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
mars1129 [50]
2 years ago
14

Find the sum of 3x² + 5x - 1 and x² - 2x -7​​

Mathematics
2 answers:
vova2212 [387]2 years ago
8 0

Answer:

4x^2+3x-8

Step-by-step explanation:

gizmo_the_mogwai [7]2 years ago
7 0

<h3>{3x}^{2}  + 5x - 1 +  {x}^{2}  - 2x - 7 \\  {3x}^{2}  +  {x}^{2}  + 5x - 2x - 1 - 7 \\  {4x}^{2}  + 3x - 8</h3>
You might be interested in
Can someone give me the answer no links I’ll give brainliest
LiRa [457]

Answer:

1,334.5 \:  {cm}^{3}

Step-by-step explanation:

Height of the cylinder h = 17 cm

Radius of the cylinder r = 5 cm

V_{cylinder}  = \pi {r}^{2} h \\  \\  = 3.14 \times  {(5)}^{2}  \times 17 \\  \\  = 3.14 \times 25 \times 17 \\  \\V_{cylinder}  = 1,334.5 \:  {cm}^{3}

3 0
2 years ago
The ratio of students who wear glasses to the total class is 2:5
Taya2010 [7]

Answer:

a. 2:3, b. 25 students, c. 3:2

Step-by-step explanation:

a. 5 (total) - 2 (with glasses) = 3 (without glasses), making the ratio 2:3.

b. We can assign the total students with the variable x. 3:5=15:x, 75=3x, x=25. 25 total students.

c. 25 (total students) - 15 (without glasses) = 10 (with glasses). (10+5):(15-5) is 15:10, which, when simplified, equals to 3:2.

4 0
2 years ago
Find m∠ABD and m∠CBD given m∠ABC = 111∘
Y_Kistochka [10]

Answer:

The is the m ∠ABC = m∠DEF the measures of the angles are equal ... Find the measure of the angle and give the reason for knowing it. ... x = __111___ ... m∠ABD = 3x + 20 and m∠BDC = x + 40 ... an equation to solve for x, and then find

AB, CD,. Hope It Helps!

7 0
3 years ago
Write the fraction as a product of a whole number and a unit fraction.<br><br> 7/8
aleksklad [387]
The unit fraction of 7/8 is 1/8
7 0
3 years ago
La diferencia entre un numero y ocho​
cupoosta [38]

Answer:

hzyuzj ahuaaia hs7w8aijw. hu7sisj. shususijs bhsusj

4 0
3 years ago
Read 2 more answers
Other questions:
  • I need to know how to do this question
    14·2 answers
  • Let f(x) =45x^2 – 2x + 1.  What is the value of f(5) · f(–10) – f(–5) · f(10)?
    7·1 answer
  • What's the answer to 4n - 9 = -9
    5·2 answers
  • linda thinks of a two digit number. the sum of the digits is 8. if she reverses the digits, the new number is 26 greater than he
    7·1 answer
  • Which of the following expressions cannot be factored?
    13·1 answer
  • If Jan had 10<br> Apples and gave 4 to him, how many apples does Jan have left?
    9·1 answer
  • Please help if i don’t pass this im screwed
    13·2 answers
  • What is 6 feet + 4 feet measured to the nearest half foot
    14·1 answer
  • Plz help me with this
    11·1 answer
  • You are choosing between two different cell phone plans. The first plan charges a rate of 26 cents per minute. The second plan c
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!