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3 years ago

How to work out a please

Mathematics

1 answer:

ValentinkaMS [17]3 years ago

6 0

Answer:

a) 7x-5

b )7(100)-5 = 695

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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

wlad13 [49]

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.

5 0

3 years ago

HaAAAaAAaaaaAaaAaAaLp

Tamiku [17]

Answer:

D trust me look

Step-by-step explanation:

Hope This Helped

6 0

3 years ago

Read 2 more answers

Identify the best big-O estimate for the number of comparisons used by the algorithm that determines the number of 1s in a bit s

Westkost [7]

Answer:

0(n)

Step-by-step explanation:

Result previous exercise:

procedure count(a1a2...an : string with n > 1)

i:=0

for k:=1 to n

if ak =1 then i:=i + I

return i

Note: If you use a different algorithm, then you could possible get different results.

SOLUTION

There is only one part of the code that contains an operation (comparison), namely if a_k =1

This comparison is executed in every iteration of the for-loop

k can take on the values from 1 to n (for k:=I to n), thus k can take on n values.

Thus in total there are then n comparisons, while n is 0(n).

5 0

3 years ago

How to divide mixed numbers

aleksandr82 [10.1K]

You can of course use a calculator, but if you can't, just put them into improper fractions. So 2 3/4 as an example would be 11/4. So if you had 2 3/4 divided by 4 1/2, you'd have (11/4)/(9/2).
When you divide fractions, you can multiply by the reciprocal. So you'd go (11/4)•(2/9)=22/36=
11/18

8 0

4 years ago

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The perimeter of a rectangle is 96 units. The length is 24 more than 3 times the width. What are the

evablogger [386]

Answer:

Step-by-step explanation:

To find the width, multiply the length that you have been given by 2, and subtract the result from the perimeter. You now have the total length for the remaining 2 sides.

8 0

4 years ago

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