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Flura [38]
3 years ago
9

Help me please thank you!!

Mathematics
1 answer:
Roman55 [17]3 years ago
4 0
Number 2 following the angle measures like 90 degress and 180 degress
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mary spends 40% of her monthly earnings on rent and 10% of the remaining amount on entertainment. If she spends $800 for rent, h
liraira [26]

Answer:

<em>$120</em>

Step-by-step explanation:

40% of the earnings is spent on rent.

The earnings is an unknown, so we call it x.

The rent is $800, so 40% of x equals $800.

40% * x = 800

0.4x = 800

x = 800/0.4

x = 2000

She earns $2000 per month.

After paying rent, the remaining amount is

$2000 - $800 = $1200

She spends 10% of the remaining amount on entertainment.

10% of $1200 = 10% * $1200 = 0.1 * $1200 = $120

5 0
3 years ago
A sweater is marked down $25 to $19 what is the percent of change
Marrrta [24]
19/25 = x/100
Cross multiply:
1,900
Divide 1,900 by 25
Equals 76
Subtract 76 from 100
Answer: 24% change

I hope this helps!
7 0
3 years ago
Samuel is going to invest $4,900 and leave it in an account for 14 years. Assuming the
Vladimir79 [104]

Answer:

0.054

Step-by-step explanation:

Using the compound formula A=P(1+r/n)^nt we can plug in the numbers we know. A being the total, P the initial amount, n is the number of compounds in a year, and t is the number of years passing. So 10300= 4900(1+ r/2)^2(14). We have to isolate r in order to find the rate. We can divide both sides by 4900, giving us 103/49= (1+ r/2)^28. Then we take the 28 square root from both sides. 1.02689= 1 + r/2. Subtract 1 from both sides. 0.02689= r/2. Then multiply both sides by two. r= 0.054.

3 0
2 years ago
Find the arc length of the semicircle. Enter an exact answer in terms of . units​
storchak [24]

Answer:

The answer is 37.699111848 units or 0 units, pick

Step-by-step explanation:

2πr (θ/360)

4 0
2 years ago
How do I solve the literal equation 6=mx+b for x? Did not learn this in school as I was absent for two weeks.
NeX [460]
6= mx+b
6-b=mx
x=(6-b)/m
hope you understand
3 0
3 years ago
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