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2 years ago

What is the product? (y3+3y+7) x (8y2+y+1)

Mathematics

1 answer:

Nataly [62]2 years ago

5 0

Answer:

I believe that this is what you mean. (y^3+3y+7)*(8y^2+y+1)

Step-by-step explanation:

So your answer would be: 8y^5+y^4+25y^3+59y^2+10y+7

Have a nice day!

I really hope this helps!

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Y² - 11y + 21.25 = 0

Elodia [21]

Answer:

y=17/2 y=5/2

Step-by-step explanation:

...................

7 0

3 years ago

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Angles 1 and 2 are an example of<br> angles.

natka813 [3]

Answer:

veritcal angles

Step-by-step explanation:

6 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

Hey, can someone help me with this please?! Thank you!

gtnhenbr [62]

Answer:

5. p= -4

6. d=4.3

Step-by-step explanation:

if you need to know how to do it lmk and I'll update it in the step by step explanation!

hope this helped :)

UPDATED

-0.9p+3.2=-1.7p

subtract add 0.9p to both sides

3.2=-0.8p

divide both sides by -0.8 to isolate p

-4=p

-14.3=-1.4-3d

add 1.4 by both sides

-12.9=-3d

divide both sides by -3 to isolate d

4.3=d

4 0

2 years ago

Can you help me please

cluponka [151]

Answer:

(2, 3)

Step-by-step explanation:

because the triangle moved 2 times to the right (x) and 3 times higher (y)

3 0

2 years ago