HELP I AM STUCK AND ITS DUE SOON

Answer:133.4

Step-by-step explanation:

a.9v3-4v3+v5+2v5

=5v3+v3+2v5

=5v3+3v5

b.10v2+4v2+6v2

=4v2+4v7

Step-by-step explanation:

-1/4, -1/5, -1/6, -1/7, -1/8, 1/8, 1/7, 1/6, 1/5, 1/4

Answer:

x=20

Step-by-step explanation:

Let  = a 30 day period

The first equation is 50 - 2x (because you start with $50 and subtract 2 for each 30 day period)

The second equation is 40-1.5x

Set them equal to each other:  50 - 2x = 40 - 1.5x

Solve for x:

50 - 2x = 40 - 1.5 x

    +2x         +2x

-----------------------

50 = 40 + 0.5 x

-40   -40

-------------------

10 = 0.5 x

20 = x

So there will be 20 30-day periods until the cards will be equal in value.

Check:  After 20 periods, 50 - 2(20) = $10 left

40 - 1.5(20) = also $10 left

 By multiplying matrices B and A, we obtain the product BA. Using BA, we can solve the system of equations y + 2z = 7, x - y = 3, and 2x + 3y + 4z = 17.the values of x, y, and z are -1, 2, and 1 respectively

To find the product BA, we multiply matrix B with matrix A. The resulting matrix will have the same number of rows as B and the same number of columns as A. The product BA will be used to solve the given system of equations.
The product BA can be computed by multiplying each row of matrix B by each column of matrix A and summing the results. The resulting matrix will be:
Now, we can use the product BA to solve the system of equations:
-10x - 10y + 6z = 7,
3x - 8y + 2z = 3,
-6x - 16y + 15z = 17.

1 -1 2
2 3 1
0 4 2
We can rewrite this system of equations as:
-10x - 10y + 6z = 7,
3x - 8y + 2z = 3,
-6x - 16y + 15z = 17.
By comparing the coefficients of x, y, and z in the system of equations with the entries in the matrix BA, we can determine the values of x, y, and z.
Solving the system of equations using matrix BA, we get:
x = -1,
y = 2,
z = 1.
Therefore, the values of x, y, and z are -1, 2, and 1 respectively.

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The complete question is:
Given A=
⎣2 2 -4|
|-4 2 -4|
|2 -1 5|
, B=
⎣1 -1 0|
⎢2 3 4|
⎢0 1 2|
, find BA and use this to solve the system of equations y+2z=7, x−y=3, 2x+3y+4z=17.

Answer:

0.266666666

Step-by-step explanation:

The volume of the 14 cylindrical pillars made of concrete is 8.8 m³

An equation is an expression that shows the relationship between two or more numbers and variables using mathematical operations. An equation can be linear, quadratic, cubic and so on, depending on the degree of the variable.

The volume of a cylinder is:

Volume = π * radius² * height

A temple has 14 cylindrical pillars made of concrete. If the radius of base of each pillar is 20 cm and height is 5 m.

Radius = 20 cm = 0.2 m

Volume of each cylindrical pillar = π * 0.2² * 5 = 0.628 m³

Volume of 14 cylindrical pillar = 14 * 0.628 m³ = 8.8 m³

The volume of the pillars is 8.8 m³

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Let x = the number of 5¢ fare increases

Let y = money the company gets

Equation: y = (360 - 20x) (0.50 + 0.05x)

Solve for x when y = 196

196 = 180 + 18x - 10x - x^2

x^2 - 8x + 16 = 0

Factor to solve for x

(x - 4)^2 = 0

x = 4

Remember what x means

Total fare = 0.50 + 0.05x = 0.50 + 0.20 = 0.70

Total fare = 70¢

Answer:

I think the answer is 20....I'm so sorry if that is wrong :[

The given expression at {x} = - 2 and {y} = -4 evaluates to 20.

A function is a relation between a dependent and independent variable. We can write the examples of functions as -

y = f(x) = ax + b

y = f(x, y, z) = ax + by + cz

Given is the expression -

3x² - 2y

The given equation is -

3x² - 2y

For {x} = - 2 and {y} = -4, we can evaluate the expression as -

3(-2)² - 2(-4)

3 x - 2 x - 2 - 2 x - 4

3 x 4 + 8

20

Therefore, the given expression at {x} = - 2 and {y} = -4 evaluates to 20.

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The angle e between vectors u and v to the nearest tenth of a degree is

≈ 3.14°.

An angle in plane geometry is a shape created by two rays or lines that have a shared termination. The name "angle" originates from the Latin word "angulus," which means "corner. "The common terminus of two rays is known as the vertex, and the two rays are known as sides of an angle.

When u and v's two vectors are at an angle, if, then cosθ = (u·v) / [llull llvll]

u·v = (5)(4) + (2)(-3)

       = 20 - 6

        = 14

llull = √[(5)2 + (2)2]

= √29    

llvll = √[(4)2+(-3)2]

= √25

So, cosθ = 14 / [√725]

            = 0.51

θ = cosθ-(0.51) ≈ 3.14°

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Answer:

94.6-18.8=75.8

75.8 is the answer

Step-by-step explanation:

Hope this helps

May i get braineist pls?

Answer: 9.7 seconds

Step-by-step explanation:

\(16t^2 =1503\\\\t^2 =1503/16\\\\t=\sqrt{1503/16} \text{ } (t > 0)\\\\t \approx 9.7\)

Answer:

its c =0.48+12p..... i did the math on a piece of paper

Answer:

7

Step-by-step explanation:

You take the area of the rectangle and then subtract the area of the triangle.

Area of a rectangle is bh = 4*2= 8

Area of a triangle is 1/2*bh = 1*2 = 2/2 = 1

8-1 = 7

Answer:

C(a,b)

AC(a/2, b/2)

BD(a+c/2, b+0/2)

Step-by-step explanation:

Answer:

x = 4

Step-by-step explanation:

perpendicular lines have opposite and reciprocal slopes

the line y = 2 is a horizontal line, which means the slope is zero

also, y = 2 intersects the y-axis at 2

a line perpendicular to a horizontal line is a vertical line and, if it passes through the point (4,5) will intersect the x-axis at 4

therefore, the equation would be x = 4

Answer:

x- intercept: ( -10,0)

y- intercept: (0, -45)

Step-by-step explanation:

An x intercept can be determined from the graph above by recognizing where the given line crosses the x-axis. The same is true for the y intercept and the y-axis.

On this graph, we see that the line crosses the x axis at the point ( -10,0), making this our x intercept.

We also see that the line crosses the y axis at the point (0, -45), making this our y intercept.

HOPE THIS HELPS!!

The correct option for the past forecasts using the 2-period moving average method is:
A. F1 = 5582 F2 = 5352 F3 = 5438.5 F4 = 6037.5 F5 = 5736.5

Step-by-step explanation:
1. To calculate F2, take the average of Period 1 and Period 2 actual sales: (5582 + 5122) / 2 = 5352.
2. For F3, average Period 2 and Period 3 actual sales: (5122 + 5755) / 2 = 5438.5.
3. For F4, average Period 3 and Period 4 actual sales: (5755 + 6320) / 2 = 6037.5.
4. For F5, average Period 4 and Period 5 actual sales: (6320 + 5153) / 2 = 5736.5.

"Random variation" encompasses the irregular changes in a time series that are not caused by any other component. Some  common example of random variation is coin toss. It  is independent of the effects of systematic biases. In general, the larger the sample size is, the lower the random variation is of the estimate of a parameter. As random variation decreases, precision increases.

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Answer:

well since you said 32 per home since that wasnt a hour he was there, i took off 32 from the 128.69 and got 96.69 and divided that by 22.75 and got 4.2 hours but if that's not what you are talking about ill also give the answer for 128.69 divided by 22.75 and the answer for that is 5.6

Step-by-step explanation:

so just add 4.2 or 5.6 to hours and you will get you question at what time he left

The function f(7) value is 11.33.

A function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

f(3) = 6

f(6) = 10

The linear function can be defined as,

f(x) = mx + c

Now,

m = (f(6) - f(3)) / (6 - 3)

m = (10 - 6)/3

m = 4/3

Now,

f(3) = 6

x = 3

So,

f(x) = mx + c

f(3) = 4/3 x 3 + c

6 = 4 + c

c = 6 - 4

c = 2

Now,

f(x) = (4/3)x + 2

For x = 7.

f(7) = 4/3 x 7 + 2

f(7) = 28/3 + 2

f(7) = 11.33

Thus,

The value of f(7) is 11.33.

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Answer:

x= -7

Step-by-step explanation:

\(~~~~~~2(3x+4) = 7x-2x+1\\\\\implies 6x +8 = 5x+1\\\\\implies 6x -5x = 1-8\\\\\implies x = -7\)

To predict the number of situps a person who watches 13.5 hours of TV can do, we can use the given regression equation y = ax + b, where 'a' and 'b' are the coefficients and 'x' is the hours of TV watched.

Given:
a = -1.077
b = 30.98
x = 13.5

Step 1: Substitute the given values into the regression equation:
y = (-1.077)(13.5) + 30.98

Step 2: Perform the calculations:
y = (-14.5395) + 30.98

Step 3: Add the values:
y = 16.4405

Since we need the result to one decimal place, we can round it off to:
y ≈ 16.4

So, a person who watches 13.5 hours of TV per day can do approximately 16.4 situps.

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The sample is baised.

Since all the students who attended the football game will most likely want a football stadium to be built and those that do no want a stadium to be built are not proportionately represented in this sample

The original price of the bracelet, before tax $0.68

From the question, we have the following parameters that can be used in our computation:

Amount = $0.72

Sales tax = 6%

Using the above as a guide, we have the following:

Amount = Original amount * (1 + Sales tax)

Substitute the known values in the above equation, so, we have the following representation

0.72 = Original amount * (1.06)

So, we have

Original amount = 0.68

Hence, the original amount = 0.68

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Step-by-step explanation:

2x-2<8

2x<8+2

2x<10

x>10/2

x>5

Answer:

james sets off from home on a bike.The graph journey.

a)what is james' average speed on his outward journey

Step-by-step explanation:

we can factor out 12 from this expression because all of them can be divided by 12

12(2k+4q-1)