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
alina1380 [7]
2 years ago
11

Plz help worth 20 points

Mathematics
2 answers:
Nikolay [14]2 years ago
6 0

Answer:

20cm^{2}

Step-by-step explanation:

Area=base times height

Base=4 cm, height=5

4 x 5 =20

Answer: 20cm^2

Alexeev081 [22]2 years ago
3 0
Answer is B:)

100% B trust me
You might be interested in
Weights were recorded for all nurses at a particular hospital, the mean weight for an individual nurse was 135 lbs. with a stand
Aloiza [94]
Given:
population mean, μ =135
population standard deviation, σ = 15
sample size, n = 19

Assume a large population, say > 100,
we can reasonably assume a normal distribution, and a relatively small sample.
The use of the generally simpler formula is justified.

Estimate of sample mean
\bar{x}=\mu=135

Estimate of sample standard deviation
\s=\sqrt{\frac{\sigma^2}{n}}
=\sqrt{\frac{15^2}{19}}=3.44124  to 5 decimal places.

Thus, using the normal probability table,
P(125
=P(\frac{125-135}{3.44124}
=P(-2.90593
=P(Z
=P(Z

Therefore 
The probability that the mean weight is between 125 and 130 lbs 
P(125<X<130)=0.0731166-0.0018308
=0.0712858



3 0
3 years ago
4,750 mm
raketka [301]

Answer:

its b

Step-by-step explanation:

4 0
3 years ago
Write a real world situation to explain the inequality -$25 &lt; $7
Elodia [21]
Sara's bank account has a debt of $25. Sofia's bank account has a balance of $7. Who has more money in their bank account? Write an inequality explaining the answer.
8 0
3 years ago
( 4 + 2n ^3 ) + ( 5n^3 + 2)
Hoochie [10]

Answer:

7n^3 + 6

Step-by-step explanation:

(4 + 2n^3) + (5n^3 + 2) =

= 2n^3 + 5n^3 + 4 + 2

= 7n^3 + 6

5 0
3 years ago
Read 2 more answers
The width of a rectangle is one half it's length. The perimeter of the rectangle is 54 cm. What are the width and length of the
Firlakuza [10]
Width= 1/2x length=x
to find the perimeter, it's the width+width+length+length so:
1/2x+1/2x+x+x=54
3x=54
x=18
the length is 18 cm and the width is 9 cm
7 0
3 years ago
Read 2 more answers
Other questions:
  • The length of a rectangle is 3cm more than twice the width. The perimeter of the rectangle is 42 cm. Find the dimensions of the
    13·1 answer
  • What is the radius of a circle whose equation is X^2 plus Y^2 -10X +6 X +18=0?
    10·1 answer
  • Michael paid $10.11 for a pair of jeans. This amount included a tax of 2%. What was the cost before tax?
    7·1 answer
  • Jane and Ken share some money in the ratio of 5:3
    11·2 answers
  • Round 8,088 to the nearest thousand
    5·2 answers
  • Evaluate 4 a + 5 b when a=3 and b= -1.2
    7·2 answers
  • Helooo can some one help me please
    14·1 answer
  • Help me pls and thanks
    8·2 answers
  • Yoko received a $70 gift card for a coffee store. She used it in buying some coffee that cost $7.37 per pound. After buying the
    15·1 answer
  • A group of students each are given a certain number of green and yellow marbles​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!