Y-x=02x-5y=9

Y-5=2x
Y-3x=-1

Anyone good at substitution that could do these two problems for me?

Answers

Answer 1
Answer: 1.) y-x=0 and 2x-5y=9
 
Lets take the first equation (since it is the easiest to use for the substitution process) and set y equal to x by adding x to both sides.

y=x

Then we will substitute this into the second equation like this...

2x-5(x)=9

2x-5x=9

Combine like terms...

-3x=9

Divide both sides by -3...

x=-3 

^^^ That's the answer!


2.) y-5=2x and y-3x=-1

Again let's use the first equation and set I equal to y by adding 5 to both sides...

y=2x+5

Now let's substitute this into the second equation...

(2x+5)-3x=-1

2x+5-3x=-1

Now lets put the terms in order and then combine like terms...

-3x+2x+5=-1

-1x+5=-1

Now, let's subtract 5 to both sides...

-1x=4

Then divide both sides by -1...

x=4

^^^ That's the answer for #2!


Hope that helped! :-)

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at a track meet,Jacob and daniel compete in 220 m hurdles. Daniels finishes in 3/4 of the a min.Jacob finishes with 5/12 of a min remaining.who ran the race in faster time?

Write the rate 1/7 inch----------------- as a unit rate
1/14 minute

Answers


1/7in=1/14min

14/7in=min

2in=min

The rate is 2 inches per minute

Final answer:

The unit rate for the given problem, 1/7 inch per 1/14 minute, is calculated by dividing the inches by the minutes. This simplifies to 2 inches per minute.

Explanation:

In mathematics, a unit rate is a rate in which the second number (or denominator) is one. When you are asked to write the rate 1/7 inch per 1/14 minute as a unit rate, you are being asked to find a rate that tells you how much of each quantity occurs for each single unit of the other quantity, in this case for 1 minute. To calculate this unit rate, divide the quantity in inches by the quantity in minutes.

In this problem, you can find the required unit rate by dividing (1/7) by (1/14), which simplifies to (1/7) * (14/1) = 2 inches. So, the unit rate for this problem is 2 inches per minute.

Learn more about Unit Rate here:

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mark has 312 books in his bookcases she has 11 as many fiction books as nonfiction books how many fiction books does mark have?

Answers

11 as many fiction books as non fiction.

Fiction books F,  Non Fiction NF

F: NF =  11 : 1

Total ratio 11+ 1 = 12.

Fraction of Fiction books F,  =  11/12

Total books = 312.

Fiction books  =     11/12 * 312 =  286

Fiction books = 286 
 286 = answer

good homworks.

54 x 67 using the distributive property

Answers

.                    54 x 67
                 (50+4)(60+7)
(50x60) + (50x70) + (4x60) + (4x7)
             3000+350+240+28
                       3618

The answer is 3,618

Solve the equation. Check your answer. If necessary, round to 3 decimal places In (t - 1) + In x^2 = 6, X=

Algebra 2

Answers

Answer:

x ≈ ±20.086/√(t - 1)  

Step-by-step explanation:

ln(t - 1) + ln(x²) = 6

Recall that lnu + lnv = ln(uv). Then  

ln(t - 1) + ln(x²) = ln[(t-1)x²] = 6

Take the natural antilogarithm of each side

(t - 1)x² = e⁶

Divide each side by t - 1

x² = e⁶/(t-1)

Take the square root of each side

x = ±e³/√(t - 1)

x ≈ ±20.086/√(t - 1)

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Answers

1: million

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3: ten thousand

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A square tray has an area of 196 square inches. What is the length of one side of the tray?   A. 12 inches   B. 13 inches   C. 14 inches   D. 16 inches

Answers

um my answer is 14 in