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3 years ago

I need help can yall help me

Mathematics

1 answer:

Marta_Voda [28]3 years ago

3 0

Answer:

Step-by-step explanation:

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A concession stand vendor counts the money in the register. After 1h, it has $42.75. After 5h, it has $260.75. How much money wi

Ira Lisetskai [31]

(1,42.75) (5,260.75)

260.75-42.72= 218.03
5-1= 4

218.03/4= 54.5075

260.75=5(54.5075)
260.75= 272.5375
-272.5375= -11.7875y=54.5075x-11.7875

y=54.5075(8)-11.7875
y=424.27?

3 0

4 years ago

Use f(x)=5x+2 and g(x)=3-x. what is the value of f(g(-1)) and g(f(-1))?

Leya [2.2K]

Answer:

f(g(-1)) = 22

g(f(-1))=6

Step-by-step explanation:

We are given

$f(x)=5x+2 \\g(x)=3-x$

We need to find f(g(-1)) and g(f(-1))

Finding f(g(-1))

First we will find f(g(x)) i.e

$f(g(x))=5(3-x)+2\\f(g(x))=15-5x+2\\f(g(x))=-5x+17$

Now finding f(g(-1)) by putting x=-1

$f(g(x))=-5x+17\\Put \ x=-1\\f(g(-1))=-5(-1)+17\\f(g(-1))=5+17\\f(g(-1))=22$

So, f(g(-1)) = 22

Finding g(f(-1))

First we will find g(f(x)) i.e

$g(f(x))=3-(5x+2)\\g(f(x))=3-5x-2\\g(f(x))=-5x+1$

Now finding g(f(-1)) by putting x=-1

$g(f(x))=-5x+1\\Put \ x = -1\\g(f(-1))=-5(-1)+1\\g(f(-1))=5+1\\g(f(-1))=6$

So, g(f(-1))=6

4 0

3 years ago

Simplify 15 to the 18th power over 15 to the 3rd power

Tanzania [10]

15^15. Answer is 15 to the 15th power because by laws of exponents when you have a base with power m over same base with power n it is base to the m-n power. Simply you subtract the exponents when dividing with same base.

8 0

3 years ago

A clothes shop has some special offers. T-shirts are buy one get one free and jumpers are 3 for 2. The normal price of a T-shirt

zavuch27 [327]

Answer:

£53.40

Step-by-step explanation:

The shop has an offer where you:

buy 1 T-shirt and get 1 free

buy 3 jumpers and get 2 free

This means if a person pays for 1 T-shirt, he/she gets two and if he/she pays for 3 jumpers, he/she gets 5.

Therefore, to buy 4 T-shirt, you have to pay for 2 and to buy 5 jumpers, you have to pay for 3.

1 T- shirt costs £4.80, therefore, 2 will cost:

2 * 4.80 = £9.60

1 jumper costs £14.60, therefore, 3 will cost:

3 * 14.60 = £43.80

Therefore, the customer will sped a total of:

43.80 + 9.60 = £53.40

The customer will pay £53.40 to get 5 jumpers and 4 T-shirts using this offer.

7 0

3 years ago

Please help need to finish ASAP

jok3333 [9.3K]

Look at the picture.

The triangle ADC and the triangle CDB are similar.

Therefore corresponding sides are all in the same proportion:

$\dfrac{y}{4}=\dfrac{12}{y}\ \ \ \ |cross\ multiply\\\\y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\cdot\sqrt3\\\\y=4\sqrt3$

Answer: 4√3

3 0

3 years ago

I need help can yall help me​

I need help can yall help me