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3 years ago

How far will a train moveing at 42 miles ph travel in 31/2 hours?

2 answers:

4 0

Answer:
147 miles

How??
Well, the train is travel for 3 and a half hours. So, you would multiply 42 by 3.5. Then, you get 147

PtichkaEL [24]3 years ago

3 0

Answer:

651 i think

Step-by-step explanation:

31/2 =15.5 so 15.5 times 42 = 651

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What is the exponent on 10 when you write 5.3 in scientific notation?

Mama L [17]

5.3x10 to the 0 power.

3 0

3 years ago

Amy works for 36 hours per week for 10 weeks during the summer, making $\$3000$. If she works for 30 weeks during the school yea

Zinaida [17]

Answer:

12 hours per week

Step-by-step explanation:

1. Find how many hours she worked to make $3,000 (36x10=360 hours)

2. divide 360 hours by 30 weeks

she would need to work 12 hours per week to make $3,000

6 0

3 years ago

Select ALL the correct answers.

stiv31 [10]

Answer:

Statements 3, 4 and 5 are true.

Step-by-step explanation:

x^2 - 8x + 4

Using the quadratic formula:

x = [ -(-8) +/- √((-8)^2 - 4*1*4)] / 2

= (8 +/- √(64 - 16)) / 2

= 4 +/- √48 / 2

= 4 +/- 4√3/2

= 4 +/- 2√3.

So the third statement is true.

Converting to vertex form:

x^2 - 8x + 4

= (x - 4)^2 - 16 + 4

= (x - 4)^2 -12

So the extreme value is at (4, -12)

So the fourth statement is true.

The coefficient of the term in x^2 is 1 (positive) so the graph has a minimum.

4 0

3 years ago

the hardwere store sold 7,389 boxes of nails last year. they aold 9,125 boxes of screws. how many more boxes of screws did they

Naily [24]

1,784 because 9,125 - 7,389 = 1,784

7 0

3 years ago

Read 2 more answers

The High Roller, a giant ferris wheel in Las Vagas, casts a 242-foot shadow. A 6’3” tall man standing nearby casts a 2 3/4-foot

Ira Lisetskai [31]

Answer:

550ft

Step-by-step explanation:

Simple napkin math, so you know what both shadows are you need to find how tall the High Roller is we will use X for this.

$\frac{242ft}{6'3"} x \frac{x}{2'9"}$

Im not 100% I set it up right but essentially 242 divided by 2'9" and that equals 88

Take 88 and multiply that by 6'3" and you get your Height for the High Roller

What I did their was I scaled the humans height to that of the High Roller dividing it gives you a number you can use to scale the height of that human to how it should scale to the High Roller, which is why I took 88 and multiplied it by the human's height.

Hope this helped :)

6 0

3 years ago