31,50 is 42% os what number

Answers

Answer 1

Answer: $(31,50)/(x)=(42)/(100)$

The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.

$(31.50)/(x) = (42)/(100)\n\ncross\ multiply\n\n31.50*100=3150\n42* x=42x\n\n3150=42x\nx=75$
Your answer is 75.

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What is 1/4 - [-3/8] =

Answers

1/4 - [-3/8]

$(1)/(4)- (-(3)/(8))$

Negative times negative become positive

$(1)/(4) + (3)/(8)$

Now to add fractions we make the denominator same

4 and 8 are in the denominator

Least common denominator of 4 and 8 is 8

To make denominators same , we multiply the numerator and denominator of first fraction by 2.

$(1*2)/(4*2) + (3)/(8)$

$(2)/(8) + (3)/(8)$

The denominators are same so we combine the numerators

$(2+3)/(8)$

$(5)/(8)$

$(1)/(4) - ( - 3)/(8) = (5)/(8)$
5/8 cross multiply on the top then multiply the denominator you get 20/32 reduce that it's 5/8

I need help with 1,3,4,5,6,7,10 and the top words in the box are to be used to complete the sentences

Answers

1:intruder,3:ravine,4:conceal,5:profit,6:lapping ,7: companion,10:grasp.have a nice day ,and hope this helped

number 7 is profit and number 10 is cease

What is 64% of 875??

Answers

i think the answer is $560

working:
$875 * 64% = $560

64% of 875
64% = $(64)/(100)$ = 0.64
Change the percentage to a decimal to continue...
Multiply the given by the percentage
875 × 0.64 = 560

Answer is 560

Find the area of the composite figure. PLEASE HELP. SORRY BUT ENGLISH ONLY.

Answers

looks like a regular hexagon

see my attachment

we put some imaginary lines and take the 2 trignles on the right and put them on teh left side
now we have a rectangle wit height 8 and width 2+4 or 6
area=8*6=48 cm^2

Four out of 10 people vote them in a town with 200,000 people how many vote

Answers

4/10 * 200000 =80,000

Answer:

80,000 People Voted

Step-by-step explanation:

4/10 is equal to 40 Percent, this means that %40 of the sample group vote,d with this information you can assume that %40 of the 200,000 people voted as well.

40 Percent x 200,000 is 80000, this allows you to conclude that 80,000 people voted.

Please state the all definitions Perpendicular (definition and a real world example) -

Negative Reciprocal (definition and example) -

Parallel (definition and a real world example) -

Answers

negative reciprocal- Negative Reciprocal. Opposite Reciprocal. The result of taking the reciprocal of a number and then changing the sign.
parallel- In geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel.

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