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alexgriva [62]
3 years ago
7

Please help! Thanks (:

Mathematics
1 answer:
ryzh [129]3 years ago
3 0
\frac{x*x}{2}=49 \\  \\ x^2=49*2\\x^2=98 \\x= \sqrt{98} \approx 9.9 \ in
You might be interested in
10 yards 1 foot 9 inches divided by 3
AysviL [449]

Answer:

127 inches

Step-by-step explanation:

A single yard is equal to 3 feet. So one yard 1 foot and 9 inches is:

3(10)+1 and 9 inches.

each feet has 12 inches, so it goes something like this:

12(31)+9 inches

multiply it out:

372+9\\381

Thats the total number of inches, now we divide by 3 (use long division:

\frac{381}{3}=127

Hope this helps!

6 0
2 years ago
Solve this system using substitution then write your answer as an ordered pair (x,y) X-5y=4 and Y=2x+14
Nikolay [14]

Answer:

(74/9,274/9)

Step-by-step explanation:

You have

x-5y=4 and

y=2x+14

so we subsitute y in the first equation

x-5(2x+14)=4

x-10x-70=4

-9x=74

x=74/9

so y=2(74/9)+14

y=148/9+14

y=274/9

so the oredered pair is

(74/9,274/9)

4 0
3 years ago
I need these pls!!!!!
Allisa [31]

Answer:

1) $38.40 2) $255. 3) $5.80 4) $3.12

Step-by-step explanation:

So you have to multiply the years by the amount of money you have. Then you multiply that by the percent and divide by 100. (For the last one: because its a month you have to make it a fraction so it was 8/12)

4 0
2 years ago
Pls solve for x hurry !
wariber [46]

Answer:

7

Step-by-step explanation:

7x + 68 = 2x + 103

Subtract 2x from each side

5x + 68 = 103

Subtract 68 from each side

5x = 35

divide 5 from 35 and you get X = 7

6 0
3 years ago
There is a fraction equivalent to 6/7. The sum of the numerator and the denominator is 78. What is the fraction
Zanzabum
The fraction is 36/42.

36 + 42 = 78
36/42 = 6/7
4 0
3 years ago
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