Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?​

Answers

Answer 1

Answer:

a=9 , b=14

Step-by-step explanation:

Just do the operation (x+7)(x+2)

x(x)+x(2)+7(x)+7(2)

x^2+2x+7x+14

x^2+9x+14

So a=9 and b=14


Related Questions

Need to know now!
How do you solve “at this rate...”

Answers

Answer: you do the length times width

Step-by-step explanation:

Answer:

"At this rate" for me usually will be some sort of dividing

Evaluate -41-41.=
-8
08
16
-16

Answers

Answer:

are you sure those are all the options because it is -82

Step-by-step explanation:

The answer is -82 though.

help me pls i don't know

Answers

Answer: so the a is 4 and the b is 3

that means you have to write 6+1+1 and that equals 8.

your answer is 8

Step-by-step explanation:  in order to get that you have to replace a with 4 and b with 3, if you do you will see that they are simplified to 1. so if you add that the answer is 8. i hope this helped.

Alexandra's drafting class is building a scale model of the school's courtyard. Alexandra chose to make a model of a campus oak tree for the assignment as shown. The tree is 10 yards tall and the base of the tree is 5 yards away from the edge of a park bench. She calculated that her oak tree model should be 0.4 yards tall. What is the distance, in yards, from the base of the model tree to the edge of the model bench?

Answers

Answer:

It's 0.20

Step-by-step explanation:

The distance between the base of the model tree to the edge of the model bench is  0.2 yard.

Similar triangle :

A diagram is attached which describe the statement of question.

From diagram attached below, It is observed that both triangles are similar triangles.

The ratio of corresponding sides are same in the similar triangles.

the distance between the base of the model tree to the edge of the model bench is  x.

                     [tex]\frac{5}{x}=\frac{10}{0.4}\\ \\ 10x=2\\\\x=2/10=0.2yard[/tex]                

Learn more about the similar triangles here:

https://brainly.com/question/14285697

answers ASAP plsssssss

Answers

Answer:

Step-by-step explanation:the answer is option A as 1 • 3 =3 and 3+4=7

Find angles a, b and c?
Please help.

Answers

Answer:

B=112 degrees A=68 degrees and C=68 degrees

Step-by-step explanation:

the opposite angle of the 112-degree angle is the angle on the top left of the page, this means both of the angles are the same. You can then tell that that angle is the same as the one across from it because it shows on the page.  You can then figure out the opposite angle which is B so that means angle B is equal to 112 degrees. To figure out angle A you can just do 180 minus the angle B which is 112 degrees. You now know angle A which is 68 degrees, now to find the angle C you just have to notise that angle C is the opposite angle of angle A. This means that algle C is also 68 degrees.

Answer:

a=112

b=68

c=112

Step-by-step explanation:

Which of the following is a common denominator of 3/4 and 1/5
a.35
b.20
c.15
d.30

Answers

Answer:

b.20

Step-by-step explanation:

brainliest please

Answer:

The answer is 20

Step-by-step explanation:

pls help me im so not smart lol

Answers

Answer:

7

Step-by-step explanation:

1 x  3=

2x3=6

4x3=12

7x3=21

Answer:

7

Step-by-step explanation:

im not that smart either but i think tis the 3s

1 x3 = 3

2 x3 = 6

4 x3 =12

7 x3 = 21

if tht makes any sense

Solve by factoring and the square root method, SHOW ALL WORK.

Answers

Answer:

Not sure

Step-by-step explanation:

The price of a loaf of a particular type of bread increased from $3.69 to $5.49 from 2009 to 2019. What was the percent increase in the price of the loaf of bread over those years? Round your answer to the nearest tenth of a percent.

Answers

Answers:

A) 51.3%

B) 55.9%

C) 32.8%

D) 48.8%

Step-by-step explanation:

Answer:

48.8%

Step-by-step explanation:

The owner of a garden center pays $12 for each birdbath. She sells them for 55% more than she paid. Decide whether each expression represents the selling price for b birdbaths.Choose Yes or No for each expression.A.12b1 1. 55(12b) u Yesu Nob. 12(0 . 45b) u Yesu Noc.12b(1. 55)u Yesu Nod. 12(0 . 55b) u Yesu Noe. 12b(1 1 0.55)u Yesu No

Answers

Answer:

[tex]Selling\ Price = 12b(1.55)[/tex]

Step-by-step explanation:

Given

[tex]Cost\ Price = \$12[/tex]

[tex]Selling\ Price = 55\%\ more[/tex]

Required

Write an expression for the selling price for b birdbaths

This selling price for 1 birdbath is calculated as:

[tex]Selling\ Price = Cost\ Price + 55\% * Cost\ Price[/tex]

Substitute 12 for Cost Price

[tex]Selling\ Price = 12 + 55\% * 12[/tex]

Factorize:

[tex]Selling\ Price = 12(1 + 55\%)[/tex]

Express percentage as decimal

[tex]Selling\ Price = 12(1 + 0.55)[/tex]

[tex]Selling\ Price = 12(1.55)[/tex]

For b birdbaths, the selling price is:

[tex]Selling\ Price = 12(1.55) * b[/tex]

[tex]Selling\ Price = 12b(1.55)[/tex]

The options are not clear; However [tex]12b(1.55)[/tex] answers the question.

Hector spent $40.75 for 2 DVDs that cost the same amount. The sales tax on his purchase was $4.15. Hector also used a coupon for $1.00 off his purchase. How much did each DVD cost?

Answers

Answer:

36.75 + 1 = 37.75 - 2.15 = 35.60/2 = 17.80

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