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3 years ago

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Gabriella is x years old. Her sister, Felicia, is six years older than she is. Their aunt, Tanya, is x years older than their mo

ther. Write and simplify an expression that represents Tanya’s age in years

1 answer:

tamaranim1 [39]3 years ago

5 0

The answer is 6. Because she is six years older but she is still six don’t matter what

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Assume you invest $3,000 in an account that pays 7% compounded monthly. How much money will be in the account after 6 years?

omeli [17]

Use A = P(1+r/n)^(nt).

Here, A = $3000(1+0.07/12)^(12*6). Can you evaluate this?

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3 years ago

What does the off center rectangle mean in the picture?

Alla [95]

2/5+4/7=2
14/35+20/35=2
34/35=2
FALSE
so the rectangle must be a placeholder that is added
so 34/35+x=2
x=1 1/35 or 36/35

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3 years ago

Please help with question 2 50 points for answer and brainliest

dedylja [7]

Answer:

b) Reflection over y = -2

Step-by-step explanation:

Reflection over y = -2

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3 years ago

A news agency publishes results of a recent poll. It reports that candidate A leads candidate B by 10% because 45% of the poll p

natali 33 [55]

We need to use the formula to find Margin of Error but through the sample proportion, that is

$E=z*\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$

We will use a 95% confidence interval, that is a z value of 1.96 (Search in a Normal distribution table)

A) For A our $\hat{p}$ (proportion) is equal to 0.45. So applying the formula,

$E=1.96*\sqrt{\frac{0.45(1-0.45)}{900}}$

$E=3.25\%$

B) We make the same of point A, but change our proportion to 0.35

$E=1.96*\sqrt{\frac{0.35(1-0.35)}{900}}$

$E=3.116\%$

c) We need to calculate the SE through proportion for 0.1, that is

$SE = \sqrt{(\frac{\hat{p_1}(1-\hat{p_1})}{n})+(\frac{\hat{p_2}(1-\hat{p_2})}{n})}$

Then our Error is given by,

$E=z*SE$

$E=1.96*\sqrt(0.45*\frac{0.55}{900}+0.35\frac{0.65}{900}$

$E=0.045$

7 0

3 years ago

What is x?: 22+54x= -20 + 60x

DENIUS [597]

Answer:
x = 7

Explanation:
We are given
22 + 54x = -20 + 60x

We can add 20 on both sides using the Addition Property of Equality
42 + 54x = 60x

Subtract both sides by 54x using the Subtraction Property of Equality
42 = 6x

Divide both sides by 6 using the Division Property of Equality
x = 7

8 0

3 years ago