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12345 [234]
3 years ago
12

Paintbrushes cost $0.55 each at a certain store. Evelyn spent $3.85 on paintbrushes.

Mathematics
2 answers:
Anvisha [2.4K]3 years ago
5 0

Answer simply 7

Step-by-step explanation:

Darina [25.2K]3 years ago
4 0
She bought 7 paintbrushes
3.85/ 0.55= 7
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A farmer ships pears in crates that weigh 4.5 lb each when empty. Each pear weighs 0.25 lb. The total weight of a crate filled w
Ipatiy [6.2K]

Answer:

  one-quarter times the number of pears, plus four and one-half is forty-four and one-half

Step-by-step explanation:

The total weight (44.5 lb) will be the sum of the empty weight (4.5 lb) and the number of pears multiplied by the pear's weight. That can be expressed as ...

  one-quarter times the number of pears, plus four and one-half is forty-four and one-half

4 0
2 years ago
Find Value of X<br><br> 88<br><br><br> 82<br><br><br> 76<br><br><br> 94
morpeh [17]
I think it is 88 not sure though
7 0
3 years ago
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A scientist counts 25 bacteria present in a culture and finds that the number of bacteria triples each hour. The function y = 25
Anvisha [2.4K]
y = 25\cdot~3^x\\ \\ 1170 = 25\cdot~3^x\\ \\ \frac{1170}{25} = 3^x\\ \\ \frac{243}{5} = 3^x\\ \\ log\ \frac{243}{5} = log~3^x\\ \\ log~243-log~5=x~log~3\\ \\ &#10; log~3^5-log~5=x~log~3\\ \\ 5~log~3-log~5 = x~log~3\\ \\ 5(0,48)-0,70= 0,48x\\ \\ 2,4-0,7 = 0,48x\\ \\ 1,7=0,48x\\ \\ x=\frac{1,7}{0,48}\\ \\ \large{\boxed{x=3,54\ h}}
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3 years ago
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Gwendolyn is asked to solve the equation –4(x – 3) = 20. She shows the work below and states that the solution is x = –8. –4(x –
____ [38]

Answer:

x=-2

Step-by-step explanation:

Given: Equation is -4(x-3)=20

To find: flaw in Gwendolyn's work and the correct solution to the equation.

Solution:

In the given question,

the first step is -4(x-3)=20

The second step is -4x+12=20

(This step is obtained on multiplying -4 by x-3)

The third step is -4x=32

This step is wrong as on transposing 12 from left side of the equation in the second step to the right side, the following equation is obtained:

-4x=20-12\\-4x=8\\x=-2

So, the correct solution is x=-2

3 0
3 years ago
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The length of a rectangular field is thrice its breadth. Its perimeter is 400 metres. Find its length and breadth.
Tju [1.3M]

Answer:

length= 150m

breadth= 50m

Step-by-step explanation:

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3 years ago
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