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3 years ago

Solve x: |x| -8 = -5

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

4 0

So first you want to add 8 to both sides, so you will get

lxl = 3

Then x is just the positive, and negative version of that, so

x=3, and x=-3

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A geography teacher lists 12 South American countries on the chalkboard. She asks each student in her class to write a report co

gizmo_the_mogwai [7]

<span>Newton's symbol
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$C_{12}^3={12\choose 3}=\frac{12!}{(12-3)!*3!}=\frac{12!}{9!*3!}=\frac{9!*11*\not12^2}{9!*\not3*\not2*1}=11*2=22$

Answer = 22

8 0

4 years ago

Subtract 1.05 from a certain number. Multiply the difference by 0.8, add 2.84 to the product then divide the sum by 0.01 and get

attashe74 [19]

Just do the whole process backwards
700*0.01=7
7-2.84=4.16
4.16/0.8=5.2
5.2+1.05=6.25

8 0

3 years ago

Please help, thanks.

Svetllana [295]

$\text{Apply Pythagorean theorem,}\\ \\~~~~~~12^2 = 3^2 + h^2\\\\\implies h^2 = 12^2 -3^2\\\\\implies h^2 = 144-9\\\\\implies h^2 = 135\\\\\implies h = \sqrt{135}\\\\\implies h = 3\sqrt{15}\\\\\implies h \approx 11.62$

6 0

2 years ago

Read 2 more answers

Evaluate - 1 - ( - z ) where z = -2

mr_godi [17]

-1+z is the answers

6 0

3 years ago

Read 2 more answers

Paul wanted to bring his family to the Children’s Museum. There was an exhibit with carnival rides. The tickets for each ride we

Nostrana [21]

We want to define and solve a linear equation to model the given case.

The answers are:

a) x = number of tickets, y = total cost.

b) y = $1.35*x + $6.35

We know that:

The tickets for each ride were $1.35 per ticket.

Paul purchased 30 tickets

He spent a total of $46.85 (on tickets and admission)

The cost for the 30 tickets is:

30*$1.35 = $40.50

a) Now we can define two variables:

y = total cost

x = number of tickets

b) the linear equation would be:

y = $1.35*x + P

Where P is the price of admission.

And we know that the total cost for 30 tickets is $46.85, then we have:

$46.85 = $40.50 + P

$46.85 - $40.50 = P = $6.35

So the admission price is $6.35

This means that the linear equation is:

y = $1.35*x + $6.35

c) Brief explanation, we have the variable y that represents the total cost, it is equal to the admission price (which we found) plus $1.35 times the number of tickets bought (x).

If you want to learn more, you can read:

brainly.com/question/13738061

3 0

3 years ago