Can someone explain this step by step? I'm very confused on how to solve it. Thanks!

Can Someone Explain This Step By Step? I'm Very Confused On How To Solve It. Thanks!

Answers

Answer 1

Answer:

x = -8

Step-by-step explanation:

I will show each step algebraically. If you need further explanation, feel free to ask questions :)

[tex]\frac{x}{2} +7=3\\[/tex]                     Rewrite

[tex]\frac{x}{2} =-4[/tex]                        Subtract 7

[tex]x =-8[/tex]                        Multiply by reciprocal (2/1)

I hope this helps!

Answer 2

Answer:

X = -8

Step-by-step explanation:

So we will start with subtracting 7 from 3, which is -4.

So now you have x/2 = -4

Now we have to find what divided by 2 equals -4 so, we do 2 x -4, which is -8.

This is how we get our answer, x = -8


Related Questions

I need help now!!!!

help me need the correct answer!!!!!!!!!!!!

Answers

Step-by-step explanation:

so, the garden seems to be rectangular.

it has a length.

and width = length - 2

I assume the fence should go all around the rectangular garden.

that means it has to cover 2 lengths and 2 widths.

fence = 2×length + 2×(length - 2) =

= 2×length + 2×length - 4 = 4×length - 4 =

= 4×(length - 1)

length = 7.5 m

so, he will need

4×(7.5 - 1) = 4×6.5 = 26 meter of fencing.

A necklace has 16 charms, and each charm weighs 1 ounce. How many pounds does the necklace weigh?

A) 1/2 pound

B) 1 pound

C) 1 1/2 pounds

D) 2 pounds

Answers

Answer:

B. 1 pound

Step-by-step explanation:

16 * 1 = 16

1 ounce = 0.0625 pounds

1 pound

PLEASE HELP!!! I NEED TO KNOW HOW TO SOLVE IT

Answers

Name of the shape:

Triangular Prism  - a three sided prism "triangular base"

Surface Area of Right Triangular Prism:

Base x Height + Length(perimeter of the base)

4 x 3 + 11(3 + 5 + 4)12 + 11(12)12 + 132144 cm²

There surface area of this shape is 144 cm²

#a

Triangular prism

#b

If sides be L,B,H

Then

TSA=BH+L(Perimeter of base)

#c

Now

TSA=4(3)+11(3+5+4)TSA=12+11(12)TSA=144cm²

Find the value of this expression if x = 3.
x2 + 3/X

Answers

Answer:

7

Step-by-step explanation:

Solve the equation using inverse operations. 40=m/2

Answers

Answer:

m = 80

Step-by-step explanation:

40 = [tex]\frac{m}{2}[/tex] ( multiply both sides by 2 )

80 = m

A right triangle. the legs are labeled x(a) and 6(b), and the hypotenuse is labeled √117(c)

what is the value of x? explain your answer

please help!! will give 20 points!!!!!!!

Answers

Answer: 9

Step-by-step explanation:

Carly and Carter are comparing bedrooms. They are each getting new carpet and are trying to figure out which room will be the most expensive to cover with carpet. (The rooms are both rectangular) Carly's bedroom is 15.3 ft. long and 8.7 ft. wide. Carter's bedroom is 14.4 ft. long and 9.6 ft. wide. Which bedroom will be the most expensive to cover with carpet? Explain your steps for figuring out the area of the floor for each bedroom and determining your answer. Make sure to Show your math steps as well. ~ 100 POINTS AND ILL GIVE YOU BRAINLIEST IF YOU ANSWER CORRECTLY AND 5 SENTENCES NEEDED

Answers

If Carly's bedroom is 15.3ft long and 8.7 ft long then it is necessary to multiply them because you need to find the area of the room so 15.3*8.7= 133.11. We have to do the same for Carter's room so we multiply 14.4 and 9.6 to find the area of the room which is 138.24.

Now that we have both the areas we can compare which room is bigger. Carly's room is 133.11 ft in total and Carter's room is 138.24 ft in total. So it is clear that Carter's room is going to be more expensive to cover with carpet since Carter's room is bigger than Carly's.

Carly:-

L=15.3B=8.7

Area:-

LB15.3(8.7)133.11ft^2

#Carter

L=14.4B=9.6

Area:-

14.4(9.6)138.24ft^2

Carter's room is expensive

Find the length of the third side. If necessary, round to the nearest tenth.
4

Answers

Answer:

x=2.6

Step-by-step explanation:

We can use the Pythagorean theorem to find the third side

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

3^2 + x^2 = 4^2  where x is the unknown side

9 + x^2 = 16

Subtract 9 from each side

x^2 = 16-9

x^2 = 7

Take the square root of each side

sqrt(x^2) = sqrt(7)

x =2.645751311

Rounding to the nearest tenth

x = 2.6

Answer:

2.65

Step-by-step explanation:

take the length of the third side as x

so,take Pythagoras theorem

4^2=3^2+x^2

16=9+x^2

x^2=16-9

x^2=7

x=√7

x=2.645

x=2.65

Use trigonometry to work out the size of angle y.
+
+
11 cm
у
6 cm

Answers

Answer:

17+y

Step-by-step explanation:

Please help me solve this problem ASAP

I have a huge test coming up and I need to understand the questions

Answers

Answer:

1.25w

Step-by-step explanation:

w+0.25 is really 1w+0.25, therefore adding the two would equal 1.25w, here  is how to solve it:

[tex]w+0.25w\\1*w+0.25w\\1w+0.25w\\1.25w[/tex]

A supervisor finds the mean number of miles that the employees in a department live from work. he finds x overbar = 29 and s = 3.6. which mileage is within a z-score of 1.5? 21 miles 24 miles 36 miles 41 miles

Answers

A supervisor finds the mean number of miles that the employees in a department live from work is 24. Then the correct option is B.

What is a z-score?

The z-score is a numerical measurement used in statistics of the value's relationship to the mean of a group of values, measured in terms of standards from the mean.

The z-score is given as

[tex]z = \dfrac{x-\mu }{s}\\[/tex]

x = 29

s = 3.6

z = 1.5

Then the mean will be

[tex]1.5 = \dfrac{29 - \mu }{3.6}\\\\\mu = 29 - 5.4\\\\\mu = 23.6 \approx 24[/tex]

More about the z-score link is given below.

https://brainly.com/question/15016913

6)Janel wants to sell her grandfather's antique 1932 Ford. She begins to set her price by looking at
ads and finds these prices: $24,600, $19,000, $33,000, $15,000, and 20,000. What is the mean
price?

Answers

Prices given by

24,60019000330001500020000

Mean:-

[tex]\\ \rm\Rrightarrow \dfrac{Sum\:of\:price}{Total\:prices}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{24600+19000+33000+15000+20000}{5}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{111600}{5}[/tex]

[tex]\\ \rm\Rrightarrow 22220\$[/tex]

mean price = $22320

mean is the average of a set of given numbers

set { $24,600, $19,000, $33,000, $15,000, $20,000 }

[tex]\sf m = \dfrac{\text{sum of the terms}}{\text{number of terms}}[/tex]

total 5 number of terms.sum of terms: 24,600 + 19,000 + 33,000 + 15,000 + 20,000 = 111600

[tex]\hookrightarrow\sf mean = \dfrac{111600}{5}[/tex]

[tex]\sf \rightarrow mean = 22320[/tex]

A group of coins is shown below. What is the probability and it's compliment of randomly selecting a nickel?

Answers

Answer:

Please post the full question.

Step-by-step explanation:

I am trying to help, but the question is missing some key info.

Please dont delete, as when he posts the full thing, I will reply to this answer with the answer and explanation.

please help me with this math

Answers

Answer:

Step-by-step explanation:

Please help me with this please and thank you

Answers

Answer:

#3 is 100

#2 is west

#1 is 80

Step-by-step explanation:

How many rearrangements are there of the letters in the word "great?"

Answers

5! = 120. 120 rearrangements

it would be really helpful if i knew the answer step by step thank you

Answers

Answer:

61.3 to infinty

Step-by-step explanation:

1. Multiple: 7(8) = 56

2. Multiple: 2(4) = 8

3. Divide: the result of step 2: 3 = 8 : 3 = 2.6666666666667 = 8/43

4. Multiple: the result of step 3: 4 = 8/3

* 4 = 8 · 4/

3 · 1

= 32/

3

5. Subtract: the result of step 1 - the result of step 4 = 56 - 32/3

= 56/1

- 32/3

= 56 · 3/1 · 3

- 32/3

= 168/3

- 32/3

= 168 - 32/3

= 136/3

6. Multiple: 2(8) = 16

7. Add: the result of step 5 + the result of step 6 = 136/3

+ 16 = 136/3

+ 16/1

= 136/3

+ 16 · 3/ 1 · 3

= 136/3

+ 48/3

= 136 + 48/3

= 184/3

determine how many ways a president, vice president and treasurer can be chosen from a math club that has 7 members.

Answers

Answer:

210

Step-by-step explanation:

There are 7 choices for president.

Then there are 6 choices for vice-president.

Finally, there are 5 choices for treasurer.

7 × 6 × 5 = 210

Simplify the expression

Answers

Answer:

[tex]Hi, ~I'm ~beinggreat78,~ and~ am~ here~ to~ help~ you.[/tex]

The answer is D. Tanɵ. But why? Let's break it down. Tan pi + theta in the base equation should look like this...

[tex]\frac{tan\pi+ tanTheta}{1 - tan\pi * tanTheta}[/tex]

We now have to simplify this expression. Let's do that.

[tex]tan(\pi) = \frac{sin\pi }{cos\pi } = \frac{0}{-1} = 0[/tex]

Now that we have broken this problem into simpler fragments, we have to put it all together, The final equation should look like the one below!

[tex]tan(\pi + Theta) = \frac{0 + tanTheta}{1 - 0} = tanTheta[/tex]

With that information, we have solved the problem, your final answer is tanɵ

What have we learned?

We learned some knowledge on what simplifying expressions with complex mathematical terms looks like.

Write the measure of this missing angle

Answers

Answer:

c= 30

Step-by-step explanation:

To find the value of c, start by forming an equation using the ∠ sum of ∆ property.

c° +60° +90°= 180° (∠ sum of ∆)

Simplify:

c° + 150°= 180°

c°= 180° -150°

c°= 30°

c= 30

Notes:

The sum of the angles in a triangle is 180°, which is abbreviated as '∠ sum of ∆'. The angle indicated by a square is called a right angle, and has a value of 90°.

The length of a picture frame is 7 inches more than the width. For what values of x is the perimeter of the picture frame greater than 150 inches.

Answers

Answer:

x > 34

Step-by-step explanation:

Let x be the width of the picture frame

It then follows that the length = x + 7

Therefore, our inequality is:

[tex]2(x+7) +2x > 150\\2x+14+2x > 150\\4x > 136\\x > 34[/tex]

For all values of x greater than 34 the perimeter is greater than 150 inches.

Answer:

x is greater than 34 inches.

Step-by-step explanation:

Let x = width, then the length = x+7 inches.

Perimeter =  2(W + L) = 2(x + x + 7) = 4x + 14 , so:

4x + 14 > 150

4x > 150 - 14

4x > 136

x > 34.

sin 30° = ½ and cos 30° = fB

Answers

Answer:

True

Step-by-step explanation:

I need it in 10 minutes. How do I get these it’s just confusing me

Answers

The surface area, the lateral area and the volume are, respectively:

S = 100 mi², L = 200 mi², V = 500 mi³S ≈ 201.062 cm², L ≈ 508.938 cm², V ≈ 1809.558 cm³S = 139.5 km², L = 180 km², V = 558 km³S = 6 km², L = 108 km², V = 54 km³

How to determine the volume, the lateral area and the surface area of each solid

The volume is a measure of the space occupied by the solid, the lateral area is the measure of the area occupied by lateral faces of the solid and the surface area is the area occupied by the cross section of the solid. Please notice that the volume of each prism is equal to the product of the surface area and the height of the solid and the lateral area is the sum of the areas of the lateral faces.

In this exercise we must follow these steps to obtain the required results:

Calculate the surface area.Calculate the lateral area.Calculate the volume.

Lastly, we proceed to make the corresponding calculations:

Surface area - Figure 1

S = (10 mi)² = 100 mi²

Lateral area - Figure 1

L = 4 · (10 mi) · (5 mi) = 200 mi²

Volume - Figure 1

V = S · h = (100 mi²) · (5 mi) = 500 mi³

Surface area - Figure 2

S = 0.25 π · (16 cm)² ≈ 201.062 cm²

Lateral area - Figure 2

L = π · (18 cm) · (9 cm) ≈ 508.938 cm²

Volume - Figure 2

V = S · h = (201.062 cm²) · (9 cm) ≈ 1809.558 cm³

Surface area - Figure 3

S = 0.5 · (5) · (9 km) · (6.2 km) = 139.5 km²

Lateral area - Figure 3

L = (5) · (4 km) · (9 km) = 180 km²

Volume - Figure 3

V = S · h = (139.5 km²) · (4 km) = 558 km³

Surface area - Figure 4

S = 0.5 · (3 km) · (4 km) = 6 km²

Lateral area - Figure 4

L = (9 km) · (3 km) + (9 km) · (4 km) + (9 km) · (5 km) = 108 km²

Volume - Figure 4

V = S · h = (6 km²) · (9 km) = 54 km³

To learn more on volumes, we kindly invite to check this verified question: https://brainly.com/question/1578538

HELPPPPP LOOK AT PICTURES. I'LL GIVE BRAINLIEST!!!!

Answers

Answer:

[tex](D)\ d(r)=7\times (0,75)^2[/tex]

Step-by-step explanation:

[tex]r=0.75\ \ \ \ \ d_1=7\times 0.75\ \ \ \ \ d_2=0.75d_1=7\times 0.75^2[/tex]

[tex]so\ at\ 1\le r\le 7[/tex]

[tex]d(y)=7x(0,75)^2[/tex]

I hope this helps you

:)

on the number line,label the points that are 5 over 2 units away from 0. What is the distance between these points

Answers

Answer: 5 units

Step-by-step explanation:

5/2 = 2.5

they are 2.5 away on each side of 0 therefore the points are 5 units away from each other

A group of friends wants to go to the amusement park. They have no more than $230 to spend on parking and admission. Parking is $8, and tickets cost $27.75 per person, including tax. Write and solve an inequality which can be used to determine xx, the number of people who can go to the amusement park.

Please help me

Answers

Answer:

230=8X+27.75X

230=35.75X

x = 6 Rounded down

8*6=48

27.75*6=166.5

48+166.5=214.5

Amount of frindes can go is 6

Step-by-step explanation:

Lucia checked her online bank statement which shows the current balance is $412.76, pending withdrawals are $481.23, and pending credits are $134.00. What is Lucia's current available balance? (4 points)
−$202.47
$65.53
$123.67
$777.20

Answers

Considering the withdraws and credits, Lucia's current available balance is of $65.53.

How do we find a balance?

It is given by the sum of the money that the people has with the pending credits, and subtracted by the pending withdraws.

In this problem, we have that:

Lucia has $412.76, with pending credits of $134.00.She has pending withdraws of $481.23.

Hence, her avaiable balance is given by:

412.76 + 134 - 481.23 = $65.53.

More can be learned about balances at https://brainly.com/question/26867415

The sum of the roots of x² + 6x - 55 = 0 is:
A. 6
B. -6
C. -55

Answers

Answer:

B

Step-by-step explanation:

the sum of the roots = - [tex]\frac{b}{a}[/tex]

x² + 6x - 55 = 0

with a = 1 , b = 6 , then

sum of roots = - [tex]\frac{6}{1}[/tex] = - 6

Helppp plssssss!!!!!!

Answers

false
true
true
true
false

If John is driving 55 miles per hour down
195, how many feet per minute is he
traveling?

Answers

The feet per minute that John is travelling down 195 is 4840 feet per minute.

How many feet per minute is he traveling?

Average speed is the total distance travelled per time. It is determined by dividing total distance travelled by total time.

In order to convert 55 miles per hour to feet per minute, we have to know the unit of conversion :

1 mile = 5280 feet

1 hour = 60 minutes

55 x (5280 / 60) = 4840 feet per minute

To learn more about average speed, please check: https://brainly.com/question/21734785

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