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2 years ago

Find the value of the expression 2x3 + 3y2 − 17 when x = 3 and y = 4. A)26 B)85 C)943 D)1,927

1 answer:

3 0

Ok so assumin by 2x3 you mean 2x^3 or 2 times x cubed

PEMDAS
parenthasees
exponentes
multiply
divide
add
subtract

exponents

we have
2(3)^3+3(4)^2-17
exonents
3^3=27
4^2=16

now we have
2(27)+3(16)-17
distribute (multply)
2 tiems 27=54
3 times 16=48

now we have
54+48-17
add/subtract
85

answer is 85

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kondaur [170]

Answer:

3000

Step-by-step explanation:

2000 x 9 = 18000

18000 divided by 6 is 3000

7 0

1 year ago

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I don't get this can someone help me?

Anna71 [15]

I don't really know how to explain it to you but what I can tell you is that in 1 centigram there are 10 milligrams.

4 0

2 years ago

<img src="https://tex.z-dn.net/?f=%20%5Clarge%7B%5Cbold%20%5Cred%7B%20%5Csum%20%5Climits_%7B8%7D%5E%7B4%7D%20%7Bx%7D%5E%7B2%7D%2

kiruha [24]

Answer:

No solution

Step-by-step explanation:

We have

$\sum_{x=8}^{4}x^2 + 9\left(\dfrac{\cos^2(\infty)}{\sin^2(\infty)} \right)$

For the sum it is not correct to assume

$\sum_{x=8}^{4}x^2= 8^2 + 7^2+6^2+5^2+4^2 = 64+49+36+25+16 = 190$

Note that for

$\sum_{x=a}^b f(x)$

it is assumed $a\leq x \leq b$ and in your case $\nexists x\in\mathbb{Z}: a\leq x\leq b$ for $a>b$

In fact, considering a set $S$ we have

$\sum_{x=a}^b (S \cup \varnothing) = \sum_{x=a}^b S + \sum_{x=a}^b \varnothing$ that satisfy $S = S \cup \varnothing$

This means that, by definition $\sum_{x=a}^b \varnothing = 0$

Therefore,

$\sum_{x=8}^{4}x^2 = 0$

because the sum is empty.

For

$9\left(\dfrac{\cos^2(\infty)}{\sin^2(\infty)} \right)$

we have other problems. Actually, this case is really bad.

Note that $\cos^2(\infty)$ has no value. In fact, if we consider for the case

$\lim_{x \to \infty} \cos^2(x)$ , the cosine function oscillates between $[-1, 1]$ , and therefore it is undefined. Thus, we cannot evaluate

$9\left(\dfrac{\cos^2(\infty)}{\sin^2(\infty)} \right)$

and then

$\sum_{x=8}^{4}x^2 + 9\left(\dfrac{\cos^2(\infty)}{\sin^2(\infty)} \right)$

has no solution

7 0

2 years ago

babunello [35]

Answer:

B. $y = 3x - 4$

Step-by-step explanation:

First, using two points (0, -4) and (3, 5), find slope:

$m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{5 -(-4)}{3 - 0} = \frac{9}{3} = 3$

Slope, m = 3

Next, determine the y-intercept, b.

The y-intercept is the value of y when x = 0. It is the point where the line intercepts the y-axis.

From the graph given, y-intercept, b, is -4.

Substitute b = -4 and m = 3 into $y = mx + b$ .

The equation would be:

✔️ $y = 3x - 4$

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2 years ago

Carmen has 54 golf balls. He wants to put the same number of balls into each of

goldenfox [79]

Answer:

Step-by-step explanation:

So, carmen has 54 golf balls. He wants to put the same number of balls into each of 9 buckets.So, 54 divided by 9 is 6

the answer is 6

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3 years ago

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