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
Free_Kalibri [48]
3 years ago
13

PLEASE HELP!! DESPERATE!

Mathematics
1 answer:
avanturin [10]3 years ago
7 0

Answer:

Lenght: 34.51 mm

Area: 1035.33 mm^2

Step-by-step explanation:

let x be the unknown sidelength

tan(41) = 30/x

x = 34.51

multiply by 30 to get area

You might be interested in
an omline newspaper had 350080 visitors in october 350489 visitors in november,and 305939 visitors in december.what is the order
Sauron [17]
December October November
7 0
3 years ago
Read 2 more answers
Solve the following <br><br><br> C^2-14=5c
kipiarov [429]

Answer:

c = - 2, c = 7

Step-by-step explanation:

Given

c² - 14 = 5c ( subtract 5c from both sides )

c² - 5c - 14 = 0 ← in standard form

To factorise the quadratic

Consider the factors of the constant term (- 14) which sum to give the coefficient of the c- term (- 5)

The factors are - 7 and + 2, since

- 7 × 2 = - 14 and - 7 + 2 = - 5, hence

(c - 7)(c + 2) = 0

Equate each factor to zero and solve for c

c - 7 = 0 ⇒ c = 7

c + 2 = 0 ⇒ c = - 2

8 0
3 years ago
On Sunday, Brendan and Denny can sometimes talk Will into helping them with the deliveries. His delivery rate is 8 papers every
kondaur [170]
56 minutes

it should be right
8 0
3 years ago
The human lung has about 80 million alveoli. Give two features of the alveoli that allow large amounts of oxygen to enter the bl
I am Lyosha [343]

Answer:

Alveoli forms the respiratory surface in human body.Each alveolus is sac like structure bounded by a single layer of epithelial cells.It is bound on the outside by a network of capillaries. The pulmonary artery from the heart containing deoxygenated blood enters the lungs and then becomes oxygenated after passing in the capillaries through the lungs.

6 0
3 years ago
In Pennsylvania the average IQ score is 101.5 The variable is normally distributed and the population standard deviation is know
elena-14-01-66 [18.8K]

Answer:

P-value = 0.0368

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, \bar{x} = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

H_{0}: \mu = 101.5\\H_A: \mu> 101.5

We use One-tailed(right) z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{106.4 - 101.5}{\frac{15}{\sqrt{30}} } = 1.789

Now, z_{critical} \text{ at 0.05 level of significance } = 1.64

Since,  

z_{stat} > z_{critical}

We reject the null hypothesis and accept the alternate hypothesis. Thus, students in Pennsylvania have an IQ that is significantly greater than the state average.

P-value can be calculated with the standard normal table.

P-value = 0.0368

P-value is lower than the significance level.

4 0
3 years ago
Other questions:
  • On a Friday evening a pizza shop had orders for 4 pepperoni, 97, and 335 cheese pizzas. If the 4 cooks each made an equal number
    6·2 answers
  • What is the value of E?
    8·2 answers
  • What is the LCM of 10 and 14
    10·2 answers
  • Wilson has a balance of $890 on a credit card with an apr of 18.7%, compounded monthly. about how much will he save in interest
    7·2 answers
  • Louise used this figure to model the expression 20 divided by 4.
    12·2 answers
  • A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan
    6·1 answer
  • Helps pls help pls thank you so much
    6·1 answer
  • Based on the information in the diagram, what is the length of side b?
    10·1 answer
  • What is the area of 4.8cm
    9·1 answer
  • 10x + 8 = 3(x – 2)<br> 10x + 8 = 3x
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!