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4 years ago

Which property of equality would be used to solve 3x = 81?

Mathematics

2 answers:

konstantin123 [22]4 years ago

5 0

Answer:

division

Step-by-step explanation:

you'll have to get rid of the 3 so that we can get the value of x. in other words the value of 3 xs is 81, but we need the value of only 1 x, which is why we're gonna divide both sides by 3. to get the value of only 1 x.

hope i helped :))

slega [8]4 years ago

4 0

Division x=81/3 that’s right

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James, Ryan and Jill share £120 in the ratio 3:2:1. Find out how much each person recieves.

ArbitrLikvidat [17]

Answer:

James = £60, Ryan = £40 and Jill = £20

Step-by-step explanation:

James - 3, Ryan - 2 and Jill - 1

3 + 2 + 1 = 6

£120 / 6 = 20

Times 20 by each of the three numbers (3, 2 and 1)

3 x 20 = £60 (James)

2 x 20 = £40 (Ryan)

1 x 20 = £20 (Jill)

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3 years ago

Read 2 more answers

Write a word problem that can be solved using 25+0.5 X is less than or greater to 60

Tatiana [17]

Matt is having a lemonade stand and he needs $60 for a school fundraiser. he already has $25, but he needs more. If hes selling lemonade for $0.50 each cup, write an equation that shows how much money he needs to get at least $60.

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7 0

3 years ago

A specific brand of gourmet chocolate candy contains 7.00 gg of dietary fat in each 22.7-gg piece. How many kilograms of dietary

Oduvanchick [21]

Answer:

635599482kg

Step-by-step explanation:

A gourmet chocolate candy has 7.00 gg of dietary fat in each 22.7-gg piece

for the 22.7 piece , the gg is 7 x 22.7 = 158.9gg in total

1gg = 2204622.6218488 lbs

158.9gg in total = 158.9 x 2204622.6218488 = 350314534.612

for the box of 4.00 lblb of candy

it is 350314534.612 x 4 = 1401258138.45lb

since our answer is needed in kilograms we convert 1401258138.45lb to kilograms

1lb = 0.453592kg

1401258138.45lb = 1401258138.45lb x 0.453592kg = 635599481.513 ≈ 635599482kg

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3 years ago

13)Given triangle XYZ as shown at right find YZ rounded to the nearest tenth

blagie [28]

Part 3) Given triangle XYZ as shown at right find YZ rounded to the nearest tenth

we know that
the sum of the internal angles of a triangle add up to 180 degrees
so
m∠X=180-[55+29]----> 96°
applying the law of sines
YZ/sin X=35/sin 55°------> YZ=35*sin 96/sin 55-----> YZ=42.49
YZ=42.5 units

the answer Part 3) is
YZ=42.5 units

Part 4)
we know that
OQ/NQ=PR/NR
NQ=4X+(2X+2)---> 6X+2
OQ=2X+2
PR=15
NR=24+15----> 39
(2X+2)/(6X+2)=15/39
39*(2X+2)=15*(6X+2)
78X+78=90X+30
90X-78X=78-30
12X=48
X=4

The answer part 4) is
x=4

Part 5) A trapezoid is show below. Calculate the measure of angle x. Round to the nearest tenth of a degree

see the picture with letters attached to better understand the problem

we know that
BC=36-28-----> 8 ft

sin x=BC/AC-----> sin x=8/12
x=arc sin(8/12)-------> x=41.81°------> x=41.8°

the answer Part 5) is
x=41.8°

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3 years ago

What is the area of the triangle shown below? | 1 10

Alenkasestr [34]

Answer:

$\frac{1}{2} \times 10 \times 8 \\ \\ = 40$

this is the explanation.

7 0

3 years ago