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2 years ago

Please help me if you know!! Thank you so much!!

Mathematics

2 answers:

In-s [12.5K]2 years ago

4 0

federalism is defined as a central government sharing power with smaller leaders. in today's world, we see a lot of this with our president communicating with state leaders and vice versa. they are working together to determine the best moves to keep us safe during this pandemic.

Rus_ich [418]2 years ago

3 0

Answer:

The Chinese act

Step-by-step explanation:

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Katie is twice as old as her sister Mara. The sum of their ages is 24. Find their ages.

Alenkasestr [34]

So k=katie's' age
m=mara's age

k is 2 times as old as m
k=2m

sum is 24
add means sum
k+m=24

so we have
k+m=24 and
k=2m
subsitute
2m+m=24
add
3m=24
divide both sides by 3
m=8
subsitute again
k=2m
k=2(8)
k=16

katie=16
mara=8

4 0

3 years ago

Two Identical Buildings stand parallel on opposite sides of a road. Find the angle of depression from A to B

Aleks04 [339]

Answer:

8.7°

Step-by-step explanation:

The above problem can be represented by a right angled triangle with height of 7 m, hypotenuse = AB.

The base of the triangle is gotten by finding the diagonal of the road. That is using Pythagoras theorem:

base² = 43² + 15²

base² = 2074

base = 45.54 m

Using trigonometric function to find angle A:

tan(A) = base / height

tan(A) = 45.54 / 7

tan(A) = 6.506

A = tan⁻¹ (6.506)

A = 81.3°

Angle of depression = 90° - A = 90 - 81.3

Angle of depression = = 8.7°

6 0

2 years ago

Here is a better picture

Sonja [21]

Answer:all

Step-by-step explanation:so because u have done all

3 0

2 years ago

Number 10Please just show the math and not the sentence explanations, I just want to use this problem as an example :)

Morgarella [4.7K]

Explanation

We are given the following right-angled triangle:

We are required to determine the indicated angle in the given figure.

This is achieved thus:

According to the image, we have:

$\begin{gathered} Opposite=9 \\ Adjacent=21 \end{gathered}$

Therefore, we have:

$\begin{gathered} \tan\theta=\frac{opposite}{adjacent} \\ \tan\theta=\frac{9}{21} \\ \theta=\tan^{-1}(\frac{9}{21}) \\ \theta\approx23\degree \end{gathered}$

Hence, the answer is:

$23\degree$

4 0

1 year ago

If (x+1,10)=(4,2y) then find the value of x & y

lawyer [7]

Answer:

Step-by-step explanation:

<h3>Given, </h3>

(x+1, 10) = (4, 2y)

First x coordinate, 

x + 1 = 4

=> x = 4 - 1

=> x = 3 (Ans) (i)

Second y coordinate, 

10 = 2y

$= > y = \frac{10}{2}$

=> y = 5 (Ans) (ii)

3 0

3 years ago