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skelet666 [1.2K]
3 years ago
9

Determine whether the given value is a solution of the equation(is this a YES or NO)

Mathematics
1 answer:
Ne4ueva [31]3 years ago
5 0
To determine if a given value is a solution of the equation, we will substitute the given value in for the variable it has been assigned to.

In this equation, our variable is k.

25 =  \frac{k}{5} ; k = 5

Substitute 5 in for k:

25 =  \frac{5}{5}

Now we will simplify the right side of the equation:

\frac{5}{5} = 1
25 = 1

25 does not equal 1, so we know that the given value 5 is not a solution for the equation.

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a rectangle has a perimeter of 22 feet. the width is 5 feet less than the length. find the length and width of the rectangle​
alexira [117]

Answer:

the length is 8ft

the width is 3ft

Step-by-step explanation:

Step one:

given

perimter= 22ft

let the length be x

width = x-5

Step two

the expression for the perimeter of a rectangle is

P=2L+2W

substituting our data

22= 2(x)+2(x-5)

open brackets

22=2x+2x-10

collect terms and solve for x

22+10=4x

32=4x

divide both sides by 4

x= 32/4

x= 8ft

the length is 8ft

the width = x-5= 8-5= 3ft

8 0
3 years ago
What is the slope of the line with the points of (100,120) (50,95)
kifflom [539]
M= 95-120 / 50-100 = -25 / -50 = 1/2 

I used the formula m= y2 - y1 / x2 - x1 
7 0
3 years ago
Thank you!!!!!!!!!!!!!!!!!!!!!
BabaBlast [244]
A expression people say to express gratitude.
6 0
3 years ago
I need help with #2 (click the attached photo to view properly)<br>I will mark Branliest​
Shtirlitz [24]

Hi there! :)

\large\boxed{j(h(x))(2) = 31}

Solve for j(h(x)):

h(x) = x² + 4

j(x) = 4x - 1

Substitute in h(x) into "x":

j(h(x)) = 4(x² + 4) - 1

j(h(x)) = 4x² + 16 - 1

j(h(x)) = 4x² + 15

Solve at x = 2:

4(2)² + 15 = 4(4) + 15 = 31.

7 0
3 years ago
Help me find surface area of this shape
lozanna [386]
The triangle <span>pyramid</span>  is made up of 4 triangles.

------------------------------------
Formula:
------------------------------------
Area of triangle = 1/2 x base x height

------------------------------------
Area of the bottom triangle:
------------------------------------
Area = 1/2 x 9 x 7.8
Area = 35.1 yd²

------------------------------------
Area of the 3 side triangles:
------------------------------------
Area = 3 [ 1/2 x 9 x 10 ]
Area = 135 yd²

------------------------------------
Total Area:
------------------------------------
Total Area = 135 + 35.1 
Total Area = 170.1 yd²

------------------------------------------------------------------------
Answer: Surface Area = 170.1 yd².
------------------------------------------------------------------------

4 0
3 years ago
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