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Paraphin [41]
3 years ago
8

Please help? On math?

Mathematics
1 answer:
Molodets [167]3 years ago
4 0
6.4^2 + 3.5^2 = c^2\\\\40.96 + 12.25 =c^2\\\\c^2 = 53.21\\\\c=\sqrt{53.21}\\\\\boxed{\bf{c = 7.3~cm}}
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What is 2/3+3/4+5/8 please help
torisob [31]

Answer:

2 1/24

Step-by-step explanation:

2/3 =    16/24

3/4=      18/24

5/8=       15/24

16+18+15=49

49-24=  25-24=1

2 1/24

5 0
3 years ago
Explain how you can find the missing number and 3 4/5 divided by something equals 2 5/7 then find the missing number
enyata [817]

let's firstly, convert the mixed fractions to improper, and then do equation.


\bf \stackrel{mixed}{3\frac{4}{5}}\implies \cfrac{3\cdot 5+4}{5}\implies \stackrel{improper}{\cfrac{19}{5}}
~\hfill
\stackrel{mixed}{2\frac{5}{7}}\implies \cfrac{2\cdot 7+5}{7}\implies \stackrel{improper}{\cfrac{19}{7}}
\\\\[-0.35em]
\rule{34em}{0.25pt}


\bf \cfrac{~~\frac{19}{5}~~}{x}=\cfrac{19}{7}\implies \cfrac{~~\frac{19}{5}~~}{\frac{x}{1}}=\cfrac{19}{7}\implies \cfrac{19}{5}\cdot \cfrac{1}{x}=\cfrac{19}{7}\implies \cfrac{19}{5x}=\cfrac{19}{7}
\\\\\\
\stackrel{}{\cfrac{7}{5x}=\cfrac{19}{19}}\implies \cfrac{7}{5x}=1\implies 7=5x\implies \cfrac{7}{5}=x\implies 1\frac{2}{5}=x

5 0
3 years ago
3-2019 CR
Pepsi [2]

Answer:

x=-0.9, x=1.7, x=4.2

Step-by-step explanation:

7 0
3 years ago
If a car travels 180 km on 12 liters of gas, how many km per liter does the car get? Express in simplest form.
lora16 [44]

Answer:

<u>5 kilo-meters per liter of gas</u>

Step-by-step explanation:

180 divided by 12 would be 180 / 12 = 5 km per liter

<em>(P.S., pls mark me brainliest, and have a nice day)</em>

6 0
3 years ago
Write 5,000,039 in scientific notation.
IRINA_888 [86]
The answer is C. 5.000039x10^6.

In order to change something into scientific notation you have to move the decimal place enough times to get the first number to be between 1 and 9. After that, you must count how many space you moved it and that is your exponent. Moving the decimal space to the left gives you a positive exponent. Moving it to the right gives you a negative exponent. 
7 0
3 years ago
Read 2 more answers
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