{3}  =  - 8

Hope this helps you

4 0
3 years ago
Read 2 more answers
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