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2 years ago

Which is a factor of 21? 4 3 6 5

Mathematics

2 answers:

arsen [322]2 years ago

3 0

Answer:

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]2 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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|(-10)+25)|=<br> PLZZ HELP AND THANK YOU!!!<3

NNADVOKAT [17]

-15 because there is ten before 25

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2 years ago

Find the perimeter of quadrilateral PQRS with the vertices P(2,4), Q(2,3), R(-2,-2), and S(-2,3).

storchak [24]

Answer:

$P=16.53\ units$

Step-by-step explanation:

we know that

The perimeter of quadrilateral PQRS is equal to the sum of its four length sides

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

the vertices P(2,4), Q(2,3), R(-2,-2), and S(-2,3)

step 1

Find the distance PQ

P(2,4), Q(2,3)

substitute in the formula

$d=\sqrt{(3-4)^{2}+(2-2)^{2}}$

$d=\sqrt{(-1)^{2}+(0)^{2}}$

$d=\sqrt{1}$

$dPQ=1\ unit$

step 2

Find the distance QR

Q(2,3), R(-2,-2)

substitute in the formula

$d=\sqrt{(-2-3)^{2}+(-2-2)^{2}}$

$d=\sqrt{(-5)^{2}+(-4)^{2}}$

$dQR=\sqrt{41}\ units$

step 3

Find the distance RS

R(-2,-2), and S(-2,3)

substitute in the formula

$d=\sqrt{(3+2)^{2}+(-2+2)^{2}}$

$d=\sqrt{(5)^{2}+(0)^{2}}$

$dRS=5\ units$

step 4

Find the distance PS

P(2,4), S(-2,3)

substitute in the formula

$d=\sqrt{(3-4)^{2}+(-2-2)^{2}}$

$d=\sqrt{(-1)^{2}+(-4)^{2}}$

$dPS=\sqrt{17}\ units$

step 5

Find the perimeter

$P=PQ+QR+RS+PS$

substitute the values

$P=1+\sqrt{41}+5+\sqrt{17}$

$P=6+\sqrt{41}+\sqrt{17}$

$P=16.53\ units$

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3 years ago

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svet-max [94.6K]

Answer:

A:29

Step-by-step explanation:

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2 years ago

Patel received an allowance of $15 per weeks. How many weeks will it take him to purchase the kit?

Annette [7]

It will take him 10 weeks because $15 x 10= $150

6 0

2 years ago

Please help and dont answer for points. Thx a bunch :)

lesya [120]

HL is the radius which is half of the diameter....lso 24/2 = 12

r = 1/2(121) is the answer for this one since radius is 1/2 of the diameter

6 0

2 years ago

Read 2 more answers