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Bezzdna [24]
3 years ago
5

What is the expression for "the difference of 3 and 5times a number"?

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0

Answer:

3-5n is the correct answer

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Write each of the mixed numbers below as a fraction greater than one, and write each of the fractions greater
Softa [21]

Answer:

a. 13/3

b. 3 3/4

d. 1 7/8

c. 7/2

Step-by-step explanation:

a. 4 1/3 given

4*3=12 multiply the whole numbers with the denominator

12+1 =13 add the numerator to the product

13/3 put sum over denominator

b. 15/4 given

15/4=3 with a remainder of 3 divide numerator by denominator

3 3/4 rewrite as mixed number

d. 15/8 given

15/8=1 with a remainder of 7 divide numerator by denominator

1 7/8 rewrite as mixed number

c. 3 1/2 given

3*2=6 multiply whole number by denominator

6+1=7 add numerator to product

7/2 put sum over denominator

7 0
2 years ago
Answer Both Parts and I will give u Brainiest and 20 Points!
exis [7]

Answer:

2. t=1.5(d)

Step-by-step explanation:

Part A- t=1.5(d)

Part B- 10.5

4 0
3 years ago
Read 2 more answers
A chemistry teacher needs to mix a 20% salt solution with an 80% salt solution to make 20 qt of a 40% salt solution. How many qu
Svetlanka [38]

Answer:

  • 6 2/3 qt 80%
  • 13 1/3 qt 20%

Step-by-step explanation:

It is often convenient to solve a mixture problem by letting a variable represent the quantity of the higher-concentration contributor to the mix.

__

We can let x represent the number of quarts of 80% solution needed. Then (20-x) is the number of quarts of 20% solution needed. The amount of salt in the final mix is ...

  0.80x +0.20(20-x) = 0.40(20)

  0.60x = 0.20(20) . . . . . . . . subtract 0.20(20) and simplify

  x = 20/3 = 6 2/3 . . . . . . . . . divide by 0.60; quarts of 80% solution

  (20 -x) = 13 1/3 . . . . . . . . . . amount of 20% solution needed

The teacher should mix 6 2/3 quarts of 80% solution with 13 1/3 quarts of 20% solution.

3 0
2 years ago
Which table of ordered pairs represents a proportional relationship
Delvig [45]

Answer:

b

Step-by-step explanation:

Which table of ordered pairs represents a proportional relationship

3 0
3 years ago
Simplest form of -1 5/8 divided by 5 8/9
Crank

Answer:

the answer is -117/424, hope this helps :)

7 0
3 years ago
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