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goldenfox [79]
4 years ago
9

A painter uses the expression 35 h + 30 c to determine how much he charges a customer for a job that takes h hours and c cans of

paint. His last job required 3 cans of paint and took 15 hours to complete. How much did the painter charge?
Mathematics
1 answer:
ira [324]4 years ago
4 0

Answer:

615

Step-by-step explanation:

Here, there is an equation that determine the amount charged by a painter for a paint job. The equation takes into cognizance the number of hours used and also the number of paints used.

To actually get the amount he charged, we need to substitute the number of cans and number of paints he used.

Now to get that amount, we work as follows:

Let’s say the amount is A.

For 3 paint cans and 15 hours of work, we substitute c with 3 and h with 15

A = 35h + 30c

A = 35(15) + 30(3)

A = 525 + 90 = 615

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Ghani is going o use these instructions to make a fizzy drink. Mix 5 parts of lime juice with 3 parts of lemonade. Ghani thinks
koban [17]

Answer:

The greatest amount Ghani could make of fizzy drink is <u>480 ml</u>.

Step-by-step explanation:

Given:

Ghani is going o use these instructions to make a fizzy drink. Mix 5 parts of lime juice with 3 parts of lemonade. Ghani thinks that he has 300ml of lime juice and 200 ml of lemonade.

Now, to find the greatest amount of fizzy Ghani could make.

Let the ml of lemonade be x.

As, for making fizzy drink 5 parts of lime juice with 3 parts of lemonade are mixed.

So, 5 is equivalent to 3.

Ghani has 300ml of lime juice.

Thus, 300 is equivalent to x.

Now, to get the ml of lemonade we use cross multiplication method:

\frac{5}{3} = \frac{300}{x}

<em>By cross multiplying we get:</em>

<em />5x=900<em />

<em>Dividing both sides by 5 we get:</em>

x=180\ ml.

Hence, the lemonade is 180 ml.

Now, we add the quantity of 180 ml lemonade with 300 ml lime juice to get the fizzy drink:

180+300\\\\=480\ ml.

Therefore, the greatest amount Ghani could make of fizzy drink is 480 ml.

7 0
3 years ago
(2x+10)+(2x-30) please help me
Sonja [21]

Answer:

4x-20

Step-by-step explanation:

2x + 2x =4x

10 + (-30) = -20

put it together!

4x-20

(i hope thats the answer form u were asking for) xoxo raina

6 0
3 years ago
Read 2 more answers
Find the percent of the number <br>105% of 400​
just olya [345]

Answer:

105% of 400 is 420, the percent is 42000%

Step-by-step explanation:

6 0
3 years ago
Geometry Math
Ghella [55]

Answer:

The. angle is 72 and the supplement is 108

Step-by-step explanation:

Supplementary agnles are two angles with a sum of 180. So for example, two right angles would be supplementary.

Once again lets break this down by putting it into an equation. The supplement will be x. We know that 180 - x ( the supplement) will be equal to the angle but the angle is 2/3 the supplement.

Your equation should look like this x = 2/3 (180 - x).

Then we're going to multiply both sides by 3 to get 3x = 2 (180 - x)

You should distribute the 2 on the right side to then get 3x = 360 - 2x

You want to get x by itself but you can't make it just disappear because you need to keep your equation balanced. You're going to need to add 2x to both sides making your equation 5x = 360.

then you're going to divide 360 by 5 to get x = 72

subtract 72 (your angle) from 180 to get 108 which is your supplement.

If it's a bit confusing feel free to msg me and I'll do my best to explain it a bit better ^^;

3 0
3 years ago
Can you please tell me how to do easy way can you please show me in numbers how to multiply ​
almond37 [142]

same as before, we look at the denominators, hmmm do a quick prime factoring.

3 = 3 * 1

9 = 3 * 3 * 1

since 9 already contains 3 and 1, we can us that

\cfrac{\underline{2}}{3}~~ - ~~\cfrac{1}{9}\implies \cfrac{(2)\underline{2}~~ - ~~(1)1}{\underset{\textit{using this LCD}}{9}}\implies \cfrac{4-1}{9}\implies \cfrac{\stackrel{1}{~~\begin{matrix} 3 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}{\underset{3}{~~\begin{matrix} 9 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}\implies \cfrac{1}{3}

4 0
3 years ago
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