What is the value of the expression below when w equals
8?
W^2- 4w - 2

Answers

Answer 1

Answer:

When w =8. then...

8^2-4(8)-2.

64-32-2=30.

Answer 2

Answer:

Step-by-step explanation:

Plug in the value of w in the expression and use PEMDAS

w² - 4w - 2 = 8² - 4*8 - 2    {Need to calculate exponents}

                   = 64 - 4*8 - 2  {Now do multiplication}

                   = 64 -  32 - 2

                 =   32 - 2

                 = 30


Related Questions

Which expression gives the distance between the points (3, -8) and (3, -19)? *
1 point
Captionless Image
|3 - 3|
|-19 - (-8)|
|3 + (-19)|
|3 - (-8)|
| 3 + (-19) |

Answers

Answer:

| - 19 - (- 8) |

Step-by-step explanation:

Given that the 2 points have the same x- coordinate, then the distance between the 2 points is the difference in the y- coordinates, that is

distance = | - 19 - (- 8) | = | - 19 + 8 | = | - 11 | = 11

Or

distance = | - 8 - (- 19) | = | - 8 + 19 | = | 11 | = 11

(x - 6)^2 - 5 = 0 Enter the solutions from least to greatest.

Answers

Answer:

x=6- sqrt(5)

x=6+ sqrt(5)

Step-by-step explanation:

(x - 6)^2 - 5 = 0

Add 5 to each side

(x - 6)^2 =5

Take the square root of each side

sqrt((x - 6)^2)  =± sqrt(5)

x-6 =  ± sqrt(5)

Add 6 to each side

x-6+6=6± sqrt(5)

x=6± sqrt(5)

from least to greatest

x=6- sqrt(5)

x=6+ sqrt(5)

Answer:

[tex]\Large \boxed{ x=6 -\sqrt{5} \ \ \mathrm{or} \ \ x=6 + \sqrt{5}}[/tex]

Step-by-step explanation:

[tex](x - 6)^2 - 5 = 0[/tex]

Adding 5 to both sides of the equation.

[tex](x - 6)^2 =5[/tex]

Taking the square root of both sides of the equation.

[tex]x-6 =\pm \sqrt{5}[/tex]

Adding 6 to both sides of the equation.

[tex]x=6 \pm \sqrt{5}[/tex]

How would you express b⃗ using unit vectors? express your answers in terms of the unit vectors x^ and y^. use the unit vector button under the templates menu in the answer box to create unit vectors?

Answers

Answer:

This question seems to be incomplete, so i will answer it in a general way.

If we have a vector;

b = (b1, b2)

where b1 and b2 are the x-component and the y-component (respectively) of the vector b, then we can write the vector as:

b = (b1, b2) = b1*x^ + b2*y^

Where x^ = (1, 0) and y^ = (0, 1)

Are the unit vectors.

What is the solution to 4(2x - 1) = 20?
Enter your answer in the box.
X=

Answers

Answer:

x=3

Step-by-step explanation:

4(2x - 1) = 20

Divide each side by 4

4/4(2x - 1) = 20/4

2x-1 = 5

Add 1 to each side

2x-1 +1 = 5+1

2x= 6

Divide by 2

2x/2 = 6/2

x = 3

Answer:

[tex]x=3[/tex]

Step-by-step explanation:

Use the distributive property to expand the left side:

[tex]a(b-c)\\\\ab-ac[/tex]

Simplify:

[tex]4(2x-1)=20\\\\4(2x)-4(1)=20\\\\8x-4=20[/tex]

Isolate the variable, x. Add 4 to both sides of the equation:

[tex]8x-4+4=20+4\\\\8x=24[/tex]

Now divide both sides by 8:

[tex]\frac{8x}{8} =\frac{24}{8}\\\\ x=3[/tex]

The value of x is 3.

:Done

· f(x) = 3x4 - 4x2 + 2

Answers

Answer:

If the x is a multiplying sign then the answer is 6, but

if the x is the letter x then it will be x=4

Answer:

theres 8

Step-by-step explanation:

Graph this function:
y–3=2(x–5)

Answers

Here you go. This is the graph of the function:

y - 3 = 2(x - 5)

Answer:

slope = 2  y intercept = ( 0, -7 )

Step-by-step explanation:

x       y

0      -7

7/2    0

The product of two numbers subtracted by 44, the result is 100. Find the numbers.​

Answers

Answer: the numbers can be 16 and 9, 6 and 24 or other factors of 144

if 25^x+1 = 125/5^x find the value of x

Answers

Answer:

x =1/3

Step-by-step explanation:

25ˣ⁺¹ = 125/5ˣ

5²⁽ˣ⁺¹⁾ = 5³/5ˣ

5²⁽ˣ⁺¹⁾ = 5³ : 5ˣ

5²⁽ˣ⁺¹⁾ = 5³⁻ˣ

2(x + 1) = 3 - x

2x + 2 = 3 - x

2x + x = 3 - 2

3x = 1

x = 1/3

Bob and bart plan to buy one computer for $500 strictly for gaming purposes. Games cost $60 each

Answers

Answer:

500+60g

Step-by-step explanation:

This is the answer because every game costs $60 and you represent everytime you buy a game by using 60g. And you can't put 500 g because that is not what each game costs 500 represents how much the computer is.

Use interval notation to identify the range of the exponential function
y=-3^x-2+4
HELP

Answers

Answer:

Hey there!

The range is (-∞, 2)

Hope this helps :)

5. Daniel is driving at a speed of 1 kilometer
per minute. Approximately how fast is he
traveling in miles per hour?
mi
A 0.62
C 37
hr
mmmm
B 1.6
mi
hr
D 96

Answers

Answer:

c. 37

Step-by-step explanation:

I just looked it up lol. hope this helps tho :p

if 3 point A,B, and C are collinear and B is between A and C then?

Answers

Step-by-step explanation:

Collinear points: Three points A, B and C are said to be collinear if they lie on the same straight line. There points A, B and C will be collinear if AB + BC = AC as is clear from the adjoining figure.

Which fraction is equivalent to that number? HELP NEEDED ASAP

Answers

Answer:

2/3

Step-by-step explanation:

Let n = the repeating, non-terminating number 0.666...

We now have n = 0.666666...

We want the number n in the form of a fraction.

Since only 1 digit repeats, the 6, use a 1 followed by 1 zero, which means the number 10. Now multiply both sides by 10 and write the original equation below it.

10n = 6.666666...

   n = 0.666666...

Subtract the bottom equation from the top equation.

9n = 6

n = 6/9

n = 2/3

-7-5+3=1 ? true or false

Answers

False would be the answer
When you add the negatives;
-7 and -5 you get -12.
-12 + 3 = -9
-9 doesn’t equal 1
So FALSE

Pat wants to measure the length of a table. She'll use a measuring tape. Which units should Pat use to express the length?

A. Pints
B. Degress
C. Inches
D. Moles​

Answers

Answer:

Inches is the best answer

Step-by-step explanation: This is because it is the only one that actually makes sense in the context of the question. Pint is for liquids, degrees is for angles, and moles is for molecules.

c.
inches is the right answer

Is the following relation a function?

Answers

Answer:

no

Step-by-step explanation:

S=(n-2) * 180. Solve for n.

Answers

Answer: n = S/180 + 2

Step-by-step explanation:

Answer:N=2+1/180s

How to solve: s=180n-360
You move the terms and divide by both sides by -180

An archer hits a bullseye 64% of the time. What is the probability the archer hits
the bullseye exactly 4 times during 10 total attempts?
a. 242
b. .365
C..077
d. 168

Answers

Answer:

C. 0.077

Step-by-step explanation:

Use binomial probability.

P = nCr pʳ qⁿ⁻ʳ

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1−p).

n = 10, r = 4, p = 0.64, q = 0.36.

P = ₁₀C₄ (0.64)⁴ (0.36)⁶

P = 210 (0.64)⁴ (0.36)⁶

P = 0.077

-(1+7x)-6(-7-x)=36


HELP

Answers

-1-7x-6(-7-x)=36
-1-7x+42+6x=36
41-7x+6x=36
41-x=36
-x=36-41
-x=-5
Answer: x=5

Answer:

x=5 Brainliest would be nice :)

Step-by-step explanation:

Emily is saving up to buy a new phone. She already has $75 and can save an
additional $7 per week using money from her after school job. How much total
money would Emily have after 4 weeks of saving? Also, write an expression that
represents the amount of money Emily would have saved in w weeks.

What would the saving be after 4 weeks?

Saving after w weeks?

Answers

Equation t= $7 times w

$7 times 4 = $28

Answer: saving after 4 weeks: 103

Saving after w weeks:7w+75

is 7/8 natural, whole, integer, rational, irrational​

Answers

This would be a rational number, for it equals 0.875

A cross section is defined as where a —————
intersects a 3-D shape.

Answers

Answer:

plane intersects a 3D shape

For how many games is the total cost of bowling equal for the two bowling establishments? Family bowling, game $4, shoes $1. Knight owl bowling, game $3.75, shoes $2.

Answers

$2^4785733858979-|&duts7stpzo64suprxxruxpu5dp7d058d805d0y7f

What is the range of the function graphed below?

Answers

Answer: C   -3< y ≤ 3

Step-by-step explanation:

Starting from the lowest point of the  y coordinate to the highest point of the y coordinate. The lowest point is -3 and highest point is 3.At the y coordinate -3 there is an open circle which means we are excluding it and at the highest point 3 there is a closed circle so we will have to include that.

8 grade math dont really uderstand it so please explain also

Answers

Answer: Girls weekly: 25; Girls never:40; boys yearly: 25; boys never: 20; boys total:80 monthly total: 30

Step-by-step explanation:

You have to figure it out by adding or subtracting where ever it needs to be like in girls weekly you have to subtract the weekly total and the boys weekly to figure it out.

– 5 | 3 z + 8| –5 = -20​

Answers

I'm assuming you want to solve for  z  :)

By simplifying both sides of the equation, then isolating the variable.

Exact form:

z= -5/3 , - 11/3

Mixed number form:

z=  −1  2/3  ,  −3  2/3

Answer:

There are two solutions, -5/3 and -11/3

Step-by-step explanation:

Move -5 to the right side and add:

-5 | 3x + 8 | = -15

Get rid of the absolute-value bars by splitting them into negative and positive cases.

Solve negative case

-5 ( 3z + 8 ) = -15

Distribute or Multiply:

-15z - 40 = -15

Rearrange and Add:

-15z = 55

Divide both sides by 15:

-z= 11/3

Multiply both sides by -1:

z= -11/3

Solve negative case

5 ( 3z + 8 ) = -15

Distribute or Multiply:

15z + 40 = 15

Rearrange and Add:

15z = -25

Divide both sides by 15:

z = -(5/3)

Answer

z=-11/3

z=-5/3

(5y+3)(4y+9)=66 What is the value of y

Answers

Answer:

y = 39/20

Step-by-step explanation:

(20y + 27 = 66

20y = -27 + 66

20y =39

y = 39/20

Find the equation of the parabola with its focus shown below. GRAPH ATTACHED, 15 POINTS! Due in 2 hours, will give BRAINLIEST!

Answers

Answer:

Solution : Option A

Step-by-step explanation:

Let' go through all the options we have here.

• x + 2 = - 1 / 8y² converted into standard form will be 4(- 2)(x - (- 2)) = (y - 0)². The parabola properties will be similar to the ones of this parabola, vertex = (- 2,0) and focal length = - 2. It hence is most likely to be the parabola provided to us.

• y = 1 / 8(x + 2)² is an up - down facing parabola, and hence is not at all similar to the given parabola

• x - 2 = 1 / 8y² will be a graph reflected over the y - axis with respect to the graph x + 2 = - 1 / 8y². It hence does not match the given parabola

•  y = 1 / 8(x + 2)² will be a graph reflected over the x - axis with respect to the graph of y = 1 / 8(x + 2)². It will hence be a down - up facing parabola, which does not match the given parabola

Pls help ASAP! I will make you brainliest!! (Number 12.)

Answers

Answer:

The lengths of the sides are 30 ft, 60 ft, 15 ft, 45 ft

Step-by-step explanation:

The perimeter is 150 ft, the length of the fence.

We add the lengths of the sides and set equal to the perimeter. Then we solve for x. Once we know x, we find the length of each side.

x + 2x + 0.5x + 45 = 150

3.5x = 105

x = 105/3.5

x = 30

Lengths of sides:

x = 30

2x = 2(30) = 60

0.5x = 0.5(30) = 15

45

Answer: The lengths of the sides are 30 ft, 60 ft, 15 ft, 45 ft

Put the following equation of a line into slope-intercept form, simplifying all
fractions.
2x +y = -5

Answers

Answer:

All you have to do is break it down

Step-by-step explanation:

2x+y=-5

y =2x-5

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