how to expand 5 (y + 4)

Answer:

It is not a solution.

Step-by-step explanation:

y = 2x - 4

2 = 2(3) - 4

2 = 6 - 4

2 = 2

The point is a solution to the first equation.

3x + 2y = 8

3(3) + 2(2) = 8

9 + 4 = 8

11 ≠ 8

The point is only a solution for one equation. It is not a solution to the system.

Hope this helps.

Answer:

Step-by-step explanation:

1. $5

2. 50 cents

3. 25 cents

4. 3 dollars

5. 70 cents

just subtract them

Answer:

The confidence interval will be given by:

[tex]200000 \pm 44.72z[/tex], in which z is related to the confidence level.

For a confidence level of x%, z is the value in the z-table that has a pvalue of [tex]1 - \frac{1 - z}{2}[/tex]

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In the context of this problems:

It means that the sampling distributions of the sample mean of 500 components will be approximated normal, with mean 200,000 and standard deviation [tex]s = \frac{1000}{\sqrt{500}} = 44.72[/tex]

To build the confidence interval:

The confidence interval for the average length of life of the electronic components they produced will be given by:

[tex]200000 \pm 44.72z[/tex], in which z is related to the confidence level.

For a confidence level of x%, z is the value in the z-table that has a pvalue of [tex]1 - \frac{1 - z}{2}[/tex]

Answer:

9*b=36

Step-by-step explanation:

Or b=36/9 =>4

..........

Answer:

9*b=36

Step-by-step explanation:

if you could do the math yourself it would turn out to be 9*b=36

Answer:

- 279x^7

Step-by-step explanation:

Answer:

1953

Step-by-step explanation:

9x7(8+23)

PEMDAS

P()

E 4

M x

D ÷

A+

S-

(8+23)=31

9x7=63

63x31=1953

Answer: you got the two right, the third is incorrect and the fourth is correct

Step-by-step explanation: I took the quiz hope I pulled some weights off your shoulders

Answer:

B

Step-by-step explanation:

I know why im smart im in college

all a on my grades is B trust me

Answer:

- 2

Step-by-step explanation:

f(1) = - 2

Answer:75

Step-by-step explanation:

180-64 gives you the angle not labelled which is 116 then to work out size of angle formula is 180(n-2) n being sides so 180(6-2) = 720 so 720 minus all the angles = 75 I think lol

Answer:

x = 75

Step-by-step explanation:

180-64 = 116

Since this is a hexagon (6 vertices), the angles all add up to 720

116 + 121 + 155 + x + 90 + 163 = 720

x + 645 = 720

x = 75

Answer:

(4x+3)(x+3)

Step-by-step explanation:

Answer:

the answer can be 1.667 or -4

Answer:

Step-by-step explanation:

DBE=154.5

bc it a 90angle and so you subtract it with 64.5

ABE= 244.5

so now you have to 154.5 and you just need to plus it to the 90 angle which is 244.5

Answer:

Step-by-step explanation:

Divide it into a 3-by-3 square and a right triangle with legs that are 3 and 4.

area of square = 3² = 9 units²

area of triangle = ½×4×3 = 6 units²

total area = 9+6 = 15 units²

Answer:

the remaining points either be (-3,-3) or (1,2)

Answer: 5.04x[tex]10^{4}[/tex] particles

in your situation is choose : A

Step-by-step explanation:

the volume of the living room is 1,400[tex]m^{3}[/tex], and there are 3.6 x [tex]10^{1}[/tex] particles of dust / [tex]m^{3}[/tex]

we will convert the room volume to scientific notation = 1.4 x [tex]10^{3}[/tex][tex]m^{3}[/tex]

then, the total number of particles will be the product of the two numbers, which is 1.4 x [tex]10^{3}[/tex][tex]m^{3}[/tex] times 3.6 x [tex]10^{1}[/tex] particles/[tex]m^{3}[/tex] = 5.04x[tex]10^{4}[/tex] particles

Answer:

its b

Step-by-step explanation:

Answer:

Step-by-step explanation:

b

Answer:

B) -34.5 < x

---

Hope this helps!

Answer:

The correct answer is A

Step-by-step explanation:

I think its Y = x+ 3

Answer:

The total cost of meal is $65.34

Step-by-step explanation:

Price of the meal = $54

Sales tax on meal = 6%

Tip given= 15% on pre-tax amount

We need to find total cost of meal.

First finding sales tax amount:

We need to calculate 6% of 54



So, the sales tax would be $3.24

Now, we need to find tip amount

We will find 15% of 54



So, the tip given would be $8.1

The total cost of meal = Price of meal + Sales Tax + Tip

                                      = 54+3.24+8.1

                                      = 65.34

So, the total cost of meal is $65.34

THANKS 0

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Answer:

4

Step-by-step explanation:

set

[tex]f(x,y)=x+y\\[/tex]

constrain:

[tex]g(x,y)=x^2+y^2 = 7\\h(x,y)=x^3+y^3=10[/tex]

Partial derivatives:

[tex]f_{x}=1\\f_{y} =1 \\g_{x}=2x \\g_{y}=2y\\h_{x}=3x^2 \\h_{y}=3y^2[/tex]

Lagrange multiplier:

[tex]grad(f)=a*grad(g)+b*grad(h)\\[/tex]

[tex]\left[\begin{array}{ccc}1\\1\end{array}\right]=a\left[\begin{array}{ccc}2x\\2y\end{array}\right]+b\left[\begin{array}{ccc}3x^2\\3y^2\end{array}\right][/tex]

4 equations:

[tex]1=2ax+3bx^2\\1=2ay+3by^2\\x^2+y^2=7\\x^3+y^3=10[/tex]

By solving:

[tex]a=4/9\\b=-2/27\\x+y=4[/tex]

Second mathod:

Solve for x^2+y^2 = 7, x^3+y^3=10 first:

[tex]x=\frac{1}{2} -\frac{\sqrt{13}}{2} \ or \ y=\frac{1}{2} +\frac{\sqrt{13}}{2} \\x=\frac{1}{2} +\frac{\sqrt{13}}{2} \ or \ y=\frac{1}{2} -\frac{\sqrt{13}}{2} \\x+y=-5\ or\ 1 \or\ 4[/tex]

The maximum is 4

Answer is in the photo. I can only upload it to a file hosting service. link below!

tinyurl.com/wpazsebu

Answer:

4a-2b

=4(7)+2(4)

=28+8

=36

Answer:

[tex]4a - 2b \\ a = 7 \\ b = 4 \\ \\ so \: 4 \times 7 - 2 \times 4 \\ = 28 - 8 \\ = 20 \\ thank \: you[/tex]

Answer and Step-by-step explanation:

The independent variable is m, and the dependent variable is h.

This is because you can plug in any value for m, making m NOT have to depend on any other value to become m.

With h, it needs the result of m and its other values to become the result of h. H relies/depends on the values in the equation to become a value.

#teamtrees #PAW (Plant And Water)

Answer:

D: the wiring and the other

Step-by-step explanation:

Answer:

The liquid and the medal

Step-by-step explanation: "So the electrons start to move from one metal to the other through the liquid. This creates current" This is why i would check the liquid and the medal. if the experiemnt doesnt work then there must be something wrong with the current

Answer: A prime is (-4,-5). B prime is (0,-1). C prime is (1,-5)

Step-by-step explanation:

You can either count three units to the right and from there 7 units down from each point to find its prime, or alternatively from each original x,y value of each point you can add 3 to the x value (because it wants you to move 3 units to the right and subtract 7 from the y value (because it wants you to move down 7 units).