1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Effectus [21]
3 years ago
15

R^2+15r+56=0 Quadratics factoring

Mathematics
1 answer:
mylen [45]3 years ago
6 0

Step-by-step explanation:

Find the product, sum and factors which are P=56, S=15 and F=8,7 respectively.

r²+15r+56=0

replacing with the factors in the equation

=> r²+8r+7r+56=0

r(r+8)+7(r+8)=0

(r+8)(r+7)=0

=> r= –8 and –7

You might be interested in
HELP Me PLEASE BUT I JUST NEED THE ANSWER AND I hAVE 35MORE QUESTINS
iren [92.7K]
<h2>Answer:</h2>

<u>The length is</u><u> 12 feet</u>

<h2>Step-by-step explanation:</h2>

The width of the garden is 5 feet

After that the total edging is telling us the area

We know that

<h3>Area of rectangle = length x width</h3>

So

60 = length x 5

Length = 60 / 5

Length = 12 feet

6 0
3 years ago
R varies inversely as v2 if r=120 when v=1 ,find r when v=10
makvit [3.9K]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ r = k/v^2

Substitute the values in:

120 = k/1^2

Multiply both sides by 1^2 to find k

k = 120

Substitute new values in:

r = 120/10^2

Solve:

r = 1.2

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

6 0
3 years ago
Find the unit rate.<br> 180 miles in 3 hours<br> The unit rate is<br> miles per hour.<br> Pls hurry
Natali [406]

Answer:

60 miles per hour

Step-by-step explanation:

Consider the structure of the wording: "miles per hour"

The word "per" means for each. There is you clue.

Each is, one of and one of is unit measurement

So the controlling element in this question is that you need to convert the 3 hours into 1 hour.

Using ratio properties

180

3

=

x

miles

1

hour

We need to 'force' the left hand side into the same form as the right. That is: we need to convert the denominator into 1 and see what happens to the numerator.

⇒

180

÷

3

3

÷

3

=

x

1

⇒

60

1

=

x

1

So the unit rate of speed is  

60

miles  

per

−−−  

hour

4 0
2 years ago
Identify the like terms and terms <br> 1.4c + 11.4 - 2c - 7.3c =
Pavel [41]
Like terms:
1.4c, -2c, -7.3c
11.4 has no like terms


3 0
3 years ago
The number 1,254 is divisible by all of the following, except _____.<br><br> 6<br> 2<br> 3<br> 9
Orlov [11]

Answer:

The number 1,254 is divisible by all of the following, except 9

4 0
3 years ago
Other questions:
  • How is the decimal 2.4 written as a mixed number in its simplest form
    14·1 answer
  • Ronald states that the numbers 1/11 is not rational but Nathaniel says it is rational which boy is correct and why
    5·1 answer
  • A recipe calls for 1212 cups of blueberries to make 77 jars of blueberry jam. What is true about the number of cups of blueberri
    12·2 answers
  • What is the number 153 split in half
    6·2 answers
  • NEED HELP QUCKILY PLZ HURRY
    9·2 answers
  • In this cube, each small square has side length 1 unit.
    13·1 answer
  • a kitchen is shaped like a rectangle with dimensions of 4ft by 7ft. The floor of the rooms is made up of square tiles with a sid
    13·1 answer
  • Dao receives an employee discount on the purchase of a new automobile. The automobile that he is interested in has a sticker pri
    7·2 answers
  • 2. The coordinate grid shows triangle RST. (x, y) - 0,-) S R. ✓ O (x,y) - (x, y) O (x,y) - (-y, x) O (x,y) - (-x, y) CLEAR ALL T
    12·2 answers
  • A runner covers the last straight stretch of a race in 3 s. During that time, he speeds up from 5 m/s to 11 m/s.What is the runn
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!