2 years ago

Which expression is equal to 5(2x^2-1)+3(7x^2+1)

Mathematics

1 answer:

vitfil [10]2 years ago

4 0

Answer:

31x² - 2

Step-by-step explanation:

5(2x²-1)+3(7x²+1) = 5*2x² - 5*1 + 3*7x² + 3 = 10x² - 5 + 21x² + 3 = 31x² - 2

You might be interested in

Write each of the following numerals in base 10. For base twelve, T and E represent the face values ten and eleven, respective

elena-s [515]

Answer:

a. 37

b. 25

c. 226

Step-by-step explanation:

Place value has the same meaning in any other number base that it has in base 10. Using expanded form is one way to do the required base conversion.

a. 122₅ = 1×5² +2×5¹ +2×5⁰

= 25 +10 +2 = 37

b. 11001₂ = 1×2⁴ +1×2³ +0×2² +0×2¹ +1×2⁰

= 16 +8 + 1 = 25

c. 16T₁₂ = 1×12² +6×12¹ +10×12⁰

= 144 +72 +10 = 226

8 0

3 years ago

HELP ME FIND THE SLOPE

Tomtit [17]

Answer:

$m=\frac{-5}{2}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Choose any 2 points from the chart.

Point (-6, 11)

Point (-2, 1)

Step 2: Find slope m

Substitute: $m=\frac{1-11}{-2+6}$
Subtract/Add: $m=\frac{-10}{4}$
Simplify: $m=\frac{-5}{2}$

4 0

2 years ago

Find the perimeter of the figure below. Notice that one side length is not given. Assume that all intersecting sides meet at rig

Setler [38]

52 ft

The missing side is 5ft because 11-6 is the remaining side length.

11+5+6+8+7+15=52

6 0

2 years ago

you need to divide up some candies for your children.There are 28 candies.each child gets 1/4 of the candies.how many does each

Lubov Fominskaja [6]

Answer:

7 each

Step-by-step explanation:

28÷4=7

1/4 of 28=7

8 0

2 years ago

Please I need help badly I also have stuff on my account

yan [13]

I think 88 I’m so sorry if I’m wrong

7 0

2 years ago