All categories

3 years ago

Help and explain//////////////////////////////////////////////

Mathematics

2 answers:

Paul [167]3 years ago

5 0

Answer:

5x - 3

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

= 2x + 4 + ( 3x - 7 )

= 5x - 3

erastovalidia [21]3 years ago

4 0

Answer:

(f + g)(x) = 5x - 3

Step-by-step explanation:

(f + g)(x)

= f(x) + g(x)

= 2x + 4 + 3x - 7 ← collect like terms

= 5x - 3

You might be interested in

Consider the continuous random variable x, which has a uniform distribution over the interval from 110 to 150. The probability t

Virty [35]

Answer:

The probability that x will take on a value between 120 and 125 is 0.14145

Step-by-step explanation:

For uniform distribution between a & b

Mean, xbar = (a + b)/2

Standard deviation, σ = √((b-a)²/12)

For 110 and 150,

Mean, xbar = (150 + 110)/2 = 130

Standard deviation, σ = √((150-110)²/12 = 11.55

To find the probability that x will take on a value between 120 and 125

We need to standardize 120 & 125

z = (x - xbar)/σ = (120 - 130)/11.55 = - 0.87

z = (x - xbar)/σ = (125 - 130)/11.55 = - 0.43

P(120 < x < 125) = P(-0.87 < x < -0.43)

We'll use data from the normal probability table for these probabilities

P(120 < x < 125) = P(-0.87 < x < -0.43) = P(z ≤ -0.43) - P(z ≤ -0.86) = 0.33360 - 0.19215 = 0.14145

Hope this Helps!!!

3 0

3 years ago

What is the slope intercept form of 16x+2y=12

-Dominant- [34]

So the slope intercept form is y=mx+b where m is slope and b is y intercept

so 16x+2y=12
subtract 16x from both sides
2y=12-16x
divide both sides by 2
y=-8x+6
slope is -8 and y intercept is 6

8 0

3 years ago

What are the answers to a, b, c, d?

Nezavi [6.7K]

Answer:

Step-by-step explanation:

8 0

3 years ago

I dont know what to do.

Scorpion4ik [409]

Slope= $\frac{ y_{2}- y_{1} }{ x_{2} - x_{1} }$

(3,5) and (1,9)
x1=3
y1=5
x2=1
y2=9

Slope= $\frac{ y_{2}- y_{1} }{ x_{2} - x_{1} }$
Slope= $\frac{ 9- 5 }{ 1 - 3}$
Slope= $\frac{4}{ -2}$
Slope= $-\frac{4}{2} or -2$

Answer:Slope=-2

3 0

3 years ago

What are the solutions of 6x2 + 2x – 20 = 0? x = x =

Darina [25.2K]

6x² + 2x - 20 = 0

3(2x² + x - 10) = 0

3[(2x² - 4x + 5x - 10)] = 0

3[2x(x - 2) + 5(x - 2)] = 0

3(2x + 5)(x - 2) = 0

3=0, 2x + 5 = 0, x - 2 = 0 (Note: 3=0 is false so disregard that equation)

x = $\frac{-5}{2}$ , x = 2

Answer: x = { $\frac{-5}{2}$ , 2}

3 0

3 years ago