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
rusak2 [61]
3 years ago
11

Someone answer the whole thing fast plz

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
6 0

Answer:

y = 2x + 54

Step-by-step explanation:

slope of equation:

(y2-y1)/(x2-x1)

= (72-58)/(9-2)

= 14/7

= 2

y = 2x + b

58 = 2(2) + b

58 = 4 + b

b = 54

You might be interested in
A flying carpet flies 2.4 miles with the wind in the same amount of time it flies 1.4 miles against the wind. The wind speed is
Ainat [17]

Answer:

15.2~mph

Step-by-step explanation:

Let the time flown by the flying carpet be t. Then, we have that (2.4)/t=(1.4)/t+2*4.

We multiply both sides of the equation by t to get 2.4=1.4+8t.

We subtract 1.4 from both sides to get 1=8t.

We divide both sides of the equation by t=1/8.

We know that the speed of the flying carpet in still wind is the average of the rates of the speed of the flying carpet with the wind and against the wind.

The speed with wind is (2.4)/(1/8)=19.2mph.

The speed against wind is (1.4)/(1/8)=11.2mph.

The speed in still wind is (19.2+11.2)/2=(30.4)/2=15.2.

Therefore, the answer is \boxed{15.2~mph} and we're done!

4 0
3 years ago
A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measurin
Ratling [72]

Answer:

The standard deviation of weight for this species of cockroaches is 4.62.

Step-by-step explanation:

Given : A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

To find : What is the approximate standard deviation of weight for this species of cockroaches?

Solution :

We have given,

Mean \mu=50

The sample mean x=55

A lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

i.e. P(X>55)=14%=0.14

The total probability needs to sum up to 1,

P(X\leq 55)=1-P(X>55)

P(X\leq 55)=1-0.14

P(X\leq 55)=0.86

The z-score value of 0.86 using z-score table is z=1.08.

Applying z-score formula,

z=\frac{x-\mu}{\sigma}

Where, \sigma is standard deviation

Substitute the values,

z=\frac{x-\mu}{\sigma}

1.08=\frac{55-50}{\sigma}

1.08=\frac{5}{\sigma}

\sigma=\frac{5}{1.08}

\sigma=4.62

The standard deviation of weight for this species of cockroaches is 4.62.

4 0
3 years ago
A shop is selling notebooks for £1.50 each.
Tema [17]

Answer:

18 . 75

Step-by-step explanation:

1.50's half is 0.75 , Then multiply £1.50 × £25

8 0
2 years ago
Read 2 more answers
Triangle ABC has side lengths 12, 16, and 20. Do
aev [14]

Answer:

no they dont form a Pythagorean triple

Step-by-step explanation:

a2 + b2 = c2

4 0
2 years ago
Aiden is eating from the box of cereal shown. Find the total surface area of the box. cereal 13.5 in. 2.5 in. 8 in. Total surfac
blondinia [14]

Answer:

Step-by-step explanation:

Two of the sides are 13.5 inches by 2.5 inches, two sides are 13.5 inches by 8 inches, and two sides are 2.5 inches by 8 inches.

Surface area = 2*13.5*2.5 + 2*13.5*8 + 2*2.5*8

5 0
3 years ago
Other questions:
  • Donna and Emily are sisters. Donna’s age and Emily’s age add up to 31. Donna is 3 years younger than Emily.How old are the two s
    9·1 answer
  • For the expression 6 − y + 3, determine the coefficient for the variable term. (2 points) −1 0 3 6
    11·2 answers
  • False rational statement?
    13·2 answers
  • I need the Point-Slope Form Equation
    13·1 answer
  • A conjecture and the two-column proof used to prove the conjecture are shown. Given: S is the midpoint of segment R T. Segment R
    10·2 answers
  • a person can pay $27 for a membership to the science museum and then go to the stamp for just $1 per visit what is the maximum n
    9·1 answer
  • Ik this isnt part of math but I really need help with this question please answer as soon as possible im being timed on this tes
    5·1 answer
  • Pls help me with this i will give brainliest if two ppl answer :)
    13·2 answers
  • Fill in the blank <br> 30.030___30.03
    15·2 answers
  • If italic sin open parentheses 2 x close parentheses equal italic cos open parentheses x plus 30 degree close parentheses comma
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!