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Elena L [17]
3 years ago
14

ANSWER QUICK!

Mathematics
1 answer:
GREYUIT [131]3 years ago
5 0
The actual answer is 5.66666666
The reason is that because he made 238 over 42 months you divide 238$ by 42 months
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In which set are all fractions equivalent to - 2/3?
Hitman42 [59]
I would love to help you but you haven’t given the sets
3 0
3 years ago
Read 2 more answers
Anyone can help me solve this equation using cross multiplying
Natali5045456 [20]

9514 1404 393

Answer:

  x = 1 or 5

Step-by-step explanation:

The notion of "cross-multiplying" is the idea that the numerator on the left is multiplied by the denominator on the right, and the numerator on the right is multiplied by the denominator on the left. This looks like ...

  \displaystyle \frac{x-1}{7}=\frac{2x-2}{3x-1}\ \longrightarrow\ (x-1)(3x-1)=(7)(2x-2)

Then the solution proceeds by eliminating parentheses, and solving the resulting quadratic equation.

  3x^2-4x+1=14x-14\\\\3x^2-18x+15=0\qquad\text{subtract $14x-14$}\\\\x^2-6x+5=0 \qquad\text{divide by 3}\\\\(x-1)(x-5)=0\qquad\text{factor}\\\\x\in\{1,5\}

_____

<em>Comment on "cross multiply"</em>

Like a lot of instructions in Algebra courses, the idea of "cross multiply" describes <em>what the result looks like</em>. It doesn't adequately describe how you get there. The <em>one and only rule</em> in solving Algebra problems is "<em>whatever is done to one side of the equation must also be done to the other side of the equation</em>." If you multiply one side by one thing and the other side by a different thing, you are violating this rule.

What looks like "cross multiply" is really "<em>multiply by the product of the denominators</em> and cancel like terms from numerator and denominator." Here's what that looks like with the intermediate steps added.

  \displaystyle \frac{x-1}{7}=\frac{2x-2}{3x-1}\\\\\frac{x-1}{7}\times7(3x-1)=\frac{2x-2}{3x-1}\times7(3x-1)\\\\(x-1)(3x-1)=(2x-2)(7)\qquad\textit{looks like}\text{ cross multiply}

8 0
2 years ago
Write 23 hundredths in scientific notation
Dmitry [639]

Answer:

Step-by-step explanation:

23 hundredths = 0.23 = 2.3 * 10⁻¹

8 0
3 years ago
The perimeter of a 5 sided figure is 45.56 meters. Two of the sides have the same length. The sum of the other three side length
klio [65]

Let

x---------> the length of the sides that have the same length in meters

we know that

the perimeter of the figure is equal to

45.56=(24.2+2x)

<u>solve for x</u>

2x=45.56-24.2

x=21.36/2

x=10.68\ m

therefore

<u>the answer is</u>

Each of the same length side is 10.68\ m  long


3 0
3 years ago
Hi! Is there anyone good with finding the surface area of something? If so, please comment. If you do help me, I will give you 5
Aleks [24]
No sorry 123
God bless you
7 0
3 years ago
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