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timurjin [86]
2 years ago
5

Which inequality represents all the solutions of 9(4x-8) < 4(6x + 9)?

Mathematics
1 answer:
oksano4ka [1.4K]2 years ago
4 0

Answer:

x < 9

Step-by-step explanation:

Our original inequality:

9(4x-8) < 4(6x+9)

Firstly, let's expand the brackets on both sides:

36x - 72 < 24x + 36

Now, we add the 72 over to isolate the x:

36x < 24x + 108

Next, we take away the 24x to isolate the x:

12x < 108

Finally, we divide both sides by 12 to convert the 12x to x:

x < 9

This means our final answer is x < 9.

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Answer:

Negative.

Step-by-step explanation:

Hope this helps.

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2 years ago
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Can someone help with this math word problem.
iragen [17]

Answer:

Step-by-step explanation:

Time taken to eat the pizza in seconds =28×60=1680 seconds

If it takes 20seconds to lift, bite and chew,

Then the total bites taken to finish the pizza =1680/20 =84 bites

If for each bite 9cm² disappeared, then area that disappeared for 84bites =84×9cm² = 756cm²

Total area of pizza =756cm²

If area =(πd²)/4,

Then d² =(4×A)/π

d²=4×756/3.14=963.06

d=√963.06 = 31.03cm

1 centimeter=0.394inches

31.03cm= 0.394×31.03=12.23 inches ≈ 12inches(to the nearest inch)

The diameter of the pizza is 12inches

7 0
3 years ago
Plz help me !!!!!!!!!!!
Artist 52 [7]

Split the second term in 3a^2 - 8a + 4 into two terms

3a^2 - 2a - 6a + 4 = 0

Factor out common terms in the first two terms, then in the last two terms.

a(3a - 2) -2(3a - 2) = 0

Factor out the common term 3a - 2

(3a - 2)(a - 2) = 0

Solve for a;

a = 2/3,2

<u>Answer : B. (2/3,2)</u>

6 0
3 years ago
A microwave is placed on top of two boxes. One box is 4 feet 7 inches tall the other box is 4 feet 9 inches tall and the microwa
Vikentia [17]
The answer is 12 feet 3 inches
7 0
3 years ago
The path followed by a roller coaster as it climbs up and descends down from a peak can be modeled by a quadratic function, wher
Romashka [77]

Answer:

y = -0.1x^2 + 250 ft

Step-by-step explanation:

Because this quadratic equation would have the curve-down form of:

y = -ax^2 + b

where a and b are positive coefficient.

If we let the peak (250 ft) of the curve be at x = 0. Then

y = -a0^2 + b = 250

b = 250

Also at the begins and ends, thats where y = 0, the 2 points are separated by 100 ft. So let the begin at -50 ft and the end at 50ft. We have

-a(\pm 50)^2 + 250 = 0

-a2500 = -250

a = 250/2500 = 0.1

Therefore, the model quadratic equation of our path would be

y = -0.1x^2 + 250 ft

8 0
3 years ago
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