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mina [271]
3 years ago
14

Which choice is NOT a way to find 9 ÷ 4?

Mathematics
1 answer:
olga_2 [115]3 years ago
8 0
My bet is on D - 1/9 of 4 :)
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Please help I am horrible at math! Ye is riding home from a friend's house. After 5 minutes he is 4 miles from home, after 15 mi
vesna_86 [32]

Answer:

<em>y=-0.2x+5. Correct choice: A)</em>

Step-by-step explanation:

<u>Modeling With Equations</u>

Let's call x the number of minutes and y the distance from home. The correct model should meet both conditions:

After 5 minutes, Ye is 4 miles from home. This is the ordered pair (5,4)

After 15 minutes, Ye is 2 miles from home. This is the ordered pair (15,2)

A) y=-0.2x+5. Testing the first point (5,4): y=-0.2*5+5=4. Correct

Testing the second point (15,2): y=-0.2*15+5=2. Correct

This is the correct choice.

B) y=11/7x-27/7. Testing the first point: (5,4) y=11/7*5-27/7=4. Correct

Testing the second point (15,2). y=11/7*15-27/7=138/7. Incorrect

Incorrect choice.

C) This equation is equal to the choice B), thus this one is incorrect.

D) y=5x-0.2. The first point (5,4) yields to:

4=5*5-0.2=24.8 Incorrect.

6 0
3 years ago
Read 2 more answers
What is the soulation to 2x - 8 greater than 12
Masteriza [31]

Answer:

x > 10

Step-by-step explanation:

7 0
2 years ago
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Melissa walked at a rate of 88 feet per minute. what was her approximate speed to the nearest tenth of a mile per hour? 0.1 mile
Setler [38]
88x60=5280
I believe it's 1 mile. 
6 0
3 years ago
Read 2 more answers
I’ve tried so many things but I can’t find the Answer
Virty [35]

Answer:

let \: that \: be \:  \: x \\ 20\% \: of \: x \: is \: 6 \\  \frac{20}{100}  \times x = 6 \\ 20x = 600 \\ x = 30

3 0
3 years ago
Read 2 more answers
A wire 18 cm long is cut into two pieces. The longer piece is 6 cm longer than the shorter piece. Find the length of the shorter
Yuliya22 [10]

Answer:

shorter piece = 6. longer piece = 12

Step-by-step explanation:

short piece = s

long piece = l

l+s= 18

l= 6+s , substitute

6+s+s = 18

6+2s= 18

2s= 18-6

2s= 12

s=12/2

s= 6= shorter piece

l= 6+s

l= 6+6= 12 = longer piece

7 0
3 years ago
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