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3 years ago

Factor: m^2 - 20m - 21

Mathematics

2 answers:

Ganezh [65]3 years ago

6 0

(m-21) (m+1)there I thinks it's right unless I messed up my work

Bezzdna [24]3 years ago

5 0

Answer:

$(m - 21)(m + 1)$

Step-by-step explanation:

$m^{2} - 20m - 21$

Lets split the middle term.

$=> m^{2} - 21m + m - 21$

$=> m(m - 21) + 1(m - 21)$

$=> (m - 21)(m + 1)$

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aleksley [76]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

kayden paddled a canoe to an island. the island is 8 miles from the shore. his trip to the island took two hours while paddling

Andrew [12]

Answer:

$2\text{ mph}$

Step-by-step explanation:

GIVEN: kayden paddled a canoe to an island. the island is $8$ miles from the shore. his trip to the island took two hours while paddling against the current. he paddles $6$ mph with no current.

TO FIND: what was the speed of the current.

SOLUTION:

distance of island from the shore $=8$ miles

total time taken by Kayden $=2$ hours

speed of Kayden in still water $=6\text{ mph}$

Let the speed of current be $x$

Speed of Kayden against current $=6-x\text{ mph}$

As,

$\text{Time}=\frac{\text{Distance}}{\text{speed}}$

$2=\frac{8}{6-x}$

$12-2x=8$

$x=2\text{ mph}$

Hence speed of current is $2\text{ mph}$

7 0

3 years ago

Work out 2.9 cos 17° rounded to 2 d.p.

kirill115 [55]

Answer:

2.77

Step-by-step explanation:

2.9 cos (17) = 2.77

6 0

3 years ago

Read 2 more answers

Add or subtract.

Karolina [17]

Answer:

is that you emme!

ok i will give a clue

6 0

3 years ago

1. What is the verbal expression for m<4?

cluponka [151]

1.) M is less than 4
2.) S≥30
Explanation:
S=Shawn. Shawn is older than 30 or equal to the age of 30. Shawn has to be at least 30 years old he can’t be 29 years old and lower. He has to be 30+

4 0

2 years ago