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adell [148]
4 years ago
15

Giovanni justifies whether the expression –4x – 8 is equivalent to Negative 2 (x + 1) minus 2 (x + 3) by letting x = 3 in both e

xpressions. What is the value of each expression when x = 3? 3 and –20 4 and 4 –20 and –20 3 and 4
Mathematics
2 answers:
Vladimir [108]4 years ago
6 0

Answer:

When x = 3, the solutions to the expressions are–20 and –20

Step-by-step explanation:

–4(3) – 8   Multiply

-12 - 8       Subtract

-20

-2(3 + 1) - 2(3 + 3)     Simplify in the parentheses

-2(4) - 2(6)                 Multiply

-8 - 12                        Subtract

-20

               

shutvik [7]4 years ago
4 0

Answer:

its C -20 and -20

Step-by-step explanation:

just did the quiz got 100%

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The base of a parallelogram is 12 cm . it's height is 18cm. find its area​
Shalnov [3]

Area of a parallelogram = b*h (base*height)

b= 12cm

h= 18cm

Therefore:

= 12*18 cm

Area of the parallelogram = <u><em>216cm</em></u>

7 0
2 years ago
While your family is visiting deep creek lake you and your mother decide to go boating. The Rangers charge $6.50 per hour in add
Fynjy0 [20]

Answer:

The Linear equation is Total \ Cost = 25+6.5h

The Total Cost to rent canoe is $44.5.

Step-by-step explanation:

Given:

deposit to rent a canoe = $25.00

Hourly charge for visiting deep creek lake = $6.50 per hour

we need to rent the canoe from 12:30 to 3:30 PM.

We need to find the total cost to rent the canoe.

Now Total number of hours (h) 12:30 to 3:30 PM = 3 hours

Hence Total Cost  will be equal to deposit to rent a canoe plus Hourly charge for visiting deep creek lake multiplied by number of hours to visit.

Hence framing in equation form we get;

Total Cost to rent canoe = 25+6.5\times h

hence the Linear equation is Total \ Cost = 25+6.5h

Solving the equation we get;

Total Cost = 25+6.5\times3 =25 +19.5 = \$44.5

Hence the Total Cost to rent canoe is $44.5.

6 0
3 years ago
Use scientific notation to find the product of 20.5 × 10 7 and 0.000036. 73.8 × 10 2
earnstyle [38]
Well its an difficult because I need to get more <em>information</em>
5 0
3 years ago
7^2+7^7 answer in exponential form
Helen [10]
It could also be 8.23592 x 10 ^ 5

5 0
3 years ago
How many solutions does the system have?
Mrac [35]

Answer:

A Exactly one solution

Step-by-step explanation:

\left \{ {{6x-3y=9} \atop {6x+y=9}} \right.\\\\\left \{ {{6x-3y=9} \atop {-6x-y=-9}} \right\\\\Then, \\\\-4y=0\\\\\\ y=0\\\\

Putting y=0 at second equation, we have

-6x=-9\\\\x=\frac{9}{6} =\frac{3}{2}

The unique solution is (\frac{3}{2} , 0)

3 0
3 years ago
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