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3 years ago

PLEASE HELP I WILL MARK BRAINLYEST. 50 POINTS PLEASE. I WILL REPORT ABSURD ANSWERS. MY QUESTIONS ARE THE IMAGES BELOW

Mathematics

1 answer:

Arturiano [62]3 years ago

3 0

Answer:

1, 3, 4- yes, 2- no

Step-by-step explanation:

Yes, it is function
x-values are unique and each has one corresponding y-value

No, it is not a function
x-values are repeated with different y-value: (13, 4) and (13, -4)

Yes, it is a function
If you put a vertical line, there will always be one intersection with the graph

Yes, it is a function
This will produce a parabola which is a graph of a normal function with unique x-values and corresponding y-values

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ahrayia [7]

Answer:60

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

39. State the equation for the line described below.

devlian [24]

Answer:

Step-by-step explanation:

39). y = $-\frac{7}{8}$ x + 3

40). m = $\frac{y_{2} -y_{1} }{x_{2} -x_{1} }$

y - $y_{1}$ = m( x - $x_{1}$ )

(- 7, 5)

( - 12, 4)

m = ( 4 - 5 ) / ( - 12 + 7) = 1/5

y - 5 = (1/5)(x + 7) ⇒ y = $\frac{1}{5}$ x + 6.4

8 0

3 years ago

Compare 2x+8>18 and 2x+8 greaterthan or equal to 18

Sergio039 [100]

2x + 8 > 18 2x+ 8 ≥ 18
2x > 18 -8     2x ≥ 18 - 8
2x > 10    2x ≥ 10
x > 10/2 x ≥ 10/2
x>5 x ≥ 5

   The answer that combines both inequality is x ≥ 5

6 0

3 years ago

The following angles are supplementary to each other.

Elan Coil [88]

The value of x in given angles is 36°

<h3>What are supplementary angles?</h3>

When the sum of two angles is 180°, then they are said to be supplements of each other.

Given are two angles which are supplements of each other,

Then according to definition of supplementary angles,

m∠A+m∠B = 180°

(2x − 27)°+(3x + 27)° = 180°

2x+3x = 180°

5x = 180°

x = 180°/5

x = 36°

Hence, The value of x in given angles is 36°

For more references on supplementary angles, click;

brainly.com/question/13045673

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4 0

2 years ago

Read 2 more answers

The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is increasing at a rate of 2 cm^2/

VARVARA [1.3K]

Answer:

The base is decreasing at 2 cm/min.

Step-by-step explanation:

The area (A) of a triangle is given by:

$A = \frac{1}{2}bh$ (1)

Where:

b: is the base

h: is the altitude = 10 cm

If we take the derivative of equation (1) as a function of time we have:

$\frac{dA}{dt} = \frac{1}{2}(\frac{db}{dt}h + \frac{dh}{dt}b)$

We can find the base by solving equation (1) for b:

$b = \frac{2A}{h} = \frac{2*120 cm^{2}}{10 cm} = 24 cm$

Now, having that dh/dt = 1 cm/min, dA/dt = 2 cm²/min we can find db/dt:

$2 cm^{2}/min = \frac{1}{2}(\frac{db}{dt}*10 cm + 1 cm/min*24 cm)$

$\frac{db}{dt} = \frac{2*2 cm^{2}/min - 1 cm/min*24 cm}{10 cm} = -2 cm/min$

Therefore, the base is decreasing at 2 cm/min.

I hope it helps you!

7 0

3 years ago