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3 years ago

Olivia uses the work below to determine 55% of 720.

Mathematics

1 answer:

Anna11 [10]3 years ago

8 0

Answer:

396

Step-by-step explanation:

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1. Identify the lateral area and surface area of a regular square pyramid with base edge length 5 in. and slant height 9 in.

zlopas [31]

1. C
L=1/2(Pxl)
L=1/2(20x9)
L=1/2(180)
L=90

SA=1/2(Pxl)+B
SA=90+5^2
SA=115

B, A, C, B.

6 0

2 years ago

Can somebody help me with 20. Thank you!!!

riadik2000 [5.3K]

Answer:

What do you mean, I'll help.

Step-by-step explanation:

6 0

2 years ago

Someone please help me

Mars2501 [29]

Answer:

x=-1,-2

Step-by-step explanation:

Multiply the given equation with (x+1) on both sides. We'll get,

x+2/x=-3

or,x^2+2=-3x

or,x^2+3x+2=0

or,x^2+2x+x+2=0

or,x(x+2)+1(x+2)=0

or,(x+2)(x+1)=0

or,x=-2,-1

4 0

3 years ago

What is the x-coordinate of the solution of the system? x+y+3 4x-y=-38

steposvetlana [31]

Note: I am assuming the first equation is:

x+y = 3

Answer:

The solution to the system of equations is:

(x, y) = (-2, 36)

Therefore, the x-coordinate of the solution of the system

x = -2

Step-by-step explanation:

Given the system of equations

$\begin{bmatrix}x+y=34\\ x-y=-38\end{bmatrix}$

subtracting the equations

$x-y=-38$

$-$

$\underline{x+y=34}$

$-2y=-72$

solve -2y for y

$-2y=-72$

Divide both sides by -2

$\frac{-2y}{-2}=\frac{-72}{-2}$

$y=36$

For x+y=34 plug in y = 36

$x+36=34$

Subtract 36 from both sides

$x+36-36=34-36$

Simplify

$x=-2$

Thus, the solution to the system of equations is:

(x, y) = (-2, 36)

Therefore, the x-coordinate of the solution of the system

x = -2

6 0

3 years ago

Which of these values cannot represent the probility of an event happening? 0.33 56% 7/8 1.2

I am Lyosha [343]

Answer:

1.2

Step-by-step explanation:

Because the probability cannot be over 1 (assuming 1 is 100%) you can't have a 120% chance.

4 0

3 years ago