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3 years ago

What is an easy method to workout 35% of 70

Mathematics

2 answers:

dimulka [17.4K]3 years ago

7 0

Step-by-step explanation:

$70 \times \frac{35}{100} = 24 .5$

AVprozaik [17]3 years ago

7 0

Answer:

24.5

Step-by-step explanation:

35% can be broken down into 10% + 10% + 10% + 5%

To find 10% of 70, divide 70 by 10.

To divide a number by 10, move the decimal point 1 place to the left.

⇒ 70 ÷ 10 = 7

So 10% = 7

5% is half of 10%

⇒ 5% = 7 ÷ 2 = 3.5

Therefore,

10% + 10% + 10% + 5% = 7 + 7 + 7 + 3.5

= 21 + 3.5

= 24.5

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3 years ago

If a set has 1,024 subsets, how many elements does it have?

sergiy2304 [10]

(10 elements..........) 2^(10)=1024
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3 years ago

Read 2 more answers

What is the equation of the line that passes through the point (-5,7) and has a slope of -1/5

RoseWind [281]

Answer:

y=-1/5x+6

Step-by-step explanation:

y-b=m(x-a)

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4 years ago

32 what value of x is the equation 2^2x+ 7 = 2^15true?

Talja [164]

Value of x = 7.499

Step-by-step explanation:

We need to find value of x in the equation: $2^{2x}+ 7 = 2^{15}$

This can be solved using natural log

Solving:

$2^{2x}+ 7 = 2^{15}$

Subtract 7 from both sides:

$2^{2x}+ 7-7 = 2^{15}-7$

Simplifying:

$2^{2x}=32768-7$

$2^{2x}=32761$

Using rule if f(x)=g(x) then, ln(f(x))=ln(g(x))

So,

$ln(2^{2x})=ln(32761)$

Applying log rule: logₐ(x^b)= b logₐ(x)

$2x(ln(2))=ln(32761)$

Divide both sides by 2ln(2)

$2x(ln(2))=[tex]\frac{2x(ln(2))}{2(ln(2))}=\frac{ln(32761)}{2(ln(2))} \\x=\frac{ln(32761)}{2(ln(2))}\\Rewriting\,\,32761\,\,as 181^2\\x=\frac{ln(181^2)}{2(ln(2))}\\x=\frac{2ln(181)}{2(ln(2))}\\x=\frac{ln(181)}{ln(2)}\\x=7.499$

So, Value of x = 7.499

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

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4 years ago

0.489 in two other from

liberstina [14]

One form is 489/1000

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3 years ago