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3 years ago

4. 2x2 + 4x + 10 = 0

Mathematics

1 answer:

Sliva [168]3 years ago

8 0

Answer:

??? Ok so whats the question??

Step-by-step explanation:

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Break apart addendsas tens and ones <br> 33<br> +49

Serhud [2]

Answer:

There are 8 tens and 2 ones

Step-by-step explanation:

Hope this helps

5 0

3 years ago

A restaurant offers 8 appetizers, 12 main courses, and 6 desserts. How many possible meals consisting of 1 appetizer, 1 main cou

Darya [45]

Answer:

576

Step-by-step explanation:

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4 years ago

Prove each statement that is true and ﬁnd a counterexample for each statement that is false. Assume all sets are subsets of a un

tekilochka [14]

Answer with Step-by-step explanation:

We are given that A, B and C are subsets of universal set U.

We have to prove that

$A\cap (B-C)=(A\cap B)-(A\cap C)$

Proof:

Let x $\in A\cap (B-C)$

Then $x\in A$ and $x\in(B-C)$

When $x\in ( B-C)$ then $x\in B$ but $x\notin C$

Therefore, $x\in( A\cap B)$ but $x\notin (A\cap C)$

Hence, it is true.

Conversely , Let $x\in(A\cap B)$ but $x\notin(A\cap C)$

Then $x\in A$ and $x\in B$

When $x\notin ( A\cap C)$ then $x\notin C$

Therefor, $x\in A\cap (B-C)$

Hence, the statement is true.

5 0

3 years ago

The measurement of one angle of a right triangle is 34º.

lorasvet [3.4K]

A triangle's angles always add up to a total 180º, and a right triangle always has an angle equal to 90º.

90º + 34º + xº = 180º

124º + xº = 180º

xº = 56º

7 0

3 years ago

Evaluate the line integral, where c is the given curve. c y3 ds,<br> c.x = t3, y = t, 0 ≤ t ≤ 4

vivado [14]

The path $C$ is parameterized by

$\mathbf r(t)=\langle x(t),y(t)\rangle=\langle t^3,t\rangle$

with $0\le t\le4$ .

We have

$\dfrac{\mathrm d\mathbf r}{\mathrm dt}=\langle3t^2,1\rangle$
$\left\|\dfrac{\mathrm d\mathbf r}{\mathrm dt}\right\|=\sqrt{9t^4+1}$

So the line integral is

$\displaystyle\int_Cy^3\,\mathrm dS=\int_{t=0}^{t=4}t^3\sqrt{9t^4+1}\,\mathrm dt$

Substitute $u=9t^4+1$ , so that $\mathrm du=36t^3\,\mathrm dt$ .

$=\displaystyle\frac1{36}\int_{u=1}^{u=2305}\sqrt u\,\mathrm du$
$=\dfrac{2305^{3/2}-1}{54}$
$\approx2049.31$

3 0

3 years ago

4. 2x2 + 4x + 10 = 0​

4. 2x2 + 4x + 10 = 0