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3 years ago

I need help with this math can someone explain it please?

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

5 0

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Jamal hiked on two trails. The first trail was 5 1/3 miles long and the second trail was 1 3/4 times as long as the first trail.

earnstyle [38]

Answer:

Jamal hiked = 44/3 miles

Step-by-step explanation:

Mixed numbers are given in this question which can be changed into fractions by multiplying the denominator by quotient and adding numerator to it.

Given that:

Length of first trail: 5 1/3 = (3*5 + 1)/3 = 16/3 miles

According to given condition:

Length of second trail: 1 3/4 * 16/3 = (4*1+3)/4 * 16/3 = 7/4*16/3

By simplifying:

Length of second trail = 28/3 miles

So the total miles Jamal hiked = 16/3 + 28/3

Jamal hiked = 44/3 miles

i hope it will help you!

4 0

3 years ago

There are 80 major sources of pollen in state A. These pollen sources are categorized as grasses, weeds, and trees. If the numb

Oxana [17]

Answer:

Grasses: 12

Weeds: 29

Trees: 39

Step-by-step explanation:

Let G, W and T represent number of grasses, weeds, and trees that are major pollen sources.

We have been given that there are 80 major sources of pollen in state A. We can represent this information in an equation as:

$G+W+T=80...(1)$

We are told that the number of weeds is 7 less than thrice the number of grasses. We can represent this information in an equation as:

$W=3G-7...(2)$

We are also told that the number of trees is 3 more than thrice the number of grasses. We can represent this information in an equation as:

$T=3G+3...(3)$

Upon substituting equation (2) and equation (3) in equation (1), we will get:

$G+3G-7+3G+3=80$

$7G-4=80$

$7G-4+4=80+4$

$7G=84$

$\frac{7G}{7}=\frac{84}{7}$

$G=12$

Therefore, there are 12 grasses that are major pollen sources.

Number of weeds that are major pollen sources:

$W=3G-7\Rightarrow 3(12)-7=36-7=29$

Therefore, there are 29 weeds that are major pollen sources.

Number of trees that are major pollen sources:

$T=3G+3\Rightarrow 3(12)+3=36+3=39$

Therefore, there are 39 trees that are major pollen sources.

6 0

3 years ago

In class of 160 students, 90 are taking math, 78 are taking science, and 62 are taking both math and science. What is the probab

Sphinxa [80]

Hi!

All of the students that are ONLY taking math is 90.

That is 90/160 kids taking only math.

90/160 simplified = 9/16

The answer is 9/16

Hope this helps! :)

5 0

4 years ago

Select all the rectangles that have the same area, but are not congruent.

san4es73 [151]

Answer:

I don't know the answer if you know then tell me i also need the answer

4 0

3 years ago

Divide: 1,485 ÷ 0.09

ArbitrLikvidat [17]

16500 is ur lucky number

7 0

4 years ago

Read 2 more answers