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Damm [24]
2 years ago
11

Can someone help me with this problem please

Mathematics
1 answer:
Makovka662 [10]2 years ago
6 0

Answer:

Circumference=2πr or πd

So:

3.14 × 6cm

=18.84cm

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What is the measure of angle x, in degrees
ratelena [41]

Option C ,

40 degrees

Because angle Z was 70 (isosceles triangle)

Then 180-140=40 degrees

7 0
3 years ago
G. a car travels at 60m/s for 50minutes <br> south west.calculate how far it will travel
Tju [1.3M]

Step-by-step explanation:

first we want to convert it to minutes so we multiply 60m/s by 60. 3600m/min or 3.6km/min

we just multiply 50 by 3.6.

therefore the car travels 180km south west

3 0
2 years ago
A tree is sold based on the circumference of the tree. If a tree has a radius of 4 inches, then what is the circumference of the
Maru [420]

Answer:

Step-by-step explanation:

use https://quizlet.com/282243546/circumference-flash-cards/ to find it

4 0
3 years ago
Read 2 more answers
The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

  The plane is at an altitude of 21000 feet 6 minutes after lift off.

4 0
3 years ago
Rewrite in radical form. If the number is rational, write it without using radical<br> (81)^(−1/4).
vesna_86 [32]

Answer:

1/3

Step-by-step explanation:

simplify

81^(-1/4)

= 1/81^(1/4)

= 1/[3×3×3×3]^(1/4). (factorize 81)

= 1/[3]^(4/4)

= 1/3

6 0
3 years ago
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