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
schepotkina [342]
3 years ago
15

Please help........there are 3 problems

Mathematics
1 answer:
Harman [31]3 years ago
7 0
1.\ x^2+5x+4=x^2+x+4x+4=x(x+1)+4(x+1)=(x+1)(x+4)\\\\2.\ x^2-10x+21=x^2-7x-3x+21=x(x-7)-3(x-7)=(x-7)(x-3)\\\\3.\ x^2+2x-63=x^2+9x-7x-63=x(x+9)-7(x+9)=(x+9)(x-7)
if
x^2+10x+21
then
=x^2+7x+3x+21=x(x+7)+3(x+7)=(x+7)(x+3)
You might be interested in
Nani needs to buy 8 cups of fresh pineapple for a fruit cocktail. The table shows the unit prices (per cup) of pineapple at diff
notka56 [123]

Answer:

She could purchase from stores A, D and E.

Step-by-step explanation:

She needs 8 cups so I multiplied each price by 8;

Store A 0.49(8)=$3.92

Store B 0.51(8)=$4.08

Store C 0.55(8)=$4.40

Store D 0.48(8)=$3.84

Store E 0.45(8)=$3.60

8 0
3 years ago
Read 3 more answers
The following graph shows Barry's monthly phone bill and the number of minutes used. About how many minutes did Barry consume if
hram777 [196]

Answer:

About 27.5 minutes

Step-by-step explanation:

When looking at the graph, you can see that the red line intersects about 27.5 minutes with $55.

6 0
3 years ago
How many full glasses of water will be needed to fill the jug ? Jug= 2.8 litres, Cup= 200ml​
igomit [66]

Answer:

14 cups

Step-by-step explanation:

1 l = 1000ml

to filled the jug we need 2.8 litres

2.8 l to ml

2.8 × 1000

= 2800ml

how many cup would give us 2800ml

2800 ÷ 200

=14 cups

3 0
3 years ago
There are 84 new houses being built in a neighborhood. Last month, 1/3 of them were sold. This month, 5/7 of the remaining house
noname [10]
There are a total of 16 houses left
4 0
3 years ago
PLEASE HELP ME!!! ANSWER BOTH QUESTIONS & I WILL MARK BRAINLIEST!!!
Nataly [62]
1)b
2)a
Let me know if u want me to show my work
5 0
3 years ago
Other questions:
  • Which expression converts 100 inches per minute to feet per minute?
    9·1 answer
  • $5000 principal earning 5% compound annually after 4 years
    5·2 answers
  • HELP!!! PLZ !!!!!!!!!
    6·2 answers
  • 8 added to 7 and x cubed
    12·1 answer
  • The domain for f(x) is all real numbers greater than or equal to ___ ?
    9·2 answers
  • a flower bed has the shape of a rectangle 24 feet long and 9 feet wide what is its area in square yards
    7·1 answer
  • Help please?????????
    9·1 answer
  • Is every relation also a function? Explain. No. A relation is a special type of function where each input maps to exactly one ou
    7·1 answer
  • Asma was asked to compare the following two numbers.
    13·2 answers
  • Solve for x and round to nearest tenth for both please and Thankyou:)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!