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3 years ago

Maths help , whats a and b plsssssss

Mathematics

1 answer:

Bezzdna [24]3 years ago

7 0

Step-by-step explanation:

there is a scanner on this app scan the question with it and it will give you the answer ♡ good luck ♡

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Answer circled questions, please

Harlamova29_29 [7]

#1: 4(x + 3)

We just have to distribute the 4 throughout the rest of the problem. So, (4 times x) + (4 times 3) = 4x + 12

#2: -7(4 - y)

This is the same concept, but with a negative sign at the front. So, (-7 times 4) - (-7 times y) = -28 + 7y

3 0

3 years ago

Read 2 more answers

Please help.................

Vedmedyk [2.9K]

Answer:

We can see that it is an isosceles triangle so base angles are equal.

Step-by-step explanation:

x + x + 56 = 180

2x = 180 - 56

2x = 124

x = 124/2

Therefore x = 62.

4 0

3 years ago

Please help me!!!!!!

anastassius [24]

The answer is A

Step-by-step explanation:

hope it helps!!

3 0

2 years ago

Read 2 more answers

A scuba diver diving with an 80 cubic foot tank of air, needs to resurface when his air in the

Burka [1]

At sea level atmospheric pressure is 1 bar absolute (1 standard atmosphere =101 kPa=1.013 bars). The weight of the atmosphere exerts a pressure which will support a column of water 10 m high; 10 m under water the pressure on a diver is 200 kPa. The volume of gas in an early diving bell full of air at sea level is halved at 10 m according to Boyle’s law; at 20 m pressure is 300 kPa absolute and the gas is compressed into one third the volume.

Dry air is composed of roughly 21% oxygen, 78% nitrogen, and 1% other gases. According to Dalton’s law the partial pressure of oxygen at any depth will be 21% of the total pressure exerted by the air and the partial pressure of nitrogen will be 78% of total pressure.

Gases dissolve in the liquid with which they are in contact. Nitrogen is fat soluble and at sea level we have several litres dissolved in our bodies. If the partial pressure of nitrogen is doubled (by breathing air at 10 m depth) for long enough for equilibration to take place we will contain twice as many dissolved nitrogen molecules as at sea level.

6 0

3 years ago

The figure below is rotated 270° clockwise about the origin .List the coordinates of the image.

meriva

Answer:

A (-4, -4), B (-2, 6), C (-1, 1), D(-3, -5)

Step-by-step explanation:

Before the rotation:

A (-4, 4), B (6, 2), C (1, 1), D(-5, 3)

270° rotation clockwise is the same as 90° counterclockwise. To do that transformation:

(x, y) → (-y, x)

Therefore, the coordinates of the rotated figure are:

A (-4, -4), B (-2, 6), C (-1, 1), D(-3, -5)

5 0

3 years ago