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sergey [27]
2 years ago
10

The 7 times the sum of a number and 6 IS 63

Mathematics
1 answer:
matrenka [14]2 years ago
4 0

Answer:

Missing number = 3

Step-by-step explanation:

Let x be the missing number. We have the following:

7\cdot (6+x)=63,\\6+x=9,\\x=\boxed{3}

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Slove system of equation.<br><br> 2x - 6y = 8<br> -3x + 9y = 12
Bond [772]
Answers:

2x - 6y = 8 -> x = 4 + 3y

-3x + 9y = 12 -> x = -4 + 3y
7 0
2 years ago
The ratio of men to women at a meeting is 7:6.If there are 28 men at the meeting;
yanalaym [24]

Answer:

a. 24 woman

b. 28 men and 24 women

Step-by-step explanation:

a.

given: men to women = 7:6

find: number of women

solution: 28 / 7 = 4, 4 * 6 = 24 women

b.

given: number of men

find: number of men and women

solution: 28 men and 24 women

<em>hope this helps....</em>

8 0
3 years ago
Read 2 more answers
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 108.7-cm and a standard dev
Luden [163]

Let x be the lengths of the steel rods and X ~ N (108.7, 0.6)

To get the probability of less than 109.1 cm, the solution is computed by:


z (109.1) = (X-mean)/standard dev

= 109.1 – 108/ 0.6

= 1.1/0.6

=1.83333, look this up in the z table.


P(x < 109.1) = P(z < 1.8333) = 0.97 or 97%

3 0
3 years ago
If you can help me youre a legend :)
AleksandrR [38]

Answer:

A. 9

B. 7

Step-by-step explanation:

A. 11 - 2 = 9

B. 1 + 6 = 7

4 0
3 years ago
Read 2 more answers
Explain Mean Value Theorem ​
erica [24]

Answer:

Step-by-step explanation:

The Mean Value Theorem states that if a function f is continuous on the closed interval [a,b] and differentiable on the open interval (a,b), then there exists a point c in the interval (a,b) such that f'(c) is equal to the function's average rate of change over [a,b].

4 0
2 years ago
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