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klemol [59]
3 years ago
8

(A+) It takes a painter and his friend 8 hours to paint a room. If the painter was working alone, it would take him 12 hours les

s than if his friend was working alone. How long does it take the painter to paint the room by himself?
Mathematics
1 answer:
s2008m [1.1K]3 years ago
6 0

Answer:

24 hours

Step-by-step explanation:

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Question 5Ginny has $10,000 in a savings account earning 4% simple interest annually. Ginny plans on savingthis money for a long
Igoryamba

ANSWER

$18,000

EXPLANATION

Ginny has $10,000 in a savings account.

The interest is 4% simple interest.

We want to calculate Ginny's total account balance after 20 years.

To do this, we will first caluclate the interest and then we will add it to the initial balance.

To calculate Simple Interest, we use:

\text{Simple Interest = }\frac{P\cdot\text{ R }\cdot\text{ T}}{100}

P = principal = $10000

R = rate = 4%

T = time = 20 years

Therefore:

SI\text{ = }\frac{10000\cdot\text{ 4 }\cdot\text{ 20}}{100}\text{ = \$8000}

Therefore, her account balance after 20 years is:

Amount = $10000 + $8000 = $18,000

3 0
1 year ago
What form is this equation in y= -3(x-5)^2+7 in?
Marianna [84]

Answer:

vertex form

Step-by-step explanation:

y= -3(x-5)^2+7

This equation is written in vertex form

y = a(x-h)^2 +k

The vertex is (h,k)

8 0
4 years ago
Read 2 more answers
(4 - x ≤ -1) ∩ (2 + 3x ≥ 17)
DaniilM [7]

Step-by-step answer:

Given:

two inequalities:

4-x <= -1  ........................(1)

2+3x >= 17......................(2)

Required: find the solution of the intersection of inequalities.

Solution:

Solution to (1):

4-x <= -1   transpose

4+1 <=x    simplify

5 <= x      rewrite

x >= 5

Solution to (2)

2+3x >= 17

3x >= 17-2

3x >= 15

x >= 5

The intersection of the two solutions x>=5 and x>=5 is therefore x>=5

Check:

x=4, => 4-4 = 0  >1  so not a solution

x=4, => 2+3(4) = 14 < 17 so not a solution

x=5, => 4-5 = -1  so a solution

x=5, => 2+3(5) = 17, so a solution.

similarly for 6, 7, ....

3 0
3 years ago
I need help please…..
melomori [17]

Answer:

GOD BLESS YOU

Step-by-step explanation:

6 0
3 years ago
Please help!!
vesna_86 [32]
1. have you ever borrowed money from a friend?
6 0
3 years ago
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