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NeTakaya
3 years ago
13

78 times 56 plz help me

Mathematics
2 answers:
rewona [7]3 years ago
7 0
Your answer is 4,368
V125BC [204]3 years ago
4 0
An easier way to do this mentally is:
Start with one of the numbers. I will use 78, in this example, but either is fine.
Now, multiply each digit of 78 each digit of 56. When doing this, be sure to take the place of the digit into account. For example, rather than doing 7 * 6, you need do to 70 * 6.
1. 8 * 6 = 48: Take the number in the one's place of 78, and multiply it by the 6 of 56. 
2. 8 * 50 = 400: Now, take the number in the one's place of 78, and multiply it by the next digit in 56, which would be 5. However, the 5 in 56 actually represents 50, so you need to take that into account.
3. 70 * 6 = 420: Now that you have multiplied the digit in the one's place by each digit of the other number, move onto the next digit. Once again, to forget to take into account what that digit actually represents -- it represents seven tens, or seventy! Repeat this until there are no more digits to multiply.
4. 70 * 50 = 3500
5. 3500 + 420 + 400 + 48 = 4368. : Now, add all those results together to get your answer!
78 * 56 = 4368
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Which of the following is the minimum value of the equation y = 3x^2 − 4x − 2?
KonstantinChe [14]

Answer:

-3 1/3

Step-by-step explanation:

The quadratic

... y = ax² +bx +c

has its extreme value at

... x = -b/(2a)

Since a = 3 is positive, we know the parabola opens upward and the extreme value is a minimum. (We also know that from the problem statement asking us to find the minimum value.) The value of x at the minimum is -(-4)/(2·3) = 2/3.

To find the minimum value, we need to evaluate the function for x=2/3.

The most straightforward way to do this is to substitue 2/3 for x.

... y = 3(2/3)² -4(2/3) -2 = 3(4/9) -8/3 -2

... y = (4 -8 -6)/3 = -10/3

... y = -3 1/3

_____

<em>Confirmation</em>

You can also use a graphing calculator to show you the minimum.

5 0
3 years ago
3. When pasta is cooked, it doubles in weight. When Ms. Morrison finished cooking
Rasek [7]

Answer:

275

Step-by-step explanation:

550 divided by 2 is 275.

8 0
3 years ago
Please helpppp, 10 points!
Jet001 [13]
This math problem is about rounding. So you need to round the probability of it for example there is a big probability that it will land on red again.
5 0
3 years ago
15 points?
lubasha [3.4K]

Answer:

A = 5 / P

Step-by-step explanation:

5 / A = P

A = 5 / P

8 0
3 years ago
Can someone help with this question? pretty please! Also I have no idea if it is in the right subject sorry....
Rina8888 [55]

Answer:

I believe it is

1) b

2) a

3) c

Step-by-step explanation:

I hope this helps, and is right

Have a wonderful night!

4 0
3 years ago
Read 2 more answers
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