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tatyana61 [14]
2 years ago
14

Solve for X. Show your work 3x(2x - 5) = (3x - 4)(2x + 1)

Mathematics
1 answer:
laila [671]2 years ago
5 0

3x(2x - 5) = (3x - 4)(2x + 1)

6x² - 15x = 6x² + 3x - 8x - 4

6x² - 15x - 6x² - 3x + 8x = -4

-10x = -4 / : (-10)

x = 0,4

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Help?<br> Would the answer for this be (-9,3) or (3,9) or (9,-3) or (-9,-3)???
Levart [38]

Answer:

(-9, 3)

Step-by-step explanation:

To rotate a point 270°:

R₂₇₀ (x, y) = (y, -x)

So the answer would be (-9, 3).

5 0
3 years ago
3 groups of students went to the burger barn for a study break and snack. the first group ordered 4 burgers, 5 fries, and 7 drin
lora16 [44]

Answer:

Cost of one burger, a = $3.35

Cost of one fries, b = $0.9

Cost of one drink, c = $1.1

Step-by-step explanation:

Let

a be cost of one burger

b be the cost of on fry

c be the cost of on drink

So for the 1st group, 4a+5b+7c = $25.60     -----------(1)

     for the 2st group, 8a+5b+6c = $37.90     ----------(2)

     for the3st group, 12a+10b+11c = $61.30    ----------(3)

Now solving (1) and (2)

That is (1) x 2 - (2) gives,

5b+8c = 13.80 ----------------------(4)

Now, (1) x 3 - (3), we get

5b+10c = 15.5    ---------------------(5)

Solving (4) and (5), we get

c = 1.1

Now putting c in equation (4), we get

b = 0.9

Now from (1), we get

4a+5b+7c = $25.60

4a+5(0.9)+7(1.1) = $25.60

a = 3.35

Cost of one burger, a = $3.35

Cost of one fries, b = $0.9

Cost of one drink, c = $1.1

7 0
3 years ago
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Sergeu [11.5K]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Malcolm is trying a very low-carbohydrate diet. He would like to keep the amount of carbs consumed in grams between the levels s
Ostrovityanka [42]

Answer:

The correct option is 2.

Step-by-step explanation:

The given inequalities are

50             .... (1)

2x+10            .... (2)

Solve each inequality.

Subtract 10 from each side of inequality (1).

50-10

40

Divide both the sides by 2.

20

The value of x is more than 20.

Subtract 10 from each side of inequality (2).

2x+10-10

2x

Divide both the sides by 2.

x

The value of x is less than 50.

Since x > 20 and x < 50, therefore Malcolm needs to consume more than 20 grams of carbohydrates, but less than 50 grams of carbohydrates.

Hence the correct option is 2.

4 0
3 years ago
Alondiscoperis building two circuior gardens. The smaller garden hos a sodius of 2 meters. The larger garden has an area that is
Vesnalui [34]

Answer:

4\pi * 7 = 28\pi

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Step-by-step explanation:

7 0
2 years ago
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