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3 years ago

Question 2 of 6

Mathematics

2 answers:

Kitty [74]3 years ago

6 0

Answer:

you fist have to gather your resources

alex41 [277]3 years ago

5 0

Answer:

i guess D

because it is most important to understand the problem before going to any further step or conclusions.

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expand and simplify (x + 2)(x + 5)

kherson [118]

I believe the answer is x² + 3x - 10.

I found this on Yahoo Answers so it isn't my own work.

3 0

3 years ago

Will give Brainliest Answer/ 5 stars for correct answer

solong [7]

u - v = <6 - 1, -9 - (-4)> = <5, -5> . . . . . . . matches selection A)

_____

The sum or difference of vectors is simply the sum or difference of corresponding coordinates.

8 0

3 years ago

The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at

tia_tia [17]

We are given:

The time t required to drive a certain distance varies inversely with the speed r.

According to the question t is inversely proportional to speed(r).

let us say distance (d) is constant of proportionality,

So the equation becomes,

$t=\frac{d}{r}$

Now from the question, we are given it takes 2 hours to drive the distance at 67 miles per hour, so plugging these in the above equation,

$2=\frac{d}{67}$

d=134 miles.

Now we have to find how long will it take to drive the same distance that is 134 miles at 55 miles per hour

so plugging the values, we have,

$t=\frac{134}{55}$

t=2.436

So the time taken will be around 2.5 hours.

Answer : It will take about 2.5 hours to drive the same distance at 55 miles per hour. Option C. About 2.5 hours.

5 0

3 years ago

Read 2 more answers

What's the law of indices

Nastasia [14]

Answer:

Indices are used to show numbers that have been multiplied by themselves. They can also be used to represent roots, such as the square root, and some fractions. The laws of indices enable expressions involving powers to be manipulated more efficiently than writing them out in full.

8 0

3 years ago

Read 2 more answers

In a random sample of 12 residents of the state of Montana, the mean waste recycled per person per day was 1.0 pounds with a sta

EastWind [94]

Answer:

The 95% confidence interval for the mean waste recycled per person per day for the population of Montana.

(0.58701 , 1.41299)

Step-by-step explanation:

Step:-1

Given that the size of the sample 'n' =12

Given that mean of the sample x⁻ = 1.0 pounds

Given that the standard deviation of the sample (S) = 0.65 pounds

Step:- 2

The 95% confidence interval for the mean waste recycled per person per day for the population of Montana.

$(x^{-} - t_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + t_{0.05} \frac{S.D}{\sqrt{n} } )$

$(1.0 - 2.2010 \frac{0.65}{\sqrt{12} } , 1.0 + 2.2010 \frac{0.65}{\sqrt{12} } )$

(1.0 - 0.41299 , 1.0 + 0.41299)

(0.58701 , 1.41299)

Final answer:-

The 95% confidence interval for the mean waste recycled per person per day for the population of Montana.

(0.58701 , 1.41299)

5 0

3 years ago