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2 years ago

Find the value of x.

Mathematics

2 answers:

IRINA_888 [86]2 years ago

6 0

Answer:

add 5 to 8 then subtract 86 from 80 the divide you should get x=2

S_A_V [24]2 years ago

5 0

Answer:

x=2

Step-by-step explanation:

-5x+80 = 86 + -8x

Add 8x to each side

-5x+8x+80 = 86 + -8x+8x

3x+80 = 86

Subtract 80 from each side

3x+80-80 = 86-80

3x=6

Divide by 3

3x/3 = 6/3

x =2

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You roll a fair 6-sided die. what is the probability rolling greater than 4

Readme [11.4K]

Answer:

1/3

Step-by-step explanation:

There are 6 possible outcomes when you roll this die: 1,2,3,4,5 and 6. Of these, only 5 and 6 are greater than 4, which is 2 successful outcomes. Probability is successful outcomes/total outcomes = 2/6 = 1/3. Hope this helps!

6 0

3 years ago

This parabola has<br> x-intercepts

slega [8]

Answer:

see the explanation

Step-by-step explanation:

we have the quadratic equation

$y=-16x^{2} +32x-10$

This is a vertical parabola open downward

The vertex is a maximum

Find the x-intercepts of the quadratic equation

The x-intercepts are the values of x when the value of y is equal to zero

For y=0

$-16x^{2} +32x-10=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16x^{2} +32x-10=0$

$a=-16\\b=32\\c=-10$

substitute in the formula

$x=\frac{-32(+/-)\sqrt{32^{2}-4(-16)(-10)}} {2(-16)}$

$x=\frac{-32(+/-)\sqrt{384}} {-32}$

$x=\frac{-32(+/-)8\sqrt{6}}{-32}$

$x=\frac{-32(+)8\sqrt{6}}{-32}=\frac{32(-)8\sqrt{6}}{32}=0.39\ sec$

$x=\frac{-32(-)8\sqrt{6}}{-32}=\frac{32(+)8\sqrt{6}}{32}=1.61\ sec$

therefore

This parabola has two x-intercepts representing the times when the dolphin's height above water is zero feet

8 0

2 years ago

Read 2 more answers

F(x) = 5x^2 + 9x – 4<br> g(x) = – 8x^2 – 3x – 4<br> Find (f + g)(x).

svp [43]

Answer:

(f + g)(x) = – 3x^2 + 5x - 8

Step-by-step explanation:

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

= 5x^2 + 9x – 4 + (– 8x^2 – 3x – 4)

= 5x^2 + 9x – 4 – 8x^2 – 3x – 4

Combine

= – 3x^2 + 5x - 8

3 0

2 years ago

In which sentence is the underlined word the proper adjective formed from China? A. The China's athlete won a gold medal in the

Alik [6]

The answer is B because thats the correct way to use a proper adjective

6 0

3 years ago

PLEASE HELP!!!!To make waffles, you need 2 cups of water for every 3 cups of flour. Write an equivalent ratio to find how much w

Paha777 [63]

2/3=x/9 or 2/3=6/9. I hope this helps.

4 0

3 years ago