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Goshia [24]
4 years ago
12

Write each fraction as a unit fraction 12/84 13/143 23/138

Mathematics
1 answer:
alexandr1967 [171]4 years ago
7 0
A unit fraction is a fraction whose numerator is 1.

\frac{12}{84}=\frac{12 \div 12}{84 \div 12}=\frac{1}{7} \\ \\
\frac{13}{143}=\frac{13 \div 13}{143 \div 13}=\frac{1}{11} \\ \\
\frac{23}{138}=\frac{23 \div 23}{138 \div 23}=\frac{1}{6}
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River C is 100 miles longer than River D. If the sum of their lengths is 5,560 miles, what is the length of each river?
Elan Coil [88]
x-\ length\ of\ river\ D\\\\
x+100-\ length\ of\ river\ C\\\\
x+x+100=5560\\\\
2x+100=5560\ \ \ | subtract\ 100\\\\
2x=5460\ \ \ | divide\ by\ 2\\\\
x=2730miles\\\\
2730+100=2830miles\\\\
River\ C\ is\ 2830\ miles\ long\ and \ river\ D\ is\ 2730\ miles\ long.
5 0
3 years ago
Hello people ~
fiasKO [112]

Hey there!

Complementary angles add up to 90 degrees.

We are given

An angle of 79 degrees

and we're asked to find the complement of the angle.

So let's set up an equation:

79+x=90

where x=the unknown angle

Subtract 79 from both sides:

79-79+x=90-79

x=11

Hence, the measure of the unknown angle is

\boxed{\boxed{\bold{11}}}

Hope everything is clear.

Let me know if you have any questions!

#LearningIsFun

\rule{200}{2}

4 0
2 years ago
Read 2 more answers
25 points. Need help
mash [69]

Answer:

BD = 21 units

Step-by-step explanation:

By applying mean ratio theorem in the given triangle ABC,

\frac{AD}{BD}=\frac{BD}{CD}

AD × CD = BD²

21 × 21 = BD²

BD² = (21)²

BD = 21

Therefore, measure of segment BD is 21 units.

7 0
3 years ago
The area of a rectangle is 33 m-, and the length of the rectangle is 5 m less than twice the width. Find the dimensions of the r
denis-greek [22]

Answer:

x = 9.25

y = 13.5

Step-by-step explanation:

area = 33

let length be y and width be x

2x - 5 = y

area of rectangle = length * breadth

(2x-5)(x)=33

2x²-5x=33

2x²-5x-33=0

solving quadratic equation

x = 9.25

y = 13.5

7 0
3 years ago
Please help me i beg of u due today plzzzz help
Artyom0805 [142]

Answer:

i think its a dialation

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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