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Anna71 [15]
3 years ago
13

How many counting numbers have three distinct nonzero digits such that the sum of the three digits is 7?​

Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0

Answer:

6

Step-by-step explanation:

You have 2 conditions.

1. The digits must be different.

2. The digits must add to 7.

There aren't very many

124

142

214

241

412

421

That's it. That's your answer. There are 6 of them

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Simplify: -c - 8(4c - 5) - (-18c + 3)
d1i1m1o1n [39]

Answer:

-15c + 2

Step-by-step explanation:

you start by multiplying the coefficients of the parentheses to the numbers inside which gives you

- c - 32c + 5 + 18c - 3

then you simply just group together the like numbers. all "c" 's go together and everything without a "c" goes together

- 1c - 32c + 18c= -15c

5 - 3 = 2

the final answer simplified is

-15c + 2

6 0
3 years ago
Find the value of x. if necessary, round to the nearest tenth a=47sq in
kipiarov [429]

the picture in the attached figure


we know that

area of the triangle is equal to

A=(b*h)/2


in this problem

A=47 in²

b=x

h=x

so

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therefore

the answer is

x=9.7 in

3 0
3 years ago
Read 2 more answers
Express 8 7/40 as a decimal
igor_vitrenko [27]
Answer: 8.175
Explanation: 8 is the whole number so set that aside look at 7/40, using simple division solve for a decimal
7 0
3 years ago
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If skim milk is 87% water, how many cups of skim milk contain 3.58 cups of water?
Elanso [62]
4 is the answer to this question
4 0
3 years ago
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PROCEDIMIENTO POR FAVOR
Allisa [31]

Responder:

Número total de bolas = 245/23

Explicación paso a paso:

Dado que:

Bolas blancas = 1/5

Bolas negras = 1/7

Bolas rojas = 7

Sea el número total de bolas = x

Bolas blancas = 1 / 5x

Bolas negras = 1 / 7x

Por tanto, total;

(x / 5 + x / 7 + 7) = x

((7x + 5x) / 35) +7 = x

(12x / 35) + 7 = x

7 = x - 12x / 35

7 = (35x - 12x) / 35

7 = 23 veces / 35

245 = 23x

x = 245/23

8 0
2 years ago
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