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grin007 [14]
3 years ago
6

Em uma avaliação que vale até 5 pontos, João tirou 4,2 pontos. Quanto João teria tirado caso a prova valesse 10 pontos?

Mathematics
1 answer:
scoray [572]3 years ago
4 0

Answer:

8.4 pontos

Step-by-step explanation:

4.2/5

multiplique o numerador e o denominador por 2

8.4/10

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I'm begging you! HELP ME
love history [14]
Okay first off. You want to combine like terms. 

2.75-1.5=1.25j 
2.25+3=5.25

Now you just fit those two answers into the final answer and you have:

1.25j+5.25.
7 0
3 years ago
A lawn in the shape of a trapezoid has an area of 1,833 square meters. The length of the other base is 42 meters. What is the he
Klio2033 [76]
The area of a trapezoid can be found with this formula:

A=\frac{1}2(b_1+b_2)h

Where b1 and b2 are the bases and h is the height.

If we plug in what we know we can solve for the height.
We know that b1 = 52, b2 = 42, and A = 1833. Let's solve.

1833=\frac{1}2(52+42)h\\1833=\frac{1}2\times94h\\1833=47h\\\boxed{h=39\ m}
3 0
3 years ago
Terry goes to the store to buy a shirt. The original price is $32. The shirt is
Anton [14]

Answer:

The closest amount paid is $23

<em></em>

Step-by-step explanation:

Given

Price = \$32

Mark\ down = 20\%

Amount = 10% of Marked down price

Required

Determine the amount paid

First, we calculate the marked down price P2:

P_2 = Price(1 - Mark\ down)

Substitute values for Price and Mark down

P_2 = \$32 * (1 - 20\%)

Express percentage as decimal

P_2 = \$32 * (1 - 0.20)

P_2 = \$32 * (0.80)

Remove bracket

P_2 = \$32 * 0.80

P_2 = \$25.6

The payable amount is 10% off the marked down price,

This is calculated as:

Amount = P_2 - P_2 * 10\%

Substitute $25.6 for P2

Amount = \$25.6  - \$25.6* 10\%

Express percentage as decimal

Amount = \$25.6  - \$25.6* 0.10

Amount = \$25.6  - \$2.56

Amount = \$23.04

<em>The closest amount paid is $23</em>

8 0
3 years ago
21. 2n= 53 <br><br> Explanation of the division please, and how you got the answer
Ksju [112]

Answer:

2n= 53

and you divide both sides by 2

2n/2 =53/2

2 divided by 2 is 1 and 53 divided 2 is 26.5

n= 26.5

5 0
3 years ago
Please help.............:)
Alex787 [66]

Answer:

113

Step-by-step explanation:

Multiply

6 0
3 years ago
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