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
Pani-rosa [81]
3 years ago
10

HELPPPP ASAPPP MARKING BRAINLIEST

Mathematics
1 answer:
Sloan [31]3 years ago
8 0

Answer:

1) a

2) c

3) a

Step-by-step explanation:

1) Subsitute

2.14x - 42.9 = ?

2.14(22.4) - 42.9 = ?

47.936 - 42.9 = ?

= 5.036

2) Factor out

6y^2 + 27y

both have 3 and y in common so ...

3y(2y + 9)  

3) Distribute

12m(m - 3n)

12m * m = 12m^2

12m * -3n = -36mn     the only reason -3 is NOT a positive is b/c it has subtraction sign b4 the number

put it in order:

12m^2 - 36mn

You might be interested in
Can someone plzzzzzzzzzzzzzzzzzzzzzzzz help me
Marat540 [252]

9514 1404 393

Answer:

  C.  168°

Step-by-step explanation:

The exterior angle at any vertex of an n-gon will be ...

  360°/n

So a 30-gon will have exterior angles of ...

  360°/30 = 12°

The adjacent interior angle is supplementary to this, so is ...

  180° -12° = 168°

_____

<em>Using the reasonableness test</em>

You know that the interior angles of a square are 90°, and that regular polygons with more sides have larger interior angles. The most any regular polygon's interior angle can be is 180°. The only answer choice between 90° and 180° is the correct choice: 168°.

6 0
3 years ago
NEED HELP ASAP PLEASE WITH EXPLANATION PLEASE
KonstantinChe [14]

Answer:

(1) 20%

Step-by-step explanation:

→ Find the difference in price

200 - 160 = 40

→ Divide difference by original price

40 ÷ 200 = 0.2

→ Multiply the answer by 100

0.2 × 100 = 20%

7 0
3 years ago
The formula for finding the area of a circle is a equals pi r square. solve the formula for r.
Reika [66]
I hope this helps you



Area=pi.r^2


r^2=Area/pi


r= square root of Area/pi
5 0
3 years ago
A survey found that women's heights are normally distributed with mean 62.7 in, and standard deviation 2.8 in. The survey also f
Viefleur [7K]

Using the normal distribution, we have that:

The percentage of men who meet the height requirement is 3.06%. This suggests that the majority of employees at the park are females.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation of men's heights are given as follows:

\mu = 69.3, \sigma = 3.9.

The proportion of men who meet the height requirement is is the <u>p-value of Z when X = 62 subtracted by the p-value of Z when X = 55</u>, hence:

X = 62:

Z = \frac{X - \mu}{\sigma}

Z = \frac{62 - 69.3}{3.9}

Z = -1.87

Z = -1.87 has a p-value of 0.0307.

X = 55:

Z = \frac{X - \mu}{\sigma}

Z = \frac{55 - 69.3}{3.9}

Z = -3.67

Z = -3.67 has a p-value of 0.0001.

0.0307 - 0.0001 = 0.0306 = 3.06%.

The percentage of men who meet the height requirement is 3.06%. This suggests that the majority of employees at the park are females.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

8 0
1 year ago
Write the ratio as a fraction in simplest form without any units 14 days to 5 weeks
Flauer [41]

35:14 in # of days

or

5:2 in #of weeks

5 0
3 years ago
Other questions:
  • A rectangular plot of land has an area 9/10 square mile.The length is 3/2miles whats the width
    11·2 answers
  • There are 7 days in a week how many are in 16 weeks?​
    15·2 answers
  • What is the value of (g o f)(3)?
    5·1 answer
  • The temperature of a city changed by -20°C over a four week. If the temperature changed by the same amount each week write an ex
    12·1 answer
  • If f(x)=x2 + 3 and g(x) = 4x – 9, find f(4)+ g(-3).
    12·1 answer
  • Please find the value of x and explain to me, I will mark brainliest<br>​
    7·1 answer
  • Guy's y'all plzz answer this who knows about it...and also exam is near​
    7·1 answer
  • PLEASE HELP I NEED IT TO PASS THIS CLASS
    6·1 answer
  • Help!!!!!!!!!!<br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B500%7D%20%7D%7B%5Csqrt%5B%5D%7B5%7D%20%7D" id="TexFormu
    9·2 answers
  • Each unit on the coordinate plane represents one block. Donna is at Town Hall. She walks 7 blocks left and 2 blocks up to get to
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!