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
Usimov [2.4K]
3 years ago
9

what number should be added to the expression x^2 + 10x to change it into a perfect square trinomial?​

Mathematics
2 answers:
Tamiku [17]3 years ago
6 0

Answer:

25

Step-by-step explanation:

In case anyone was confused the answer is 25. took the test.

Annette [7]3 years ago
3 0

Answer:

\large\boxed{5^2=25}

Step-by-step explanation:

\text{Perfect square:}\ (a+b)^2=a^2+2ab+b^2\\\\x^2+10x\\\Downarrow\\x^2+2(x)(5)\\\Downarrow\\x^2+2(x)(5)+5^2=(x+5)^2

You might be interested in
Click on the photo to get a better view, I really don’t understand it
zaharov [31]

Answer:

1)107

2)43

Step-by-step explanation:

Triangles interior angles add up to 180 degrees. In the first one, the first two angles are 31and 42, and if interior angles add up to 180, the equation should be 31+42+x=180 x=107.

Second one is hardes. A square means a right angle, or 90 degrees. 180-90 is 90. Next, we have the two angles x, and x+4 We know that triangles interior angles add up to 180 degrees, so x+x+4+90=180 2x+94=180 2x=86 x=43

Hope this helps :D Please mark brainliest if correct :D

3 0
3 years ago
What is this fraction
pantera1 [17]

Answer:

1/4

Step-by-step explanation:

3/12 simplified is 1/4.

Happy to help!

3 0
3 years ago
Read 2 more answers
10% of what number is 11
kari74 [83]
You multiply 11 and 10 which gives you 110%. So 10% of 110 gives you 11 .Hope i helped:)
8 0
3 years ago
Monica pay sales tax of $1. 50 Cent when she bought a new bike helmet. If the sales tax rate was 5% how much did the stores char
MaRussiya [10]

Answer: $30 charge for the helmet before tax

Step-by-step explanation:

Let P the pre-tax subtotal

Sales tax = P·5/100

Since we know the sales tax paid, we can substitute its value here:

P·5/100 = $1.50

P = $1.50·100/5 = $150/5 = $30 , charge for the helmet before tax

Answer: $30 charge for the helmet before tax

<h2><em>Spymore</em></h2>
8 0
3 years ago
What is the reciprocal of 12 is
Rudiy27

Answer:

1/12

Step-by-step explanation:

The reciprocal of any given x is 1/x. That makes the reciprocal of 12, 1/12.

8 0
3 years ago
Read 2 more answers
Other questions:
  • WILL GIVE BRAINLEIST IF RIGHHT Determine whether the given lengths can be sides of a right triangle. Which of the following are
    13·1 answer
  • What is surface area of cube if the only number is 5
    10·2 answers
  • Please help what is m+6 = 20
    15·1 answer
  • What is the approximate area of a circle with a diameter of 14 inches
    7·2 answers
  • Which situation can be modeled by the expression-12 x 1/3?
    12·1 answer
  • If I charged 30$ a hair cut the whole year how many times would each customer have to come in to get 17,510$
    5·1 answer
  • Please help me out with this!
    10·1 answer
  • Find the slope of the line through each pair of points.<br> (2,-2),(4,2)
    13·1 answer
  • Find the slope for<br> 6y-10x=30
    15·2 answers
  • Solve for x and graph the solution on the number line below.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!