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
vampirchik [111]
3 years ago
7

Is 21 a prine number or a compositr number?​

Mathematics
1 answer:
earnstyle [38]3 years ago
7 0

Answer:

Composite Number

Step-by-step explanation:

1,3,7,21

This does not have just 1 and 21, it has more

You might be interested in
I need help solving this plz
Mamont248 [21]
We can rewrite cot(45^{\circ}+2\theta) as tan(90^{\circ}-(45^{\circ}+2\theta) \Rightarrow cot(45^{\circ}+2\theta) equals to tan(45^{\circ}-2\theta).

Now we need to take an arctan of both sides.

\theta = 45^{\circ}-2\theta+180n^{\circ}
\\3\theta = 180n^{\circ}+45^{\circ}
\\\theta = 60n^{\circ}+15^{\circ}
\\\theta = 15^{\circ}

Your answer is 15^{\circ}.
8 0
4 years ago
Y - 5 = -2x - 4<br><br>Write in simpilest form.
Romashka-Z-Leto [24]
Y - 5 = -2x - 4

Add 5 on both sides.
y = -2x + 1

y = -2x + 1 is in simplest form.
7 0
4 years ago
Is 16x+7 equivalent to 8(2x+9)-2
andrew-mc [135]

no beacuse when distributed it will be:

16x + 72 - 2

16x + 70

5 0
3 years ago
Read 2 more answers
What is measure of cgf?​
Digiron [165]

Answer:

Step-by-step explanation:

A triangle adds up to 180.

180 - 50 = 130

Since both of the missing angles are congruent each of the missing angles is 65 degrees.

130/2 = 65

As per the exterior angle theorem, the measure of the exterior angle is determined by the sum of the opposite interior angles.

65 + 65 = 130

So, the measure of

6 0
3 years ago
Fish tank has 10450 ml of water and is leaking 270 l
Dmitrij [34]

The expression for amount of water in fish tank is 10450 – 270n

<u>Solution:</u>

Given that, a fish tank has 10450 ml of water in it

And it is leaking at the rate of 270 l Ml per min.  

We have to find how to write a function for this change in amount of water in the fish tank.

Now, we know that, amount of water present in fish tank is initial water amount subtracted by leaked water.

Let the letter n represents number of minutes completed.

Then, <em>amount of water in fish tank = initial amount of water – leaked water </em>

= initial amount of water – number of minutes completed x amount of water leaked per minute

= 10450 – n x 270

= 10450 – 270n

Hence, the expression for amount of water in fish tank is 10450 – 270n

5 0
4 years ago
Other questions:
  • The average value of sqrt 3x on the closed interval [0,9] is?
    7·1 answer
  • A toy store sold 405 dolls it sold equal number of dolls each month for 8 months and also sold a few extra dolls during the last
    8·1 answer
  • What is the answer 2x -7= -23
    6·2 answers
  • I need help with the problem circled
    12·1 answer
  • Someone help.I'm new<br>i suck at math​.Pleaseweee 50 points?
    10·1 answer
  • Triangle IJK has the coordinates listed I(5,-8) J(10,-8) k(7,-4) where is J’ after a reflection over the y-axis
    9·1 answer
  • Holly checked her answer to a division problem by estimating the quotient. Which is the best estimation of the
    13·1 answer
  • You lend out S5500 at 10% compounded monthly. If the debt is repaid in 18 months, what is the total owed at the time of repaymen
    10·1 answer
  • What is a factor? _____________________________________________
    13·2 answers
  • Find the slope of the line that passes trough (66,68) and (21,-4)​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!