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Akimi4 [234]
4 years ago
8

Given f(x) = 10 - 2x, find f(7).

Mathematics
1 answer:
Dmitry_Shevchenko [17]4 years ago
7 0

Answer:

-4

Step-by-step explanation:

f(x) = 10 - 2x,

Let x= 7

f(7) = 10 2(7)

     = 10-14

      = -4

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3 3/4+ (-4 1/3)<br> Simplify
IgorC [24]

Answer:

-7/12 in decimal form it would be -0.583

Step-by-step explanation:

convert the mixed number to an improper fraction

(when there's a + in front of an expression in parentheses the expression remains the same)

15/4+(-4 1/3)

convert the mixed number to an improper fraction

15/4-13/3

subtract the fractions to get -7/12

4 0
3 years ago
Your paint 1/3 of a wall in 1/4 hour. at this rate, how long will it take to paint one wall
Irina-Kira [14]

1/4 hour is the same as 15 minutes. If it takes 15 minutes to paint 1/3, then it would take 45 minutes to paint the whole wall.

8 0
3 years ago
The cost of renting a sailboat at a lake is $20 per hour plus $14 for lifejackets. Write an equation in slope-intercept form tha
aalyn [17]

Answer:

y=20x+14, where:

y is the total amount you would pay for using the sailboat

x is the number of hours the sailboat is used

Step-by-step explanation:

An equation in slope-intercept form is set up as y=mx+b. From the information provided, the equation would indicate that the cost of renting the boat would be equal to the price per hour for the number of hours plus the cost of lifejackets and the equation in slope-intercept form that can be used is:

y=20x+14, where:

y is the total amount you would pay for using the sailboat

x is the number of hours the sailboat is used

8 0
3 years ago
PLEASE HELP MEEEEEEEE AND THANKS
VashaNatasha [74]

Answer:

See below

Step-by-step explanation:

Use 5 for "x" or "a number" and see if the inequality is true.

a) =3 < 5+11 < 2 . . . . false. 16 is not less than 2

b) 7·5 ≥ 35 or 4·5 < -12 . . . . true. 35 = 35

c) -7 + 2·5  = 3 is at most 2 . . . . false. 3 > 2

d) 5·5 +3 = 28 is between 2 and 30 . . . . true.

3 0
4 years ago
Find the slope between the pair of points (1,3) and (7,2)
agasfer [191]

Answer:

             \bold{m=-\dfrac16}

Step-by-step explanation:

\bold{slope\, (m)=\dfrac{change\ in\ Y}{change\ in\ X}=\dfrac{y_2-y_1}{x_2-x_1}}

(1, 3)    ⇒   x₁ = 1,  y₁ = 3

(7, 2)    ⇒   x₂ = 7,  y₂ = 2

So the slope:

                    \bold{m=\dfrac{2-3}{7-1}=\dfrac{-1}6=-\dfrac16}

5 0
3 years ago
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