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RSB [31]
3 years ago
8

What is the simplified expression

Mathematics
1 answer:
Nady [450]3 years ago
4 0

Answer:

7y - 4x

Step-by-step explanation:

Given

- 3(2x - y) + 2y + 2(x + y) ← distribute both parenthesis

= - 6x + 3y + 2y + 2x + 2y ← collect like terms

= - 4x + 7y

= 7y - 4x

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Two equations are given below:
maw [93]
Let m=n-4
n - 4 + 5n = 20
6n = 24
> n = 4
m = 4 - 4
> m = 0
(0,4)
6 0
3 years ago
The mean amount spent by a family of four on food per month is $500 with a standard deviation of $75. Assuming that the food cos
JulijaS [17]

Answer:

The probability that a family spends less than $410 per month

P( X < 410) = 0.1151

Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given mean of the population = 500 </em>

<em>Given standard deviation of the Population = 75</em>

Let 'X' be the variable in normal distribution

      Z = \frac{x-mean}{S.D}

<em>Given X = $410</em>

<em></em>Z = \frac{410-500}{75} = - 1.2<em></em>

<u><em>Step(ii):-</em></u>

The probability that a family spends less than $410 per month

P( X < 410) = P( Z < - 1.2 )

                  =  0.5 - A( -1.2)

                 = 0.5 - A(1.2)

                = 0.5 - 0.3849  ( ∵from normal table)

                = 0.1151

<u>Final answer:-</u>

The probability that a family spends less than $410 per month

P( X < 410) = 0.1151

6 0
3 years ago
The sum of two numbers must be 14 or greater. The product of the two numbers must be less than 40. Which system of inequalities
Anettt [7]

Answer:

A

Step-by-step explanation:

x+y≥14

xy<40

4 0
3 years ago
Item 7
topjm [15]

Answer:8,5 recirpoal is 5,8

Step-by-step explanation:

8 0
3 years ago
Please answer this I REALLY REALLY REALLY NEED IT....
ziro4ka [17]

The answers to this questions would be:

1. A-> (1.5, 1.5)                              5. A and B->  7 units  

2. B-> (-2, -1.5)                               6. C and D->  3 units  

3. C-> (-3.5, 2)                                7. B and D-> 1 unit

4. D-> (0.5, 0)                                 8. A and D-> 8 units

-------------------------------- WORD PROBLEMS------------------------------------------

9. 8 feet

10a. (-4, -1)                                              10b. (4, 1)


8 0
3 years ago
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