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ira [324]
3 years ago
9

The number 21 is a(n) — number because

Mathematics
1 answer:
ser-zykov [4K]3 years ago
3 0

Answer:

Composite

Step-by-step explanation:

because it's factors are:

1, 3, 7, 21

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Lorenzo has a checkbook balance of $118.00. He writes two checks, one for $9.00 and one for $84.25. He then deposits $95.00. Fin
pishuonlain [190]

subtract 9 from 118 then subtract 84.25 from that amount then add 95.

6 0
3 years ago
-1, 2, 7, 14, 23 can someone help me find quadratic nth term and explain please?
goblinko [34]

Answer:

a_{n} = n² - 2

Step-by-step explanation:

Consider the differences between the values

- 1  ,  2  ,  7  ,  14  ,  23

    3      5     7     9 ← not constant

Now consider the difference of these differences

3  ,  5  ,  7  ,  9

   2     2     2 ← constant

Since the second differences are constant, this indicates a quadratic n²

Now consider the position values of n

n = 1 : 1² = 1 ← require to subtract 2 for - 1

n = 2 : 2² = 4 ← require to subtract 2 for 2

n = 3 : 3² = 9 ← require to subtract 2 for 7

n = 4 : 4² = 16 ← require to subtract 2 for 14

n = 5 : 5² = 25 ← require to subtract 2 for 23

Thus n th term formula is

a_{n} = n² - 2

8 0
4 years ago
If f(x)=-4x^2-6x-1 and g(x)=-x^2-5x+3 find (f+g)(x) PLS ANSWER FAST!
arlik [135]
When you do (f+g)(x), all you have to do is take both functions and add them to each other. It should look like this when you set it up:
(f + g)(x) = (4x {}^{2}  - 6x - 1) + (x {}^{2}  - 5x + 3)
Then just add like terms and you should get:
(f + g)(x) = 5x {}^{2}  - 11x + 2
Hope this helped.
4 0
3 years ago
A tire on a car has an outside diameter of 36.30 in. Through what angle​ (in radians) does the tire turn while traveling 1 ​mile
leva [86]

Answer: 3491.91 radians

Step-by-step explanation:

The total distance in inches traveled by car = 63,360 inches (1 mile)

Total Revolution made by tire through traveling =

=\frac{63360}{\pi *36.30}

We know 1 revolution angle made by tire = 2π radian (360 degrees/1 revolution of unit circle)

In   \frac{63360}{\pi *36.30} ,

the revolution angle made by the tire =

=2\pi  * \frac{63360}{\pi 36.60}

=2  * \frac{63360}{ 36.60}

= 3491.91 radian

7 0
2 years ago
In a given year, about __________ of all married couples get divorced. Group of answer choices less than 2 percent 48 percent 5
MissTica

In a given year, about 48 percent of all married couples get divorced.

This is a per America.

To know more about percentages visit: brainly.com/question/2236179

#SPJ4

7 0
2 years ago
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