work out the value of x

will give brainliest

Answer:

f(4) for the function [tex]f(x) = 7x + 6[/tex] is [tex]\mathbf{f(4)=34}[/tex]

Step-by-step explanation:

We need to find f(4) for the function [tex]f(x) = 7x + 6[/tex]

For finding f(4) we will put x= 4 in the given function

[tex]f(x) = 7x + 6[/tex]

Put x = 4

[tex]f(4)=7(4)+6\\f(4)=28+6\\f(4)=34[/tex]

SO, f(4) for the function [tex]f(x) = 7x + 6[/tex] is [tex]\mathbf{f(4)=34}[/tex]

Answer:

$29.92

Step-by-step explanation:

Step one:

given data

The bill for dinner totaled $74.80

Then the tip is 20%

Required

The amount paid by each person after the tip was added to the cost of the dinner

Step two:'

the amount of the tip is

=20/100*74.80

= 0.2*74.80

=$14.96

The total is 14.96+74.80

=$89.76

The number of persons including the celebrant is = 3

so each person will pay

=89.76/3

=$29.92

Answer:Miles Per Hour Definition. Our Miles Per Hour Calculator can tell you how many miles you drive in a single stretch. On long road trips, knowing how many miles you are averaging per hour can give you an idea of how long it will take to get to your destination.It is also a good indicator if you are taking too many breaks or if traffic has caused delays in your journey.

Step-by-step explanation:and what you say is 20 points is only 10 points or 13

Answer:

15^2 = 225

7^3 = 343

Step-by-step explanation:

Answer:

k = 14

Step-by-step explanation:

Given:

x⁴ + kx² + 49

Find:

Value of k

Computation:

x⁴ + kx² + 49

(x²)² + (k)(x²) + 7²

we know that;

a² + 2ab + b²

On compare;

k = 2 x 7

k = 14

The total money Ani raised was  217 dollars.

Cost price of soda = 310 dollars

money raised = selling price - cost price

What is selling price?

The cost at which something is sold. Calculate the total cost of all the items you bought. To calculate the cost price, divide the total cost by the quantity of units purchased. Use the selling price formula to calculate the final price: Cost price plus profit margin equals selling price.

What is cost price ?

Cost price is the complete sum of money that a manufacturer must spend to create a specific good or render a specific service. Cost is equal to Selling price plus Loss ( when selling price and loss is given ) Cost price = 100 Selling Price + 100 + Profit (where the Selling Price and Profit Percentage are supplied)

Hence

x = 527 - 310

=217 dollars

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Answer:

The 2nd one

Step-by-step explanation:

The required function is: 576,001 - ( 0.11 * 576,001 * x )

The value of the helicopter after 12 years, to nearest dollar is -$184320

Given data

price of a helicopter $576,001

rate of value decrease is 11%

The decrease in value will result to

= 576,001 - 0.11 * 576,001 * x

let x represent the number of years

the required function is: 576,001 - 0.11 * 576,001 * x

plugging in 12 and solving results to

= 576,001 - 0.11 * 576,001 * x

= 576,001 - 0.11 * 576,001 * 12

= 576,001 - 760321.32

= -184320.32

The value of the helicopter after 12 years, to nearest dollar is -$184320

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Answer:

C

Step-by-step explanation:

Division can be done by "cross multiplying", or multiplying the first equation by the reciprocal of the second equation.

In answer c, the first term remains the same, but the second is the reciprocal of the original.  Also, the operator has changed from division to multiplication, so C is the correct answer.

The amount of money that Matt has will be $64.

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

Ginger and matt have a total of $124.00 dollars. Ginger has $12.00 more than 3/4 of the amount Matt has.

Let x be the amount that Ginger has and y be the amount that Matt has. Then the equations will be

x + y = 124           ...1

x = (3/4)y + 12     ...2

From equations 1 and 2, then we have

(3/4)y + 12 + y = 124

(7/4)y = 112

y = $64

Then the amount  that Ginger has will be

x = (3/4)64 + 12

x = 48 + 12

x = $60

The amount of money that Matt has will be $64.

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Answer: 369

Step-by-step explanation:

This is becuase 18% of 450 is 81, and 18% off means you subract the 81 leaving 369.

Answer:

It goes through the vertex

Step-by-step explanation:

The axis of symmetry is an imaginary line that runs vertically or horizontally through the vertex depending on which way the parabola or hyperbola is facing.

Brainliest please.

To find the answer, all we need to do is divide his additional profits ( $1,645 ) by the number of days he made the profit ( 7 days in the week )

$1,645 ÷ 7 = $235

Steven's Shop profits increased by $235 each day!

Hope I helped! If you more explanation, just comment ! :)

Answer:

9,401,922,434

Step-by-step explanation:

Answer:

the answer its 9.401.922.434

I hope helps you and if you want and consider you can give me a brainly crown

Answer:

B. 3

Step-by-step explanation:

Answer:

-x+1/6

Step-by-step explanation:

Multiply -1/3 x 3x=-1x or -x

Multiply -1/3 x -1/2= 1/6

Answer:

B

Step-by-step explanation:

Answer:

4 games

Step-by-step explanation:

Let the number of games rented from both be represented by: g

For Games - R - Us

Games-R-Us offers a video game rental program with a monthly fee of $10 plus $2 per game rental.

$10 + $2 × g

= 10 + 2g

For Games2Go

Games2Go charges a $2 monthly fee plus $4 per game.

$2 + $4 × g

= 2 + 4g

Hence,

Games-R-Us = Games2Go

10 + 2g = 2 + 4g

Collect like terms

10 - 2 = 4g - 2g

8 = 2g

g = 8/2

g = 4 games

Therefore, number of games you would have to rent from each company to have your total cost be the same amount is 4 games

Answer:

6 from 2x+6=3x-8 goes to right side and becomes -6 so -6+(-8)= -14

Step-by-step explanation:

2x+6=3x-8

2x=3x-8-6

2x=3x-14

2x-3x=-14

-x=-14

x=14

Answer:

It would be C or B

Step-by-step explanation:

can't be A because A is 0 and there is no way you could be able to draw 0 lines so it would most likely be C

Answer:

none of these

Step-by-step explanation:

Answer:

its A C D

Step-by-step explanation:

did it on edg and got it right

Answer:

it is 1,3 and 4

Step-by-step explanation:

Answer:

60

Step-by-step explanation:

replace a and y with their numbers

(4+6+7+3)3

add the numbers in the bracket first

4 + 6 + 7 + 3 = 20

multiply by 3

20 x 3 = 60

Answer: 24oz - $2.59

Step-by-step explanation: 3.29/32= 0.1028

2.59/24= 0.1079

Answer:

x = 2, y = -3

Step-by-step explanation:

Since both equations are set equal to y,

[tex]-x+5=-2x+7 \\ \\ x=2 \\ \\ \implies y=-2+5= - 3[/tex]

Answer:

x: -6, y: -2

Step-by-step explanation:

look at the graph, I hope this is the x and y of the lines. It says the answers, but just identify it.

Answer:

(- 6, 0 ) and (0, - 2 )

Step-by-step explanation:

The x- intercept is the value of x on the x- axis where the line crosses.

Here x = - 6 ← x- intercept or (- 6, 0) in coordinate form

The y- intercept is the value of y on the y- axis where the line crosses.

Here y = - 2 ← y- intercept or (0, - 2 ) in coordinate form

The value of a and b are 11 and 14.

The equation on a graph shows the point where the equation intersects

on the x-axis and the y-axis.

We have,

The function as y = 2x² + ax + b

Where it intersects on the x-axis at the points (-7/2, 0) and (2, 0).

Now we can write it as:

At point (-7/2, 0).

0 = 2 (-7/2)² + a(-7/2) + b

0 = 49 / 2 - 7a/2 + b

7a/2 - b = 49/2 _____(1)

At point (2, 0)

0 = 2(2)² + 2a + b

0 = 8 + 2a + b

2a + b = -8 _____(2)

From (1) and (2) we can find a and b.

From (1)

7a/2 - 49/2 = b

b = (7a - 49) / 2 ______(3)

putting in (2)

2a + (7a - 49) / 2 = -8

4a + 7a - 49 = -16

3a - 49 = -16

3a = -16 + 49

3a = 33

a = 11

putting in (3)

b = (7x11 - 49) / 2

b = (77 - 49) / 2

b = 28 / 2 = 14

Thus the value of a and b are 11 and 14.

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The value of a and b for the given equation is 3 and -14 respectively.

The given equation is y=2x²+ax+b, (-7/2, 0) and (2, 0).

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Now put (-7/2, 0) and (2, 0) in the given equation and find a and b value.

That is, 0=2 (-7/2)²+a(-7/2)+b

⇒ 49/2 -7a/2+b=0 ----(I)

0=2(2)²+a(2)+b

⇒ 8+2a+b=0

⇒ b=-2a-8 -----(II)

Put b=-2a-8 in equation (I) and simplify.

That is, 49/2 - 7a/2 -2a-8=0

⇒ 49/2 - 11a/2 - 8 =0

⇒ 49 - 11a=16

⇒ 11a=33

⇒ a=3

Put a=3 in equation (II) and simplify.

That is, b=-2(3)-8=-14

Therefore, the value of a and b for the given equation is 3 and -14 respectively.

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