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Anestetic [448]
2 years ago
15

What should be done first to evaluate the expression? 3 + (5 - 3)2 × 4

Mathematics
1 answer:
Kryger [21]2 years ago
5 0

Answer:

19

Step-by-step explanation:

19 is the answer I think so

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Explain why the quotient of two integers with different signs is negative PLEASE.
faltersainse [42]

Answer:

Ok, so we have the fact that plus +minus=minus

Thats the fact. It always works that way that same signs means positive and different means negative, as explained with logic.

4+(-5)

So we know that 4 is positive and -5 is negative

if you look at it through a number line, substracting 5 from 4 you have

3--->2---->1---->0---->-1

Under zero, the negatives start, so its proved by maths and logic as well.

Step-by-step explanation:

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3 years ago
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Belinda wants to bye 5 pictures to hang in her family room.if each picture cost $30.90 how much will it cost her to buy all 5?
andre [41]
$154.50 you just multiply 5 and to the amount each picture costs
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3 years ago
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How do you do this, I don’t understand it
Otrada [13]
For the first line start at -1 and from there go up to and to the right three
for the second line on nuber one start at 4 and down 1 and to the left 1
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the area of a square whose sides have length x cm is increasing at the rate of 12cm²/s. how fast is the length of a side increas
katovenus [111]

Answer:

0.67 cm/s

Step-by-step explanation:

The area of a square is given by :

A=x^2 ....(1)

Where

x is the side of a square

\dfrac{dA}{dt}=12\ cm^2/s

Differentiating equation (1) wrt t.

\dfrac{dA}{dt}=2x\times \dfrac{dx}{dt}

When A = 81cm²​, the side of the square, x = 9 cm

Put all the values,

12=2\times 9\times \dfrac{dx}{dt}\\\\\dfrac{dx}{dt}=\dfrac{2}{3}\\\\\dfrac{dx}{dt}=0.67\ cm/s

So, the length of the side of a square is changing at the rate of 0.67 cm/s.

4 0
3 years ago
Miguel asked Sandra to make 90 cookies for his party. Sandra needs ¼ cup of sugar to make 15 cookies. She incorrectly calculated
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Answer:

She incorrectly multiplied 15 X 1/4

Step-by-step explanation:

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