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JulsSmile [24]
2 years ago
14

Brian said 78+92+85 is equal to 300 because each addens is close to 100, and three 100s is the same as 300. Explain why Brian's

reasoning is not reasonable.
Mathematics
2 answers:
djyliett [7]2 years ago
6 0

Answer:

Step-by-step explanation:

Brian didn't round up to the nearest hundreds. so there's no chance for him to get his result as 300. If he felt that they're close to 100, he should have rounded up

Flura [38]2 years ago
4 0

Answer:

First off 78+92+85=255 so yeah its not 300. Plus 300 is no where near 100, but yes three 100s is 300.

Step-by-step explanation:

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Aleks [24]

Given that f(x) = 3x^2 + 5, we have

f(x + 3) = 3 (x + 3)^2 + 5 \\\\= 3 (x^2 + 6x + 9) + 5 \\\\= 3x^2 + 18x + 32

so that

f(x+3) - (f(x) + 3) = (3x^2 + 18x + 32) - (3x^2 + 8) \\\\= \boxed{18x + 24}

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2 years ago
Identify sinJ as a fraction and as a decimal rounded to the nearest hundredth.
KiRa [710]

In the given right triangle, the trigonometric ratio, <u>sin J</u> has a fractional value of <u>5/13</u> and a decimal value of <u>0.39</u>.

In trigonometry, for a right triangle, the <u>sine</u> (sin) of any angle θ is given as the ratio of its opposite side to the hypotenuse of the triangle, that is, sin θ = (opposite side)/(hypotenuse).

In the question, we are asked to find the trigonometric ratio, sin J, for the given right triangle JKL.

The side opposite to angle J is KL, which has a value of 3 units.

The hypotenuse of the given right triangle is JK, which has a value of 7.8 units.

Thus, sin J can be calculated as:

sin J = KL/JK = 3/7.8 = 5/13 = 0.39.

Thus, in the given right triangle, the trigonometric ratio, <u>sin J</u> has a fractional value of <u>5/13</u> and a decimal value of <u>0.39</u>.

Learn more about trigonometric ratios at

brainly.com/question/20367642

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8 0
1 year ago
Which of these are the intercepts of the graph of y = 3x – 12?
charle [14.2K]
Y intercept is (0,-12), the x-intercept is (4,0)
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3 years ago
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Ede4ka [16]

Answer:

The answer is C

Hope this helped!

7 0
2 years ago
Edith needs 65 yards of yarn to knit a baby hat and 580 yards of yarn to knit a baby blanket. A ball of yarn contains 420 feet o
umka2103 [35]

Answer:

  5

Step-by-step explanation:

There are 3 feet in a yard, so 420 feet is 420/3 = 140 yards.

The total number of yards Edith needs is ...

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So, the total number of balls of yarn Edith needs is ...

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Edith needs to buy 5 balls of yarn to make her projects.

3 0
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