3 years ago

True or False 12/30 and 18/45 are proportional

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

5 0

True. If you divide 12 into 30 and 18 into 45...they both equal 0.4

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If 3x - (7 - x) = 29, find the value of 6x. A 6x=54 B 6x=60 C 6x=46 D 6x=45

Katyanochek1 [597]

Answer:

6x=54

Step-by-step explanation:

3x - {7-x} =29

open bracket

3x - 7 +x =29

collect like terms and equate

4x =29 +7

4x = 36

divide both sides by 4

x = 9

. . 6x= 6 × 9 = 54

6x= 54

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3 years ago

Given that f(x) = 5x - 10 and g(x) = x + 3, find f(g(-1)).

musickatia [10]

$\bf \begin{cases} f(x) = 5x-10\\ g(x) = x + 3 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ g(-1)=(-1)+3\implies \boxed{g(-1) = 2} \\\\\\ f(~~g(-1)~~)\implies f\left( \boxed{2} \right) = 5(2)-10\implies \stackrel{f(~g(-1)~)}{f(2)}=0$

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4 years ago

Read 2 more answers

Hall and Mindy are playing a guessing game. Hall tells Mindy: ""The difference between 17 and the square root of my mystery numb

cestrela7 [59]

Answer:

The possible number that Hall could be thinking of is 144.

Step-by-step explanation:

Difference between 17 and the square root of my mystery number

This is represented by:

$17 - \sqrt{x}$

is 5

Then:

$17 - \sqrt{x} = 5$

What are two possible numbers that Hall could be thinking of?

We have to solve the equation, for x. So

$17 - \sqrt{x} = 5$

$\sqrt{x} = 12$

$(\sqrt{x})^2 = (12)^2$

$x = 144$

The possible number that Hall could be thinking of is 144.

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3 years ago

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The picture's height was reduced by 60% to 40%

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(x2-13x-48)÷(x+3) dividing polybomials

-BARSIC- [3]

The final awser is x-16
hope this is what u needed

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3 years ago