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scoray [572]
3 years ago
5

1. Solve the quadratic equation using quadratic formula :x2 – 7x + 12 = 0​

Mathematics
1 answer:
frez [133]3 years ago
3 0

Answer:

x = 4 and 3

Step-by-step explanation:

[7±√(-7)²-4(1)(12)]/2

x = 4, 3

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Combine like terms to create an equivalent expression 3.4 - 2.8d + 2.8d - 1.3
zalisa [80]

Answer:

3.4 - 2.8d + 2.8d - 1.3 = 2.1

Step-by-step explanation:

The given expression is 3.4 -2.8d + 2.8d -1.3

Let's see the definition of like terms.

Like terms are the terms having the same variable and the same exponents.

Examples: -3xy, 2xy  and 4y, 5y and -3, 2.

Now let's identify the like terms from the given expression.

3.4 -2.8d + 2.8d -1.3

Here the like terms are -2.8d, +2.8d and 3.4, -1.3

3.4 -2.8d + 2.8d -1.3

= -2.8d + 2.8d + 3.4 - 1.3            [-2.8d + 2.8d = 0] and 3.4 -1.3 = 2.1

= 0 + 2.1

=2.1

The answer is 2.1

6 0
3 years ago
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The bar diagram represents 24 hours in one day and shows a mark at 30%. If you sleep 30% of the day, how many hours do you sleep
Sedbober [7]
30% = 3/10

Number of hours you sleep = 24hours × 3/10
= 24hours ÷ 10 × 3
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Hope this helps! :)
4 0
3 years ago
Need help with 6÷4,477
sukhopar [10]
The "CORRECT" answer is 746 with a remainder of 1

I hope this helps. 

Have a "AWESOME" day! 

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3 years ago
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Line t has an equation of y = -8x + 7. Line u includes the point (-1, 7) and is parallel to line
umka2103 [35]

Answer:

y = -8x - 1

Step-by-step explanation:

y = mx + b

7 = -8 (-1) + b   Substitute in points for x and y. Substitute -8 for m (parallel)

7 = 8 + b

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Verdich [7]

Answer:

D-The first bucket will be completely filled 11 minutes before the second bucket sorry if i am wrong

Step-by-step explanation:

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