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4 years ago

What makes the equation true?20- 4=6+4+?

2 answers:

6 0

The answer would be 6 because 20-4=16. So to make it equal to that 6+4=10. Since it is not you need 6 more so answer is 6.

AveGali [126]4 years ago

4 0

The number 6 makes the equation true. This is because, 20 - 4 = 16. Now, 6 + 4 = 10. To make the equation equal, we must add 6 to make it 16. Hope this helps! :) Pls mark me the brainliest!! :)

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15. I had 180 mL of water in a measuring cylinder. I added a stone. The reading is now 195 mL. What is the volume of the stone?

alexira [117]

Answer: 15 mL

Step-by-step explanation:

Before the stone the reading was 180 mL

When the stone was added the reading rose to 195 mL

So, we subtract them both, this will give us the volume of the stone

195 mL - 180 mL = 15 mL

7 0

3 years ago

Find three consecutive even integers such that the square of the third is 60 more that the square of the second

lana [24]

Answer:

-4,4,16

Step-by-step explanation:

They are all even integers.

-4^2=16

4^2=16

16^2=256

the square of the third,16 is 256 which is more than the square of the second,4=16

4 0

4 years ago

Given that cos(30°) = cos(45°)cos(15°) + sin(45°)sin(15°), it follows that cos(30°) =

mario62 [17]

Answer:

$cos(30\°) = cos(45\°-15\°)$

Step-by-step explanation:

To solve this problem you must know the formula of subtraction of angles for the function cosx.

The formula is:

$cos(h-d) = cos(h)cos(d) + sin(h)sin(d)$

We can write 30° as: 45° - 15°

Then:

$cos(30\°) = cos(45\°-15\°)$

Using the formula for subtraction of angles we have:

$cos(45\°-15\°) = cos(45\°)cos(15\°) + sin(45\°)sin(15\°)$

Notice that we have achieved the expression shown in the statement

Finally:

$cos(30\°) = cos(45\°-15\°)$

8 0

3 years ago

Read 2 more answers

What are parallel lines and perpendicular lines

lana66690 [7]

Answer:

Parallel run next to each other perpendicular are like paralell lines. If that makes sence

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A circle with center (-1, 2) and radius of 8 has the equation

Bond [772]

Answer:

Step-by-step explanation:

4 0

3 years ago