Mathematics High School

-1/2(12x – 4) = 38
what does x equal

Answers

Answer 1

Answer:

x=−6

Step-by-step explanation:

Related Questions

John had a rock that weighed 128 kg. The scale he used to weigh the rock has a percent error of 2%. Which could be measured weights of the rock?

Answers

Answer:

a

Step-by-step explanation:

Select all equations that have two solutions. a x^2=16 b 4x^2=0 c x^2=-16 d 3x+2=14 e x^2-1=24 f (x+8)(x-8)=0

Answers

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a )

[tex] {x}^{2} = 16[/tex]

[tex]x = ± \: 4[/tex]

Two solutions.

_________________________________

b )

[tex]4 {x}^{2} = 0[/tex]

[tex]x = 0[/tex]

One solution .

_________________________________

c )

[tex] {x}^{2} = - 16[/tex]

[tex]No \: \: solution.[/tex]

_________________________________

d )

[tex]3x + 2 = 14[/tex]

[tex]x = 4[/tex]

One solution.

_________________________________

e )

[tex] {x}^{2} - 1 = 24[/tex]

[tex] {x}^{2} = 25[/tex]

[tex]x =± \: 5[/tex]

Two solutions.

_________________________________

f )

[tex](x + 8)(x - 8) = 0[/tex]

[tex]x = - 8 \: \: or \: \: x = 8[/tex]

Two solutions .

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Except from the option(c), all equations have 2 solutions.

What is an equation?

"An equation is a formula that expresses the equality of two expressions, by connecting them with the equal sign"

Given equations are:

a. x² = 16

This is a quadratic equation. This equation has two solutions.

b. 4x² = 0

This is a quadratic equation. This equation has two solutions.

c. x² = - 16  

This equation doesn't have any solution.

d. 3x + 2 = 14

This is a quadratic equation. This equation has two solutions.

e. x² - 1 = 24

This is a quadratic equation. This equation has two solutions.

f. (x + 8)(x - 8) = 0

This is a quadratic equation. This equation has two solutions.

Learn more about equations here: https://brainly.com/question/14584746

#SPJ2

Every Wednesday, Wayne works out for
3
4
of an hour at the fitness center. Every Saturday, he goes to the fitness center again and exercises for 3 times as long. How much time does Wayne spend at the fitness center in all each week?

Answers

I would say three hours?

ABC = DEF. Find the measure of the given angles.

A=×+19
D=2x

x = ​

Answers

What is the measure of the angle

3 kg of carrots cost 1.35 5kg of carrots and 2kg of potatoes cost a total of 4.15 find the cost of 1 kg of potatoes

Answers

Answer:

2.075 (scale to whatever your teacher wants)

Step-by-step explanation:

ratio of potatoes vs potato cost is 2:4.15

divide everything by two to find the cost of 1 potato

4.15/2=2.075

if you are dealing with money then your answer should either be 2.07 or 2.08  

Charly has a square carpet with the dimensions 10 by 97 inches what is the area?

Answers

Answer:

A = 970 inches²

Step-by-step explanation:

If Charly has a 'square' carpet of 10 by 97, then its not square but rectangular, with that in mind;

A = L x W

A = 10 x 97

A = 970 inches²

Hope this helps :)

Answer:

970 inches

Step-by-step explanation:

10x97=970

Length x Width = Area

I WILL GIVE BRAINLIEST FOR CORRECT ANSWER!!

Answers

Answer:

2 1/2 divided by 5/2 is 1.

6 3/4 divided by 2 1/4 is 3

3 divided by 2/3 is 9/2.

1/3 divided by 3 is 1/9.

Step-by-step explanation:

hope I helped

Answer:

i don't have an answer but im here so the guy above me can get brainliset

Step-by-step explanation:

the distributive property of 27+60 ??

Answers

Answer:

Step-by-step explanation:

27+60= 87

In a catalog a dress was on sale for $49.56 this week. It regularly sells for $66.66. If the sales tax is 6% and shipping is below, what is the total amount you will save by ordering at the sale price?

Answers

Answer:

$18.13

Step-by-step explanation:

It is correct

1/8 divided by ? = 1/40

fill in the question mark

Answers

Answer:

5

Step-by-step explanation:

1/8 divided by 5 equals 1/40

Answer:

[tex]\frac{\frac{1}{8}}{5}=\frac{1}{40}[/tex]

Step-by-step explanation:

Let 'x' be the number to which 1/8 had to be divided to get 1/40

so the equation becomes

[tex]\frac{1}{8}\div \:x=\frac{1}{40}[/tex]

[tex]\frac{\frac{1}{8}}{x}=\frac{1}{40}[/tex]

[tex]\frac{1}{8x}=\frac{1}{40}[/tex]

[tex]\mathrm{Apply\:fraction\:cross\:multiply:\:if\:}\frac{a}{b}=\frac{c}{d}\mathrm{\:then\:}a\cdot \:d=b\cdot \:c[/tex]

[tex]1\cdot \:40=8x\cdot \:1[/tex]

[tex]40=8x[/tex]

switch sides

[tex]8x=40[/tex]

Divide both sides by 8

[tex]\frac{8x}{8}=\frac{40}{8}[/tex]

[tex]x=5[/tex]

x=5 is the number.

Therefore,

1/8 divided by 5 = 1/40

i.e.

[tex]\frac{\frac{1}{8}}{5}=\frac{1}{40}[/tex]

SOLUTION CHECK

[tex]\frac{\frac{1}{8}}{5}[/tex]

[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{\frac{a}{b}}{c}=\frac{a}{b\cdot \:c}[/tex]

[tex]=\frac{1}{8\cdot \:5}[/tex]     ∵ [tex]\frac{\frac{1}{8}}{5}=\frac{1}{8\cdot \:5}[/tex]

[tex]=\frac{1}{40}[/tex]

how many times did the decimal point move if 1.56 went to 1560

Answers

Answer:

For 1.56 to get to 1560 the decimal point moved three times.

Step-by-step explanation:

To explain this I will give a visual representation.

We have to get from 1.56 to 1,560 and find out how many times it moved forwards.

0). 1.560

1). 15.60

2). 156.0

3). 1,560

as you can see it moved three times.

What is the mean?
3 0 4 7 0 4 5 3 6 8

Answers

Step-by-step explanation:

3+0+4+7+0+4+5+3+6+8/10

40/10

4

Answer:

The mean is 4.

Step-by-step explanation:

When you add 3+0+4+7+0+4+5+3+6+8 you get 40 and because there are 10 numbers you would divide 40 by 10 and get 4.

Mean-the average of all of the numbers in a data set...to find the mean you simply add all of the given numbers together and then divide that sum by the total amount of numbers given, then you will get your mean.

HOPE THIS HELPS!!!!!!!

What is the image of (-4,9) after a dialation by a scale factor of 3 centered at the origin

Answers

Answer:

-12,27

Step-by-step explanation:

PLEASE HELP!!
Cindi has $400 in her bank account. Each week she withdraws $15 for spending money. After how many weeks will her bank balance drop below $300?

Answers

I believe it is 27 weeks

Answer:

equation 400-15x. 7 weeks

Step-by-step explanation:

400-15x

What is the missing angle?

Answers

Answer:

the answer is 95

Step-by-step explanation:

[tex]180 - 50 - 35 = 95[/tex]

Answer:

105 degrees

Step-by-step explanation:

A traingle has a total of 180 degrees. The graph already tells us 2 angles, 25 and 50 degrees. So: 25+50=75

180-75=105

I need help someone pls help me I been on this for to long

Answers

Step-by-step explanation:

the explanation is above

Take key note of the dots bcz some are coloured and some aren't

Sorry I need the point put you got an answer

Write the equation y = 4x - 20 in Standard Form (AX + By = C) with integer coefficients
HELPPPP ASAPPP

Answers

Answer:

-4x + y = -20

Step-by-step explanation:

Algebra 1 TestNav answers

Answers

Can you post the image of the question?
So there for i can help

A single die is rolled twice. Find the probability of rolling an odd
number the first time and a number greater than 4 the second time.

Answers

Step-by-step explanation and answer:

The 6 sides of the die are numbered 1,2,3,4,5,6

There are 3 odd and 3 even numbers

probability of an odd number on 1st roll is:

3/6=1/2

When you want A AND B probabilities, you multiply

the events A and B

The number less than 3 are 1,2, so the probability is:

2/6=1/3

so the probability of both events are going to be:

(1/2) *(1/3)=1/6

−2x+5y=−17 3x-10y=283x−10y=28

Answers

Answer:

x = 6

y = -1

Step-by-step explanation:

-2x + 5y = -17 ------ equation 1

3x- 10y = 28 ------- equation 2

equation 1× 2

-4x + 10y = -34 ------- equation 3

equation 2 + equation 3

-x = -6

x = 6

x = 6 substitute for equation 1

-12 + 5y = -17

5y = -5

y = -1

please answer this question.i would really apreciate it

Answers

What is the question?

Help Plzzz!
Convert 122lbs to Kilograms and plz show how you got the answer!!!!!!

Answers

Answer:

55.83

Step-by-step explanation:

Divide the number of pounds by 2.2046 to use the standard equation.

Answer:

55.34 kg

Step-by-step explanation:

1 kg = 2.204 lbs

then

[tex]122 lbs\times \frac{1 \: kg}{2.204 \: lbs} [/tex]

because lbs from the numerator will goes with lbs in the denominator the only unit remains is kg

so

122 ÷ 2.204 kg = 55.34 kg

x to the third power = 1 over 8

Answers

Answer:

1/2

Step-by-step explanation:

x^3=1/8.

We know 2^3(2*2*2)=8. So 1/2*1/2*1/2=1/8.

Please help me look at the photo

Answers

Answer:

I think the answers are E = 4 ¼ F = -6 ¼ D = -3 ¼

What is the value of x2 + (2y) ÷ (2w) + 3z for w = 2, x = 5, y = 8, and z = 3?

Answers

To find the value of x² + (2y) ÷(2w) +3z , first we substitute the values of w, x, y and z

5² + 2(8) ÷ 2(2) + 3(3)

To simplify this further, we have to apply the rule of BODMAS

(Applying the rule of BODMAS simply means when you have an equation, if its having bracket, you have to remove the bracket first, then you move to powers then you proceed to dividing then subtraction and then addition)

5² + 2(8) ÷ 2(2) + 3(3)

=25 +16 ÷ 4 +9

=25 + 4 +9

=38

Therefore the value of x² + (2y) ÷(2w) +3z is 38

if the sum interior anhles of a regregrar polygon is equl to 720

find the number of side​

Answers

Answer:

The sum of interior angles of a regular polygon is 720 degree 720 720 Degree find the measure of each interior angle of the polygon

Since each angle is equal, 720 is split into 6 equal parts. So, 720/6 = 120 degrees is the measure of each interior angle.

Step-by-step explanation:

What is the y-intercept of the line?

Answers

Answer:

(0 ; 1)

Step-by-step explanation:

Have a great day

Answer:

The y-intercept of this line is 1.

Step-by-step explanation:

You can tell by looking at the y-axis (vertical line.)

Marking brainlesssss!!

Answers

Answer:

I think the answer is C. 6.75

Answer:

6.75

Step-by-step explanation:

what are the lengths of the sides of a square which has an area of 81 cm​

Answers

Answer:

9 cm

Step-by-step explanation:

If the area is 81 cm², this means that the length is 9 cm as length² of a square equals its area.

5% of students brought their lunch. 42 students brought their lunch. How many students in total are in Ridgewood Junior High School?

Answers

Answer:

840

Step-by-step explanation:

5%X20=100%

42X20=840

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