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2 years ago

F(x) = 3x + 2 What is f(5)? A. 15 B. 17 C. 21 D. 10

Mathematics

1 answer:

olchik [2.2K]2 years ago

8 0

It B. You enter 5 instead of x and calculate.

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If the sum of a number and three is doubled?, the result is seven less than the number. Find the number

pentagon [3]

(x+3)*2=x-7
2x+6=x-7
x=-13

6 0

2 years ago

Please help me complete this !! 12points

Svet_ta [14]

Answer:

x1=1

x2=3

y1=5

y2=1

midpoint= (x1+x2/2, y1+y2/2)=(1+3/2,5+1/2)=(2,3)

x1=2

x2=4

y1=4

y2=6

midpoint= (x1+x2/2, y1+y2/2)=(2+4/2,4+6/2)=(3,5)

x1= -2

x2=4

y1=4

y2= -6

midpoint= (x1+x2/2, y1+y2/2)=(-2+4/2,4-6/2)=(1,-1)

x1=0

x2=0

y1=3

y2=5

midpoint= (x1+x2/2, y1+y2/2)=(0/2,3+5/2)=(0,4)

x1= -2

x2=2

y1= -6

y2=6

midpoint= (x1+x2/2, y1+y2/2)=(-2+2/2,-6+6/2)=(0,0)

x1=1

x2=4

y1=4

y2=5

midpoint= (x1+x2/2, y1+y2/2)=(1+4/2,4+5/2)=(5/2,9/2)

x1=-3

x2=-4

y1=5

y2=5

midpoint= (x1+x2/2, y1+y2/2)=(-3-4/2,5+5/2)=(-7/2,5)

x1=5

x2= -4

y1=2

y2=6

midpoint= (x1+x2/2, y1+y2/2)=(5-4/2,2+6/2)=(1/2,4)

3 0

2 years ago

Simplify the expression and show work 4(3x-2)-7(x+5)

Gennadij [26K]

Answer:

5x - 43

Explanation:

Given the below expression;

$4\left(3x-2\right)-7\left(x+5\right)$

To simplify the above, we'll go ahead and use the numbers outside the parentheses to multiply the ones inside to clear the parentheses as seen below;

$\begin{gathered} 12x-8-7x-35 \\ =12x-7x-8-35 \\ =5x-43 \end{gathered}$

So the answer is 5x - 43

7 0

8 months ago

What is the selling price of an item if the original cost is $784.50 and the markup on the item is 6.5 percent?

JulijaS [17]

Answer:

Solution:

Given, cost price = $784.50

Profit = 6.5% of cost price

= 6.5/100 × $784.50

= $50.9925 [since, profit% is always on C.P.]

And selling price = cost price + profit

= $784.50 + $50.9925

= $835.4925

Hence, selling price = $835.4925

5 0

2 years ago

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Two cars raced at a race track. The faster car traveled 20 mph faster than the slower car. In the time that the slower car trave

kakasveta [241]

Answer:

pano yan paturo

Step-by-step explanation:

hinde ko alam

8 0

3 years ago