3 (x + 7) = -12
x + 7 = ?
x = ?
Find out ? fast

Answers

Answer 1

Answer:

×=-11

Step-by-step explanation:

3x+21=-12

3×=-33

×=-11

Answer 2

Answer:

x=-11

x+7=-4

Step-by-step explanation:

3(x+7)=-12

3x+21=-12

3x=-12-21

3x=-33

x=-33/3

x=-11

-11+7=-4


Related Questions

You are dealt one card from a standard 52-card deck. Find the probability of being dealt an ace or a 6.

Answers

Answer:

2/13

Step-by-step explanation:

Since there's 4 of each card in the deck this means that there're 4 sixes and 4 aces, so 8 cards in a 52 card deck gives the problem 8/52 which equals 2/13

Find the surface area of the pyramid. A triangular pyramid. The base triangle has a base of 8 meters and a height of 6.9 meters. The height of a triangular face is labeled 7 meters. The surface area is square meters.

Answers

If the base triangle has a base of 8 meters and a height of 6.9 meters. the surface area of the pyramid is 139.6 square meters.

How to find the surface area?

First, let's find the area of the base triangle:

Area of base triangle = (1/2) * base * height

Area of base triangle = (1/2) * 8 * 6.9

Area of base triangle = 27.6 square meters

Now, let's find the area of one of the triangular faces:

Area of triangular face = (1/2) * base * height

Area of triangular face = (1/2) * 8 * 7

Area of triangular face = 28 square meters

Since the pyramid has four triangular faces, the total area of the triangular faces is 4 times the area of one triangular face, which is:

4 * 28 = 112 square meters

Total surface area = area of base triangle + area of triangular faces

Total surface area = 27.6 + 112

Total surface area = 139.6 square meters

Therefore, the surface area of the pyramid is 139.6 square meters.

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Mrs. Young has p goats and q cows on his farm. He has 23 fewer cows than goats.

What are the missing values in the table?

PLSSSS QUICK

Mrs. Young has p goats and q cows on his farm. He has 23 fewer cows than goats. What are the missing

Answers

Step-by-step explanation:

35:12

40:17

45:22

50:27

55:32

What is the area of the triangle in centimeters squared?​

What is the area of the triangle in centimeters squared?

Answers

112 centimeters squared

Explanation:
The formula for area of a triangle is:
1/2 • base • height

REMEMBER, use the height that is perpendicular to the base. If not, your answer will be wrong

Use formula with given dimension of this triangle:
1/2 • 14 • 16 = 112

FINAL ANSWER WITH UNIT OF MEASURMENT:
112 centimeters squared

Have a nice day, hope this helps!

A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs ​$69. A season ski pass costs ​$350. The skier would have to rent skis with either pass for ​$25 per day. How many days would the skier have to go skiing in order to make the season pass less expensive than the daily​ passes? The skier would have to go skiing nothing days. plz answer right and give more info on how u got the answer ty

Answers

Divide the season pass cost by the daily capstone:

350 / 69 = 5.07

They would have to ski 6 days for the season pass to be less expensive

Plot the y-intercept on the graph.

A music school charges a registration fee in addition to a fee per lesson. Music lessons last 0.5 hour. The equation y = 40x + 30 represents the total cost of y of x lessons. Find and interpret the slope and y-intercept of the line that represents this situation. Then find four points on the line.​

Plot the y-intercept on the graph. A music school charges a registration fee in addition to a fee per

Answers

Answer:

y intercept = 30

slope = 40

four points on the line would include..

(0, 30)

(1, 70)

(3, 150)

Step-by-step explanation:

y = mx + b

y intercept is 30 and slope is 40

Find the quotient. 2x − 3 x ÷ 7 x2

Answers

-1/14

I’m not 100% sure tho

Answer: 8/7x

Step-by-step explanation:

2x-3x/7x2

rewrite

2x-3/7x x 2

calculate

2x-6/7x

calculate

solution

8/7x

Which point is a solution to the inequality shown in this graph?
(5.0)
O A. (60)
O B. (0, -3)
O C. (5,-5)
ОО
D. (0,-5)

Which point is a solution to the inequality shown in this graph?(5.0)O A. (60)O B. (0, -3)O C. (5,-5)D.

Answers

It would be (0, -3) because it is a solid line meaning the point can be in or on the solid line

Evaluate the function f(r) the square root of r+6 -4 at the given values of the independent variable and simplify. a. f(-6) b. f(43) c. f(x-6)

Evaluate the function f(r) the square root of r+6 -4 at the given values of the independent variable

Answers

SOLUTION

Write out the function given

\(f(r)=\sqrt[]{r+6}-4\)

The independent variable in the function above is r.

Hence

For f(-6), we have r=-6,

substitute into the function given

\(\begin{gathered} f(-6),\text{ r=-6} \\ f(-6)=\sqrt[]{-6+6}-4 \\ f(-6)=\sqrt[]{0}-4=4 \\ Then,f(-6)=-4 \end{gathered}\)

Hence, F(-6) = - 4

For f(43), we have

\(\begin{gathered} f(43),\text{ r=43} \\ \text{Then} \\ f(43)=\sqrt[]{43+6}-4 \\ f(43)=\sqrt[]{49}-4=7-4=3 \\ \text{Hence, f(43) = 3} \end{gathered}\)

Thus, F(43) = 3

For f(x - 6), we have

\(\begin{gathered} f(x-6)\Rightarrow r=x-6 \\ \text{Then } \\ f(x-6)=\sqrt[]{x-6+6}-4 \\ f(x-6)=\sqrt[]{x}-4 \end{gathered}\)

Thus, f(x-6) = (√x) - 4

Which inequality represents the situation: Kate took $3 out of her purse and still had at least $8 in it. How much did she have to begin with?

Answers

Answer:

k-3 ≥8

Step-by-step explanation:

k-3 ≥8

kate takes out 3 dollars and has at least 8 dollars left, meaning she could have more.

Evaluate the expression, writing the result as a simplified complex number.

To earn full credit be sure to show all steps and calculations. You may wish to do the work on paper and submit an image of that written work.

\frac{(2+i)(4-2i)}{1+i}

Answers

The simplified expression involving complex numbers is given as follows:

5 + 5i.

What are complex numbers?

Complex numbers are number that have a real and an imaginary part, and are defined as follows:

z = a + bi.

In which:

a is the real part.b is the imaginary part.

The basic relation of complex numbers is given as follows:

i² = -1.

The fraction for this problem is given as follows:

(2 + i)(4 - 2i)/(1 + i).

The numerator is simplified as follows:

(2 + i)(4 - 2i) = 8 - 4i + 4i - 2i² = 8 + 2 = 10.

Hence the fraction is of:

10/(1 + i).

To remove the complex number from the denominator, the entire fraction is multiplied by the conjugate of the denominator, hence:

10/(1 + i) x (1 - i)/(1 - i) = 10(1 + i)/(1 - i²) = 10(i + 1)/2 = 5 + 5i.

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After a 31% mark up, you purchase a new television for $524. What was the original price of the television?

Answers

Answer:

162.4$

Step-by-step explanation:

mark me on brainliest please follow me to

The area of the rectangle shown is 352 square inches. What are the dimensions of the rectangle? Write the dimensions from least to greatest.
Length= 4x Width= x+3 Area=352

Answers

Answer:

11 in and 32 in

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

Given a rectangle with dimensions of:

l = 4x in, w = x + 3 in,And area of A = 352 in²

Use area equation and find the value of x:

A = lw352 = 4x(x + 3)88 = x(x + 3)88 = x² + 3xx² + 3x - 88 = 0x² + 11x - 8x - 88 = 0x(x + 11) - 8(x + 11) = 0(x - 8)(x + 11) = 0x = 8 or x = - 11

The second root is ignored as being negative.

The dimensions of the rectangle are:

l = 4*8 = 32 inw = 8 + 3 = 11 in

Elizabeth works picking blackberries. She is paid $0.25 per quart. In a week where she picks 1053 quarts, what’s her total pay?

Answers

Answer:

$263.25

Step-by-step explanation:

let the number of quarts picked be x

given that Elizabeth is paid $0.25 per quart, her earnings for x quarts would be $ 0.25x

it is given that she pickes 1053 quarts (i.e x = 1053)

hence our equation for her earnings becomes,

$0.25 x 1053

= $263.25

Convert to standard notation. 1.325 X10^0

Answers

The expression 1.325 * 10⁰ in standard notation is; 1.325

How to write number in standard notation?

We are given the number in scientific notation as;

1.325 * 10⁰

A standard notation is a form of writing a given number, an equation, or an expression in a form that follows certain rules. For example, 4.5 billion years is written as 4,500,000,000 years.

Now, applying the concept of standard notation to our question, we can write the expression as;

1.325 * 10⁰ = 1.325 * 1

This is because 10⁰ = 1.

Thus,

The expression 1.325 * 10⁰ in standard notation is 1.325

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What is the length of AB? Help ASAP

What is the length of AB? Help ASAP

Answers

Answer:

6/8

Step-by-step explanation:

simplify and find the slope

6/8 is the answer you’re looking for

If 6 sandwich rolls cost $1.08, How much will 18 rolls cost ?

Answers

Answer: 3.24

Step-by-step explanation: because :)

                     

questions are in the pictures

questions are in the pictures

Answers

Answer:

True

I hope this helps!

PLEASE HELP, please write it out in the system of equations (step by step)


2x + y = - 1 ; x - 2y = - 8

Answers

Answer:

\({x,y}={-2,3}\)

Step-by-step explanation:

[1]    2x + y = -1

  [2]    x - 2y = -8  <------- given linear equations

Graphic Representation of the Equations : ----> given in attatchment

y + 2x = -1        -2y + x = -8  < ----- point where they connect is shown in graph

Solve by Substitution :

// Solve equation [2] for the variable  x

 [2]    x = 2y - 8

// Plug this in for variable  x  in equation [1]

  [1]    2•(2y-8) + y = -1

  [1]    5y = 15

// Solve equation [1] for the variable  y

  [1]    5y = 15

  [1]    y = 3

// By now we know this much :

   x = 2y-8

   y = 3

// Use the  y  value to solve for  x

   x = 2(3)-8 = -2

Solution :

{x,y} = {-2,3}

PLEASE HELP, please write it out in the system of equations (step by step)2x + y = - 1 ; x - 2y = - 8

Answer:

Step-by-step explanation:

[1]    2x + y = -1

 [2]    x - 2y = -8  <------- given linear equations

Graphic Representation of the Equations : ----> given in attatchment

y + 2x = -1        -2y + x = -8  < ----- point where they connect is shown in graph

Solve by Substitution :

// Solve equation [2] for the variable  x

[2]    x = 2y - 8

// Plug this in for variable  x  in equation [1]

 [1]    2•(2y-8) + y = -1

 [1]    5y = 15

// Solve equation [1] for the variable  y

 [1]    5y = 15

 [1]    y = 3

// By now we know this much :

  x = 2y-8

  y = 3

// Use the  y  value to solve for  x

  x = 2(3)-8 = -2

Solution :

{x,y} = {-2,3}

--Please help, ill give 30 points and brainiest if your correct!!--

Lisa and Alice are playing a game. Each player either receives or has to pay play money based on the results of their spin. The table lists how much a player receives or pays for various spins. What color has the greatest amount?
Red
Pays $5
Blue
Receive $4
Yellow
Pay $1
Green
Receive $3
Orange
Pay $2

Answers

Answer:

The amount in table as positive negative numbers: -5, 4, -1, 3, -2.

The spinner lands on red the change to Lisa's amount of money is -$5.

Step-by-step explanation:

Consider the provided table.

Part(A)

The table list how much a player receives or pays for various.

Paying some money is represented by a negative sign while receiving money is represented by a positive sign.

For red they needs to pay $5 which can be written as -5.

For blue they received $4 which can be written as 4.

For yellow they needs to pay $1 which can be written as -1.

For green they received $3 which can be written as 3.

For orange they needs to pay $2 which can be written as -2.

So, the amount in table as positive negative numbers: -5, 4, -1, 3, -2.

Part(B)

Now, we need to describe the change to Lisa’s amount of money when the spinner  lands on red.

If spinner lands on red then she needs to pay $5.

Thus, if the spinner lands on red the change to Lisa's amount of money is -$5.

An opinion poll reported that 36% believe a certain governor broke campaign financing laws in his election campaign. How many people would you have to survey to be 99% confident that you can estimate to within 1% the fraction of people who believe the governor broke campaign financing laws? Round your answer to whole number.

Answers

Answer:

The number of people would have participate in opinion poll

n =  15,267

Step-by-step explanation:

Step(i):-

Given data an opinion poll reported that 36% believe a certain governor broke campaign financing laws in his election campaign.

Given proportion = 36% =0.36

Given the margin of error = 1% =0.01

Level of significance = 99% 0 r 0.01

Z₀.₀₁ = 2.576

step(ii):-

The margin of error of Population proportion is determined by

\(M.E = \frac{Z_{0.01} \sqrt{p(1-p)} }{\sqrt{n} }\)

\(0.01 = \frac{2.576 \sqrt{0.36(1-0.36)} }{\sqrt{n} }\)

\(\sqrt{n} = \frac{2.576 \sqrt{0.36(1-0.36)} }{0.01 }\)

√n =  123.648

Squaring on both sides , we get

n =  15,267

final answer:-

The number of people would have participate in opinion poll

n =  15,267

Is numbers 9 and 10 correct ??!!

For number 9 I put : -2
For number 10 I put : 5/4, 4/5 , .75, 1.4, -5.8

Is numbers 9 and 10 correct ??!! For number 9 I put : -2 For number 10 I put : 5/4, 4/5 , .75, 1.4, -5.8

Answers

Answer:

the answers are -2 and -5.8, 0.75, 4/5, 5/4, 1.4

Step-by-step explanation:

Answer #8 that can be seen on the picture please.

Answer #8 that can be seen on the picture please.

Answers

ANSWER

\(\begin{gathered} EXPLANATION

The given triangle is an isosceles right triangle. This implies that the two angles that are not 90 degrees are equal and both have a measure of 45 degrees.

This implies that:

\(\begin{gathered} To find the missing side lengths, we have to apply the Pythagoras theorem:\(TD^2+DO^2=TO^2\)

Since it is an isosceles triangle, the two sides TD and DO are equal. This implies that:

\(\begin{gathered} TD^2+TD^2=TO^2 \\ \Rightarrow2TD^2=14^2^{}=196 \\ \Rightarrow TD^2=\frac{196}{2}=98^{} \\ \Rightarrow TD=\sqrt[]{98}=\sqrt[]{7\cdot7\cdot2} \\ TD=7\sqrt[]{2} \end{gathered}\)

Therefore:

\(DO=7\sqrt[]{2}\)

I need Help please!!!

I need Help please!!!

Answers

Step-by-step explanation:

it seems you solved the tricky part yourself already.

just to be sure, let's do the first derivative here again.

the easiest way would be for me to simply multiply the functional expression out and then do a simple derivative action ...

f(t) = (t² + 6t + 7)(3t² + 3) = 3t⁴ + 3t² + 18t³ + 18t + 21t² + 21 =

= 3t⁴ + 18t³ + 24t² + 18t + 21

f'(t) = 12t³ + 54t² + 48t + 18

and now comes the simple part (what was your problem here, don't you know how functions work ? then you are in a completely wrong class doing derivatives; for that you need to understand what functions are, and how they work). we calculate the function result of f'(2).

we simply put the input number (2) at every place of the input variable (t).

so,

f'(2) = 12×2³ + 54×2² + 48×2 + 18 = 96 + 216 + 96 + 18 =

= 426

Question content area top Part 1 Find the surface area of the prism. Question content area bottom Part 1 The surface area is enter your response here .ar prism. The base of the prism is an isosceles triangle. 41 40 cm The surface area is cm2

Answers

The surface area of the given triangular prism having an isosceles triangle   base with sides 40,41 and 43 cm, is 2274 cm².

What is area?

Area is a measure of the size of a two-dimensional shape or surface, such as a rectangle, triangle, circle, or any other shape that has length and width. It is usually expressed in square units, such as square meters, square centimeters, square feet, or square inches.

To find the surface area of a triangular prism, we need to find the area of each face of the prism and add them up.

The triangular base of the prism is an isosceles triangle with sides of 40 cm, 41 cm, and 43 cm.We may use Heron's formula to determine the area of this triangle:

s = (40 + 41 + 43) / 2 = 62

A = √(s(s-40)(s-41)(s-43)) = √(622221*19) = 798

Therefore, the area of the triangular base is 798 cm².

The height of the prism is given as 18 cm, which is also the length of the rectangular side of the prism.

The two other faces of the prism are rectangles with lengths equal to the base of the triangle (41 cm), and widths equal to the height of the prism (18 cm). The area of each rectangle is:

A = lw = 4118 = 738

Therefore, the area of both rectangles is 2*738 = 1476 cm².

The total surface area of the prism is the sum of the area of the base and the area of both rectangular sides:

Total surface area = Area of base + 2*(Area of rectangle)

Total surface area = 798 + 2*738

Total surface area = 2274 cm².

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The Thomas family just bought 4 crates of eggs, and each crate had 18 eggs. The family already had 9 eggs in their refrigerator. How many eggs do they have now?

Answers

Answer:

81

Step-by-step explanation:

4 x 18 =72 + 9 =81

PLEASE HELP I WILL GIVE BRAINLEST

PLEASE HELP I WILL GIVE BRAINLEST

Answers

Answer:

$13.80

Step-by-step explanation:

all you have to do is subtract 20 and 6.20

Answer:

hi mia its me mari

The vector (3, -7) is rotated by an angle of 3pi/4 radians and then reflected across the y-axis.

If the resulting vector is (a/b), then a =

and b =

Answers

Answer:

\(a = 2\sqrt{2}\) and \(b = 5\sqrt{2}\).

Step-by-step explanation:

The resulting vector is the product of the input and rotation vectors. That is:

\(\vec R = \left[\begin{array}{ccc}\cos \theta&\ -\sin \theta\\ \sin \theta&\cos \theta\end{array}\right] \left[\begin{array}{ccc}3\\-7\end{array}\right]\)

\(\vec R = \left[\begin{array}{ccc}3\cdot \cos \theta + 7 \cdot \sin \theta\\ 3\cdot \sin \theta - 7 \cdot \cos \theta\end{array}\right]\)

Now, the resulting vector is determined by evaluating in given angle:

\(\theta = \frac{3\pi}{4}\)

\(\vec R = \left[\begin{array}{ccc} 2\sqrt{2}\\ 5\sqrt{2}\end{array}\right]\)

The resulting vector is \((2\sqrt{2} , 5\sqrt{2})\). Then, \(a = 2\sqrt{2}\) and \(b = 5\sqrt{2}\).

Find the missing angles of 2 questions.

Find the missing angles of 2 questions.

Answers

Answer:

x= - 6

Step-by-step explanation:

\(for \: 3 \\ u = 360 - 55 - 145 - 30 - 55 = 75\)

\(for \: 4 \\ head \: opposite \: angels \\ first \\ 360 - 130 - 130 = 100 \\100 = (2x + 56 + 56) = 2x + 112 \\ 2x = 100 - 112 = - 12 \\ x = - 6\)

Write an expression that represents the number of shells in pile 2.

Answers

Answer:

2

Step-by-step explanation:

4/2=2

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