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
Tju [1.3M]
2 years ago
7

Which of these statements is true?

Mathematics
1 answer:
Bess [88]2 years ago
8 0
D is the correct answer. Every square has 2 pairs of parallel sides.
You might be interested in
Data Set: 13, 1, 18, 20, 18<br> • Mean =<br> Median =<br> • Mode =<br> • Range -<br> • Outlier -
KengaRu [80]

Answer:

mean=14

median=3

mode=20

range=19

8 0
3 years ago
Read 2 more answers
Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8
drek231 [11]

Answer:

95% Confidence interval:  (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, \bar{x} = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)

(96.06,103.94) is the 95% confidence interval for  the population mean test score.

8 0
3 years ago
Mr. peters buys 3 1/4 pound of grapes for $4.55 what is the unit cost of the grapes
anastassius [24]
Divide 3 1/4 with 4.55
6 0
2 years ago
A right angled triangle has sides of length 9cm, 12cm and 15cm. Calculate its area in square centimetres.
Dmitriy789 [7]

The area of a right angled triangle with sides of length 9cm, 12cm and 15cm in square centimeters is 54 sq cm.

The formula to calculate the area of a right triangle is given by:

Area of Right Triangle, A = (½) × b × h square units

Where, “b” is the base (adjacent side) and “h” is the height (perpendicular side). Hence, the area of the right triangle is the product of base and height and then divide the product by 2.

We know that the hypotenuse is the longest side. So, the area of a right angled triangle will be half of the product of the remaining two sides.

Given sides of the triangle:

a=9cm

b=12cm

c=15cm

From this we know that the hypotenuse is c. Are of the triangle will be obtained by the other two sides.

∴Area = \frac{1}{2} x 9 x 12

= 54cm^{2}

5 0
1 year ago
Guys help.. this is overdue..
loris [4]
So if his homework takes 25 minutes , and his math takes m minutes , and then as a while it takes h minutes, here’s an example of two equations you can use ;
M+25= h of 25+m=h you can do either one as you please because it doesn’t matter the order as long as they
Both equal h !! Hope this helps , sorry that it’s overdue :( have a great day:))))
4 0
2 years ago
Read 2 more answers
Other questions:
  • The bird house in your friend's yard casts a shadow that is 14 feet long. Your friend is 5 feet tall and casts a shadow that is
    7·2 answers
  • 50 POINTS FOR WHOEVER ANSWERS CORRECTLY!!!!! Rotate these coordinates 270 degrees counterclockwise around the origin and then tr
    7·1 answer
  • Is the simplified form of 2 square root of 3 + 3 square root of 3 rational? (1 point) Yes No
    6·1 answer
  • Solve the equation below for x. <br> 500 = 25e ^ (2x)
    14·1 answer
  • A large on folded flag has an area of 2048 cm^2 and is folded into fourths, and then fourths again, and so on. Record the area o
    9·1 answer
  • Write 927 and 15 hundredths in standard form
    8·1 answer
  • indictate which of the following are propositions.For the ones which are propositions, determine the truth value.(a) The integer
    14·1 answer
  • • What can you say about the values of 180 and 2x2x3x3x5?
    15·1 answer
  • Please help I don’t understand this
    8·1 answer
  • 12. The area of the flower garden is 9.7 square meters
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!