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PilotLPTM [1.2K]
3 years ago
8

Find the area of a circle with a diameter of 4 . Either enter an exact answer in terms of use 3.14 3enter your answer as a decim

al.
Mathematics
1 answer:
Sphinxa [80]3 years ago
5 0

Answer:

 4pi

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

where r is the radius

The radius of a circle is found by

r =d/2 where d is the diameter

r = 4/2 = 2

So A = pi (2)^2

        pi (4)

        4pi

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A phone sells for $137.99. It is now on sale for 1/10 off the original price. Tom has a coupon for an extra 5% off the sale pric
vlabodo [156]

Answer: Tom will pay $20.01 lesser than the original price.

Step-by-step explanation:

The original price of the phone is $137.99. It is now on sale for 1/10 off the original price. This means that the discount on the original price is 1/10 × 137.99 = 13.799. The new price will be the original price - the discount.

The new price is 137.99 - 13.799 = $124.191

Tom has a coupon for an extra 5% off the sale price. It means that Tom would pay 5% off $124.191. The amount that Tom would pay will be

124.191 - (5/100 × 124.191) = 124.191 - 6.20955 = $117.98

The difference between the original price and the price that Tom will pay is

137.99 - 117.98 = $20.01

7 0
3 years ago
You earned a 84% on a science test. You answered 21 questions correctly. How many questions were on the test?
sergij07 [2.7K]
20 x .80 = 16 
So the answer would be 16. 
I hope this helps :)
6 0
3 years ago
If BE ≅ LU in quadrilateral BLUE shown, which additional information would be sufficient to prove quadrilateral BLUE is a parall
goblinko [34]

Answer: Option A and option B would be sufficient to prove that BLUE is a parallelogram. The diagonals are congruent IS NOT ALWAYS TRUE about a parallelogram.

Step-by-step explanation: Please refer to the diagram attached for details. One of the properties of a parallelogram is that each pair of opposite sides are equal to each other. So lines BE and LU are parallel as shown by the arrows on both lines in the attached picture. Same applies to lines BL and EU. Line BE doesn’t have to be congruent to BL, but BE must be congruent to LU. Same applies to BL and EU. Also in a parallelogram, opposite sides are congruent, opposite angles are congruent (angle B = angle U and angle E = angle L) and opposite sides are parallel. The diagonals are NOT ALWAYS congruent. This is only possible if all four sides are of the same measurement. However if for instance, side BE does not equal BL, then the diagonals cannot be equal.

8 0
3 years ago
An artist is using three different colors in a mosaic. The ratio of green to blue to yellow color tiles in the mosaic is 4:6:9.
alex41 [277]
You have 42 blue tiles (6) so 42 / 6 = 7
so since 6 lots of = 42
1 lot of = 7
green has 4 sets of tiles so 4 x 7 = 28
yellow has 9 sets so 9 x 7 = 63
the ratio from green blue yellow is
28:42:63
8 0
3 years ago
Read 2 more answers
PLSSS HELPP, I WILL MARK BRAINLIEST IF YOU ANSWER BEFORE 5
denis23 [38]

Answer:

4%

Step-by-step explanation:

I added a screenshot of work, hopefully this helps you!

7 0
3 years ago
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