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3 years ago

9

Quick i need your help !

2 answers:

Marianna [84]3 years ago

8 0

Answer:

30 po brainliest answer po ty

butalik [34]3 years ago

4 0

Answer: 30

Step-by-step explanation:

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All of the following are rational except<br> Sqrt 0.49<br> Sqrt 19<br> Sqrt 900<br> Sqrt 100

Anna71 [15]

Answer:

0.49

Step-by-step explanation:

for it to be rational there should not be no decimal nor pi .

3 0

3 years ago

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What’s the exact value of sec 6pi

Komok [63]

Step-by-step explanation:

$\because \sec \: \pi = 1 \\ \\ \therefore \: \sec \: 6\pi = 1 \\$

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3 years ago

the equation -2x^2+3=-9x is rewritten in the form of -2(x-p)^2 +q=0. What is the value of q?the equation -2x^2+3=-9x is rewritte

Novosadov [1.4K]

Value of q is $\frac{105}{8}$ .

<u>Step-by-step explanation:</u>

We have , the equation $-2x^2+3=-9x$ is rewritten in the form of $-2(x-p)^2 +q=0$ . We need to find What is the value of q . Let's find out:

Let's simplify equation $-2x^2+3=-9x$ into $-2(x-p)^2 +q=0$ :

⇒ $-2x^2+3=-9x$

⇒ $-2x^2+9x+3=0$

⇒ $2x^2-9x=3$

⇒ $2(x^2-\frac{9}{2}x)=3$

⇒ $(x^2-\frac{9}{2}x)=\frac{3}{2}$

⇒ $(x^2-2(1)\frac{9}{4}x)=\frac{3}{2}$

⇒ $(x^2-2(1)\frac{9}{4}x) + (\frac{9}{4})^2=\frac{3}{2} + (\frac{9}{4})^2$

⇒ $(x-\frac{9}{4})^2=\frac{3}{2} + (\frac{81}{16})$

⇒ $(x-\frac{9}{4})^2=\frac{24}{16} + (\frac{81}{16})$

⇒ $(x-\frac{9}{4})^2=\frac{105}{16}$

⇒ $-2(x-\frac{9}{4})^2=-2(\frac{105}{16})$

⇒ $-2(x-\frac{9}{4})^2=-\frac{105}{8}$

⇒ $-2(x-\frac{9}{4})^2+\frac{105}{8} = 0$

Comparing this equation to $-2(x-p)^2 +q=0$ , $q =\frac{105}{8}$ .

Therefore ,Value of q is $\frac{105}{8}$ .

8 0

3 years ago

Which graph is the graph of y=1/3x−4?

sertanlavr [38]

I hope this helps. If not, feel free to leave a feedback. also leave a comment if it helped.

8 0

4 years ago

Please telll me ASAP

erica [24]

the answer is y=-2x+5

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3 years ago