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BartSMP [9]
2 years ago
7

Which phrase describes an unknown or changeable quantity? A. 60 seconds multiplied by 5 B. 2 times the number of pages in the bo

ok C. 15 years of schooling D. 3 dollars and 76 cents
Mathematics
2 answers:
Anna [14]2 years ago
8 0
A.) cause you can’t take away or add seconds
Zepler [3.9K]2 years ago
8 0

The correct answer for APEX is B (2 times the number of pages in the book)

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2 • -1^3 - 3 • -1^2 +7
sertanlavr [38]

Simplify 1^3 to 1

2 × -1 - 3 × -1^2 + 7

Simplify 1^2 to 1

2 × -1 - 3 × -1 + 7

Simplify 2 × -1 to -2

-2 - 3 × -1 + 7

Simplify 3 × -1 to -3

-2 - (-3) + 7

Simplify brackets

-2 + 3 + 7

Simplify

<u>8</u>

3 0
3 years ago
8. If3:8=c:56, the value of c will be
adelina 88 [10]

The scale for the second values is 56/8 = 7

C = 3 x 7 = 21

C= 21

6 0
3 years ago
Help idk how to do this ASAP please
Sergio039 [100]

Answer:

The area of ∆DEF = 4.5in²

Step-by-step explanation:

From the above diagram,

∆BAC ~∆DEF

It is important to note that if two triangles are similar, the ratio of their areas is equal or equivalent to the ratio of the areas of their sides

This means for the above question, that

We have the bigger triangle = ∆BAC has a side of 4 in and Area = 8 in²

The small triangle has a side of 3in

Finding the scale factor k = ratio of the sides of both Triangles

k = 4/3

k² = (4/3)²

k² = 16/9

Hence,

Area of ∆BAC/ Area of ∆DEF = 16/9

8in²/Area of ∆DEF = 16/9

We cross Multiply

8 in² × 9 = Area of ∆DEF × 16

Divide both sides by 16

Area of ∆DEF = 72/16

= 4.5in²

Therefore, the Area of ∆DEF rounded to the nearest tenth = 4.5in²

8 0
2 years ago
HELP 15 POINTS<br> NOT HARD <br> PLEASE
GalinKa [24]

the answer is 9.24*10^18

hope it helps!

8 0
3 years ago
Convert 7/16 to a percent
finlep [7]

Answer:

43.75%

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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