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4 years ago

Please help ! Desperate here ! Evaluate the expression : 2{5[12+5(500-100)+399]}

Mathematics

1 answer:

-Dominant- [34]4 years ago

3 0

Answer:

hope this will help

Step-by-step explanation:

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Suzannah made 7 bows. How many feet of ribbon did she use?

ella [17]

Answer:

420

Step-by-step explanation:

5 0

3 years ago

In each of the following ,make y the subject and hence find the value of y when a=2, b=3 ,and c=4.

zvonat [6]

Part i

$\dfrac{2a-7}{6y} = \dfrac{3b-5}{2c}$

$y = \dfrac{ 2c(2a-7)}{6(3b-5)} = \dfrac{c(2a-7)}{9b-15}$

Substituting,

$y = \dfrac{4(2(2)-7)}{9(3)-15} = \dfrac{ -12}{12} = -1$

Answer: -1

Part ii

I'm not sure that one's typed in correctly but I'll solve it as written.

$3-34y + 2a = \dfrac{3b-5}{2c + 1}$

$34y = 3+2a-\dfrac{3b-5}{2c + 1}$

$y = \frac 1 {34}\left(3+2a-\dfrac{3b-5}{2c + 1} \right)$

We're not asked to simplify it so I wont. Substituting,

$y = \frac 1 {34}\left(3+2(2)-\dfrac{3(3)-5}{2(4) + 1} \right) = \frac 1 {34}(7-4/9) = \dfrac{59}{306}$

Answer: 59/306

3 0

4 years ago

Find the length of the missing side.<br> Please help!

BigorU [14]

Answer:

Step-by-step explanation:

a2+b2=c2

4 0

3 years ago

Plz help Exploring Modeling Percents Select features that you want on the grid. Then click on the grid where you would like to p

Flura [38]

Answer:

I can't understand the picture...

Step-by-step explanation:

Sorry...

3 0

3 years ago

Jaden drove 200 miles in 4 hours. At this speed, how long with it take him to drive 300 miles? How long will it take him to driv

Kisachek [45]

Answer:

10 hours to drive 500 miles

6 hours to drive 300 miles

Step-by-step explanation:

Hi, to answer this we have to calculate the speed rate first:

Speed = distance /time

Speed = 200 miles / 4 hours = 50 miles per hour

So, to find the time for each number of miles:

Time = distance /speed

For 500 miles:

t = 500/50 = 10 hours

For 300 miles

t = 300/50 =6 hours

So, in conclusion:

It will take 10 hours to him drive 500 miles

It will take 6 hours to him drive 300 miles

7 0

3 years ago

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