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krok68 [10]
2 years ago
14

Determine whether y = -2x² - 3 is a function.

Mathematics
1 answer:
Alexus [3.1K]2 years ago
5 0

Answer:yes

Step-by-step explanation:

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The diagram shows a right-angled triangle.
olga nikolaevna [1]

Answer:

h = 9.87 cm

Step-by-step explanation:

Given that,

Base, b = 8 cm

Height = h

Angle, \theta=51^{\circ}

We need to find the value of h. We can use trigonometry to find h.

\tan\theta=\dfrac{\text{Perpendicular}}{\text{Base}}\\\\\tan(51)=\dfrac{h}{8}\\\\h=\tan(51)\times 8\\\\h=9.87\ cm

So, the height of the triangle is 9.87 cm.

7 0
4 years ago
WILL MARK BRAINLIEST!!! Can someone help me wit des questions? (SHOW UR WORK)
Gennadij [26K]

Answer:

1) x= -2

2) x= 3

3) x=7

4) x>5

5) x=-14

Step-by-step explanation:

1) −3x − 3 −7x = 17

−10x−3=17

−10x=17+3

−10x=20

x= -20/10

x=-2

2) 10x − 6 = 24

10x=24+6

10x=30

x= 30/10

x= 3

3) −4−5x=−39

−5x=−39+4

−5x=−35

x=-35/-5

x= 7

4) 3x - 5 > 10

3x>10+5

3x>15

x>​15/3

x>5

5)  -5 + x + 16 = -3

x+11=−3

x=−3−11

x=-14

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7 0
3 years ago
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Choose whether you would find the percent increase or percent decrease: The marching band had 304 students last year. This year,
kifflom [539]

Answer:

Percent increase

Step-by-step explanation:

Since the number of marching band students increased from 304 to 322, you would find the percent increase.

You wouldn't find the percent decrease because the number of students increased.

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