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-BARSIC- [3]
3 years ago
8

Simplify the following expression:,3 + 5 (9+2n)

Mathematics
1 answer:
Rasek [7]3 years ago
6 0
3 + 5(9+2n)
Distribute the 5 to the items in the parentheses 
3 + 5(9+2n)
3 + 45 + 10n
Combine like terms
48 + 10n
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I need help on this can u plsssssss
Anestetic [448]

Inequality: 21d+25≤115

Jim can rent a car for maximum 4 days, therefore, he is not correct in his calculations.

Step-by-step explanation:

Given,

Per day rent = $21.00

Per mile rent = $0.10

Miles to be driven by Jim = 250

Cost of 250 miles = 250*0.10 = $25

Amount Jim can spend = $115.00

Let,

d represent the number of days.

Per day rent*number of days + cost of 250 miles ≤ Total amount to spend

21d+25≤115

Subtracting 25 from both sides

21d+25-25\leq 115-25\\21d\leq 90

Dividing both sides by 21

\frac{21d}{21}\leq \frac{90}{21}\\d\leq 4.28

Jim can rent a car for maximum 4 days, therefore, he is not correct in his calculations.

Keywords: inequality, division

Learn more about inequalities at:

  • brainly.com/question/9880052
  • brainly.com/question/9862781

#LearnwithBrainly

3 0
4 years ago
There is $500 in Holly's bank account. She takes out $50 from her account each month but doesn't put money back in. What is the
galina1969 [7]

Answer:

The rate of change or slope m  = -50

Step-by-step explanation:

The slope-intercept form of the line equation

y = mx+b

where

  • m is the rate of change or slope
  • b is the y-intercept

Given that there is $500 in Holly's bank account.

Thus, the y-intercept b = 500

It is stated that she takes out $50 from her account each month but doesn't put money back in.

It means the rate of change or slope is decreasing.

Thus, the rate of change or slope m  = -50

<u>EXTRA BONUS!</u>

We can also determine the line equation by substituting m = -50 and b = 500 in the slope-intercept form

y = mx+b

y = -50x + 500

Here:

The slope m = -50

The y-intercept = 500

3 0
3 years ago
A ball is thrown into the air with a speed of 32 feet per second. The function h=32t - 16t^2 models the height of the ball after
beks73 [17]

Answer:

t = 1 s

Step-by-step explanation:

The function models the height of the ball after t seconds is given by :

h=32t - 16t^2

We need to find how many seconds does it take for the ball to reach its maximum height.

For maximum height put dh/dt = 0

\dfrac{dh}{dt}=\dfrac{d}{dt}(32t - 16t^2)\\=32-32t

So,

32-32t = 0

t = 1

So, it will take 1 second to reach its maximum height.

7 0
3 years ago
Help me pleasse it’s really late
IceJOKER [234]

Answer:

120 yards

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Mr. Muñoz has a coupon for 15% off his entire purchase. He buys binoculars for $105 and boots. He spends a total of $170 before
aleksandrvk [35]

$9.75

Step-by-step explanation:

total amount _ Binoculars amount

$170_$105=$ 65

therefore before discount boots cost $65

After tax boots cost=15/100 ×$65

15/20× 13

195/20

=$9.75

7 0
3 years ago
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