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serg [7]
3 years ago
6

Describe the mental math steps you would use to find 7(42) (this is the distributive property by the way. :] )

Mathematics
2 answers:
Zarrin [17]3 years ago
5 0

Answer: 294

Break up 42 like so: 42 = 40 + 2

Then we can say,

7*(42) = 7*(40+2) = 7*40 + 7*2 = 280 + 14 = 294

The mental math part is knowing that 7*4 = 28, then you add on a zero to get 7*40 = 280. This is added to 7*2 = 14 to get the final answer above.

Katarina [22]3 years ago
3 0

Answer:

multiply 7 by 42

= 294

42 x 7 can be done as mental math, but that is challenging for some people.

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Use the graph of f below. Assume the entire function is graphed below.<br> Find the domain
enot [183]

ANSWER

The domain of the function is

- 3 \leqslant x \leqslant 6

or

[-3,6]

EXPLANATION

The domain of a function refers to the values of x for which the function is defined.

From the graph, we can see that the function begins at (-3,6) and ends at (6,-4).

Therefore the function is defined for x=-3 to x=6.

Hence the domain of the function is

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[-3,6]

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fenix001 [56]

Any line with a slope of -1/9 will be parallel

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3 years ago
Oakland Middle School has 128 6th
adoni [48]

Answer:

36 teachers

Step-by-step explanation:

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8 0
2 years ago
Find the circumference and area of a circle with a diameter of 10 inches leave answers in terms of pi
Umnica [9.8K]

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
Damian works after school. Each
nadya68 [22]

Answer:

f(x) = 12x = 10

Step-by-step explanation:

We need a linear equation in the slope-intercept form.

y = mx + b

where y = total pay, m = hourly salary, x = number of hours worked, and b = y-intercept, or initial value

Let's look in the table.

1 hour: $22

2 hours: $34

The difference in pay between 1 hour and 2 hours is $34 - $22 = $12.

The difference in time between 1 hour and 2 hours is 1 hour.

In 1 hour he earns $12. That means the slope is 12.

We know he earns $22 for working a total of 1 hour.

Start at 1 hour and $22 on the table.

Subtract 1 hour from 1 hour to get 0 hours.

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The equation is

y = 12x + 10

In function form, we have:

f(x) = 12x = 10

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3 years ago
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