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Alex777 [14]
3 years ago
8

Find the sum. A. 4x2 – x – 5 B. 10x2 + 7x – 5 C. –10x2 + 7x + 11 D. 4x2 + x – 11

Mathematics
1 answer:
Kobotan [32]3 years ago
7 0

Answer:

A

Step-by-step explanation:

7x² - 4x - 8 - [ -3x² - 3x - 3]

In subtraction, flip the sign of all terms in the minuend

   7x² - 4x - 8

  <u> 3x² + 3x + 3</u>

   4x² - x - 5

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a classroom has triangular tables there is enough space at each side of a table to seat one child the tables in this class are a
Gekata [30.6K]

Answer:

15

Step-by-step explanation:

3 students can fit in one table. 5*3=15

5 0
3 years ago
Solve for p. <br><br> i = prt<br><br> p = i-rt<br> p = i/(rt)<br> p = (rt)/i
Debora [2.8K]

Answer:

<h2>p = (rt)/i</h2>

Step-by-step explanation:

i=prt\to prt=i\qquad\text{divide both sides by}\ rt\neq0\\\\\dfrac{prt}{rt}=\dfrac{i}{rt}\\\\p=\dfrac{i}{rt}

5 0
3 years ago
Is the work shown below correct? Explain your answer.
riadik2000 [5.3K]
(11 + 21) - ( 3 - 100 )
= 32 + 97
= 129

or (11+21)-(3+100)
= 32 - 103
= - 71


I have no idea about your topic but hope it's right! Good luck
8 0
3 years ago
Simplify 36x^4 42x^7
Alja [10]
The first step to simplify this equation is to multiply the numbers
1512x^{4}×x^{7}
next,, youll multiply the terms with the same base by adding their exponents
1512x^{4+7}
finally,, youll add the numbers together
1512x^{11}
since you cant simplify any further,, the correct answer to your question is 1512x^{11}
let me know if you have any further questions
:)
4 0
3 years ago
Given g(x)= -2x+2 and f(x)= 3x^2+4, find (g+f)(-3)
aliina [53]

Answer:

39

Step-by-step explanation:

g(x)= -2x+2 and f(x)= 3x^2+4

(g+f)(-3)

g(-3) = -2(-3) +2 = 6+2 =8

f(-3) = 3 (-3)^2 +4 = 3(9)+4 = 27+4 = 31

(g+f)(-3) = g(-3) + f(-3) = 8+31 = 39

3 0
4 years ago
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