3 years ago

find two numbers that round to 15.5 when rounded to the nearest tenth. besides 15.04 15.55 15.508 15.445 15.0 15.49

Mathematics

1 answer:

Kitty [74]3 years ago

4 0

Two other numbers are 15.48 and 15.52

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Solve the equation sin theta = 0.3 to the nearest tenth. Use the restrictions 90degrees < theta < 180degrees.

Alexxandr [17]

We first do:
∅ = sin⁻¹(0.3)
∅ = 17.5°

To go into the second quadrant, we add 90°.
∅ = 17.5 + 90
= 107.5°
The answer is A.

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Find the equation of the circle with center at the origin and x-intercepts 12 and -12

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Sandra normally takes 2 hours to drive from her house to her grandparents' house driving her usual speed. However, on one partic

Rudiy27

Answer:

Her usual driving speed is 38 miles per hour.

Step-by-step explanation:

We know that:

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

In which s is the speed, in miles per hour, d is the distance, in miles, and t is the time, in hours.

We have that:

At speed s, she takes two hours to drive. So

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

$d = 2s$

However, on one particular trip, after 40% of the drive, she had to reduce her speed by 30 miles per hour, driving at this slower speed for the rest of the trip. This particular trip took her 228 minutes.

228 minutes is 3.8 hours. So

$0.4s + 0.6(s - 30) = \frac{d}{3.8}$

$3.8(0.4s + 0.6s - 18) = d$

$3.8s - 68.4 = 2s$

$1.8s = 68.4$

$s = 38$

Her usual driving speed is 38 miles per hour.

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3 years ago

PLS HELP ME I NEED ANSWER FAST

vaieri [72.5K]

Answer:

it is a.

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is 12 2/3 as an improper fraction

BaLLatris [955]

Answer:

$\dfrac{38}{3}$

Step-by-step explanation:

$12\dfrac{2}{3} =$

$= 12 + \dfrac{2}{3}$

$= \dfrac{12}{1} + \dfrac{2}{3}$

$= \dfrac{12}{1} \times \dfrac{3}{3} + \dfrac{2}{3}$

$= \dfrac{36}{3} + \dfrac{2}{3}$

$= \dfrac{38}{3}$

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3 years ago