All categories

2 years ago

Please help me with the whole page. I need the answers and calculations please!

Mathematics

1 answer:

Harman [31]2 years ago

3 0

4: (3/4 - 1/2) X 3/5.

You need them all to have the same denominator (bottom number)
The lowest common denominator (LCM) of 2,4 and 5 is 20
4 X 5 = 20
2 X 10 = 20
5 X 4 = 20

Then multiply the top number by the amount you need to multiply the bottom number by to get 20

3 X 5 = 15
1 X 10 = 10
3 X 4 = 12

(3/4 - 1/2) X 3/5. Turns to (15/20 - 10/20) X 12/20.

15 - 10 = 5
5 X 12 = 60

Answer: 60/20
Simplified: Either 3 or 3/1.

If you use the steps above then you should be able to do the rest :D
If you need anymore help, please ask

You might be interested in

Eight people audition for a choir. The choir director must choose one soprano, one alto, and one tenor. In how many ways can the

aleksandr82 [10.1K]

I think it's C) but the answer should be 6561.

3 groups and 8 people...

$3 {}^{8}$
Will give you your answer

3 0

2 years ago

Need help -2/5x - 9 < 9/10 please explain Will give brainliest

Novay_Z [31]

Answer:

Step-by-step explanation:

5 0

3 years ago

The product of two consecutive odd integers is 72. Write a quadratic equation to find the integers,

zimovet [89]

Answer:

$x^2 + x - 72 = 0$

Explanation:

We are given product of two consecutive odd integers is equal to 72.

Let one integer be x , then since these are consecutive and odd so the other integer will be equal to x + 1.

Their product is equal to 72. So,

x * (x + 1) = 72

=> $x^2 + x = 72$

=> $x^2 + x - 72 = 0$ is the required quadratic equation.

5 0

3 years ago

Explain why any of the four operations placed between two terms 5 and -3 sqrt (8) will result in an irrational number

Gnoma [55]

Sum/difference:

Let

$x = 5 + (-3\sqrt{8}) = 5-3\sqrt{8}$

This means that

$3\sqrt{8} = 5-x \iff \sqrt{8} = \dfrac{5-x}{3}$

Now, assume that $x$ is rational. The sum/difference of two rational numbers is still rational (so 5-x is rational), and the division by 3 doesn't change this. So, you have that the square root of 8 equals a rational number, which is false. The mistake must have been supposing that $x$ was rational, which proves that the sum/difference of the two given terms was irrational

Multiplication/division:

The logic is actually the same: if we multiply the two terms we get

$x = -15\sqrt{8}$

if again we assume x to be rational, we have

$\sqrt{8} = -\dfrac{x}{15}$

But if x is rational, so is -x/15, and again we come to a contradiction: we have the square root of 8 on one side, which is irrational, and -x/15 on the other, which is rational. So, again, x must have been irrational. You can prove the same claim for the division in a totally similar fashion.

7 0

2 years ago

Find the volume of the composite solid. Round your answer to the nearest tenth.

Damm [24]

Answer:

402.12 + 804.24 = 1206.36

8 0

2 years ago

Read 2 more answers