I need help with this question I would be grateful really

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

6 0

Answer:

Step-by-step explanation:

the vertex is (-5,-2) which eliminates A and C. D says that the x intercepts are both positive which is obviously incorrect making B the correct answer

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Solve the equation exactly overbthe interval [0,360) Sin^2x-cos^2x=0

trasher [3.6K]

$\bf sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)\\\\
-----------------------------\\\\$

$\bf sin^2(x)-cos^2(x)\implies sin^2(x)-[1-sin^2(x)]=0
\\\\\\
sin^2(x)-1+sin^2(x)=0\implies 2sin^2(x)=1\implies sin^2(x)=\cfrac{1}{2}
\\\\\\
sin(x)=\pm\sqrt{\cfrac{1}{2}}\implies \measuredangle x=sin^{-1}\left( \pm\sqrt{\cfrac{1}{2}} \right)\iff \measuredangle x=sin^{-1}\left( \pm\cfrac{\sqrt{2}}{2} \right)
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\measuredangle x=
\begin{cases}
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\frac{3\pi }{4}\\\\
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8 0

3 years ago

What is -5/8 / 9/10 ? A. -25/36 B. -9/16 C. -45/80 D. -1/36

Ivenika [448]

Hi there, -5*10/9*8=-50/72, -50/72 simplified is -25/36. Therefore, the answer is A. -25/36

4 0

3 years ago

Please help will mark Brainliest Can y’all give a mini explanation too

statuscvo [17]

Its 12!!! uhm i have no explanation sorry...

4 0

3 years ago

Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively determine whether there appears

Alex

Answer:

Which is the output of the formula =AND(12>6;6>3;3>9)?

TRUE

FALSE

Step-by-step explanation:

5 0

3 years ago

You are to give an injection of a drug. The dosage is 0.4 mg per kilogram of bod The concentration of the drug in vial is listed

shusha [124]

Answer:

We inject 60.9628 milliliters of dosage.

Step-by-step explanation:

Given : You are to give an injection of a drug. The dosage is 0.4 mg per kilogram of bod The concentration of the drug in vial is listed as 500 ug/ml. The patient's chart Hosts weight as 168 pounds.

To find : How many milliliters (= cc) are you to inject?

Solution :

We know that,

1 pound = 0.453592 kg,

Patient's weight = 168 pounds

Patient's weight in kg = $168\times 0.453592=76.203456$ kg