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otez555 [7]
3 years ago
8

There are 5 milliliters of compound A used for every 4 milliliters of compound B. If a chemist wants to make 495 milliliters, ho

w many milliliters of compound A are needed
Mathematics
1 answer:
bija089 [108]3 years ago
8 0

Answer:

275

Step-by-step explanation:

Since there are 4 mm of B for every 5 mm of A that means there are 9 parts in that. Dividing 495 by 9 you get 55 which is how much of each part of the compound there is. Since there are 5 mm of A in each part of A you multiply 5 by 55 to get 275 which is your answer.

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Please help. due today.
guapka [62]

Answer:

1, 1/2, 1 1/2

Step-by-step explanation:

Question 1

20 divided by 18 is 1.1

So the answer is closest to 1

Question 2

9 divided by 20 is 0.45

So the answer is closest to 1/2

Question 3

7 divided by 5 is 1.4

So the answer is closest to 1 1/2

Hope this helps!

3 0
2 years ago
Help please thank you
Ad libitum [116K]
In order for the triangle to be isosceles, we have to set two lengths of the triangle equal to each other. 

Let's take the lengths 5x-12 and x+20 and set them equal to each other. 

5x - 12 = x + 20 

Combine like terms by moving them over to their respective sides.

Subtract x from both sides of the equation. 

4x - 12 = 20 

Add 12 to both sides of the equation. 

4x = 32 

Divide both sides by 4. 

x = 8 

Check your answer by substituting. 

5x - 12 = x + 20

5(8) - 12 = 8 + 20

40 - 12 = 28 

28 = 28

Solution: x = 8 




5 0
3 years ago
Mmunity/classes/5d62d69dab3b9d01c471275e/assignments/ea5fbdc266ba4fb6b42ef10035395865/content/33670082-1319-3919-b805-037d3a9e87
soldier1979 [14.2K]

Answer: 8%

Step-by-step explanation:

the answer is 7.5% but you said its a whole number so i guess its 8%

8 0
2 years ago
Someone please help me
Troyanec [42]
Pythagorean theorem is a^{2} + b^{2} = c^{2}
and using that sin is opposite/hypotenuse, you can find the third side of the triangle.
11^{2}+(adjacent)^{2} = 61^{2} \\ 121+ (adjacent)^{2} = 3721 \\ (adjacent)^{2}=3600 \\ adjacent = 60
now you know adjacent is 60, so cos=60/61
4 0
3 years ago
Xavier Martinez took out a $5,000 loan at 7.5% interest for reconstructing his patio. His monthly payment on the 12-month loan w
Norma-Jean [14]
Paying off the entire loan = 12 * 437.26 = <span> <span> <span> 5,247.12 </span> </span> </span>
He paid 6 * 437.26 = <span> <span> <span> 2,623.56 </span> </span> </span>
He then paid 2,556.03

2,623.56  plus = 2,556.03 = <span> <span> <span> 5,179.59 </span> </span> </span>

<span> <span> 5,247.12 </span> minus </span><span>5,179.59 =
67.53 the amount of money he saved.

</span>
3 0
3 years ago
Read 2 more answers
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