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liberstina [14]
3 years ago
7

Which is a factor of 21? 4 3 6 5

Mathematics
2 answers:
arsen [322]3 years ago
3 0

Answer:

3

Step-by-step explanation:

Using listing:

1 \times 21 = 21

3 \times 7 = 21

No other factors are possible.

Hence, 1, 3, 7 and 21 are factors of 21.

Nadusha1986 [10]3 years ago
3 0

Answer: 3

Step-by-step explanation:

3 is the only number you can multiply to get 21. Example 3x7=21

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Which pairs of quadrilaterals can be shown to be congruent using rigid motions?
Misha Larkins [42]

Answer:

1 and 2 are not congruent; 1 and 3 are congruent; 1 and 4 are congruent; 2 and 3 are not congruent; 2 and 4 are not congruent; 3 and 4 are congruent.

Step-by-step explanation:

From the diagram, we can see that the angle measures and side measures of figures 1, 3 and 4 are the same.  This means that these three figures are congruent.  Figure 2, however, is not congruent to any of the other 3.

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3 years ago
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23

Step-by-step explanation:

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5 0
3 years ago
Use the equation Y= 11 - 5X to find y when x=7.
kap26 [50]
Plug in x = 7. Then use the order of operations (PEMDAS) to simplify
y = 11 - 5*x
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7 0
3 years ago
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For the pair of supply-and-demand equations, where x represents the quantity demanded in units of 1000 and p is the unit price i
Liono4ka [1.6K]

Answer:

7 and 6 respectively

Step-by-step explanation:

Firstly, we have to solve the equations simultaneously.

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Multiply equation I by 3 and ii by 2

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Subtract the second from first to yield:

43p = 258

p = 6

Insert this in equation 1 where we have 2x + 7p = 56

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2x + 42 = 56

2x = 14 and x = 7

The equilibrium price is 6 and the equilibrium quantity is 7

8 0
3 years ago
A formula is expressed as D= a(2+kt). Express k in the terms of D, a and t? (Show work)
Mariulka [41]
SIMPLIFIED \: \: ALGEBRA \\ \\ \\\\We \: are \: given \: - \\ \\ \: \\ D \: = \: a \: ( \: 2 + kt \: ) \\ \\ D \: = \: 2a \: + \: akt \: \\ \\ D \: - \: 2a \: = \: akt \: \\ \\ \frac{D \: - \: 2a}{at} \: = \: k \\ \\ \\ Therefore \: , \: in \: terms \: of \: D \: , \: \: a \:, \: \: and \:  \: t \: \\ \\ k \: = \: \frac{D - 2a}{at \: } \: \: \: \: \: \: \: Ans.
7 0
3 years ago
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