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3 years ago

What is the value of x in the equation 2(x-3)+9=3(x+1)+x? O x=-3 x X=-1 x = 0 x=3

Mathematics

2 answers:

NeX [460]3 years ago

7 0

Answer:

x=0

Step-by-step explanation:

Debora [2.8K]3 years ago

5 0

Answer:900000

Step-by-step explanation:

Use a calculator

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The stopping distance of a car is modeled by the function d = 0.05r(r + 2) where d is the stopping distance of the car measured

adell [148]

Answer:

The car was moving approximately at a speed of 37.74 miles per hour.

Step-by-step explanation:

We are given the following in the question:

The stopping distance of a car is given by

$d = 0.05r(r + 2)$

where d is the stopping distance in feet and r is speed of the car in miles per hour.

The stopping distance is 75 feet, we have to find the speed of the car,

Putting d = 75 in the equation, we get,

$75 = 0.05r(r + 2)\\r^2 + 2r = 1500\\r^2 + 2r-1500 = 0\\\\r =\dfrac{-2\pm \sqrt{4-(4)(1)(-1500)}}{2}\\\\r\approx -39.74,37.74$

Thus, the car was moving approximately at a speed of 37.74 miles per hour.

3 0

3 years ago

The area of a rectangle is 35 ft squared , and the length of the rectangle is 3 ft more than twice the width. find the dimension

andrey2020 [161]

Are there any answer choices

7 0

3 years ago

Here is a table of values for y = f(x).

DanielleElmas [232]

the complete question in the attached figure

statements

case A) f(15)=8-----> is correct

for x=15

f(x)=8

case B) the domain of f(x) is the set {5,6,7,8,10,11,12,13}--> is not correct

because the domain of f(x) is the set {0,5,10,15,20,25,30,35,40}

case C) f(5)=6-----> is correct

for x=5

f(x)=6

case D) the range for f(x) is all real numbers----> is not correct

because

the range of f(x) is the set {5,6,7,8,9,10,11,12,13}

the answer is

A and C

7 0

3 years ago

1.Given the function h(t) = t³ - 2t, find h(-5).

Svetllana [295]

Answer:

-65

Step-by-step explanation:

h(t) = (-5)^3 -2(-5)

h(t) = -75 +10

h(t) = -65

7 0

2 years ago

-2x + 3y = 1

Andre45 [30]

Answer:

-2x+3y =1.......(1)

y=3x-9........(2)

Now,

putting the value of y in equation (1),

-2x+3(3x-9)=1

or,-2x+9x-27=1

or,7x-27=1

or,7x=28

x= 4

Now putting the value of X in equation (2),

y=3×4-9

= 12-9

(x,y)=(4,3)

6 0

3 years ago