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2 years ago

3. 813 - 516 Regrouping with subtraction

Mathematics

1 answer:

Eddi Din [679]2 years ago

6 0

Answer:

297

Step-by-step explanation:

very simple

813

-516

297

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Write a linear function f with the values f(0) =10 and f(6) =34.

LUCKY_DIMON [66]

Answer:

f(x) = 4x + 10

Step-by-step explanation:

The given information is in the form f(x) = y.

f(0) = 10 means if x is 0, y is 10. This is the point (0,10)

Likewise, f(6) = 34

means when x is 6, y is 34. That is the point (6,34).

Slope is y-y / x-x

34-10 / 6-0

is 24/6.

The slope is 4.

The y-intercept is where x is 0, that is 10.

y=mx+b is slope-intercept form. Fill in the slope, 4 for m and the y-intercept, 10, for b.

y = 4x + 10

but they also asked to call it f, so for function notation, use f(x) instead of y.

f(x) = 4x + 10

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1 year ago

Need help with this question.

kicyunya [14]

My guess is B since you need a formula to put them together and have it organized

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3 years ago

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Which statement describes the concept of number sense?

Alinara [238K]

When we say number sense, this refers to someone who clearly understands the meaning of numbers and its relationships. Meaning, he can easily perform mathematical activities and even apply this in real life. Therefore, the answer to the question above is option D.

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3 years ago

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Eric can run a mile in 4.23 minutes, and benjamin can run 4.23 miles in an hour. who is the faster runner?

Ber [7]

Eric is faster since in an hour he can run
60x4.23 which is almost 254 miles in that one hour

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3 years ago

What factors multiply to -1 but add to 1

juin [17]

Let the two factors be x and y.
Two factors that multiply to -1: $xy = -1$
Two factors that add to 1: $x + y = 1$
From the second equation: $x = 1-y$
Plug x back into the first equation: $(1-y)(y) = -1 \\ y-y^2 = -1 \\ y^2-y-1 = 0$
There are no binomial pairs that result in this quadratic. Thus we must use the quadratic formula.
$y^2-y-1=0$
$\frac{-b+- \sqrt{b^2-4ac} }{2a} \\ \\ \frac{1 +- \sqrt{1-4(1)(-1)} }{2} \\ \\ \frac{1 +- \sqrt{5} }{2}$

x = -y = $\frac{1 +- \sqrt{5} }{2}$
Either x or y could be the positive factor. The other variable would have to be the negative factor.

Just a sidenote: $\frac{1 +- \sqrt{5} }{2}$ is actually called the "Golden Ratio" because the ratio is found so often in beautiful example in nature.

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2 years ago

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