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2 years ago

Please can anyone help me

Mathematics

2 answers:

Grace [21]2 years ago

4 0

Yes that person is right -19 ^^^

olchik [2.2K]2 years ago

3 0

Answer:

I believe that is it -19.

Step-by-step explanation:

f(8) = -2x - 3

-2 times 8 equals to -16 minus 3 equals to -19.

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Help pleasseeeee ! 15 points the answers are (-1,-5) (0,-3) (4,5) (9,15)

svet-max [94.6K]

Answer:

(0,-3)

Step-by-step explanation:

2x-y = 3

x+2y = -6

Multiply the first equation by 2 so we can eliminate y

2(2x-y =3)

4x -2y = 6

Add this to the second equation

4x -2y = 6

x+2y = -6

-----------------

5x +0y = 0

x = 0

Now find t

x+2y = -6

0+2y = -6

2y =-6

Divide by 2

y = -3

5 0

3 years ago

Read 2 more answers

A standard doorway measures 6 feet 8 inches by 3 feet. What is the largest dimension that will fit through the doorway without b

nikdorinn [45]

Answer:

87.73 inches

Step-by-step explanation:

We are given that the dimensions of the rectangular doorway are,

Length = 6 ft 8 inches = 80 inches and Width = 3 feet = 36 inches.

Using Pythagoras Theorem, we will find the diagonal of the rectangular doorway.

i.e. $hypotenuse^{2}=length^{2}+width^{2}$

i.e. $hypotenuse^{2}=80^{2}+36^{2}$

i.e. $hypotenuse^{2}=6400+1296$

i.e. $hypotenuse^{2}=7696$

i.e. Hypotenuse = ±87.73 inches

Since, the length cannot be negative.

So, the length of the diagonal is 87.73 inches.

As, the largest side of a rectangle is represented by the diagonal.

So, the largest dimension that will fit through the doorway without bending is 87.73 inches.

7 0

3 years ago

Please help I am really confused with this

mario62 [17]

The answer should be A. 4 Meters

5 0

2 years ago

when you sign up for video games are you get 400 points you earn 50 more points for each hour that you play how many hours do yo

aleksandr82 [10.1K]

This is a linear equation
y=mx+b
y=50x+400 (when x equals the number of hours played)

1000=50x+400
*first, isolate the variable (x)
-50x=-1000+400
*divide by -50 to get x by itself
x=20+8

The answer is x=28

4 0

3 years ago

Read 2 more answers

A side of the triangle below has been extended to form an exterior angle of 159º. Find the value of x.

xenn [34]

Answer:

x = 69

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles in a triangle

x+90 = 159

Subtract 90 from each side

x +90-90 = 159-90

x =69

5 0

3 years ago

Read 2 more answers

Please can anyone help me ​

Please can anyone help me