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wel
3 years ago
13

:14=15:21lololololol i have to put 20 characters lolol

Mathematics
1 answer:
Lana71 [14]3 years ago
8 0

Answer:

10

Step-by-step explanation:

x:14=15:21

14/21 = 2/3

Multiply each term by 2/3

15 *2/3 :21*2/3

10:14

The missing number is 10

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Tyna simplified the expression StartFraction 3 x cubed Over 12 x Superscript negative 2 Baseline EndFraction to StartFraction x
Yuki888 [10]

Answer:

She divided the coefficients incorrectly

Step-by-step explanation:

A. She divided the coefficients incorrectly.

B. She added the exponents instead of subtracting them.

C. She divided the coefficients instead of subtracting them.

D. She subtracted the exponents instead of dividing them.

Correct calculation:

3x³/12x^-2

= 3x³ ÷ 12x^-2

= 3x³ ÷ 1/12x²

= 3x³ × 12x²/1

= 36x^5

Tyna's calculation:

3x³/12x^-2 = x/4

3 0
3 years ago
Really stuck on this question plz help!
torisob [31]

Answer:

a) 6:51

b)6:42

c)49 mins

Step-by-step explanation:

5 0
2 years ago
HELP PLS
Neko [114]
Expansions and compressions are transformations that change the length or width of the graph of a function.


 To graph y = a*f (x)
 if a> 1, the graph of y = f (x) is expanded vertically by a factor a. 
 We have then:
 f (x) = 2/5 x ^ 2-2
 The function g (x) is a vertical stretch of f (x) by a factor of 2:
 g (x) = 2f (x)
 g (x) = 2 (2/5 x ^ 2-2)
 g (x) = 4/5 x ^ 2-4

 Answer:
 The equation of g (x) is: 
 g (x) = 4/5 x ^ 2-4
8 0
3 years ago
Dan borrowed money from his parents and he pays back his parents the same amount of money every month He records his payment sch
timurjin [86]

Answer:

D

Step-by-step explanation:

Jmfsxbbihswyvbn

3 0
3 years ago
Please help! I need help on my math grade problem. Please explain if you could
Rus_ich [418]

Answer:

Answer = 3

Step-by-step explanation:

Constant of proportionality = slope

Slope=\frac{y^{2}-y^{1}  }{x^{2}-x^{1}  } =\frac{12-9}{4-3}=\frac{3}{1}=3

4 0
2 years ago
Read 2 more answers
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