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4 years ago

Send help pls, idk how to answer this

Mathematics

1 answer:

Ronch [10]4 years ago

5 0

Use the law of cosines. Let $x$ be the distance you want to find (between Alnitak and Mintaka). Then

$x^2=736^2+915^2-2(736)(915)\cos3^\circ$

$\implies x\approx184\,\mathrm{ly}$

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On Tuesday Emily bought nine hats. on Wednesday half of all the hats that she had were destroyed. on Thursday there were only 24

umka21 [38]

Answer:

33 i think

Step-by-step explanation:

sorry im not that smart but i did the math so it should be 33

3 0

3 years ago

Which statements are correct? Check all that apply. The total number of students is < 160. The total number of students is &g

dusya [7]

Answer:

The percent as a part to whole ratio is Start Fraction 10 over 100 end fraction

The percent as a part to whole ratio is start fraction 160 over 100 end fraction.

There are 250 students in the school

Step-by-step explanation:

In the Juniour park school there are 160 students and out of these only 10 percent students play musical instruments. The fraction are start with 10 and end 100 is the correct. The ration of the students playing the musical instruments is 10 percents.

3 0

3 years ago

Read 2 more answers

Mary went up the Old Tower taking 3 steps per second. Then she carefully came down from the tower taking 2 steps per second. It

Inessa [10]

Answer:

old town has 150 steps

Step-by-step explanation:

Let the number of steps in the old tower be m

Mathematically, time = distance/speed

In this case, the distance is the number of steps while the speed is the rate of climbing or descending

For climbing, time spent = m/3

For descending time spent = m/2

Since it took her 25 longer when descending;

This means that;

m/2 - m/3 = 25

(3m-2m)/6 = 25

m/6 = 25

m = 6 * 25

m = 150 steps

8 0

3 years ago

Which statement correctly describes the relationship between the lengths of the sides of the triangle shown below?

Vanyuwa [196]

Answer:

Step-by-step explanation:

Trust me I got it right and you should too

7 0

4 years ago

Read 2 more answers

Two boats leave the same place at the same time. The first boat heads due north at 10 kilometers per hour. The second boat heads

Maksim231197 [3]

Answer:

18.87 km/hr

Step-by-step explanation:

First boat is heading North with a speed of 10 km/hr.

Second boat is heading West with a speed of 16 km/hr.

Time for which they move = 2.5 hours

To find:

The speed at which the distance is increasing between the two boats.

Solution:

Let the situation be represented by the attached diagram.

Their initial position is represented by point O from where they move towards point A and point B respectively.

$Distance = Speed \times Time$

$Distance\ OA = 10 \times 2.5 = 25\ km$

$Distance\ OB = 16 \times 2.5 = 40\ km$

We can use Pythagorean Theorem to find the distance AB.

AB is the hypotenuse of the right angled $\triangle AOB$ .

According to Pythagorean theorem:

$\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow AB^{2} = OA^{2} + OB^{2}\\\Rightarrow AB^2 = 25^2 + 40^2\\\Rightarrow AB^2 = 2225^2\\\Rightarrow AB^2 \approx 47.17\ km$

The speed at which distance is increasing between the two boats is given as:

$\dfrac{47.17}{2.5} \approx 18.87\ km/hr$

4 0

3 years ago