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Nezavi [6.7K]
3 years ago
9

The difference of four times a number and seven is thirteen

Mathematics
1 answer:
Scrat [10]3 years ago
6 0
4n - 7 = 13

 4n  = 20
n = 5. Hope it helps!

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When triangle ABC is rotated about side AB, what figure is formed?
Ne4ueva [31]

I think it’s a pyramid

3 0
2 years ago
Jesse sold cupcakes and cookies yesterday. Each cupcake sold for $1.50 and each cookie sold for $0.25. At the end of the day, Je
ale4655 [162]

Answer: 19 cupcakes and 37 cookies were sold.

Step-by-step explanation:

Let x represent the number of cupcakes that Jesse sold yesterday.

Let y represent the number of cookies that Jesse sold yesterday.

If he sold 56 cupcakes and cookies combined, it means that

x + y = 56

Each cupcake sold for $1.50 and each cookie sold for $0.25. At the end of the day, Jesse had sold $37.75 worth of cookies and cupcakes. This means that

1.5x + 0.25y = 37.75 - - - - - - - - - - -1

Substituting x = 56 - y into equation 1, it becomes

1.5(56 - y) + 0.25y = 37.75

84 - 1.5y + 0.25y = 37.75

- 1.5y + 0.25y = 37.75 - 84

- 1.25y = - 46.25

y = - 46.25/ - 1.25

y = 37

x = 56 - y = 56 - 37

x = 19

7 0
2 years ago
If 3 dogs were 2 ft and 4 were 5 what would be the total height of all of them together
seraphim [82]

Answer:

26 i think

Step-by-step explanation:

since the 3 dogs are 2 feet tall you would multiply them then multiply 4 by 5 and get 20 and 3x2 is 6 you add it up and get 26

7 0
3 years ago
Read 2 more answers
Solve this -5-x=-3x-17
drek231 [11]

Answer:

-6

Step-by-step explanation:

5 0
2 years ago
What is 8y=23+3x divided by 8?
arsen [322]
8y = 23 + 3x divided by 8: divide ALL numbers by 8
8y/8 is y
23/8 is 23/8
3x/8 is 3/8x
Therefore, the answer would be;
y = 23/8 + 3/8x, which is the same as y = 3/8x + 23/8
6 0
3 years ago
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