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ra1l [238]
4 years ago
9

What is the function value of f(x)=-2x^2-4x-7

Mathematics
1 answer:
kondaur [170]4 years ago
7 0
You can go onto a website link https://www.freemathhelp.com/factoring-calculator.php :)
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Elena and her husband Marc both drive to work. Elena's car has a current mileage (total distance driven) of 7,000 and she drives
cupoosta [38]
Yes they will be equal at some point. Although Marc has more miles on his car at the current moment, Elena is adding miles at a higher rate.

Elena's car: 7000 + 21000t

Marc's car: 20000 + 11000t

To find at what time t they are equal, set these two expressions equal to each other and solve for t.

7000 + 21000t = 20000 + 11000t

13000 = 10000t

t = 1.3 years from now








3 0
4 years ago
What is the probability that a dice rolls a 1, three times in a row.
lisov135 [29]

Answer:

1/216 or 0.0046

Step-by-step explanation:

Rolling a '1' one time has a probability of 1/6.  Rolling a die three times and getting a '1' each time is an independent event, meaning that no roll affects the probability of a '1' happening on any other roll.  When calculating probability of independent events, multiply them together.  So the probability of a '1' three times in a row is...

(1/6)(1/6)(1/6) = 1/216 or 0.0046

6 0
3 years ago
Why do we express rational Numbers as decimals?
cestrela7 [59]

Answer:

Repeating decimals are considered rational numbers because they can be represented as a ratio of two integers. The number of 9's in the denominator should be the same as the number of digits in the repeated block.

Step-by-step explanation:

3 0
3 years ago
Please help on these questions​
Arada [10]

Answer:

6) 9216π

8) 24

Step-by-step explanation:

6)

V= 2/3πr³

   r = 48/2 = 24

V = 2/3π24³

V = 9216π

8)

V = 4/3πr³

2304π = 4/3πr³

r³= (2304π)/4/3π

r³= 1728

\sqrt[3]{r^3} =\sqrt[3]{1728}

r = 12

D = 2r

D = 2 x 12 = 24

8 0
3 years ago
Can someone help me
worty [1.4K]

Answer:

B = 129

Step-by-step explanation:

Opposite angles of a parallelogram are equal (or congruent)

A and C are both 51.

All angles in a parallelogram equal 360

Take both the known angles and substract from 360, than divide by 2.

B = (360 - 51 - 51)/2

B = 129

7 0
3 years ago
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