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faltersainse [42]
2 years ago
13

Melissa drove 715 miles in 11 hours.

Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
6 0

Answer:

455 miles driven in 7hrs

Step-by-step explanation:

715miles divided by 11 hrs= 65 miles per hr

65 miles multiplied by 7 hrs= 455 miles driven in 7hrs

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If there are 9 girls and 11 boys in a class, what percentage of the class are girls
viva [34]
1. Find the total number of class members
    9 + 11 = 20

2. Find 9 as a percentage of 20
    9 / 20 = 0.45
    0.45 x 100 = 45%

<u>45% of the class are girls.</u>
6 0
3 years ago
What is the value of k?
poizon [28]
Ugh there should be a problem or something ? enter a image?
4 0
2 years ago
Read 2 more answers
|-3+(-1)|= simply the expression
Andreyy89

Answer:

4

Step-by-step explanation:

First, solve in the brackets,

-3+(-1)

-3-1

-4

Since it is absolute value, take the minus sign away,

therefore the answer is 4

8 0
3 years ago
An office building has two elevators. One elevator starts out on the 4th floor, 35 feet above the ground, as it’s defending at a
iren2701 [21]

The system of equations are y = 35 - 2.2x and y = 1.7x

<em><u>Solution:</u></em>

Given that, office building has two elevators.

<em><u>One elevator starts out on the 4th floor, 35 feet above the ground, as it’s descending at a rate of 2.2 feet per second</u></em>

Let "x" be the number of seconds for which the elevator is descending

Therefore, for "x" seconds the descended feet is 2.2x feet

The elevator is at 4 th floor, 35 feet above ground

Therefore, from 35 feet, the elevator has descended 2.2x feet for "x" seconds

Let "y" be the final position of elevator after "x" seconds

Therefore,

y = 35 - 2.2x

<em><u>The other elevator starts out at ground level and is rising at a rate of 1.7 feet per second</u></em>

Here, the elevator is rising at a rate of 1.7 feet per second

Therefore, for "x" seconds, the elevator has raised 1.7x feet

Here the elevator is at ground level, therefore

y = 1.7x

Thus the system of equations are y = 35 - 2.2x and y = 1.7x

6 0
3 years ago
I need help on this one
mel-nik [20]

Answer: 4/9

Step-by-step explanation:

apply product rule to 2/3 2^2  /   3^2

7 0
2 years ago
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