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3 years ago

Does 3/8 and 4/10 form a proportion

Mathematics

1 answer:

FromTheMoon [43]3 years ago

7 0

For 3/8, it can't be reduced further....

4/10, you can reduce that to 2/5

You might be interested in

What is the third term of the sequence defined by f(n)=2n-1

Vilka [71]

F(3)=2(3) -1
f(3)= 6 - 1
f(3)=5

4 0

3 years ago

100 PTS!!!! The perimeter of a rectangle is 4(4x - 5) inches. the length of the sides of the rectangle are 2 x + 3 inches and 3x

vekshin1

Answer:

2 sides are $\frac{33}{13}$ or 2.5

2 sides are $\frac{47}{13}$ or 3.6

Step-by-step explanation:

There must be 2 2x+3s and 2 3x+2s

The perimeter is the sum of the sides (it has 4 sides)

2(2x+3) + 2(3x+2) = 4(4x-5)

distributive property

2*2x + 2*3

4x+6

other one

2*3x + 2*2

6x+4

perimeter

4*4x + 4*-5

16x-20

together...

(4x+6) + (6x+4) = 16x-20

add like terms

10x+10 = 16x-20

add 20 to both sides

10x+30 = 16x

subtract 10x from both sides

30 = 26x

divide by 26 on both sides

$\frac{30}{26} = x$

simplify

$\frac{15}{13}$

Substitute the x value

2 of the sides are 2x+3

$2(\frac{15}{13} ) + 3$

$\frac{30}{13} + \frac{3}{1}$

$\frac{33}{13}$

or 2.5

other sides

$3(\frac{15}{13} ) + 2$

$\frac{45}{13} + \frac{2}{1}$

$\frac{47}{13}$ or 3.6

That's all I can say for now! Hope this helps and a thank won't hurt! :)

5 0

3 years ago

Read 2 more answers

A class of 4th graders sold tickets to their school play. Each of the 23 students in the class sold 4 tickets. The cost of each

zaharov [31]

Answer:

The made $644

Step-by-step explanation:

23*4= 92 (how many ticks sold all together)

92*$7= $644 (the number of tickets multiplied by the price)

8 0

3 years ago

A team of three students are working on a language-learning app; they need to develop 300 micro-lessons and 300 micro-tests befo

Olegator [25]

Answer: a) 15 b)

Step-by-step explanation:

Let X be the number of days:

For LESSONS:

Jordan does 10 / day ( 10*X)

Marco 5 / day ( 5*X)

Junyi 5 / day ( 5*X)

For TESTS:

Jordan does 5 / day ( 5*X)

Marco 10 / day ( 10*X)

Junyi 8 / day ( 8*X)

for each they need a total of 300

a) $10X+5X+5X=300 => 20X = 300 => X = 15$ days for the lessons

b) $5X+10X+8X = 300 => 23X = 300 => X = 13.04$ days for the tests

so they need 15 days to finish both tasks

now if Junyi gets sick we just eliminate his contribution

a) $10X+5X=300 => 15X = 300 => X = 20$ days for the lessons

b) $5X+10X = 300 => 15X = 300 => X = 20$ days for the tests

so in 20 days they will finish without him

If jordan works 10 hours a day, we just replace him with 10/24

a) $10(10/24)+5X+5X= 300 => X = 29.58$ days for the lessons

b) $5(10/24)+10X+8X = 300 => X = 16.51$ days for the tests

so at the end to complete both tasks they need 29.58 days

4 0

3 years ago

Write and solve an equation twice a number is 26

Svet_ta [14]

Answer:

2x = 26, x = 13

Step-by-step explanation:

Write and solve an equation twice a number is 26

x = unknown number

Equation: 2x = 26

Solve:

2x = 26

/2 /2 <== divide both sides by 2

x = 13

Check your answer:

2x = 26

2(13) = 26

26 = 26

This stament is correct

Hope this helps!

4 0

2 years ago