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koban [17]
3 years ago
11

Which expression is equivalent to (3a + 7) (2a – 5)?

Mathematics
1 answer:
Nostrana [21]3 years ago
5 0

Answer:

6a^2-a-35

Step-by-step explanation:

(3a + 7) (2a – 5)

F: 6a^2

O: -15a

I: 14a

L: -35

combine like terms

6a^2-a-35

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The simplest form of the expression -2x2(x – 5) + x(2x2 – 10x) + x is
Bad White [126]
For this case you must simplify the expression respecting the rules of multiplication of mathematics.
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4 0
3 years ago
Read 2 more answers
find the equation of a line that is parallel to the straight line 2x-y=-3 and crosses the x-axis at x=-5​
Alecsey [184]

Answer:

y=2x+10

Step-by-step explanation:

In line equations its helpful to write your line in the form y = ax + b. This helps because a is always the gadient of the line and b is always the y intercept.

In this case it is y=2x+3

All parallel lines have the same gradient. The gradient of this line = 2.

If the line crosses the x axis at x=-5, then when x =-5 y = 0.

If you put all this in the form y =ax + b you get 0 = 2(-5) +b

So all you need to do to find b is rearrange. b = 10.

Therefore your line has gradient 2 and y intercept 10.

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7 0
3 years ago
What is the average of the following numbers: 18, 64, 23, 78, 82, 91
Katen [24]
To Find The Answer, We Need To Add All Of Them Together, Then Divide By the Number Of Values. So:
64+23+78+82+91
-----------------------
             5

<span>64+23+78+82+91 = 338.
</span>
338
-----
  5

338/5 = 67.6

So, The Average Is 67.6
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3 years ago
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Y_Kistochka [10]
3%?? The question doesn't make much sense.
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3 years ago
What is 7 x 10^22 in its expanded form?
sammy [17]

Answer:

70,000,000,000,000,000,000,000

Step-by-step explanation:

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3 years ago
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