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8090 [49]
3 years ago
8

9/5 times a number plus 6 is 51 ?

Mathematics
2 answers:
sveticcg [70]3 years ago
6 0
- so 9/5 the number is 51-6=45.
- the number is 45 divided by 9/5
- the number is 45 times 5/9
- the number is 25
andriy [413]3 years ago
4 0
51 - 6 is 45
9/5 as a decimal is 1.8
45 divided by 1.8 is 25

Your answer is 25.

Hope this helps!
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If 75 people attend a concert and tickets for adults cost $2.75 while tickets for children cost $2.25 and
Serhud [2]

Answer:

Adult = 39

Children = 36

Step-by-step explanation:

The total number of people = 75

Cost of adult ticket = $2.75

Cost of children ticket = $2.25

Total receipts = $188.25

Let the number of adult = x

Let the number of children = y

X + y = 75 ......equation (i)

(X × 2.75) + (y × 2.25) = 188.25

2.75x + 2.25y = 188.25.......equation (ii)

To find the numbe of adult and children that attended, we'll have to solve equation (i) and (ii) simultaneously.

From equation 1,

X + y = 75

X = 75 - y......equation(iii)

Put equation (iii) into equation (ii)

2.75*(75 - y) + 2.25y = 188.25

206.25 - 2.75y + 2.25y = 188.25

206.25 - 0.5y = 188.25

Collect liketerms

0.5y = 206.25 - 188.25

0.5y = 18

Y = 18 / 0.5

Y = 36

Put y = 36 into equation (i)

X + 36 = 75

X = 39

Therefore the number of adult is 39 while that of children is 36.

4 0
3 years ago
Help me please!!!!!!!!
Over [174]

Step-by-step explanation:

To solve the equation for s we've got to leave s alone

n =  \frac{s + 360}{180}  \\ 180n = s + 360 \\ 180n - 360 = s

5 0
3 years ago
What is the completely factored form of d^4 - 81
Flauer [41]

Answer:

Step-by-step explanation:

d^4-81

(d^2)^2-(9)^2

Using formula

(d^2+9)(d^2-9)

4 0
3 years ago
Read 2 more answers
Helppppp thanksssssssss
klemol [59]
The 3rd or 1st one I'm not sure which one but u have an idea of what it might be
4 0
3 years ago
Given f(x)=3x^2+5 and g(x)=x−2 . What is (fg)(x) ? 3x^2−x+7 3x^3−6x2+5x−10 −3x^2+x−7 3x^3−10
wolverine [178]

For this case we have that by definition:

(fg) (x) = f (x) * g (x)

So:

(fg) (x) = (3x ^ 2 + 5) (x-2)

We apply distributive property that states that:

(a + b) (c + d) = ac + ad + bc + bd

In addition, we take into account that:

+ * - = -

(fg) (x) = 3x ^ 3-6x ^ 2 + 5x-10

Answer:

3x ^ 3-6x ^ 2 + 5x-10

Option B

6 0
3 years ago
Read 2 more answers
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