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barxatty [35]
3 years ago
14

- 9x = 81 plsssss help me will cash app put it below the answer !

Mathematics
1 answer:
Firdavs [7]3 years ago
5 0
Divide both sides of the equation by the same factor. -9/-9 = 81/-9. simplify x= -9 and the answer is x= -9
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A scale for a map states that 2 inches equals 25 miles. If the distance from Dallas to Houston on the map is 19.2 inches, what i
Feliz [49]

Answer:

240

Step-by-step explanation:

\frac{inches}{miles}\\\frac{2}{25}=\frac{19.2}{?}

When doing proportions you multiply the numerator of  one  fraction by the denomenator of the other. Here the available pair is 19.2 and 25. This means that we multiply 19.2 by 25, which equals 480. The next step is to divide by the remaining numerator or denomenator. Here we divide 480 by 2, which equals 240.

6 0
3 years ago
Read 2 more answers
Identify whether each phrase is an expression, equation or inequality.
katrin [286]

\frac{7}{y} < 6 is an inequality.

3-2 is an expression.

4x^{2} +8=9 is an equation.

4 0
2 years ago
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How to find the power of area of a square 3.5² i know the answer is 12.25 but i want the formula of 3.5²​
LiRa [457]

Answer:

3.5^{2} = 3.5 * 3.5 = 12

square means: multiply the number <u>by itself</u> two times. so 3.5 * 3.5

cube (3.5^{3}) means: multiply the number by itself three times. so 3.5 * 3.5 * 3.5

i hope u understand :)

3 0
2 years ago
Evaluate 21/a+4 when a=3
DochEvi [55]

Answer:

11

Step-by-step explanation:

All you have to do is plug in a. In this case, a=3.

21/a+4

21/(3)+4

21/3+4

7+4

11

If this helps please mark as brainliest

5 0
2 years ago
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50% of 42 students are girls. How many of the students are girl's​
Anettt [7]

Answer:

21 girls.

Step-by-step explanation:

50% of 42 students are girls.

So 42/2 = 21.

Therefore 21 of the students are girls.

<em>Hope I helped</em>

3 0
1 year ago
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