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VLD [36.1K]
3 years ago
13

What is the product of 2x - 5 and 3x2 + 5x - 7? Write your answer in standard form.

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

Answer:

a) 6x³ − 5x² − 39x + 35

b) no

Step-by-step explanation:

(2x − 5) (3x² + 5x − 7)

Distribute:

3x² (2x − 5) + 5x (2x − 5) − 7 (2x − 5)

Distribute again:

6x³ − 15x² + 10x² − 25x − 14x + 35

Combine like terms:

6x³ − 5x² − 39x + 35

5x − 2 is the opposite of 2x − 5, so you would get the negative of the answer from part (a).

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A neighborhood playground has an area of 3,025 square feet. Which is this area expressed in scientific notation?
Viefleur [7K]

Answer:

3.025 x 10³ sq ft

Step-by-step explanation:

4 0
3 years ago
Find the solutions to (x, y) y = -0.5x + 2 y = 0.5x + 6​
Marat540 [252]

Answer:

y=-0.5x+2 (-4,0) (0,2)   y=0.5x+6 (0,6)(12,0)

Step-by-step explanation:

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3 0
3 years ago
After 22 weeks of training, Amanda learned a total of 55 appetizer recipes. After 6 weeks of training, she will learn
Artist 52 [7]

Answer: 15

Step-by-step explanation:

My answer is correct because, if in 22 weeks she learned 55 recipes of appetizers, the we have to divide 55 by 22. And 55 divided by 22  equals 2.5. So now since we have that and they are asking us what would it be for a total of 6 weeks then we just have to multiply 2.5 and 6. And 2.5 times 6 equals 15.

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6 0
3 years ago
X - 6y = 4 and 3.x – 18<br> How many solutions
Kobotan [32]

Answer:

None

Step-by-step explanation:

5 0
3 years ago
the sides of a triangle are in the ratio 3:4:5 what is the length of each side if the perimeter of the triangle is 90cm
avanturin [10]
P of triangle = a + b = c = 90

<span>ratio 3:4:5
so a = 3x, b = 4x , c = 5x

3x + 4x + 5x = 90
12x = 90
x = 90/12 = 7.5

a = 3x = 3 * 7.5 = 22.5
b = 4x = 4 * 7.5 = 30
c = 5x = 5 * 7.5 = 37.5

Answer:
1st side = 22.5
2nd side = 30
3rd side = 37.5

Double check: 22.5 + 30 + 37.5 = 90 (perimeter)</span>
6 0
3 years ago
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