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miss Akunina [59]
3 years ago
10

Please help lots of points

Mathematics
2 answers:
aleksley [76]3 years ago
5 0

Answer:

The answer is B.

Colt1911 [192]3 years ago
4 0

Answer:

directrix

Step-by-step explanation:

The parabola is equidistant from the line called the directrix

and from a point called the focus

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if the ratio of home fans to visiting fans is 5:2 and all 42000 seats in a stadium are filled, how many visiting fans are in att
jeka94

Answer:

12000

Step-by-step explanation:

Sum the parts of the ratio, 5 + 2 = 7

Divide the total seats by 7 to find the value of one part of the ratio

42000 ÷  7 = 6000 ← value of 1 part of the ratio

visiting fans = 2 × 6000 = 12000

8 0
3 years ago
How much of a radioactive substance must be presented to decay to 80 grams in 12 years if the half-life of the substance is 7.6
max2010maxim [7]

Answer:

Radioactive in half life is 51gram

Step-by-step explanation:

80grams:12years

X :7.6years

12x÷x=x

7.6×80÷12=51gram

4 0
2 years ago
Read 2 more answers
Solve the simultaneous equations 4x+8y=-4 2y-5x=23
ad-work [718]

Answer:

x = -4,  y = 3/2

Step-by-step explanation:

simplify the 1st equation by dividing each term by 4 to get:

x + 2y = -1

-5x + 2y = 23

Subtract to get: 6x = -24

x = -4

find 'y':    2y - 5(-4) = 23

               2y + 20 = 23

               2y = 3

                y = 3/2

8 0
3 years ago
Read 2 more answers
A number has the digit 3 in the once place and the digit 4 in the tens place.which of these is another way to write this number?
Anarel [89]
The best way will be 40+3
3 0
4 years ago
Read 2 more answers
A meuseum had x visitors on friday. On Saturday it had 150 more visitors than it did on friday. The total number of visitors on
ANTONII [103]

Answer:

75 people.

Step-by-step explanation:

If Friday is x, then Saturday is 150 + x. The number of people on Sunday then is (Friday + Saturday)/2, thus (x + (150 + x))/2. This then simplifies to (x + 150 + x)/2 ---> (2x + 150)/2 ---> 2x/2 + 150/2 ---> x + 75. So, Friday is x and Sunday is x + 75, to find out how many more visitors the museum have on Sunday than Friday, you subtract the two numbers. (x + 75) - x = 75.

8 0
4 years ago
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