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3 years ago

Which algebraic expression is equivalent to the expression below?

1 answer:

4 0

Let's simplify step-by-step.5(4x+3)+5(9−x)Distribute:=(5)(4x)+(5)(3)+(5)(9)+(5)(−x)=20x+15+45+−5xCombine Like Terms:=20x+15+45+−5x=(20x+−5x)+(15+45)=15x+60

Answer is B

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Determine the maximum number of zeros and the x-intercepts of the function: (x^2-x-2)(3x-2)

schepotkina [342]

Answer:

Step-by-step explanation:

note that zeros and x-intercepts are the same with different names

There are 2 zeros from the quadratic factor and 1 from the linear factor.

To find them equate the function to zero, that is

(x² - x - 2)(3x - 2) = 0

(x - 2)(x + 1)(3x-2) = 0 ← factoring the quadratic

equate each factor to zero and solve for x

x - 2 = 0 ⇒ x = 2

x + 1 = 0 ⇒ x = - 1

3x - 2 = 0 ⇒ x = $\frac{2}{3}$

4 0

3 years ago

What is the volume of a cube with a side length of 5 cm? help asap

uranmaximum [27]

V = a * b * c
a,b,c- lengths of sides
in here a=b=c=5cm
V=5*5*5 = 125 cm^3

or
V=a^3 = 5^3 =125 cm^3

6 0

3 years ago

9-(6x+1)=3x+8 what is it thank you

Jobisdone [24]

Answer:

0=x

Step-by-step explanation:

9-(6x+1)=3x+8

9-6x-1=3x+8

9-8-1=3x+6x

9-9=9x

0=9x

0÷9=x

0=x

5 0

3 years ago

Change 21/4 to a mixed number

8090 [49]

Answer:

$5\frac{1}{4}$

Step-by-step explanation:

Greatest multiplier of 4 that is less than 21 is 5 (4 x 5 = 20)

Put the remaining number as the numerator (21 - 20 = 1)

3 0

3 years ago

Math

Snezhnost [94]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

Here's the solution ~

$\qquad \sf \dashrightarrow \: 7.2 + (2x + 0.4)$

$\qquad \sf \dashrightarrow \: 7.2 + 2x + 0.4$

$\qquad \sf \dashrightarrow \: 7.2 +0.4 + 2x$

$\qquad \sf \dashrightarrow \: (7.2 +0.4) + 2x$

Therefore, the correct choice is A

3 0

2 years ago

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