Helppppppppp asappppp pleaseeeee 10 pointssssss

Mathematics

1 answer:

myrzilka [38]4 years ago

7 0

Answer:

(9 * 140) / 15

Step-by-step explanation:

For each serving it is 140 calories, and there is 9 servings in that cereal. So you want to multiply 9 by 140. And there are 15 ounces in the box so the amount of total calories are to be divided by 15. Thus C should be the right answer.

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Reika [66]

Answer:

Step-by-step explanation:

<u>Twice the sum of a number and seven is three times the number:</u>

2(x + 7) = 3x
2x + 14 = 3x
3x - 2x = 14
x = 14

5 0

3 years ago

A map is drawn using a scale of 1 inch : 165 miles. The length of the road on the map is 12 inches. Find the actual length of th

maw [93]

Answer:

x= 1980 miles

Step-by-step explanation:

1 inch is to 165 miles as 12 inches is to x

1/165=12/x

x=12*(165/1)

x= 1980

7 0

3 years ago

The value of a motorbike depreciates by 32% per year. Work out the current value of a motorbike bought 5 years ago for £3600

DaniilM [7]

$\bf \qquad \textit{Amount for Exponential Decay}
\\\\
A=P(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &3600\\
r=rate\to 32\%\to \frac{32}{100}\to &0.32\\
t=\textit{elapsed time}\to &5\\
\end{cases}
\\\\\\
A=3600(1-0.32)^5\implies A=3600(0.68)^5\implies A\approx 523.41601$

3 0

3 years ago

Baldo is paid $80 per day at his job, plus $15 per hour for every hour (h) that he works overtime. One day, his total earnings w

Flauer [41]

15h + 80 = 140

If you wanted to solve how many hours he worked:
15h + 80 = 140
15h = 60
h = 4.

6 0

3 years ago

Read 2 more answers

Simplify the expressions. Show your work.

Hunter-Best [27]

7) Use distributive property
3x(4x⁴ - 5x)=3x*4x⁴- 3x*5x = 12x⁵ - 15x²
8) When you open parenthesis with minus sigh in front of it, you need change sings of the terms on opposite. Then find like terms.
(5x⁴-3x³+6x)-(3x³+11x²-8x)= 5x⁴-3x³+6x -3x³-11x²+8x =5x⁴-6x³ - 11x²+14x
9)(x-2)(3x-4)=x*3x-4x-6x+8=3x²-10x+8
10) (x+6)²=(x+6)(x+6)=x²+6x+6x+36=x²+12x+36
For (x+6)², you can also use the formula of the perfect square
(a+b)²=a²+2ab+b²
For (x+6)² =x²+2*x*6 +6²=x²+12x+36

5 0

3 years ago