Mathematics High School

1) x+30 = 40

2) 30-20+2x=10

3) 3x-10+13=-2x+28

4) 13x-23-45=-7x+12

5) 2(x+4) = 10x+24

6) 3(x-5) = 1-(2x-4)

7) 5X -10 = 15

2

8) X + 4 = X + 6

3 2

Answers

Answer 1

1)x+30=40

x=40-30

Answer :x=10

2)30-20+2x=10

10+2x=10

2x=0

Answer: x=0

3)3x-10+13=-2x+28

3x+3=-2x+28

3x+2x+3=28

3x+2x=28-3

5x=28-3

5x=25

x=5

4)13x-23-45=-7x+12

13x-68=-7x+12

13x+7x-68=12

13x+7x=12+68

20x=12+68

20x=80

x=4

5)2(x+4)=10x+24

2x+8=10x+24

2x-10x+8=24

2x-10x=24-8

-8x=24-8

-8x=16

x=-2

6)3(x-5)=1-(2x-4)

3x-15=1-(2x-4)

3x-15=1-2x+4

3x-15=5-2x

3x+2x-15=5

3x+2x=5+15

5x=5+15

5x=20

x=4

7)5x-10=15

5x=15+10

5x=25

x=5

8)x+4=x+6

4=6

no solution

PLEASE MARK ME AS BRAINLIEST

Related Questions

I need this solved ASAP please
ratio 4:12 simplified.​

Answers

i’m not 100% certain but i’m pretty sure 1:3 works

Answer:

1/3

Step-by-step explanation:

4/12

2 goes in to 4 and 12, so 4 divide by 2 is 2 and 12 divide by 2 is 6 then you have to simplify it again since 2 can still go into 2 and 6 so 2 divide by 2 is 1 and 6 divide by 2 is 3.

Please help me I’m struggling

Answers

Answer:

$.80 or $0.80

Step-by-step explanation:

$4 = 5 apples so u divided that 4 divided 5 gives you .80

so answer is 80 cents

Answer:

$0.8 or $ .8

Step-by-step explanation:

Hopefully this helps you!

Yea I need help with fractions

Answers

Answer:

13/24

Step-by-step explanation:

1/3 + 1/8 = 11/24

1/1 - 11/24 = 13/24

(sorry if wrong)

What is the siope of the line represented by the equation y= 4/5x - 3?

Answers

Answer:

4/5

Step-by-step explanation:

Slope is "m" in the formula y=mx+b

in your equation y=4/5x-3, 4/5 is in the "m" spot, so your answer is 4/5

I just want to know the word please.​

Answers

the word is slope i believe

slope of one dotted lines:
slope of the reflection line:​

Answers

Answer:

Slope of dotted lines: 1

Slope of reflection line:​ -1

Step-by-step explanation:

For the dotted lines, the rise up by one unit and run for one unit, thus their slopes are 1.

For the reflection line, it does the same thing as the dotted line, but instead of rising one unit, it goes down for one unit and runs for one unit, making its slope -1.

Can someone help me create a slope story???

Answers

Answer:

I was walking home which I had to go up a hill I wanted to stop by the gas station which was a small hill upwords went back down that hill and the big hill to reach home.

Step-by-step explanation:

y axs = elavation

x axs = time

Hope that helped a little I need to do my hw but seen you needed help sorry if I did not help :(

50+ POINTS I NEED HELP

Answers

Answer:

21 Yards

Step-by-step explanation:

Hope This Helps

Stay Safe And Happy Holidays

Angel has an action figure collection of 300 action figures. He keeps 267 of the action figures on his wall. What percentage of Angel's action figure collection does he keep on his wall?

Answers

Answer:

89% of Angel's action figure collection keeps on his wall.

Step-by-step explanation:

Percentages

To calculate the X% of a quantity Y, we must multiply both numbers and divide by 100:

X% of Y = X * Y / 100

For example, 15% of 780 = 15 * 780 / 100 = 117

If we want to know what percentage is m with respect to n, we proceed as follows:

percentage = m / n * 100%

Anges has a 300 action figures collection, 267 of which are kept on his wall. Here m=267, n=300, thus:

percentage = 267 / 300 * 100% = 89%

89% of Angel's action figure collection keeps on his wall.

y= 2x² + 36x + 170
(Find the vertex, show steps)

Answers

This is the answer. Hope it helps!
y=2(x²+18x+85)
Find the vertex of x²+18x+85

This is written of the form ax²+bx+c

a=1, b=18, c=85

The axis of symmetry is -b/2a
The axis of symmetry is the x term of your vertex (h,k)

So we have

h=-(18)/2

h=-9

k=f(-9) given that f(x) is x²+18x+85

(-9)²+18(-9)+85

81-162+85

-81+85

4

So your k value is 4

So because you’re vertex is (h,k) and since we found that h=-9 and k=4, your vertex is (-9,4)

jerry has $115 in his savings account and $65 dollars in his checking account If Jerry deposits $20 to his savings account each week and $45 to his checking
account each week, how many weeks will it be until the two accounts have the same amount of money?

Answers

Answer:

after 2 weeks

Step-by-step explanation:

y=20x (savings account)

y=65x (checking account)

20*2 is 40. 115+40 is 155

45*2 is 90. 65+90 is 155

there are 678 freshmen ,and 552 sophomore students. how many more freshmen than sophomore students are there?​

Answers

Answer: There is 126 more freshmen than sophomores.

Step-by-step explanation:

Subtract the number of freshmen by the number of sophomores.

678 - 552 = 126

Just subtract 678-552
Which equals 126
There are 126 more freshmen than sophomore students

the town of sharon hill is a perfect squre with an area of 9 squares miles the length of each side of town measure how long ?

Answers

Answer:

2.25

Step-by-step explanation:

Since its a perfect square and you know the area, all you have to do it divide 9 by 4

what is the simplest form

Answers

Answer:

c. 5 time the square root of 3

"half the sum of 10 and a number"?

A. 1/2x + 10
B. 1/2(10)+ x
C. 1/2+10+x
D. 1/2(10+x)

Answers

Answer:

D

Step-by-step explanation:

Answer:

1/2(x+10)

Step-by-step explanation:

First find the sum

(x+10)

Then take 1/2 of it

1/2(x+10)


Look at the image above please! Could someone please do this for me. I have no idea what to do. Please its due today

Answers

Answer:

W perimeter = 40

Step-by-step explanation:

All the sides of the squares equal the same amount.

If the perimeter of R is 28 divide 28 by 4 to give you 7.

And to get the area of a square you do length x width

So T would be 3 x 3 = 9

And it you add up 7 + 3 the sides on R and T = 10

So the left side on square W = 10

To get the perimeter multiply 10*4 = 40

I'm 90% sure, but hope this helps!!!

PLEASE BRAINLIEST IS AMONG US

Answers

Answer:

4/3

Step-by-step explanation:

Answer:

Amoung sUs

Step-by-step explanation:

If f(x) = x3 – 1 and g(x) = 2x - 1, which choice is equivalent to g(f(x))?
A)
x3 - 3
B)
2x3 - 3
)
2x3 - 2
D)
223 - 1

Answers

The equivalent function of g(f(x)) for the given function  is 2x³ - 3.

Function composition is an operation × that takes two functions f and g, and produces a function h = g ∘ f such that h(x) = g(f(x)). In this operation, the function g is applied to the result of applying the function f to x.

We have been given that

f(x) = x3 – 1

g(x) = 2x - 1

and find out g(f(x)) =?

The notation for function composition is h = f • g or h(x) = (f • g)(x) and is read as 'f of g of x'. The procedure is called composition because the new function is composed of the two given functions f and g, where one function is substituted into the other.

g(f(x)) = 2(f(x))- 1

Put the value of f(x) in the equation

g(f(x)) = 2( x³ - 1) -1

g(f(x)) = 2 x³ - 2 -1

g(f(x)) = 2 x³ - 3

Hence , For the given function, 2x3 - 3 serves as the corresponding function of g(f(x)).

To learn more about Composition function

https://brainly.com/question/10687170

#SPJ1

14= 17 - 9x. help please

Answers

Step-by-step explanation:

9x= 17 - 14

9x= 3

x= 3÷9

x= 1/3

A car and a motorcycle, starting 35 miles apart, travel directly away from each other. The car averages 60 miles per hour and the motorcycle averages m miles per hour. The distance (d) between them after h hours can be determined using the equation below. Which equation could be used to find the distance between the car and the motorcycle after 2.5 hours?

Answers

Answer:

d = 60h + 35

Step-by-step explanation:

60 = Slope

35 = Y-intercept

You would just input whatever amount of time you need to the variable h in order to find the value of d.

3.4 x 10⁴ - 2.9 x 10⁵ in scientific notation ​

Answers

Answer:

-2.56E5

3.4 x 10⁴ - 2.9 x 10⁵ in scientific notation = -2.56E5

Answer: -2.56 x 10⁵

:-D

36÷2/3

pls help i no understand

Answers

It would be 54.
Easiest way to do this is to put 36 over 1. Then cross multiply and get 3(36)/2(1) which is 108/2 and that comes out to 54.

URGENT PLEASE HELP ASAP

Answers

Answer:

What do you need help with

Step-by-step explanation:

400.34 + 678.397
210

Answers

Answer:

1078.73721

Step-by-step explanation:

A plane takes off and climbs steadily for 15 minutes until it
reaches 30,000 feet. It travels at that altitude for 2 hours until
it begins to descend to land, which it takes 15 minutes at a
constant rate.

Answers

Step-by-step explanation:

Mark each mark by 15 mins add an extra tick at the time section

the corner before the first 15 min mark make a tilted line to 15 mins and 30,000 feet draw a straight line till 2 hours and 15 mins draw titled down to 2 hours and 30 mins

Completa el enunciado siguiente. Luego usa una recta numérica para hallar la suma 4 + (-7).
4+ (-7) es
unidades desde 4, en la dirección
4+(-7) es
unidades desde 4, en la dirección

Answers

Respuesta Es -3 (tried my best I’m only in Spanish two my main language is English)

y = x + z

Solve the following equation

Answers

Answer:

for y,   y = x + z

for x,   x = y - z

for z,   z = y - x

Plz mark brainliest:)

 

Answer:

[tex]x=y-z[/tex]

[tex]y = x + z[/tex]

[tex]z=y-x[/tex]

Step-by-step explanation:

[tex]y+(-z)=(x+z)+(-z)[/tex]

same as ^equation for all three ways

To solve this linear equation, we need to group all the variable terms on one side, and all the constant terms on the other side of the equation.

In our example,term [tex]x[/tex] will be moved to the left side. Notice that a term changes sign when it 'moves' from one side of the equation to the other.

To solve this linear equation, we need to group all the variable terms on one side, and all the constant terms on the other side of the equation.

In our example,term [tex]z[/tex] will be moved to the left side. Notice that a term changes sign when it 'moves' from one side of the equation to the other.

Michael joined a gym that had a membership fee of $50. Then he had to pay $20 a month. How many months was he a member if Michael spent a total of $310?

Answers

abracadabra Abracadabra Abracadabra abracadabra don't don't.

the answer is 13


you subtract 50 from 310 then you divide 20 by that number

how do i find the area of a triangle​

Answers

Answer:

The area of each triangle is one-half the area of the rectangle. So, the area A of a triangle is given by the formula A=1/2bh where b is the base and h is the height of the triangle.

Step-by-step explanation:

Mr. Logan runs 3.7 miles each day. If he runs the same distance each day, about how many miles will Mr. Logan run in 7 days?

Answers

I think it’s a total of 25.9 miles in 7 days I multiplied 3.7 with 7 days if this is not the answer then I recommend to divide I hope this helps :)
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