1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jekas [21]
4 years ago
9

10. Use a sum or difference identity to find the exact value of cos (-30°). 5 points

Mathematics
1 answer:
amid [387]4 years ago
6 0

Answer:

it's 10

Step-by-step explanation:

You might be interested in
Can y’all give me the area of each figure
KIM [24]

Answer:

1. 208 in^2

Step-by-step explanation:

1. We can break the shape up into a rectangle in the middle and 2 triangles on either side of said rectangle.

The dimensions of the rectangle are 8 in by 20 in, and we only know one leg of the triangle as well as the hypotenuse.

If we know one leg and the hypotenuse we can use the pythagorean theormed to sovle for the other side and get 6 in.

So we have

(8 * 20) + 2((1/2)(6)(8))

160 + 48

208 in^2

5 0
3 years ago
Sanam eats 5 almonds daily. How many almonds does she eat in 157 days?​
Ede4ka [16]

Answer:

785 almonds

Step-by-step explanation:

157 x 5 = 785

8 0
3 years ago
What's the surface area ?
Morgarella [4.7K]

Answer:

ans = 112

Step-by-step explanation:

Hope it will help

please mark as brainlists

3 0
3 years ago
There are 9 shipping boxes and each of these boxes has 19 shoe boxes, and each shoe box has 2 shoes. Which of the following is a
Reptile [31]
2 shoes in each box * 19 shoe boxes = 38 shoes

38 shoes * 9 shipping boxes would be 342 shoes in all

A good estimate would be around 342. Hope that helps
4 0
3 years ago
Read 2 more answers
A plant manufactures part whose lengths are normally distributed with a mean of 16.3 centimeters and a standard deviation of 2.5
EastWind [94]

The probability that the plant manufactures a part between 10.8 and 12.8 centimeters 13%

<h3>How to find the probability that the part is between 10.8 and 12.8 centimeters</h3>

The probability is solved z scores, this measures the amount of standard deviation sample X is from mean. the formula is below

z = (X - μ) / σ

<u>Definition of variables</u>

mean, μ = 16.3 centimeters

standard deviation, σ = 2.5 centimeters

X = 10.8 and 12.8 centimeters

z score, z

substituting into the formula

for X = 12.8 centimeters

=  (X - μ) / σ

= (12.8 - 16.3) / 2.5

= -1.4

the p value for z of -1.4 = 0.161513

for X = 10.8 centimeters

=  (X - μ) / σ

= (10.8 - 16.3) / 2.5

= -2.2

the p value for z of -2.2 = 0.027807

the probability is calculated as below

0.161513 - 0.027807= 0.133706

= 0.13

=13%

Learn more about standard deviation at:

brainly.com/question/28948351

#SPJ1

8 0
2 years ago
Other questions:
  • Brenda has $30. She gets $5 every time she takes out the trash. Which inequality can be used to find x, the number of times Bren
    11·1 answer
  • Help please guys I need help with this question I'm stuck
    11·1 answer
  • Bigger flags are used at the start of a race. How many
    10·2 answers
  • How to solve? The answer needs to be rounded to the nearest tenth
    8·2 answers
  • A bag of marbles can be divided evenly among 2,3 or 4 friends. A) How many marbles might be in the bag? B) What is the least num
    7·1 answer
  • What is -7 -3 2/3 as a mixed number
    14·1 answer
  • 1.what is $0.66 as a fraction 2.what is $1.08 as a fraction 3.what is $1.21 as fraction
    9·2 answers
  • Find the total surface area of this square based pyramid. 10ft 10ft (in the image)​
    8·1 answer
  • The length of the sides of a triangle are in the ratio 3:5:7. The difference between the longest side and the shortest side is 2
    10·1 answer
  • 0.3 of what number is 36
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!