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AfilCa [17]
3 years ago
14

Three times a certain number is 21. What is the number?

Mathematics
2 answers:
Goshia [24]3 years ago
7 0

Answer:

The answer is 7

Step-by-step explanation:

an easier way to think of it is 21 divided by 3, which again, is 7.

Hope That Helps!

saveliy_v [14]3 years ago
6 0

Answer:

7

Step-by-step explanation:

Let x be the unknown number

times is multiply and is means equals

3x = 21

Divide each side by 3

3x/3 = 21/3

x = 7

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Answer:

(4.25,6.5)

Step-by-step explanation:

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What is the value of x?<br><br> a. 71°<br> b. 142°<br> c. 152°<br> d. 76°
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3 years ago
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True or false? Which one?
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Step-by-step explanation:

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Find a linear equation whose graph is the straight line with the given property.
jeka57 [31]

Answer:

y = 3/4x - 9/8

Then read explanation and see here with 2 coordinates would make

if 3/4 = -6 then 1 = -8

y = -6x + c

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therefore c = -2.25

y = -6x - 2.25

y = -6x - 9/4  and again 9/4 can be found easily if round up fraction decimal to 225/100 and divide by 4

Step-by-step explanation:

C1)    (0.5 , -0.75)

C2)   ( 1. -3.75)

y = mx + c

-3.75 - - 0.75  /   1 - 0.5  = -3.75 + 0.75 / 0.5

= -3 / 0.5 = m

m = -6

y = -6x + c

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y + 0.75 = 0.75 (x - 0.5)

y + 0.75 = 0.75x - 0.375

y = 0.75 - 0.75   =  0.75x( - 0.375 - 0.75)

y = 0.75x -1.125

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5 0
3 years ago
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