Ask question

Ask question

All categories

3 years ago

13

I need 100 topics done on aleks can someone help me it's worth a grade I'll give u my number so I can give u the info pls any ta

kers

1 answer:

Troyanec [42]3 years ago

4 0

Decimals fractions power of 10 customary metric liquid volume

You might be interested in

A field is 53 1/3 yards wide. What is the width of the field in feet?

Umnica [9.8K]

Answer: The width of the field = 160 feet

Step-by-step explanation:

We are given that , A field is $53\dfrac{1}{3}$ yards wide.

That means , The width of the field = $53\dfrac{1}{3}$ yards

Since , the fraction is in mixed for , so first we convert this into improper fraction.

$53\dfrac{1}{3}=\dfrac{3(53)+1}{3}=\dfrac{160}{3}$

Therefore , the width of the field = $\dfrac{160}{3}$ yards

Since 1 yard = 3 feet.

⇒ the width of the field = $\dfrac{160}{3}\times3$ feet

Therefore , the width of the field = 160 feet

5 0

3 years ago

A girl starts to walk to her school, which is 20 miles away, at 6:50 and at a rate of 3 miles per hour. After a while, her dad p

Alexeev081 [22]

The girl walked a distance of $\boxed{{\mathbf{5 miles}}}$ in her way.

Further explanation:

The time can be calculated as,

${\text{ time}}=\frac{{{\text{distance}}}}{{{\text{speed}}}}$

Given:

It is given that a girl stands 20 miles away from the school at $6:50{\text{ am}}$ and she started walking at the rate of $3{\text{ mi/hr}}$ and then after some time her dad pick up and he drives at the rate of $30{\text{ mi/hr}}$ . They reach the school at $9:00{\text{ am}}$ .

Step by step explanation:

Step 1:

Consider $x$ as the distance she walked in her way.

The speed of the girl when she walked is $3{\text{ mi/hr}}$ .

Now use the formula of time to obtain the walk time.

$\begin{gathered}{\text{ walktime}}=\frac{{{\text{distance walked}}}}{{{\text{walking speed}}}}\hfill\\{\text{ walktime}}=\frac{x}{3}\hfill\\\end{gathered}$

Since the total distance is $20{\text{ miles}}$ .

Then consider $20-x$ as the distance driven by the car.

The driving speed is $30{\text{ mi/hr}}$ .

Now use the formula of time to obtain the drive time.

$\begin{gathered}{\text{drive time}}=\frac{{{\text{distance travelled by car }}}}{{{\text{ speed of car}}}}\hfill\\{\text{drive time}}=\frac{{20-x}}{{30}} \hfill\\\end{gathered}$

Step 2:

Now we calculate the total time took by girl to reach the school.

$9:00-6:50={\text{2 hrs 10 min}}$

Now convert the timing into hours as,

$\begin{aligned}2{\text{ hours 10 minutes}}&=2+\frac{{10}}{{60}}\\&=2\frac{1}{6}\\&=\frac{{13}}{6}{\text{ hrs}}\\\end{aligned}$

Step 3:

Total time is the sum of drive time and walk time.

The total time can be expressed as,

$\frac{x}{3}+\frac{{20-x}}{{30}}=\frac{{13}}{6}$

Now solve the above equation by cross multiply method.

$\begin{aligned}\frac{x}{3}+\frac{{20-x}}{{30}}&=\frac{{13}}{6}\hfill\\\frac{{10x+20-x}}{{30}}&=\frac{{13}}{6}\hfill\\\frac{{9x+20}}{{30}}&=\frac{{13}}{6}\hfill\\6\left({9x+20}\right)&=13\left({30}\right)\hfill\\\end{aligned}$

Now simplify the further equation.

$\begin{aligned}6\left({9x+20}\right)&=13\left({30}\right)\hfill\\54x+120&=390\hfill\\54x&=390-120\hfill\\54x&=270\hfill\\\end{aligned}$

Simplify the further equation.

$\begin{aligned}54x&=270\hfill\\x&=\frac{{270}}{{54}}\hfill\\x&=\frac{{45}}{9}\hfill\\x&=5\hfill\\\end{gathered}$

Therefore, the girl walked 5 miles.

Learn more:

Learn more about the distance between the points <u>brainly.com/question/6278187 </u>

Learn more about the equivalent fraction <u>brainly.com/question/952259 </u>

Learn more about midpoint of the segment <u>brainly.com/question/3269852 </u>

Answer details:

Grade: High school

Subject: Mathematics

Chapter: Speed, distance and time

Keywords: girl, distance, drive, walk, drive time, dad, speed, travelled, formula, cross multiply, fraction, number, multiply, addition, subtraction, equation, school

8 0

4 years ago

Read 2 more answers

Un estudiante se propone, el primer día resolver dos problemas de RM, el segundo día el doble del día anterior, el tercer día el

pav-90 [236]

??? I don’t understand the question I don’t speak Spanish

5 0

3 years ago

Please explain all three questions

taurus [48]

Answer:

1) Standardization

2). 1:1.25

3) 4cm

Step-by-step explanation:

The manipulation of scale variables to ensure comparability with other scales and enable comparisons to be made.

1:x = 9.6:12

x= 1: 1.25

9.6/12 = AC/5

AC= (5*9.6)/12

AC= 48/12

AC= 4cm

3 0

3 years ago

Hey guys, hope your day is going well, can you plz help me with is question thank you, i will give 10 pts.

tankabanditka [31]

theres not picture so like i cant help u with that

5 0

3 years ago