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3 years ago

Solve for X: 5(2x-12)=140

Mathematics

2 answers:

GenaCL600 [577]3 years ago

8 0

X= 20 I will attach a photo of my work!

Mrac [35]3 years ago

6 0

Answer:

x=20

Step-by-step explanation:

10x-60=140

10x=140+60

10x=200

x=20

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Wrote and solve an equation to find the number.The difference of twice a number and 7 is 9

andrew11 [14]

n - 7 = 9

Step-by-step explanation:

so basically just make up a random variable and place it for the "twice a number" then u sovle it as a 2 step equation

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2 years ago

What is 7 4/5 + 8 8/9

Paladinen [302]

7 4/5 = 7 36/45
8 8/9 = 8 40/45
+----------
15 75/45
15 75/45 = 16 30/45

7 0

2 years ago

Simplify 2x7.5+2x11 thanks!

fomenos

2 · 7.5 + 2 · 11 = 15 + 22 = 37

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2 years ago

J = K (1+ p/100) make p as a subject

olganol [36]

Answer:

p = 100(J/K - 1)

Step-by-step explanation:

When we want to make a variable the subject of an equation, we want to get that variable by itself on one side of the equation - to unwrap it from all the operations attached to it.

Here's what the process looks like for p:

$J=K(1+p/100)\\J/K=1+p/100\\J/K-1=p/100\\p=100(J/K-1)$

8 0

2 years ago

In the pictures down below Can anyone help? Fractions and percents

wariber [46]

1st Picture:
$3)- \frac{6}{7} +\frac {10}{11}
\\\\LCD:77
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 \\ \\ 4) 3\frac{6}{7}* 2 \frac{1}{10}= \frac{27}{7} * \frac{21}{10} = \frac{567}{70} =\frac{81}{10} = 8\frac{1}{10}
\\\\5)2\frac{1}{2}+3\frac{1}{3}
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2nd Picture:

$1)80 percent of 80 = .8*80 =64
\\\boxed{64}
\\\\2)95percent of 100=.95*100=95
\\\boxed{95}$

7 0

3 years ago