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den301095 [7]
3 years ago
14

Write an equivalent expression for 3x + 21

Mathematics
1 answer:
Arada [10]3 years ago
7 0
3(x + 7)
hope this helps
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Calculate to the nearest million m³.the current amount of water in the berg river dam​
swat32

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the dimension of the dam is not given.

However, a general way of calculating volume is to calculate the base area and the multiply by height.

Take for instance,the dam has a rectangular base of 20m by 30m.

The base area will be

Area = 20m * 30m = 600m²

If the height of the water in the dam is 40m, then the volume is:

Volume = 600m² * 40m

Volume = 24000m³

7 0
3 years ago
What Is the value of:<br> 30-2(7+2)-1?<br> 11<br> 14<br> 17<br> 19
il63 [147K]

Answer:

11

Step-by-step explanation:

The answer is 11 because 2x7=14+2x2=4. 14+4=18-1=17. 30-17= 11

3 0
3 years ago
Read 2 more answers
Please Hurry) What is the length of side AC of the triangle? □ units. ​
NARA [144]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

\boxed{\mathrm{AC = 25 \:\: units ~}}

\large \boxed{ \mathfrak{Step\:\: By\:\:Step\:\:Explanation}}

As we can see in the given figure, Angles A and B are equal. therefore their opposite sides will be equal to one another, that is ~

  • AB = BC

now, let's plug the values of AB and BC in terms of x and equate them to find the value of x ~

  • 5x + 5 = 7x - 1

  • 7x - 5x  = 5 + 1

  • 2x = 6

  • x = 6 \div 2

  • x = 3 \:  \: units

now , let's find the measure of side AC ~

  • AC = 6x + 7

that is ~

  • 6(3) + 7

  • 18 + 7

  • 25 \:  \: units

8 0
3 years ago
Use substitution to solve the system of equations.
dusya [7]

Answer:

A

Step-by-step explanation:

1/2(2/3y) - 1/3y = 5

1/3y - 1/3y = 5

0 ≠ 5

No Solutions

These are linear equations and, when graphed, are parallel

7 0
3 years ago
HELP MATH 5th GRADE please lolo
statuscvo [17]

Take it one step at a time. First solve for how many white blood cells.

10 to the third power equals 1000. 7 times 1000=7000.

You then want to multiply 7000 by 6 times 10 to second power. 10 to the second power equals 100, and 100 times 6 equals 600. 600 times 7000 equals 4200000. Does this make sense? Correct me if I'm wrong.

4 0
3 years ago
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