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Virty [35]
3 years ago
9

What is the missing number? 7/18= 21/? A.3 B.32 C.44 D.54

Mathematics
2 answers:
nexus9112 [7]3 years ago
8 0

Answer:

7x3=21

18x3=54.

<h2>Hope it helps you...</h2>
Westkost [7]3 years ago
3 0

Answer:

D 0.54

Step-by-step explanation:

7/18 = 0.389

21/0.54 = 0.389

Use a calculator to if you're unsure or want to double check. (PS. I used it)

Hope it helped! Don't forget to give it 5 stars and leave a comment below if it helped! Thanks!

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6 is 55% of what number? Round answer to nearest tenth (1 number after decimal)
Arada [10]

Answer:

10.9

Step-by-step explanation:

Formula = Number x 100

Percent = 6 x 100

55 = 10.91

Following shows the steps on how to derive this formula

Step 1: If 55% of a number is 6, then what is 100% of that number? Setup the equation.

6

55% = Y

100%

Step 2: Solve for Y

Using cross multiplication of two fractions, we get

55Y = 6 x 100

55Y = 600

Y = 600

100 = 10.91

8 0
3 years ago
Hello i don't get it pla help me i just want an answer
pshichka [43]

Answer:

-3

Step-by-step explanation:

y = 4x - 3

this equation is put in slope intercept form

y = mx + b

where m = slope and b = y intercept.

we want to find the y intercept

-3 takes the spot of b therefore the y intercept is -3

7 0
2 years ago
I need help with both of these
jeka57 [31]

Answer:

  1. 13x² - 19x + 23
  2. -16x +17

Step-by-step explanation:

1 . (4x² - 9x + 16) + (7 + 9x² - 10x)

4x² - 9x + 16 + 7 + 9x² - 10x

13x² - 19x + 23

2 . (-2x + 6) - (14x - 11)

-2x + 6 - 14x + 11

-16x +17

8 0
3 years ago
Solve the equation using square roots. (X+3)^2=0
Vilka [71]

Answer:

x=3

Step-by-step explanation:

(x−3)^2=0

Set the x−3 equal to 0.

x−3=0

Add 3 to both sides of the equation.

x=3

7 0
2 years ago
What is this answer. The circumference (c) of a circle can be defined as C=2pi r,where r is the radius of the circle. The circum
elena-s [515]

Answer:

Circunferencie can be writen also as a fuction of the diameter of the circle

C = pi*D

Where

D = circunferene diameter

Step-by-step explanation:

C = 2.pi.R = 2.R.pi

In a circle 2.R = D

So,

C = pi.D

5 0
3 years ago
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