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Elan Coil [88]
3 years ago
10

Helppppp plz people!!!

Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

20

Step-by-step explanation:

x^2/y

Let x=10 and y=5

10^2/5

100/5

20

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50 POINTS Please Help!! I'll mark you as Brainliest if correct!!<br> Question is attached.
jenyasd209 [6]

Answer:

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Step-by-step explanation:

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likoan [24]

Answer:

3a. 84

3b. 150

Step-by-step explanation:

(3*7)+(3*21)

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10*(8+7)

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3 years ago
Find exact values for sin θ and tan θ if cos θ = -4/9 and tan θ &gt; 0.
julsineya [31]

Answer:

Part 1) sin(\theta)=-\frac{\sqrt{65}}{9}

Part 2) tan(\theta)=\frac{\sqrt{65}}{4}

Step-by-step explanation:

we have that

The cosine of angle theta is negative and the tangent of angle theta is positive

That means that the sine of angle theta is negative

step 1

Find sin(\theta)

we know that

sin^{2}(\theta) +cos^{2}(\theta)=1

we have

cos(\theta)=-\frac{4}{9}

substitute

sin^{2}(\theta) +(-\frac{4}{9})^{2}=1

sin^{2}(\theta) +\frac{16}{81}=1

sin^{2}(\theta)=1-\frac{16}{81}

sin^{2}(\theta)=\frac{65}{81}

square root both sides

sin(\theta)=\pm\frac{\sqrt{65}}{9}

Remember that

In this problem the sine of angle theta is negative

so

sin(\theta)=-\frac{\sqrt{65}}{9}

step 2

Find tan(\theta)

we know that

tan(\theta)=\frac{sin(\theta)}{cos(\theta)}

we have

sin(\theta)=-\frac{\sqrt{65}}{9}

cos(\theta)=-\frac{4}{9}

substitute the given values

tan(\theta)=-\frac{\sqrt{65}}{9}:-\frac{4}{9}=\frac{\sqrt{65}}{4}

3 0
3 years ago
If x is a positive integer then the solution set of 4x+2&lt;14 is
taurus [48]
4x + 2 < 14
4x < 14 - 2
4x < 12
x < 12/4
x < 3 S = { x <3 }
3 0
3 years ago
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