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dexar [7]
3 years ago
5

Factor the expression. 21x^2 + 43x + 20

Mathematics
2 answers:
liq [111]3 years ago
6 0
Hello,

21x^2 + 43x + 20\\
=21x^2+28x+15x+20\\
=7x(3x+4)+5(3x+4)\\
=(3x+4)(7x+5)\\

Answer B
krok68 [10]3 years ago
3 0
Each choice has 7x and 3x which multiply to 21x^2.
The original trinomial has positive 20 and positive 43, so all factors of 21 and of 20 must be positive.
Only choice B has all positive terms, so choice B must be the answer.
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Please help with the two questions above! I will give brainliest to the correct answers. Thanks!
aksik [14]

Answer:

In both the above questions, correct option is (D).

#$# THANK YOU #$#

5 0
3 years ago
Ike Phillips worked 6.7 hours at time-and-a-half pay and 3.4
ikadub [295]

Working out the different pay rates earned by Ike Phillips :

  • Time and half pay rate = $17.055
  • Double pay rate = $22.74
  • Time and half earning = $114.2685
  • Double rate earning = $77.316
  • Gross earning = $646.3845

Let :

Regular rate = $11.37

Total earning for the week = $454.80

Double pay hours = 3.4

Time and half pay hours = 6.7

  • Time and half pay rate = 1.5 × regular pay rate = 1.5 × 11.37 = $17.055

  • Double pay rate = 2 × regular pay rate = 2 × 11.37 = $22.74

  • Time and half earning = rate × time = $17.055 × 6.7 = $114.2685

  • Double rate earning = rate × time = $22.74 × 3.4 = $77.316

  • Gross earning = (regular + time and half + double earning) = $(454.80+114.2685+77.316) = $646.3845

Therefore, Ike's gross earning for the week is $646.3845

Learn more : brainly.com/question/24635246

4 0
3 years ago
Mr. Nelson sold 14 bags of popcorn and 21 bottles of water in today. At this rate, how many more bottles of water than bags of p
e-lub [12.9K]

Answer:

He will sell 70 bags of popcorn and 105 bottles

Step-by-step explanation:

In 1 day he sells 14 bags of popcorn and 21 bottles

Multiply 14 by 5 which is 70

then multiply the bottles which is 21 by 5 days

105

He will sell 70 bags of popcorn and 105 bottles

6 0
2 years ago
Read 2 more answers
3 times what equals 14
ad-work [718]
4.67, it’s a repeating decimal
7 0
3 years ago
Read 2 more answers
What is the slope of the line that passing through (-2, 4) and the origin.
S_A_V [24]

Answer:

slope= -2

Step-by-step explanation:

using \frac{y2-y1}{x2-x1} you plug in the values of (-2,4) and (0,0)

=\frac{0-4}{0-(-2)}

=\frac{-4}{2}

= -2

8 0
3 years ago
Read 2 more answers
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