Evaluate cos 315º without using a calculator.
a
Plz help

Answer:

Hi! To find x (the missing angles of the triangles), remember that the angles in a triangle add up to 180 degrees. This means that for each triangle, you can add the two angles given, then subtract that number from 180 to find x. I'll use Triangle 1 as an example:

81 + 84 = 165

180 - 165 = 15

So for Triangle 1, x is equal to 15.

To classify each triangle by angles, remember that an acute triangle has three angles that each measure less than 90 degrees, a right triangle is a triangle with one 90 degree angle, and an obtuse triangle is a triangle with one angle that is greater than 90 degrees. To classify each triangle by sides, remember that scalene triangles have three sides of unequal length, isosceles triangles have two sides of equal length, and equilateral triangles have three sides of equal length.

Keeping all this in mind, here are your answers:

Triangle 1 - 15 acute scalene

Triangle 2 - 120 obtuse scalene

Triangle 3 - 41 right scalene

Triangle 4 - 104 obtuse isosceles

Triangle 5 - 25 right scalene

Triangle 6 - 64 acute scalene

Triangle 7 - 72 acute scalene

Triangle 8 - 32 obtuse scalene

Triangle 9 - 40 right scalene

I hope this helps you! Have a great day. - Mani :)

Answer:

So in 60 minutes it would travel 30 km.

Step-by-step explanation:

Distance travelled by the car=500 km. Total time taken=2 hrs.

Answer:

[tex]f(x) = \frac{x + 7}{6 - x} \\ \frac{3}{2} = \frac{x + 7}{6 - x} \\ 3(6 - x) = 2(x + 7) \\ 18 - 3x = 2x + 14 \\ - 3x - 2x = 14 - 18 \\ - 5x = - 4 \\ \frac{ - 5x}{ - 5} = \frac{ - 4}{ - 5} \\ x = \frac{4}{5} [/tex]

Answer try caculator soup it has so many diff calulators

Step-by-step explanation:

Answer:

120

Step-by-step explanation:

the pic was blury but the bigger rectangle seemed to be 10 by 8 so you multiply 10×8=80. the smaller rectangle is 5 by 8 so you multipy 5×8=40. then add 40+80=120

Answer:

120 sq cm

Step-by-step explanation:

Answer:

[tex]p = 4h[/tex]

Step-by-step explanation:

The equation of straight line is given by:

[tex]y = mx[/tex]

where, m is the slope or rate of the line.

As per the statement:

Wangari plants 12 trees every 3 hours.

By definition of unit rate:

Unit rate per hour [tex]= \frac{12}{3} = 4[/tex] trees

⇒[tex]m = 4[/tex]

We have to find an equation that relates the number of trees Wangari plants (p) and the time she spends planting them (h) in hours.

then;

[tex]p=4h[/tex]
where, p represents the plant trees and the time she spends planting them in h hours
Therefore, [tex]p=4h[/tex]   an equation that relates the number of trees Wangari plants (p) and the time she spends planting them (h) in hours.

Credit Answers to: OrethaWilkison

y = 12x + 5

- 12x + y = 5

gradient 1 = -a/b

= -(-12) / 1

= 12/1

= 12

gradient 2 × 12 = -1

Gradient 2 = -1/12

y - y1 = m (x - x1)

y - 5 = -1/12 ( x - (-2))

multiply all, by 12

12y - 60 = - 1 (x + 2 )

12y - 60 = -x - 2

x + 12y = - 2 + 60

x + 12y = 58

Answer:

See below.

Step-by-step explanation:

Whatever you divide/multiply the numerator by is what you have to divide/multiply the denominator by.

90/10=9

100/10=10

-hope it helps

Answer:

6.0

ooooooahahsidnehwkqsgudkebe

Answer:

11.7

Step-by-step explanation:

Hi, to calculate area of a shape; you have to do length multiplied by width. However this formula may vary when calculating different shapes like triangles etc.

Answer:

Picture C

Step-by-step explanation:

A major arc isn't a full circle eliminating picture a.

It is also bigger than 180º eliminating picture b and d.

leaving picture c which checks all the qualifications

Option(C) figure shows a major arc.

An arc is defined as a portion of the circumference of a circle.

An arc whose measure is greater than 180 degrees is called a major arc.

Hence, Option(C) figure shows a major arc.

Learn more about arc of circle

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Answer:

2352.32

Step-by-step explanation:

Sin 12 = 500/H

H = 2404.86717

Cos(12) = A/2404.86717

A = 2352.32

The horizontal distance it has traveled once it has reached an altitude of 500 feet is approximately 2352 feet.

The situation forms a right angle triangle

A right angle triangle has one of its angles as 90 degrees. The sides and angles can be found using trigonometric ratios.

The altitude of the plane is the opposite side.

The horizontal distance it travelled is the adjacent side of the triangle formed.

Therefore,

tan 12 = opposite / adjacent

tan 12 = 500 / a

a = 500 / tan 12

a = 500 / 0.2125565616

a = 2352.31573723

a = 2352 feet

learn more on right triangle here: https://brainly.com/question/14779430

Answer:

the dog weighs 52lb

Answer:

1. 5 child tickets

Step-by-step explanation:

So 2 adult tickets would be 24$

So we do 64-24=40. So each child tickets cost 8$

So we do 40/8=5

So for number 1 they can buy 5 child tickets.

The choice which isn't one of the steps in regression analysis is; Set boundaries or thresholds.

A Regression analysis is a statistical computation which involves:

Read more on regression analysis;

https://brainly.com/question/7781679

Answer:

[tex]\frac{500}{3}\pi[/tex]

Step-by-step explanation:

The equation for Volume of a Sphere is:

[tex]V=\frac{4}{3}\pi r^3[/tex]

We can plug in the given radius into the equation:

[tex]V=\frac{4}{3}\pi5^3=\frac{4}{3}\pi125=\frac{500}{3}\pi[/tex]

Answer:

3x + 15 it seems it would be graph 3

Step-by-step explanation:

f(x+5) = (x+5)3

= 3x + 15

Answer:

The bill was $218.40 before the tip

Step-by-step explanation:

The $260 is the amount with the tip, if 16% of the bill was the tip, we need to find what 100% - 16% of the bill is.

[] First, 100% - 16% is 84%

-> We need to find 84% of $260

[] Next, 84% can become 0.84

-> 260 * 0.84 = $218.40

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

Someone who likes to work alone on individualized projects has a Intrapersonal learning style.

Intrapersonal learners are those who prefer working alone.

Bodily learning style refers to practical or physical activities based learning, rather than lectures and theory.

Whereas musical learning is learning based on like memorizing by instrumental tones or learning with music in background etc.

Logical and mathematical learning is logic based learning.

And therefore, other options given doesn't fit the blank space, as we're asked the name of the person who likes working alone on individualized projects.

Thus, Someone who likes to work alone on individualized projects has a Intrapersonal learning style. (option B: Intrapersonal learning style)

Learn more about intrapersonal learning style here:

https://brainly.com/question/1235988

Answer:

Step-by-step explanation:Intrapersonal learners are those who prefer working alone.

Bodily learning style refers to practical or physical activities based learning, rather than lectures and theory.

Whereas musical learning is learning based on like memorizing by instrumental tones or learning with music in background etc.

Logical and mathematical learning is logic based learning.

And therefore, other options given doesn't fit the blank space, as we're asked the name of the person who likes working alone on individualized projects.

Thus, Someone who likes to work alone on individualized projects has a Intrapersonal learning style. (option B: Intrapersonal learning style)

Learn more about intrapersonal learning style here:

brainly.com/question/1235988

Answer:

here's your answer......

The number 3.84761 become 3.848 after round off to 3 decimal place or thousandths place.

Rounding is a technique to reduce a large number to a smaller, more approachable figure which is very similar to the actual. Rounding numbers can be achieved in a variety of ways.

We have a number:

= 3.84761

It is required to round off to 3 decimal place.

= 3.848  (0.0076 = 0.008)

Rounded to the nearest 0.001 or the Thousandths Place.

Thus, the number 3.84761 become 3.848 after round off to 3 decimal place or thousandths place.

Learn more about the rounding off number here:

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it's false because two lines cannot be horizontally parallel

Answer:

1.5+1=6

2.-0+7=7

Step-by-step explanation:

yung -x Po ay magiging zero

Answer:

13.7

Step-by-step explanation:

I did a test on this i got it correct

Answer:

4. metres (approx)

Step-by-step explanation:

The given situation can be illustrated as a picture which I have attached to the answer for better understanding.

As you can notice, the situation can be modeled as a right triangle.

Use the Pythagorean theorem to find the value of leg h, as follow:

[tex]h=\sqrt[]{(7.5m)^{2} - (6.2m)^{2}} \\h=\sqrt{56.25m^{2} - 38.44m^{2}}\\h=\sqrt{17.81m^{2} } \\h= 4.2 m[/tex]

Rounding of the answer :  4 meters

Hence, the height of the tree is approximately 4m.

Please mark me as brainliest if you found this helpful.

Answer:

Loan is increasing

Rate = 8% per year

Step-by-step explanation:

[tex]h(x) = 5000.(1.08) ^{x} \\ \\ \implies \: h(x) = 5000.(1 + 0.08) ^{x} \\ \\ \implies \: h(x) = 5000.(1 + 8 \%) ^{x} [/tex]

Since, rate of interest is positive, so loan in increasing.

Rate = 8 percent per year

The total cost to licence and purchase 500 songs is; $1850

The time it takes to do so is; 200 minutes

From the task content:

Total cost = $3.70

For 500 songs = 500 × $3.70 = $1850

The total time it takes to find the licencing information and to purchase the song is;

Total time = 4minutes

For 500 songs = 500 × 4 = 200minutes

Read more on cost and time;

https://brainly.com/question/1476828

Answer: Hence required probability = 0.004307

Step-by-step explanation:

Given an industrial machine has 0.12 defective rate and to find probability that fewer than 3 defective widgets run of 75 items,

⇒[tex]P(x < 3)=P(x=2)+P(x=1)+P(x=0)[/tex], since P(x=r)=[tex]_nc_r P^rq^n^-^r[/tex]

Here P=0.12, q=1-p, 1-0.12=0.88, n=75

the rest of the answer is explained in the photo below.

Answer:

B) No solution

Step-by-step explanation:

3x - 13 = 3(x-6)

3x - 13 = 3x - 18

-13 = -18

Since both sides are never equal to each other, there are no solutions