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2 years ago

Please only geniussssssssssssssssss

Mathematics

1 answer:

Naya [18.7K]2 years ago

7 0

Check the picture below.

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Help? i do not understand how to get the answer...

Oduvanchick [21]

Answer:

Step-by-step explanation:

Let x ml be the amount of paint color B mixed with 40 ml of paint color A.

In 40 ml of paint color A are 15% of black pigment, so there are

$0.15\cdot 40\ ml$

of black pigment.

In x ml of paint color B are 60% of black pigment, so there are

$0.6\cdot x\ ml$

of black pigment.

In total we het x+40 ml of mixture. There are 25% of black pigment that is

$0.25\cdot (x+40)\ ml.$

Thus,

$0.15\cdot 40+0.6\cdot x=0.25\cdot (x+40).$

6 0

3 years ago

What is the value of x?<br> Please explain...

docker41 [41]

Answer:
X=14

Explanation:
The question tells us that the triangle is an equilateral triangle, meaning all of its side lengths are equal.

The perimeter of the triangle is all the lengths added together, so we can say this:

Perimeter=3(1.75x-2)

And since the question tells us the perimeter, we can input that into the equation as well.

67.5= 3(1.75x-2)

And now we solve:

67.5= 3(1.75x-2)
Distribute 3 into the parentheses
67.5=5.25x-6
Combine like terms (move -6 to the other side)
67.6+6=5.25x
73.6=5.25x
Divide both sides by 5.25
73.6/5.25=5.25x/5.25
14=x

I hope this helps! Please comment if you have any questions.

5 0

3 years ago

What is the value of z in the equation 3z+9=z?

Dmitry_Shevchenko [17]

Answer:

Answer: The value of z is 12 .

Hope it helps you.

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

1. A professional basketball used for league play has a diameter of 25 cm. Which of the following is closest to the volume of th

yKpoI14uk [10]

Answer:

V = 8,181.23 $cm^{3}$

Step-by-step explanation:

Unfortunately, we are not given any answer choices to choose from but using the information provided we can find the actual volume of the basketball. A basketball is made in the shape of a sphere and the formula for the volume of a sphere is the following...

V = $\frac{4}{3} * \pi * r^{3}$

radius of a circle/sphere is half of it's diameter. Since we are provided the diameter size we simply divide it by 2 which would give us 12.5cm. Now we simply plug this value into the formula and solve for V.

V = $\frac{4}{3} * \pi * 12.5^{3}$

V = $\frac{4}{3} * \pi * 1953.125$

V = 8,181.23 $cm^{3}$

5 0

2 years ago

The half life of a radioactive kind of cadmium is 14 years. How much will be left after 28 years, if you start with 72 grams of

nlexa [21]

Answer:

18 grams

Step-by-step explanation:

8 0

2 years ago