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Vlad [161]
3 years ago
7

Amy is scuba diving. She starts at – 15.5 m relative to the ocean surface. She swims

Mathematics
1 answer:
solniwko [45]3 years ago
3 0

Answer:

-9.85

Step-by-step explanation:

-15.5 - 4.2 = -19.7

Negatives work like positives

19.7 / 2 = 9.85

Turn that into a negative

-9.85

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Answer: Trapezoid

Step-by-step explanation:

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3 years ago
Scientific Notation
Katarina [22]
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3 0
2 years ago
Read 2 more answers
O is the centre of the circle, EF is a tangent, angle BCE=28 degrees, angle ACD=31 degrees.
Yuki888 [10]

Answer:

a. 28˚

b. 76˚

c. 104˚

d. 56˚

Step-by-step explanation

a. because angle between tangent and chord is equal to the angle(s) in alternate segment.

b. because angles in triangles add up to 180˚, 180-28=152 and because isosceles triangle, 152/2=76˚

c. because angles in triangles add up to 180˚ and opposite angles in a cyclic quadrilateral add up to 180˚, 31+76=107, 180-107=73, 73-28=45, angles in triangle so 180-(31+45)=104˚

d. 28*2=56˚ because angles at circumference are half angles at centre

4 0
3 years ago
Peter has 100$. The price of a watch is 60$. If Peter gets 25% discount,can he buy 2 watches?
yKpoI14uk [10]

yes.

25 percent discount means that the price of one watch is 45 dollars.

45 plus 45 is less than 100.

6 0
2 years ago
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Caroline took a math test and got 19 out of 25 questions correct. What percent of the questions did she answer correctly?
algol [13]

Answer:

76%

Step-by-step explanation:

do the amount of correct answers divided by the total of questions asked.

5 0
2 years ago
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