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Harrizon [31]
1 year ago
9

Help. How to solve9d + n = 5r

Mathematics
1 answer:
coldgirl [10]1 year ago
7 0

We want to rewrite the following equation

9d+n=5r

With d as a function of the other terms. Let's start by subtracting n from both sides.

\begin{gathered} 9d+n-n=5r-n \\ 9d=5r-n \end{gathered}

Now, let's divide both sides by 9.

\begin{gathered} \frac{9d}{9}=\frac{5r-n}{9} \\  \\ d=\frac{5r-n}{9} \end{gathered}

And this is our final answer.

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a football match,the ratio of children to adults is 2:7.there are 2700 people int he crowd. each adult ticket is £8 each child t
marusya05 [52]

Step-by-step explanation:

since the ratio of children to adult is 2:7,

2+7 = 9

number of children would be

(2 × 2700)/9 = 600 children in the crowd

number of adults would be

(7 × 2700)/9 = 2100 adults in the crowd

So, if a ticket costs £8 per adults, total cash made from adult

= 8 × 2100 = £16800

if a ticket costs £(8 - 3) per children, total cash made from children

= 5 × 600 = £3000

total money made = £(16800 + 3000)

= £19800

7 0
3 years ago
If the diameter of an object is 6 ½ meters, find the radius.
KatRina [158]

Answer:

Step-by-step explanation:

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Radius = 13/4m

5 0
3 years ago
Find the number that makes the ratio equivalent to 1:8.
Lena [83]

Answer:

2:16 i guess

There's no "possible answers"

Step-by-step explanation:

5 0
3 years ago
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The function f(x) = 2.50x + 11.50 relates how much Kate pays for data service, f(x), to the number of songs, x, she downloads in
Over [174]
The function f(x) shows how much Kate pays for the data service for downloading x songs in a month. So f(14) will represent the amount that Kate will have to pay for downloading 14 songs in a month.

f(x) = 2.50x + 11.50

Replacing x by 14, we get:

f(14) = 2.50(14) + 11.50 = 46.5

Thus, Kate will have to pay $ 46.5 for downloading 14 songs in a month 
6 0
4 years ago
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What is the value of x.
aliina [53]

THEOREM:

  • Angle sum property —: The sum of interior angles of a triangle is 180°.

ANSWER:

<u>By angle sum property</u>,

∠U + ∠V + ∠W = 180°

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  • 3x = 180° – 45°
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So, <u>Correct choice</u> - [C] 45°.

4 0
4 years ago
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