X(21)+x(4)=300 I need solving

Mathematics

1 answer:

Genrish500 [490]2 years ago

5 0

Answer:

Step-by-step explanation:

21x + 4x = 300 Put brackets around the first two terms.

(21x + 4x) = 300 Pull the x outside the brackets. Use the distributive property. Combine the left

25x = 300 Divide by 25

25x/25=300/25 Do the division

x = 12

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5 hours 8 min - 3 hours 12 min

belka [17]

Hello,

Here is your answer:

The proper answer is "2.68".

First translate the question:

5 hours and 8 min=5.8

3 hours 12 min=3.12

Now subtract:

5.8-3.12=2.68

Your answer is 2.68!

If you need anymore help feel free to ask me!

Hop this helps!

6 0

2 years ago

Write the phrase as an expression. Then evaluate when y=20.

alisha [4.7K]

Answer:

$Q=\frac{40}{y-16}$

$Q=10$

Step-by-step explanation:

Let the quotient be represented by 'Q'.

Given:

The difference of a number 'y' and 16 is $y-16$

Quotient is the answer that we get on dividing two terms. Here, the first term is 40 and the second term is $y-16$ . So, we divide both these terms to get an expression for 'Q'.

The quotient of 40 and $y-16$ is given as:

$Q=\frac{40}{y-16}$

Now, we need to find the quotient when $y=20$ . Plug in 20 for 'y' in the above expression and evaluate the quotient 'Q'. This gives,