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antiseptic1488 [7]
4 years ago
7

PLEASE HELPPPPP ITS URGENT!

Mathematics
1 answer:
Afina-wow [57]4 years ago
5 0

Answer:

x = 3.5

Step-by-step explanation:

Triangle ACD and triangle CDB are similar.

So, they are proportional in dimensions to each other.

Now,

( x / 5 ) = ( 4.2 / 6 )

x = 3.5

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A chemistry teacher needs to mix a 20% salt solution with a 80% salt solution to make 25 qt of a 44% salt solution. How many qua
NNADVOKAT [17]
Let there be x quarts of the 20% salt solution, and (25 - x) quarts of the 80% salt solution.
Then the total amount of salt in the 20% portion would be 0.2x, while that from the 80% portion would be (0.8)(25 - x). This would have to total up to (0.44)(25) in the final solution, so the equation is:
0.2x + 0.8(25 - x) = (0.44)(25)
-0.6x + 20 = 11
x = 15 quarts of the 20% salt solution
25 - x = 10 quarts of the 80% salt solution
5 0
3 years ago
A circular rug covers 48 square feet. What is the radius? Use 3 for pie.
Alex17521 [72]

Answer:

I believe it would be 24 sq ft. Radius is a line draw from the center of the circle out, also known as 1/2 of the circle. So by dividing 48 by 2 you should get 24.

8 0
2 years ago
Definition of Accreditation
Liula [17]

official approval given by an organisation when something / somebody achieves a certain standard

hope it helps you ✌

6 0
3 years ago
If the base of a triangle is 20mm and the area of the triangle is 40m2. then what will be the height and how can we find it​
Eddi Din [679]

Use the formula for area of a triangle:

Area = 1/2 x base x height.

Fill in what you know:

40 = 1/2 x 20 x height

Multiply both sides by 2:

80 = 20 x height

Divide both sides by 20

Height = 4 m

3 0
3 years ago
Read 2 more answers
Which choices are real numbers. Check all that apply. A. (-1024)^1/4. B. (-131072)^1/16. C. (-256)^1/9. D. (-531441)^1/13
vredina [299]

Answer:

B

Step-by-step explanation:

That is my final answer so I maybe wrong so don't take my word for it

4 0
3 years ago
Read 2 more answers
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