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Alex17521 [72]
3 years ago
11

Pls help due today just need 9,10, 11

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0

Answer:

pls post the questions ;(

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Cammie can mow 1/2 acre in 25 minutes. If her rate is constant, Cammie says she can mow 1 1/4 acres in one hour. Is Cammie corre
Sergeu [11.5K]

Answer: No, Cammie is not correct. She can mow  1\frac{1}{5}\ acres in one hour (See explanation).

Step-by-step explanation:

Convert the mixed number to an impoper fraction:

1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.

2. The denominator does not change.

Then:

1\frac{1}{4}=\frac{(1*4)+1}{4}=\frac{5}{4}

Let be "x" the acres Cammie can mow in one hour.

You know that she can mow \frac{1}{2}\ acre in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):

\frac{\frac{1}{2}}{25}=\frac{x}{60}

Solving for "x", you get:

\frac{\frac{1}{2}}{25}=\frac{x}{60}\\\\(60)(\frac{1}{50})=x\\\\x=\frac{6}{5}

Convert from improper fraction to mixed number:

1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.

2. The remainder is 1. This will be the numerator.

3. The denominator does not change.

Then:

x=1\frac{1}{5}

Therefore, she can mow  1\frac{1}{5}\ acres in one hour.

3 0
3 years ago
I need help please ..
Vinvika [58]

Answer:

660.5

Step-by-step explanation:

6 0
3 years ago
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Is b = 15 a solution to the equation 4b - 20 = 40?<br><br> yes<br><br> no <br><br><br> WICH ONE
Step2247 [10]

Answer:

Yes

Step-by-step explanation:

4 x 15 = 60. 60 - 20 = 40

8 0
3 years ago
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1. −4n−8=4(−3n+2)<br> 2. a−15=4a−3<br><br> what is the solution for 1 and what is the solution for 2
Contact [7]

Answer:

n = 2 and a = - 4

Step-by-step explanation:

(1)

- 4n - 8 = 4(- 3n + 2) ← distribute parenthesis

- 4n - 8 = - 12n + 8 ( add 12n to both sides )

8n - 8 = 8 ( add 8 to both sides )

8n = 16 ( divide both sides by 8 )

n = 2

(2)

a - 15 = 4a - 3 ( subtract a from both sides )

- 15 = 3a - 3 ( add 3 to both sides )

- 12 = 3a ( divide both sides by 3 )

- 4 = a

3 0
3 years ago
Convert 85 to a hexidecimal
leonid [27]
I think the answer is 55
7 0
4 years ago
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