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IRISSAK [1]
3 years ago
7

Evaluate the expression when x = 3.6) 21-X​

Mathematics
1 answer:
vovikov84 [41]3 years ago
3 0

Answer: 18

Step-by-step explanation: You would substitute x for 3 in the expression. This would equal 21-3, or 18 when simplified

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How do you graph 3x-4y=-4 for the domain D:{8,4,0,-4,-8}
kotegsom [21]
       3x - 4y = -4
3x - 3x - 4y = -4 - 3x
             -4y = -4 - 3x
             <u>-4y</u> = <u>-3x - 4</u>
              -4         -4
                y = 0.75x + 1
<u>D:{8, 4, 0, -4, -8}</u><u>            </u>
<u>D{8}</u>
y = 0.75x + 1
y = 0.75(8) + 1
y = 6 + 1
y = 7
(x, y) = (8, 7)
D{8}, R{7}

<u>D{4}</u>
y = 0.75x + 1
y = 0.75(4) + 1
y = 3 + 1
y = 4
(x, y) = (4, 4)
D{4}, R{4}

<u>D{0}</u>
y = 0.75x + 1
y = 0.75(0) + 1
y= 0 + 1
y = 1
(x, y) = (0, 1)
D{0}, R{1}

<u>D{-4}</u>
y = 0.75x + 1
y = 0.75(-4) + 1
y = -3 + 1
y = -2
(x, y) = (-4, -2)
D{-4}, R{-2}

<u>D{-8}</u>
y = 0.75x + 1
y = 0.75(-8) + 1
y = -6 + 1
y = -5
(x, y) = (-8, -5)
D{-8}, R{-5}

D{8, 4, 0, -4, -8}
R{7, 4, 1, -2, -5}
{(8, 7), (4, 4), (0, 1), (-4, -2), (-8, -5)}
3 0
3 years ago
Carson invested $80,000 in an account paying an
11Alexandr11 [23.1K]

Answer:

315881.53

Step-by-step explanation:

We first need to figure out how long it takes for the money to triple

let x= number of years it takes for the money to tirple

3=(1+\frac{.04}{365})^{365x}\\log_{1.0001}3=365x\\10025.38644=365x\\27.46681216=x

Now plug that value into the continously compounding formula

80000*e^{27.4668*.05}=315881.5314

Which rounds to

315881.53

7 0
3 years ago
Hey plz help and show work
blsea [12.9K]
The dog house consists of two geometric objects, triangular prism and rectangular prism.

First, find the surface area of triangular prism
The triangular prism consists of
base of triangle (b) = 3 ft
height of triangle (h) = 2.5 ft
height of prism or length of rectangle (l) = 4 ft
side of triangle or width of rectangle (w) = 2.5 ft

Now, calculate the area
area of tp = area of two triangle + area of 2 rectangle
area of tp = (2 × 1/2 × b × h) + (2 × l × w)
area of tp = (2 × 1/2 × 3 × 2) + (2 × 4 × 2.5)
area of tp = 6 + 20
area of tp = 26 ft²

Second, find the surface area of rectangular prism
The rectangular prisms consists of
length (l) = 3 ft
width (w) = 4 ft
height (h) = 2 ft

Now, calculate the area
area of rp = area of back and front rectangle + area of left and right rectangle
area of rp = (2 × l × h) + (2 × w × h)
area of rp = (2 × 3 × 2) + (2 × 4 × 2)
area of rp = 12 + 16
area of rp = 28 ft²

Third, add both of the area
area = area of tp + area of rp
area = 26 + 28
area = 54 ft²

The area of the dog house is 54 ft
²
6 0
3 years ago
Need help with number 60
vampirchik [111]
You could write 42/20 for #60.
5 0
4 years ago
I NEED HELP
Goshia [24]
2p+3>2p-6
-3 -3
2p > 2p -8
0p >-8
C. No solution
6 0
3 years ago
Read 2 more answers
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