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3 years ago

9

Which of the following is a unit rate?

2 answers:

Artist 52 [7]3 years ago

8 0

Third option is prob right !

Snezhnost [94]3 years ago

4 0

Answer:

The third option (foot/1 hour)

Step-by-step explanation:

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Find the exact solution of x <br> 3x^2+7=28<br> A.+√7<br> B.7<br> C.+7<br> D.-7

yulyashka [42]

Answer:

x = ± $\sqrt{7}$

Step-by-step explanation:

3x² + 7 = 28 ( subtract 7 from both sides )

3x² = 21 ( divide both sides by 3 )

x² = 7 ( take square root of both sides )

x = ± $\sqrt{7}$

that is x = - $\sqrt{7}$ , x = $\sqrt{7}$

3 0

2 years ago

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A large company is expanding its workforce and needs to hire some new administrative assistants. They found the relationship bet

Inessa [10]

The graph on #6 describes a scatterplot. Because years of experience is the input, this makes the starting salary our output. Finding the best fitting line in a scatterplot requires the line to follow a trajectory similar to that of the points. As a result, there will be outliers. Since I don't know what "the calculator" is meant by this problem, I have used a different program. I hope it works for you. Good luck.

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3 years ago

a group raised $276 for its favorite charity. this is 23% of the amount it hopes to raise. how much money does the group want to

OverLord2011 [107]

Answer: The group wants to raise $1,200.

Step-by-step explanation:

We can use a proportion to solve.

part/whole = percent/100

If we insert the values:

276/x = 23/100

We can cross multiply.

276 x 100 = 27,600

27,600 / 23 = 1,200

$1,200 is the answer.

6 0

2 years ago

Y=4x+7 ordered pairs

andreyandreev [35.5K]

Well here are 3

(0,7);(1,11);(2,15)

4(0) + 7 y:7

You can keep doing it choose a number for x that's and for y multiply 4 times the numer you choosed for x and add 7 to it

7 0

3 years ago

Read 2 more answers

A particle moves along the x-axis so that at any time t, t ≥ 0, its acceleration is a(t) = -4sin(2t). If the velocity of the par

sasho [114]

The velocity of the particle is given by

$v(t)=v(0)+\displaystyle\int_0^ta(u)\,\mathrm du$

Since $a(t)=-4\sin2t$ and $v(0)=7$ , we get

$\displaystyle\int_0^ta(u)\,\mathrm du=\int_0^t-4\sin2u\,\mathrm du=2\cos2u\bigg|_0^t=2\cos2t-2$

$\implies v(t)=2\cos2t+5$

Similarly, the position function is obtained via

$x(t)=x(0)+\displaystyle\int_0^tv(u)\,\mathrm du$

We know $v(t)$ and we're told that $x(0)=0$ , so

$\displaystyle\int_0^tv(u)\,\mathrm du=\int_0^t(2\cos2u+5)\,\mathrm du=\sin2u+5u\bigg|_0^t=\sin2t+5t$

$\implies x(t)=\sin2t+5t$

making the answer A.

3 0

3 years ago