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
SCORPION-xisa [38]
3 years ago
11

Which expression completes the following equation? 3 × 31 = A. 31 × 3 B. 31 - 3 C. 31 ÷ 3 D. 31 + 3

Mathematics
1 answer:
Delvig [45]3 years ago
5 0
Hello! The answer has to do with multiplication and 3 * 31 is 93. Adding, subtracting, and dividing will not give you the same answer. 3 * 31 = 31 * 3 demonstrates the communtative property and A is the only one that makes sense. The answer is A: 31 * 3.
You might be interested in
I NEED HELP PLEASE, THANKS! :)
NISA [10]

Answer:   \bold{b)\quad \dfrac{2\pi}{3},\dfrac{4\pi}{3},0}

<u>Step-by-step explanation:</u>

Note the following identities: tan² x = sec²x - 1

                                                 \sec x=\dfrac{1}{\cos}

tan² x + sec x = 1

(sec² x -1) + sec x = 1

sec² x + sec x - 2 = 0

(sec x + 2)(sec x - 1) = 0

sec x + 2 = 0     sec x - 1 = 0

sec x = -2          sec x = 1

\dfrac{1}{\cos x}=-2\qquad \dfrac{1}{\cos x}=1\\\\\cos x=-\dfrac{1}{2}\qquad \cos x=1\\\\x=\dfrac{2\pi}{3}, \dfrac{4\pi}{3}\qquad x=0

8 0
3 years ago
Read 2 more answers
The volume of a cube is 460cm3.<br> Work out the length of its side rounded to 1 DP.
yaroslaw [1]
The side length is the cube root of 460.

cube root(460) = 460^(1/3)
That's approximately 7.7
7 0
3 years ago
Please answer this question now
Kaylis [27]

Answer:

JK=  3 in

Step-by-step explanation:

There is a theorem that says that the angle of a tangent and the radius is of 90°

so we can use the pythagora's theorem

JK^2+JH^2=HK^2\\JK^2+(4)^2=(5)^2\\JK^2+16=25\\JK^2=9\\JK=3

5 0
3 years ago
Read 2 more answers
ANSWER ONLY IF U KNOW I RLLY NEED HELP THIS IS THE LAST OF MY POINTS.
Ostrovityanka [42]
Sure the answer is 2 4.5
7 0
3 years ago
Read 2 more answers
A researcher believes that there is a difference in how cautious male stray cats and female stray cats are when approaching peop
Anika [276]

Answer:

The null hypothesis is that there is no difference in the mean number of male and female cats

H₀; μ₂ - μ₁ = 0

Step-by-step explanation:

The given parameters are;

The given percentage of male stray cat population = 50%

The given percentage of female stray cat population = 50%

The number of areas the researcher visits, n = 15

The number of stray male cats he finds = 11

The kind of test to be performed = Sign test

The significance level, α = 0.05

A) Therefore the null hypothesis is H₀; μ₂ - μ₁ = 0

The alternative hypothesis is Hₐ; μ₂ - μ₁ ≠ 0.

5 0
3 years ago
Other questions:
  • Determine which statement is true about the graph of a function
    8·1 answer
  • A 60 foot ladder is leaned against the side of a building. The bottom of the ladder is 36feet from the building. How high up the
    6·1 answer
  • Use the spinner to identify the probability to the nearest hundredth of the pointer landing on a non-shaded area. PLEASE HELP AS
    13·1 answer
  • A person who sold an article at a profit of 20% if he sold it for RS 81 less his loss would have been 12% . Find it's cost price
    14·2 answers
  • How to find the area of a square with radius 17 square root 2
    6·1 answer
  • What is “x” and “z” on this question?
    15·1 answer
  • Cole makes t-shirts. He charges a fix amount to create a t-shirt design. He than charges and addition amount for each t-shirt co
    11·1 answer
  • Please help show my work
    8·1 answer
  • Terry and Ed start a lawn mowing business and purchase the mowers and equipment for $800. They charge $20 for each lawn and use
    7·1 answer
  • A regular tank measuring 30 cm by 10 cm by 20 cm is 2/3 filled with water. Calculate the volume of water in the tank in litres.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!