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choli [55]
2 years ago
13

X 5.2.19

Mathematics
1 answer:
Semmy [17]2 years ago
7 0

Answer:

Step-by-step explanation:

y = ax² + bx + c

Plug the points into the equation to get a system of 3 equations with 3 unknowns a, b, and c.

-27 = 4a - 2b + c

-42 = 9a + 3b + c

-12 = a + b + c

(a,b,c) = (-4,1,-9)

y = -4x² + x - 9

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Lynn bought a bag of grapefruit, 1 5/8 pounds of apples, and 2 3/16 pounds of bananas. The total weight of her purchase was 7 1/
Virty [35]
If you would like to know how much did the bag of grapefruit weigh, you can calculate this using the following steps:

7 1/2 pounds - 1 5/8 pounds of apples - 2 3/16 pounds of bananas = 7 1/2 - 1 5/8 - 2 3/16 = 15/2 - 13/8 - 35/16 = 120/16 - 26/16 - 35/16 = 59/16 = 3 11/16 pounds of grapefruit

The correct result would be 3 11/16 pounds of grapefruit.
8 0
3 years ago
PERMUTATION:
horsena [70]

Answer:

28

Step-by-step explanation:

It can be a one digit no.

_

2C1 = 2 (only two even options available)

It can be a 2 digit no.

_ _

The last digit has to be even for the no. to be even.

2C1 × 4C1 = 8 (2C1 for the last digit, 4C1 for the first)

It can be a 3 digit no.

_ _ _

First digit has to be less than 5 to be less than 500, and the last digit has to be even.

1) 2/4 _ 4

2C1 × 3C1 = 6 (2C1 to choose between 2 and 4, 3C1 for the second digit)

2) 1/3 _ 2/4

2C1 × 3C1 × 2C1 = 12 (2C1 to choose between 1 and 3, 3C1 for the second digit, 2C1 to choose between 2 and 4)

Total = 2 + 8 + (6 + 12)

= 28

5 0
3 years ago
Find the sum 5 + (-5) + 39
Varvara68 [4.7K]

Hello,

Solution:

Follow PEMDAS

= 5 + (-5) + 39

= 5 - 5 + 39

= 0 + 39

= 39

Answer - 39

8 0
3 years ago
What is the answer to -11b+7=40?
Andrews [41]

Hey there!

-11b + 7 = 40

  • SUBTRACT by 7 on each of your sides.

-11b + 7 - 7 = 40 - 7

Cancel out: 7 - 7 because that gives you 0

Keep: 40 - 7 because it helps us solve for our answer

40 - 7 = 33

  • DIVIDE both sides by -11

11b/-11 = 33/-11

Cancel out: -11b/-11 because it equals 1

Keep: 33/-11 because it gives you -3

33/-11 = 33 ÷ -11 = 3

<h3><u>b</u><u> = -3 </u></h3>

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

4 0
3 years ago
Read 2 more answers
Find the common difference in the arithmetic sequence.
finlep [7]
To find the common difference, subtract the 1st term from the 2nd term

1 8/9 - 2 =
17/9 - 2 =
17/9 - 18/9 =
-1/9 <==


7 0
3 years ago
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