What value of x makes the following equation true? ( 8th grade math )

Answer:

156

Step-by-step explanation:

6×12=72

7×12=84

72+84=156

Answer:

the slope is 1 so D

Step-by-step explanation:

Answer:

D.1

Step-by-step explanation:

Hello There!

Given two points we can use the slope formula to identify the slope

[tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]

Where the x and y values derive from the points given

So all we have to do is plug in the x and y values from the given points

so

slope =

[tex]\frac{8-3}{3-(-2)} \\8-3=5\\3-(2)=5\\\frac{5}{5} =1[/tex]

So we can conclude that the answer is D. 1

Answer:

$21.25

Step-by-step explanation:

$25 x 0.85 = $21.25

Answer:

x°=180-45-60=75°is your answer

Answer:

I. Length, L = 11 cm

II. Width, W = 6 cm

Step-by-step explanation:

Let the length of the rectangle be L.

Let the width of the rectangle be W.

Given the following data;

Area of rectangle = 66 cm²

Translating the word problem into an algebraic expression, we have;

L = 2W - 1 .....equation 1

We know that the area of a rectangle is given by the formula;

A = L * W

Substituting

66 = L * W ....equation 2

Substituting eqn 1 into eqn 2, we have;

66 = (2W - 1) * W

66 = 2W² - W

2W² - W - 66 = 0

Note: the standard form of a quadratic equation is ax² + bx + c = 0

a = 2, b = -1 and c = -66

Solving the quadratic equation using the quadratic formula;

The quadratic equation formula is;

[tex] x = \frac {-b \; \pm \sqrt {b^{2} - 4ac}}{2a} [/tex]

Substituting into the equation, we have;

[tex] x = \frac {-(-1) \; \pm \sqrt {1^{2} - 4*2*(-66)}}{2*2} [/tex]

[tex] x = \frac {1 \pm \sqrt {1 - (-528)}}{4} [/tex]

[tex] x = \frac {1 \pm \sqrt {1 + 528}}{4} [/tex]

[tex] x = \frac {1 \pm \sqrt {529}}{4} [/tex]

[tex] x = \frac {1 \pm 23}{4} [/tex]

[tex] x_{1} = \frac {1 + 23}{4} [/tex]

[tex] x_{1} = \frac {24}{4} [/tex]

x1 = 6

We do not need the negative value of x, so we proceed.

Therefore, Width, W = x1 = 6 cm

Next, we find the length L;

From eqn 1;

L = 2W - 1

L = 2(6) - 1

L = 12 - 1

L = 11 cm

Answer:

Step-by-step explanation:

The nth term:  [tex]a_n=a_1+d(n-1)[/tex]

So:

    a₄ = a₁ + 3d

18 =  a₁ + 3d   ⇒   3d =  18 - a₁

    a₇ = a₁ + 6d

39 = a₁ + 6d

39 = a₁ + 2(18 - a₁)

39 = a₁ + 36 - 2a₁

39 = 36 - a₁

a₁ = -3

3d = 18 - (-3)

3d = 21

d = 7

So the nth term:

                            [tex]a_n = -3 + 7(n-1)\\\\a_n=-3 +7n - 7\\\\a_n = 7n - 10[/tex]

Answer:

there is the answers❤ sorry its a little blurry

Step-by-step explanation:

[tex]y = {x}^{2} + 6x + 4[/tex]

[tex]y - 4 = {x}^{2} + 6x[/tex]

[tex]y - 4 + 9 = {x}^{2} + 6x + 9[/tex]

[tex]y + 5 = (x + 3) {}^{2} [/tex]

[tex]y = (x + 3) {}^{2} - 5[/tex]

i also want to understand lets see who answers it

Answer:

false

Step-by-step explanation:

I say false because the multiplicative inverse of 0 is undefined and the multiplicative inverse tells us that when you multiply a number by its inverse the product will be1 think the multiplicative inverse of 0 is undefined.

Answer:

yeah sure

Step-by-step explanation:

Answer 9 : 1

Answer 10 : 8b²/3a³c³

Answer:

Hi! The nswer to your question is m = 1

Step-by-step explanation:

☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

- Brooklynn Deka

Answer:

1

Step-by-step explanation:

The formula for slope is y2-y1/x2-x1.

So the y2 is 7 and the y1 is 2. The x2 is 10 and the x1 is 5. So when you plug those in you have 7-2/10-5. That simplifies to 5/5 which is 1.

Answer:

2(209 + 467) - 9/10

Step-by-step explanation:

Answer:

b = 90º

Step-by-step explanation:

b is also 90º because the angles are supplementary

Answer:

90 degrees

Step-by-step explanation:

Answer:

N=47.3

Step-by-step explanation:

hope it helps.I have minused90 because that is a 90 degree angle

Answer: $49,305.56

Step-by-step explanation:

A(t)=a(1+r)^t (its subtraction if the thing decreases)

A(t)=amount after t time periods

t=number of time periods

a=initial amount

r=rate of growth (can’t be a percent, change by moving two decimal places)

A(t)=32000(1+0.155)^3

Answer:

f(5) =7

Step-by-step explanation:

According to the graph,

since y=f(x) thus means the value of y when x=5

the answer is 7

Answer:

There are a lot of expressions that are equivalent to that, please be more specific.

Step-by-step explanation:

Answer:

hhhqh

Step-by-step explanation:

j;l khnjugo8;e7rigum  fkjsdlkgj

Answer:

only one has the value of -12

Step-by-step explanation:

like what

Question: Here are four expressions that have the value -12:

-14+(-14)

12−1

-214

-12

Write five expressions: a sum, a difference, a product, a quotient, and one that involves at least two operations that have the value -34.

Answer: That means reducing the expression to a numeric value, or its simplified form. ... Difference between algebraic expression and algebraic equation An algebraic expression is a ... SUBSTITUTION Any algebraic expression may have one or more variable. ... Take this one as an example Five times the sum of four and two.

Answer:

x = 7/12

Step-by-step explanation:

Solve the exponential problem :

1/16=64^4x-3

1 / 4^2 = 4^3(4x - 3)

4^-2 = 4^3(4x - 3)

-2 = 3(4x - 3)

-2 = 12x - 9

-2 + 9 = 12x

7 = 12x

7/12 = 12x/12

7/12 = x

Hence, x = 7/12

Answer is 7/12, or approx. 0.58333... Answer explained in attached file.

Answer:

f(3) = - 38

Step-by-step explanation:

f(2) = 3 f(2 - 1) - 5 = 3 f(1) - 5 = 3(-2) - 5 = -6 - 5 = -11

f(3) = 3 f(3 - 1) - 5 = 3 f(2) - 5 = 3(-11) - 5 = - 33 - 5 = - 38

Answer:

the slope of both lines are the same.

Step-by-step explanation:

Given the following segment of the Quadrilateral EFGH on a coordinate  Segment FG is on the line 3x − y = −2,

segment EH is on the 3x − y = −6.

To determine their relationship, we can find the slope of the lines

For line FG: 3x - y = -2

Rewrite in standard form y = mx+c

-y = -3x - 2

Multiply through by-1

y = 3x + 2

Compare

mx = 3x

m = 3

The slope of the line segment FG is 3

For line EH: 3x - y = -6

Rewrite in standard form y = mx+c

-y = -3x - 6

Multiply through by-1

y = 3x + 6

Compare

mx = 3x

m = 3

The slope of the line segment EH is 3

Hence the statement that proves their relationship is that the slope of both lines are the same.

The slope of the lines is the same, the line segments FG and EH are parallel to each other and are the opposite sides of the quadrilateral.

A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of a line is given by,

y =mx + c

where,

x is the coordinate of the x-axis,

y is the coordinate of the y-axis,

m is the slope of the line, and

c is constant.

The slope of the line segment FG can be found by comparing the equation with the equation of the line. Therefore,

y = mx + c

-2 = 3x - y

- 2 - 3x = -y

y = 3x + 2

Thus, the slope of the equation is 3.

The slope of the line segment EH can be found by comparing the equation with the equation of the line. Therefore,

y = mx + c

3x - y = -6

-y = 6 - 3x

y = 3x+6

Thus, the slope of the equation is 3.

Since the slope of the lines is the same, the line segments FG and EH are parallel to each other and are the opposite sides of the quadrilateral.

Learn more about Equation of Line:

https://brainly.com/question/21511618

#SPJ5

Answer

measure of angle A: 28 degrees

BC ≈ 13.3

BA = 28.3

hope this helps

Step-by-step explanation:

angle A

90- 62 = 28

angle A = 28

BC

tan (A) = BC / 25

(25) tan 28 = BC / 25 (25)  multiply 25 on both sides to cancel it out from BC

13.292735 = BC

BC ≈ 13.3

BA

BA^2 = 13.3^2 + 25^2  Pythagorean theorem

BA ≈ 28.3

If any of these are wrong, just follow the steps and make sure to use Ans in the calculator instead of rounding your numbers! Good luck :)

Answer:

300

Step-by-step explanation:

Answer:

Step-by-step explanation:

Total miles = 450

Unit rate = 450 ÷ 6 = 75 miles

Distance in 4 hours = 75 x 4 = 300 miles

The Lee family drove 300 miles in 4 hours

Step-by-step explanation:

F( x ) = 5 (3) ^ x

Y intercept

Let x = 0

f(0) = 5× 3 ^ 0

f(0 = 5 × 1

f(0) = 5

X intercept

let y = o

0 = 5 × 3 ^x

No x intercept/ zero

therefore

Vertical intercept (0; 5)

Domain XER

▪︎this refer to the values of X

Answer:

Step 1:

Draw a graph - Put Customers on the x-axis and Tips on the y-axis

Equation of a line = mx + c

Then look for where the line crosses the x-axis (this is "c")

Choose two points and find the gradient using this formula:

Change in y/change in x

The number you just got is your "m"

Put it all together and you have y = Mx + C

Hope this helps please mark as brainliest :P

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given data in the table added to scatter plot and line of best fit calculated using a graphing calculator.

See the attached graph.

The line of best fit is:

Answer:

3 cents

Step-by-step explanation:

cost of  20 markers=$6

cost of 1 marker=?

Cost of 1 marker = 6/20 = 3/10 = 0.3

It costs 3 cents.

Answer:

Volume: 30

SA: 62

LA: 42

Step-by-step explanation:

Volume: V=l*w*h= 3*2*5= 30

SA: 2(lw+lh+wh)= 62

LA= 2h(l+w)= 42

Answer:

multiply each side for the answer

Step-by-step explanation:

:> hope you pass!

Answer:

2.9 per second

Step-by-step explanation: