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2 years ago

15

can someone help me im tryna finish as. much as pre-algebra as i can im leaving to vacation and i need to finsish allot of math!

someone help :C

1 answer:

konstantin123 [22]2 years ago

7 0

Answer:

i only know the answer for the first one, im sorry, its 30

Step-by-step explanation:

a=h b/2 if you need help with finding the area of something again use this, Geometry calculator

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Lee is thinking of two Numbers,the product is 18. the quotient is 2

defon

X, y - the numbers

The product is 18.
$xy=18$

The quotient is 2.
$\frac{x}{y}=2 \ \ \ |\times y \\
x=2y$

Substitute 2y for x in the 1st equation:
$2y \times y=18 \\
2y^2=18 \ \ \ |\div 2 \\
y^2=9 \\
y=\pm \sqrt{9} \\
y=3 \ \lor \ y=-3 \\ \\
x=2y \\
x=2 \times 3 \ \lor \ x=2 \times (-3) \\
x=6 \ \lor \ x=-6 \\ \\
(x,y)=(6,3) \hbox{ or } (x,y)=(-6,-3)$

The numbers are 6 and 3 or -6 and -3.

6 0

3 years ago

Read 2 more answers

Is 2 a solution of 4x +12=4?

mojhsa [17]

Answer:

no

Step-by-step explanation:

4x +12 = 4

4(2) +12 =/= 4

8 +12 =/= 4

8 +12 = 20

(sorry if it doesn't make sense,I tried)

5 0

3 years ago

Read 2 more answers

Do 3+5 and 5+3 represent the same expression

andrezito [222]

Hello there,

Yes, 3+5 and 5+3 do represent the same expression. This expression is called the commutative property.

Hope this helps.

~Jurgen.

3 0

3 years ago

Read 2 more answers

If c=12 and d=9 , what is 82-4c+d

Doss [256]

Answer:

43

Step-by-step explanation:

multiply 4 x c(12)=48

then just plug it in and solve

82-48=34

34+9=43

7 0

3 years ago

How do you solve <br> 10 squared + 13 squared = c squared<br> (Pythagorean theorem)

alina1380 [7]

$10^2 + 13^2 =c^2\\\\100 + 169=c^2\\\\269 = c^2\\\\\boxed{\bf{c=\sqrt{269}\approx 16.4}}$

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3 years ago