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3 years ago

A case of water costs $3.80. If Safeway marks up the price 10%, what is the new price of the

Mathematics

1 answer:

anyanavicka [17]3 years ago

5 0

Answer:

$4.18

Step-by-step explanation:

You take $3.80 and multiply by it .1 (turn 10% into a decimal by moving the decimal to the right two places).

This gives you .38

Then you add .38 to $3.80 which gives you $4.18.

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A firm offers routine physical examinations as part of a health service program for its employees. The exams showed that 8% of t

Alexxandr [17]

Answer: A. 0.20

Step-by-step explanation:

Let A be the event of employees needed corrective shoes and B be the event that they needed major dental work .

We are given that : $P(A)=0.08\ ;\ P(B)=0.15\ ;\ P(A\cap B)=0.03$

We know that $P(A\cup B)=P(A)+P(B)-P(A\cap B)$

Then, $P(A\cup B)=0.08+0.15-0.03= 0.20$

Hence, the probability that an employee selected at random will need either corrective shoes or major dental work : $P(A\cup B)= 0.20$

hence, the correct option is (A).

6 0

4 years ago

REALLY NEED HELP ANYONE? If f(x) = 4^x then which of the following is the value of f (-2)?

myrzilka [38]

$f(x) = 4^x$

When x = -2

$f(-2) = 4^{-2}$

$f(-2) = 4^{-2} = \dfrac{1}{16}$

5 0

3 years ago

I Need help Find the length of ad

Bingel [31]

Answer:

AD = 104

Step-by-step explanation:

Since is the perpendicular bisector of AD, then

DB = AB, that is

9x - 2 = 7x + 10 ( subtract 7x from both sides )

2x - 2 = 10 ( add 2 to both sides )

2x = 12 ( divide both sides by 2 )

x = 6

Thus

AD = 7x + 10 + 9x - 2 = 16x + 8 ← substitute x = 6

AD = 16(6) + 8 = 96 + 8 = 104

7 0

3 years ago

Use the grouping method to factor the polynomial below. x^3+4x^2-3x-12

Rina8888 [55]

Answer:

(x+4) (x^2-3)

Step-by-step explanation:

Hope this helps

6 0

3 years ago

Read 2 more answers

PLEASEEEE ASAP

Alexeev081 [22]

Answer:

The balance in dollars and cents in Mr. Jenkins’s account at the end of 4 years was $ 1,462.50

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Initial deposit = $ 1,250

Interest rate = 4.25% annual simple = 0.0425

Time of investment = 4 years

2. What was the balance in dollars and cents in Mr. Jenkins’s account at the end of 4 years?

Let's recall the simple interest formula, as follows:

A = P * (1 + rt), where:

A = final amount

P = initial principal balance

r = annual interest rate

t = time (in years)

Replacing with the values we know:

A = P * (1 + rt)

A = 1,250 * (1 + 4 * 0.0425)

A = 1,250 * 1.17

A = 1,462.50

The balance in dollars and cents in Mr. Jenkins’s account at the end of 4 years was $ 1,462.50

7 0

4 years ago