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3 years ago

Expand and evaluate the power (1.6) ^2 A. 3.6 B. 3.2 C. 2.56 D. 0.8

Mathematics

2 answers:

Citrus2011 [14]3 years ago

5 0

2.56.-----really all you had to do was 1.6*(its self) 1.6 giving you 2.56 (C)----

bonufazy [111]3 years ago

3 0

1.6^2

It's telling you to multiply 1.6 by itself 2 times.

1.6 * 1.6 = 2.56

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Countering a cost $9.40 per sales tax. After sales tax, it cost $9.87. What is the sales tax rate?

Nady [450]

STEP 1:
find the sales tax (decimal form)

x= sales tax

Cost + (Cost * Sales Tax)= Total
plug in known numbers

$9.40 + ($9.40 * x)= $9.87

9.40 + 9.40x= 9.87
subtract 9.40 from both sides

9.40x= 0.47
divide both sides by 9.40

x= 0.47/9.40

x= 0.05 sales tax decimal form

STEP 2:
find sales tax percentage

= 0.05 * 100
or move decimal to the right two decimal places

= 5% sales tax percent form

ANSWER: The sales tax is 5% (or 0.05 in decimal form)

Hope this helps! :)

6 0

3 years ago

Read 2 more answers

The area of the rectangle is 5 times the triangle

nirvana33 [79]

Don't know what you mean

8 0

3 years ago

Solve 2x + 4 > 16<br><br> A. x > 10<br> B. x < 6<br> C. x < 10<br> D. x > 6

Salsk061 [2.6K]

Hey there! :)

2x + 4 > 16

We're simply just trying to get x onto it's own side, so let's get rid of any numbers on the same side of it.

We can start out by subtracting both sides by 4.

2x + 4 - 4 > 16 - 4

Simplify.

2x > 12

Then, divide both sides by 2.

2x ÷ 2 > 12 ÷ 2

Simplify.

x > 6

Therefore, our answer is D. x > 6

~Hope I helped!~

6 0

3 years ago

A polynomial is to be constructed that will touch the x axis at most 5 times. What is the minimum degree of the polynomial?

bonufazy [111]

Touch the x axis means the zeroes (y=0) of theh equation aka the roots aka the solutions
ok, so remember that the degree of the polynomial will be the maximum number of roots so therefor
minimum degreee is 5th degree

8 0

3 years ago

Jason and Britton are driving to St. George. Jason got a 20 mile head start and drove an

harina [27]

Answer:

2 hours, 150 miles

Step-by-step explanation:

The relation between time, speed, and distance can be used to solve this problem. It can work well to consider just the distance between the drivers, and the speed at which that is changing.

<h3>Separation distance</h3>

Jason got a head start of 20 miles, so that is the initial separation between the two drivers.

<h3>Closure speed</h3>

Jason is driving 10 mph faster than Britton, so is closing the initial separation gap at that rate.

<h3>Closure time</h3>

The relevant relation is ...

time = distance/speed

Then the time it takes to reduce the separation distance to zero is ...

closure time = separation distance / closure speed = 20 mi / (10 mi/h)

closure time = 2 h

Britton will catch up to Jason after 2 hours. In that time, Britton will have driven (2 h)(75 mi/h) = 150 miles.

<em>Additional comment</em>

The attached graph shows the distance driven as a function of time from when Britton started. The distances will be equal after 2 hours, meaning the drivers are in the same place, 150 miles from their starting spot.

3 0

1 year ago