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2 years ago

9x10^2 which sentence matches the question assigned

Mathematics

1 answer:

Serga [27]2 years ago

5 0

The computation of the index shows that the value of 9 × 10² will be 900.

<h3>How to calculate the indices?</h3>

From the information given, we are told to calculate the value of 9 × 10². This will be calculated thus:

= 9 × 10²

Note that 10² simply means that you've to multiply 10 twice. This will be:

= 10 × 10 = 100

Therefore, 9 × 10² will be:

= 9 × 100

= 900

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Problem

Stels [109]

Answer:

The maximum speed of Hal's airplane in still air is:

$v= 250\ miles/h$

The speed of the wind

$c = 50\ miles/h$

Step-by-step explanation:

Remember that the velocity v equals the distance d between time t.

$v=\frac{d}{t}$ and $t*v=d$

The distance that Hal travels when traveling with the wind is:

$(2\ hours)(v + c) = 600$ miles

Where v is the speed of Hal and c is the wind speed.

The distance when traveling against the wind is:

$(3\ hours)(v-c) = 600$ miles

Now we solve the first equation for v

$(2)(v + c) = 600$

$2v + 2c = 600$

$2v= 600-2c$

$v= 300-c$

Now we substitute the value of v in the second equation and solve for c

$3((300-c)-c) = 600$

$3(300-2c) = 600$

$900-6c = 600$

$-6c = 600-900$

$-6c = -300$

$6c = 300$

$c = 50\ miles/h$

Then:

$v= 300-(50)$

$v= 250\ miles/h$

The maximum speed of Hal's airplane in still air is:

$v= 250\ miles/h$

The speed of the wind

$c = 50\ miles/h$

7 0

3 years ago

James earned $334 for working a 40-hour week how much will he earn in a week in which he works only 32 hours

atroni [7]

$267.20

Divide $334 by 40 for hourly rate then multiply by 32

earnings = $\frac{334}{40}$ × 32 = $267.20

4 0

2 years ago

What is the check digit(d) for the UPC bar code <br> 7-25272-73070-d<br> A)8<br> B)3<br> C)4<br> D)2

vovangra [49]

B I hope this help I think it’s right

4 0

2 years ago

Find 165.1% of 333.Round to the nearest hundredth.

inysia [295]

Answer:

We get that the 165.1% of 333 is 333 • 1.651 = 549.78

Step-by-step explanation:

1. They are asking for the 165.41%

2. So, we need to multiply 333 by the representation of 165.1% in decimal by doing the multiplication using a calculator

6 0

3 years ago

The new TV costs $350. The family saved up $210 in September. In October they saved up $140. Do they have enough for the new TV

bija089 [108]

Answer:

yes

Step-by-step explanation:

210 + 140 is 350 give me brain and thanks

5 0

3 years ago