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Marrrta [24]
3 years ago
9

Someone please helppp.

Mathematics
2 answers:
svet-max [94.6K]3 years ago
6 0
Ummm I think the answer is 8
Lady_Fox [76]3 years ago
4 0
Set up the equation 3x+1= 4x-7 and you’ll get your answer
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7. The cost of renting the party room for 10 people is $117.50. The cost of renting the room is $151.25 for 15 people. Write an
Viktor [21]

Answer:

C = 6.75n + 50

Step-by-step explanation:

The equation for the cost of renting the party room can be written in the form;

C= mn+k ......i

Where C = cost

n = number of people

Substituting the 2 cases into the equation we have,

Case 1

117.5 = 10m + k ......1

Case 2

151.25 = 15m + k .....2

Subtracting eqn 1 from 2 we have

151.25 - 117.50 = 15m - 10m

5m = 33.75

m = 33.75/5 = 6.75

Substituting m = 6.75 into eqn 1, we have

117.50 = 10(6.75) + k

k = 117.5 - 67.50

k = 50

Therefore, rewriting the eqn i, we have

C = 6.75n + 50

5 0
3 years ago
In the equation 9^2 x 27^3 = 3^x, what is the value of x? <br> Show your work on scratchpaper
IceJOKER [234]

Answer:

x=13

Step-by-step explanation:

9^2 * 27^3 = 3^x

We need to get each term with a base of 3

9^2 = (3^2) ^2

We know that a^b^c = a^(b*c)

(3^2) ^2 = 3^(2+2) = 3^4

27^3 = (3^3) ^3 = 3^(3*3) = 3^9

Replacing these in the original equation

3^4 * 3^9 = 3^x

We know that a^b *a^c = a^(b+c)

3^4 * 3^9  =3^(4+9) = 3^13 = 3^x

The bases are the same, so the exponents must be the same

x=13

7 0
3 years ago
2 less than four times a number is equal to twice a number increase by 8 write an equation and solve to find the value of x
Tom [10]
4x - 2 = 2x + 8
2x -2 = 8
2x = 10
x = 5

4(5)-2 = 2(5)+8
20-2 = 10+8
18 = 18
5 0
3 years ago
A new car is purchased for $17,000 the value of the car depreciates at 12.25% per year what will the value of the car be to the
STatiana [176]
In 14 years it will cost $10,088
5 0
3 years ago
Draw or write to explain why i hundred 4 ten and 14 tens name the same amount
butalik [34]
ten tens are one hundred and then they both have 4 tens or forty
8 0
3 years ago
Read 2 more answers
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