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3 years ago

?????????????? Help

Mathematics

1 answer:

ss7ja [257]3 years ago

8 0

X•X•X•X•X•X•X•X•X•X
That is the answer for your problem

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Donna earns twice as much money per month as omar does. Omar earns $209 more than alex. Together, the three workers earn 3320 pe

Blizzard [7]

Omar makes $882.25 a month

Donna = 2x
Omar = x
Alex = x - 209

4x - 209 = 3320
4x = 3529
x = $882.25

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3 years ago

I need help with both of these problems

GREYUIT [131]

The first question is D because if the
y-intercept is 1 then every point moves down three units.

The second question is J because a vertical line is not a function so it can’t be a linear function.

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3 years ago

Apple launches an ad campaign for iPhone 12. Managers want to know what is the % of social media mentions that have positive rea

Orlov [11]

Answer:

social media mentions do managers at Apple need to collect, if they want to get a margin of error of 2%

Sample size 'n' = 625

Step-by-step explanation:

Step(i):-

Given data Apple launches an ad campaign for iPhone 12

Managers want to know what is the % of social media mentions that have positive reactions to the new ad campaign

probability of positive reactions p = 1/2

Probability of negative reactions q = 1-p = 1/2

we know that $\sqrt{p(1-p}\leq \frac{1}{2}$

Step(ii):-

Given margin of error = 2 % =0.02

The margin of error is determined by

$M.E = \frac{\sqrt{p(1-p} }{\sqrt{n} }$

$0.02 = \frac{\frac{1}{2} }{\sqrt{n} }$

$\sqrt{n} =\frac{1}{2 X0.02}$

√n = 25

squaring on both sides, we get

n = 625

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3 years ago

Whats the definition of quadratic expression

pantera1 [17]

A quadratic expression is any mathematical expression whose power or degree is two. In other words, any expression that uses variables where the highest exponent or the expression's degree is two is a quadratic expression. The expression must have a power of two, no higher nor lower.

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3 years ago

What are so sayings for pemdas?

bearhunter [10]

Answer:

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

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3 years ago

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