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3 years ago

Evaluate the expression when y=5 and x=18 x-3y

Mathematics

2 answers:

Keith_Richards [23]3 years ago

6 0

Answer:

Step-by-step explanation:

Step 1: replace y for 5, and x for 18

x-3y

18-3(5)

Step 2: simplify.

18-15

dexar [7]3 years ago

4 0

Answer:

Step-by-step explanation:

18 - 3(5)= 18 -15= 3

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otez555 [7]

In decimal form it is 1.8

3 0

3 years ago

Read 2 more answers

How do i do this???????

Fittoniya [83]

Answer:

2y-4-6y-12=4

-4y=20

y= -5

Step-by-step explanation:

because (y+2)(y-2)=y^2-4

so we have the step to let the every part have the same denominator y^2-4

2(y-2)/(y+2)(y-2) -6(y+2)/(y-2)(y+2)=4/(y-2)(y+2)

the denominators are the same so the equality .we just need the part over be the same 2y-4-6y-12=4

y= -5

3 0

3 years ago

Find the area of the following shape. You must show all work to receive credit

kirza4 [7]

Answer:

42 square units

Step-by-step explanation:

Draw segments - 5 to A, A to the point of intersection of Band C and from from the point of intersection of B, C upto 2. It will form a square with each side 8 units and four triangles.

Subtracting the area of 4 four triangles from the area of the square will give you the area of the required shape.

Area of the shape

$= {8}^{2} - \frac{1}{2} \times 3 \times 6 - \frac{1}{2} \times 5 \times 2 - \frac{1}{2} \times 2 \times 3\\ - \frac{1}{2} \times 2 \times 5 \\ \\ = 64 - 3 \times 3 - 5 \times 1 - 1\times 3 - 1 \times 5 \\ \\ = 64 - 9 - 5 - 3 - 5 \\ \\ = 64 - 22 \\ = 42 \: {units}^{2}$

3 0

3 years ago

Read 2 more answers

Giving branliest

MatroZZZ [7]

Answer:

5(x+10)^-30-(-5) = 0

5(x+10)^-30+5=0

5x + 50 + 5 = 0

5x + 55 = 0

5x = -55

x = -55

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3 0

3 years ago

-5/3*(-1/8) multiply to find answer

kari74 [83]

Fraction:

5/24

Decimal Form:

0.2083

6 0

3 years ago