12x -(4x+7) +2x =13 I need to find the value of x, pls help

Answers

Answer 1

Answer:

x = 2

Step-by-step explanation:

[tex]12x -(4x+7) +2x =13 \\ \\ 12x - 4x - 7 + 2x = 13 \\ \\ 8x + 2x = 13 + 7 \\ \\ 10x = 20 \\ \\ x = \frac{20}{10} \\ \\ x = 2[/tex]


Related Questions

Which is more, 3 fluid ounces or 1 pint?

Answers

Answer:

If I am correct 1 pint is greater

Step-by-step explanation:

it takes 16 fluid ounces to make a pint

Hope you understand :)

Answer:

1 pint

Step-by-step explanation:

1 pint because in 1 pint there are 16 fluid ounces

please mark brainliest

My bag of Skittles had
80 candies inside.
Twenty-four of them
were green.

Answers

ratio: 3:10
fraction: 24/80 -> 3/10
percentage: 30% (24 x 100 : 80)
decimal: 0,3

Travis spies an owl in a tall tree. He estimates the height of the tree to be 85 feet and the angle of elevation to the bird from where he stands to be 68°. The leaves on the tree make it difficult for Travis to watch the bird, so he takes several steps away from the tree to get a better view. He now estimates his angle of elevation to be 41°.
How many feet did Travis step back to gain a better view of the bird? Round your answer to the nearest hundredth of a foot.

Please help!!

Answers

Answer:

63.44 feet

Step-by-step explanation:

tan(68 degrees)= 85/y  

y tan (68 degrees)=85

y=85/tan(68 degrees) ( cross multiply)

y = 34.34 feet

tan (41 degrees)=85/x+y

(x+y)tan(41 degrees)=85

x+y=85/tan 41 degrees

x=85/tan(41 degrees) - y

x= 85/tan (41 degrees)-(34.34) (cross multiply)

Therefore, Travis stepped back 63.44 feet to gain a better view!

Dan made $208 for 13 hours of work.
At the same rate, how many hours would he have to work to make $112?

Answers

Answer:

7 hours

Step-by-step explanation:

Make proportion:

208/13 = 112/x

x = 112*13/208 = 7 hours

please answer quick

In this polygon, all angles are right angles.

What is the area of this polygon?

Enter your answer in the box.

Answers

Answer:  334 square feet

=========================================================

Explanation:

Draw a vertical line through the middle to split the figure into two rectangles.

The rectangle on the left is 21 ft by 7 ft. Its area is 21*7 = 147 sq ft.

The rectangle on the right is 24-7 = 17 ft by 21-10 = 11 ft. The area is 17*11 = 187 sq ft.

The combined area is therefore: 147+187 = 334 square feet

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

A different approach:

Draw a horizontal line through the middle to form two rectangles.

The rectangle on top is 10 ft by 7 ft with area of 10*7 = 70 sq ft.

The rectangle on the bottom is 24 ft by 12-10 = 11 ft, so its area is 24*11 = 264 sq ft.

Total area = 70+264 = 334 square feet

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

Yet another method:

Draw a horizontal line through the top most edge of the figure. Do the same for the right-most side of the figure. The two lines meet in the top right corner. This will form a rectangle that is 21 ft tall and 24 ft wide.

The area of this big new rectangle is 21*24 = 504 sq ft.

However, we don't want all of this area. We'll kick out the rectangular piece that is 10 ft tall by 24-7 = 17 ft across (in the upper right corner). The area we want to kick out is 10*17 = 170 sq ft.

The actual area we want is 504 - 170 = 334 square feet

There are probably other methods you could use to find the area of this figure.

what is 52,437 rounded to the nearest hundred?

Answers

52400 lol. lmk if there is anything else.

PLEASE HELP What is the volume of this rectangular prism?
14 ft
3 ft
6 1/4 ft
A 87 1/2 ft3
B 131 1/4 ft 3
C 252 ft3
D 262 1/2 ft

Answers

Step-by-step explanation:

25/4*14*3= 21*25/4= 262.5 ft^3

PLEASE HELP ME WITH THISSSSS

Answers

Answer:

17/3

Step-by-step explanation:

all you have to do is add 5 and 2 and you get 17 / 3  also divide by 2

Last week Connor and his roommates ate 1 1/6 cartons of yogurt, and this week they ate 3 cartons. How much more yogurt did they eat this week compared to last week?

Answers

1 5/6 3= 2 6/6 and then subtract 1 1/6 and get 1 5/6

Step-by-step explanation:

last week they ate 1 1/6 = 6/6 + 1/7 = 7/6 cartons.

this week they ate 3 = 3×6/6 = 18/6 cartons.

so, how much more did they eat ?

it is not fully clear to me, if we need to find the absolute difference in cartons, or if we need the factor between both amounts (like "how many times did they eat more ?").

to be safe I give you both.

in absolute difference :

18/6 - 7/6 = 11/6 cartons = 1 5/6 cartons more.

as factor :

7/6 × x = 18/6

7x = 18

x = 18/7

they ate 18/7 = 2 4/7 times more

There are 4 red cars and 15 black cars in a parking lot what is the ratio of black cars

Answers

Answer:

4/15

Step-by-step explanation:

Because there are 4 black and 15 red so your saying there are 4 out of 15 are black

what is the correct equation ​

Answers

Answer: y = 0.4x

In fraction form, this is y = (2/5)x

================================================

Explanation:

For each row, divide the y over x values

Row One: y/x = 0.8/2 = 0.4Row Two: y/x = 4/10 = 0.4Row Three: y/x = 6/15 = 0.4Row Four: y/x = 10/25 = 0.4

We end up with the same thing each time.

Since y/x = 0.4, this rearranges to y = 0.4x

Alternatively, you can write the equation as y = (2/5)x because 2/5 = 0.4

1: Mr. Farm is at his log cabin at (2,5). Describe the transformation Mr. Farm would take to get to his barn, but he has to stop by his wind mill first.
2: Mr. Farm finally made it to town so he could buy supplies. He is heading back home. How would you describe the transformation of his trip home? Describe transformation of his trip home. Be sure to explain what type of transformation it is and how does the transformation move.

3: Pick three of the four images. Write down the location and it's ordered pairs. (6 points total, 2 pts for each ordered pair).

Ex: School - (2,-8)

Answers

Answer:

um i dont know to be honest, but if i were you i'd just guess and hope for the best!!!

A convention center is in the shape of a rectangular pyramid with a height of 221 m. Its base measures 522 m by 500 m. Find the volume of the convention center. If necessary, round your answer to the nearest tenth.
19,227,000 m3
9,613,500 m3
57,681,000 m3
1,243 m3

Answers

Answer:

[tex]19\ 227\ 000\ m^{3}[/tex]

Step-by-step explanation:

The equation for volume of a rectangular prism is
[tex]V = \frac{hB}{3}[/tex]

[tex]B = lw[/tex]

V is volume

B is base

so if the base measures 522 multipled by 500

multiply length and width B = 522 • 500 = 261000

height is 221

V = [tex]\frac{hB}{3}[/tex]

Fill in variables V = [tex]\frac{221(251000)}{3}[/tex]

Multiply V = [tex]\frac{57681000}{3}[/tex]

Divide V = [tex]19\ 227\ 000\ m^{3}[/tex]

What is the width and height of this triangle I’ll mark the brainiest

Answers

Answer:

The base is 6.69 and the height is 6.02 (these are rounded to nearest hundredth)

Step-by-step explanation:

soh-cah-toa

cos 42 = adjacent/9

adjacent = cos 42 x 9

adjacent = 6.69

sin 42 = opposite/9

opposite = sin 42 x 9

opposite = 6.02

For what value of x is cos(x) = sin(14°), where 0° < x < 90°?
A.
76°
B.
28°
C.
31°
D.
14°

Answers

1. Observe Problem

Use crossout to determine the answer

As we approach immediately, we notice that A is the answer

For the equation  cos(x) = sin(14°) where 0° < x < 90° the value of x is 76 degrees.

We have given,

For what value of x is,

cos(x) = sin(14°),

where 0° < x < 90°

1. Observe the problem

Use cross out to determine the answer.

[tex]cosx=sin(14^0)[/tex]

What is the value of the sin(14) degrees?

The value of the sin(14) degree is 0.2491

[tex]cosx=sin(14^0)\\\\\\cosx=0.24192\\\\\\x=cos^{-1}(0.24192)[/tex]

[tex]x=76.05^0[/tex]

x=76.05 degrees.

As we approach immediately, we notice that A is the answer.

Therefore,For cos(x) = sin(14°) value of x is 76 degrees.

To learn more about the angles visit:

https://brainly.com/question/25770607

#SPJ2

The longer leg of a right triangle is 7m longer than the shorter leg. The hypotenuse is 9m longer than the shorter leg. Find the side lengths of the triangle.

Answers

Answer:

I dont really know to be honest

I need help quick an subscription service mailed 480 magazines. 15% of the magazines arrived late. how many magazines arrived late?

Answers

Answer:

72 magazines arrived late

Step-by-step explanation:

Take the total number of magazines and multiply by 15%

480 * 15%

Change the percent to decimal form

480 *.15

72

72 magazines arrived late

Write the following in terms of sine theta only.
cotangent

Answers

I don’t exactly know what you’re asking, but cotangent = cosine/sine or another way of writing it is sine = cosine/cotangent

a market has veggies for sale below is the table that shows the number of each fruit they sold what percentage of carrots did the market sell

Answers

I need to see the table to answer

For the function, find f(1)

A: 1
B: -2
C: 0
D: 4

Answers

Answer is a. 1
Since the value of x (1) is in the same spot where the value of y is

c0 and a and andand and and and andand

so If you have Dante bought 32 ounces of nuts at the store. How much is this in pounds so want do you get and I am lost.

Answers

Answer:

32 oz = 2 lbs

Step-by-step explanation:

Please help - trig identity

Answers

Answer:

[tex]( \cot(x) - \csc(x) ) \times ( \cos(x) + 1) \\ \\ \\ ( \: (\frac{1}{ \tan(x) } ) - ( \frac{1}{ \sin(x) } )) \: \times ( \cos(x) + 1) \\ \\ \\ (( \frac{1}{ \frac{ \sin(x) }{ \cos(x) } } ) - ( \frac{1}{ \sin(x) } )) \times ( \cos(x) + 1) \\ \\ (( \frac{ \cos(x) }{ \sin(x) } ) - (\frac{1}{ \sin(x) } )) \times ( \cos(x) + 1) \\ \\ \\ \frac{ \cos(x) - 1}{ \sin(x) } \times ( \cos(x) + 1) \\ \\ \\ \frac{(( \cos(x) + 1) \times ( \cos(x) - 1) }{ \sin(x) } \\ \\ \\ \frac{ { \cos }^{2}(x) - 1 }{ \sin(x) } = \frac{ { - \sin }^{2} (x)}{ \sin(x) } \\ \\ = - \sin(x) [/tex]

Giuseppe’s had orders for $798.00 of pizzas. The prices were $16 for a large pizza, $15 for a medium pizza, and $11 for a small pizza. The number of large pizzas was two less than four times the number of medium pizzas. The number of small pizzas was two more than twice the number of medium pizzas. How many of each size of pizza were ordered

Answers

Answer:

Its 840$

Step-by-step explanation:

Because keep adding by the numbers to get the answer keep adding

Sixty three and sixty three thousandths as in decimals

Answers

0.063 is the solution!

Find an equation of the circle whose diameter has endpoints (1,-5) and (-5,-3)

Answers

Answer:The solution is in the attached file below

Step-by-step explanation:

A medical researcher says that less than 25% of American adults are smokers. In a random sample of 200 adults, 28.5% say that they are smokers. At a=0.01, do you have enough evidence to reject the researcher’s claim?


a. State the null and alternative hypotheses.

b. State the Type I and Type II errors.

c. Find the critical value. Do you have enough evidence to reject the manufacturer’s claim?

d. Construct a 95% confidence interval for the difference of population means.

Answers

The medical researcher's expectation is wrong. There is enough statistical evidence to prove that 25% or more are smokers in the university.

please help me with my math work!!

Answers

Answer:

x = 6 and x = -6

Step-by-step explanation:

x² = 36

to solve for 'x' we need to take its square root but must do the same to the other side:

x = [tex]\sqrt{36}[/tex]

square roots have both positive and negative roots:

6 x 6 = 36

(-6) x (-6) = 36

x = ±6

For this exponential function,
what is the output value (y),
when the input value (x) is 3?
y = 10.5%
=
(3, [?])

Answers

Output value (y) of the y = 1.157.exponetial functio9n when x = 3 is: (3, 1,250).

What is an Exponential Function?

An exponential function is a type of function that has a constant that is raised to a given power. It is expressed as [tex]y = a^x[/tex].

Given the exponential function, [tex]y = 10 \times 5^x[/tex]

When x = 3, thus:

[tex]y = 10 \times 5^3\\\\y = 1,250[/tex]

Therefore, output value (y) of the y = 1.157.exponetial function when x = 3 is: (3, 1,250).

Learn more about exponential function on:

https://brainly.com/question/2456547

Compare the slope of the following equation and graph by determining which line is steeper.

A. The line represented by the equation has the same steepness as the line shown in the graph.

B. The line represented by the equation is steeper than the line shown in the graph.

C. The line shown in the graph is steeper than the line represented by the equation.

D. There is not enough information to determine the steepness of the lines.



Answer:


The equation is in the form y = mx, where m represents the slope.


So, the slope of the line represented by the equation is .


Use two points from the graph to determine the slope of the line shown on the graph.


The calculation shown below uses the points (0, 0) and (1, -2).


So, the slope of the graph is -2.


To determine which line is steeper, compare the absolute values of the slopes. The line whose absolute value of the slope is greater is the steeper line.


Therefore, the line shown in the graph is steeper than the line represented by the equation.

Answers

Answer:

C

Step-by-step explanation:

Which of the following is the graph of f(x) = cos(x+
+32

Answers

Answer:

B

Step-by-step explanation:

pi / 2 is equal to 180°/2 which is 90°.

Cos (90°) = 0

if cos90 = 0 then what kind of graph will we have at 90° to the x axis ?

a graph passing through the origin. (0,0)

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