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3 years ago

Plsssssssssssssss helpppppppppppppppppppppppppppppppppp

Mathematics

1 answer:

Schach [20]3 years ago

5 0

Answer:

96cm^2

Step-by-step explanation:

A=L×w

A=8×12

A= 96

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What is the first step to solve the following system of equations using substitution?

Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

$x = 4, y = 5$

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

$x - y = -1$

$2x - y = 3$

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

$x-y=-1$

Add y to both sides

$x-y+y=-1+y$

$x=-1+y$

Thus, option A) is true.

<u>NOW LET US SOLVE THE REMAINING PORTION</u>

$\mathrm{Subsititute\:}x=-1+y$ to solve for y

$\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}$

$-2+y=3$

$y=5$

For x = -1 + y

substitute y = 5

$x=-1+5$

$x=4$

Thus, the solution to the system of equations be:

$x = 4, y = 5$

3 0

3 years ago

A bag contains yellow marbles and red marbles, 77 in total. The number of yellow marbles is 5 more than 3 times the number of re

bulgar [2K]

Answer:

Step-by-step explanation:

yellow marbles=5+ 3r(r is the number of red marbles)

red marbles=3r

3r+3r+5=77

6r=77-5

6r=72

r=72/6=12

yellow marbles = 5 + 3r

5+ 12 x 3

5+ 36

=41

8 0

3 years ago

Which expresssion is equivalent to 24^1/3

Marina86 [1]

Answer:

241/3

Step-by-step explanation:

Trying to find the cube root of 24

Factor 24

one of the factors should be a perfect cube and one will not

Of course you can also try cubing the choices given one of them will equal 24

8 0

3 years ago

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How do you solve the following equation: 5-(2x-3)=-8+2x

kirza4 [7]

I believe it would be done like this:
subtract 2x-8 from both sides. then use cubric formula.
answer should be x= 1.688242

4 0

4 years ago

I need help please and thank you

Nat2105 [25]

I think it’s 4 m because diameter is 2r

3 0

4 years ago

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