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3 years ago

X + y = 7 graph each linear equation

Mathematics

1 answer:

amm18123 years ago

3 0

Answer:

y = 7 - x

x = 7 - y

Hope this helps:3

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Use the distributive property to remove the parentheses.

erik [133]

Divide each term in

Cancel the common factor of

Tap for more steps...

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

1.75

Mixed Number Form:

5 0

2 years ago

-6/7 graph on the number line

avanturin [10]

That would be in the II quadrant
So across to negative 6 and up to 7 is your coordinate

5 0

3 years ago

The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent

Leona [35]

Answer: 709

Step-by-step explanation:

The formulas we use to find the required sample size :-

1. $n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = population standard deviation,

E = Margin of error .

z* = Critical value

2. $n=p(1-p)(\dfrac{z^*}{E})^2$ , where p= prior estimate of population proportion.

3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes

$n=0.25(\dfrac{z^*}{E})^2$

Given : Margin of error : E= 3% =0.03

Critical value for 95% confidence interval = z*= 1.96

A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.

i.e. p=0.21

Then by formula 2., the required sample size will be :

$n=0.21(1-0.21)(\dfrac{1.96}{0.03})^2$

$n=0.21(0.79)(65.3333)^2$

$n=(0.1659)(4268.44008889)\\\\ n=708.134933333\approx709$ [Round to the next integer.]

Hence, the required sample size of junior executives should be studied = 709

4 0

3 years ago

I need help now it’s an iready

schepotkina [342]

answer:

21 + 3x (you would not put the x again since it is already given)

step-by-step explanation:

we have to distribute 3 to the expression in the parenthesis

3 (7 + x)

= 21 + 3x

this will be the expression once we distribute

3 0

2 years ago

I need to know what r equals ?

kifflom [539]

It is radius! Hope this helps!! :)

6 0

3 years ago