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2 years ago

By increasing speed of car by 10km/hr the time for journey of distance 72km/hr is reduced by 36mins.find original speed of car

Mathematics

1 answer:

Eduardwww [97]2 years ago

3 0

Answer:

idk

Step-by-step explanation:

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The problem for my last question. Plz answer!

Svetlanka [38]

Answer:

Find the difference between 4.5 and 40 which is 35.5 then divided that by 100 since you want the percent and that equals 0.35 which is 35%

4 0

2 years ago

The distance time graph represents a journey made by Joe what did you do at 10 minute at what speed was Joe moving for the last

Nikolay [14]

Answer:

a)At 10min= Jo arrived at the destination and prepare to return.

b)8km/h

Step-by-step explanation:

speed = distance/time 30/3.75=8

Hope this helps

7 0

2 years ago

Jada, Lin, and Elena are saving money for a trip. Together they saved $120. Jada saved $20 less than Lin. Lin saved 3 times as m

defon

Step-by-step explanation:

This is a word problem that we must translate to mathematical expression before we can solve.

let the individual saving be the first letters of the names

Jada= J

Lin= L

Elena= E

1. Jada saved $20 less than Lin

J=L-20

2. Lin saved 3 times as much money as Elena

L= 3E

3. Hence Elena saved

Together they saved $120.

hence

(L-20)+3E+E= 120

L-20+3E+E= 120

collecting like terms we hav

L+4E=120+20

L+4E= 140

but we know that L= 3E

3E+4E= 140

7E= 140

divide both sides by 7 we have

E= 140/7

E= $20

This means Elena saves $70

also L= 3E

L= 3*20

L= $60

this means that Lean saved $60

also J=L-20

J= 60-20

J= $40

This means that Jada saved $40

6 0

2 years ago

Erin and Ethan add fractions 2 1/3 and 1 1/2

stiks02 [169]

Answer:

32/5

Step-by-step explanation:

8 0

3 years ago

Rachel is collecting donations for the local animal shelter. So far she has collected $245, which is 70% of what she hopes to co

Nata [24]

Answer:

The money Rachael plan to collect for the shelter is <u>$350</u>.

Step-by-step explanation:

Given:

Rachel is collecting donations for the local animal shelter.

So far she has collected $245, which is 70% of what she hopes to collect.

Now, to find the money Rachael plan to collect for the shelter.

Let the total amount Rachael plan to collect be $x$ .

Amount she collected = $245.

Percentage of amount she collected = 70%.

Now, to get the amount Rachael plan to collect we put an equation:

$70\%\ of\ x=\$245.$

⇒ $\frac{70}{100} \times x=245$

⇒ $0.70\times x=245$

⇒ $0.70x=245$

<em>Dividing both sides by 0.70 we get:</em>

⇒ $x=\$350.$

Therefore, the money Rachael plan to collect for the shelter is $350.

4 0

3 years ago