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ANTONII [103]
4 years ago
9

7x² + 6x - 1 Algebra 3|factoring

Mathematics
1 answer:
GaryK [48]4 years ago
5 0

Answer:

(7 x - 1) (x + 1)

Step-by-step explanation:

Factor the following:

7 x^2 + 6 x - 1

Factor the quadratic 7 x^2 + 6 x - 1. The coefficient of x^2 is 7 and the constant term is -1. The product of 7 and -1 is -7. The factors of -7 which sum to 6 are -1 and 7. So 7 x^2 + 6 x - 1 = 7 x^2 + 7 x - x - 1 = (7 x - 1) + x (7 x - 1):

(7 x - 1) + x (7 x - 1)

Factor 7 x - 1 from (7 x - 1) + x (7 x - 1):

Answer: (7 x - 1) (x + 1)

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This year, for the spring musical, the Drama Club sold 150% of the number of tickets they sold last year. Last year, the club so
babunello [35]

Answer:

C. 342

Step-by-step explanation:

This year, 150% of last year's tickets were sold.

Last year, 228 tickets were sold.

150% as a fraction is 150/100

To find the amount of tickets sold this year, we take the 150/100 and multiply it by 228:

150/100*228= 342 tickets

7 0
3 years ago
Which number is closest to √18
Mars2501 [29]

Answer:

4.2 or 4

Step-by-step explanation:

√18 = 4.24264068712

or 4.2

or 4

8 0
3 years ago
*Please help ASAP*
dalvyx [7]

Answer:

12 dimes and 36 nickels

Step-by-step explanation:

Let number of dimes be x. Since the number of nickles is three times the number of dimes, the number of nickels is 3x. There are a total of 48 coins, so number of nickels + number of dimes = 3x + x = 4x = 48 -> x =12. So she has 12 dimes and 3(12) = 36 nickels.

I hope this helps!

7 0
3 years ago
On our math test, I made two complementary angles; one of the angles is 26 ̊more than the other. Identify the angles.
iogann1982 [59]
So,

Let x represent the first angle and y represent the second angle.

x + y = 90
x = y + 26

Substitute
y + 26 + y = 90

Collect Like Terms
2y + 26 = 90

Subtract 26 from both sides
2y = 64

Divide both sides by 2
y = 32

Substitute
x = 32 + 26
x = 58

Check
58 + 32 = 90
90 = 90 This checks.

58 = 32 + 26
58 = 58 This also checks.

The measure of one angle is 58° and the measure of the other angle is 32°.
6 0
3 years ago
Write an equation of the line that passes through (-1,3) and is parallel to the line y=2x+2
posledela

Answer:

<em>y = 2x + 5 </em>

Step-by-step explanation:

y - 3 = 2( x + 1 )

<em>y = 2x + 5</em>

6 0
3 years ago
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