Mathematics High School

y - 0.8x = 0.5
5y - 2.5 = 4x
*Substitution

Answers

Answer 1

Answer:

y =1.6 x

Step-by-step explanation:

hope this is right!!!

Answer 2

Answer:

y=0.5+0.8x

Step-by-step explanation:

solve for the first variable in one of the equations and then substitute the result into the other equation

Related Questions

Mai spent $2 and has less than $20.

Answers

Answer:

Mai has $18

Step-by-step explanation:

Answer:

x−2 < 20

Step-by-step explanation:

is this right!? HELP ASAP!!! WILL GIVE BRAINLIEST make sure ypur answer is correct!!​

Answers

yes your answer is correct

help please. find the values of x and y and if you feel like it, show your work

Answers

Answer:

[tex]x=4[/tex], [tex]y=61[/tex]

Step-by-step explanation:

Since the triangles are congruent, we already know that they have the same angles and sides.

We can solve for the missing side with this equation:

[tex]51=12x+3[/tex]

subtract [tex]3[/tex] from both sides

[tex]48=12x[/tex]

divide both sides by [tex]12[/tex]

[tex]x = 4[/tex]

Due to the Angle Theorems we already know [tex]2[/tex] of the angles on the triangle:

[tex]63[/tex] and [tex]56[/tex]

We can solve for the missing angle with this equation:

[tex]A+B+C=180[/tex]

[tex]63+56+y=180[/tex]

[tex]119+y=180[/tex]

subtract [tex]119[/tex] from both sides

[tex]y=61[/tex]

plz mark me brainliest. :)

3/4 is 70% of what number​

Answers

Answer:

0.5252 is the decimal form and the fraction is 21/40

I hope this helps

Step-by-step explanation:

please help me again

Answers

Answer:

still dk

Step-by-step explanation:

what is the y-intercept in the equation y=2x+5​

Answers

Answer:

y intercept=5

Step-by-step explanation:

to find Y intercept substitute the value of x as 0

Answer:

the y intercept is 5

Step-by-step explanation:

slope = mx + b

in your case:

y = slope

2x = mx

5 = y intercept

Help me out pls!! I'll give Brainliest!!

Answers

Answer: Its A

Step-by-step explanation:

Answer: D, bottom right

How much solutions does this equation have?
2x+y=3
2y=-4x+6

pls answer,, show ur work, have a great day :)) !!

Answers

Answer:

All solutions or infinite.

Step-by-step explanation:

Turn 2y = -4x + 6 into standard form - divide by 2

Y = -2x + 3

2x + y = 3

Substitute the y equation in for y.

2x - 2x + 3 = 3

The x variables cancel out.

3 = 3

Which is true so it means all solutions.

Hope this helps.

WILL GIVE BRAINLIEST!!!
What are the zeros of this function?

−8

−9 and 10

1

−2 and 4

Answers

Answer:

-2 and 4 maybe

Step-by-step explanation:

Can someone Please answer some of these questions Please ASAP Thank you:)) (20 points)

Answers

Answer:

for #1 it's 1, 4, 5, 6

for #2 it's both lines have the same slope

for #3 it's both lines have a different y-intercept

Step-by-step explanation:

#1 explanation: all of them have the y-intercept of -8

ex. y = 3x (- 8) y = 5x (-8) y = 2x (-8) y = (1/3)x (-8)

#2 explanation: both have a slope of (1/4)

#3 explanation: y = (1/4)x there is not y-intercept that we know of and y = (1/4)x - 5 the y-intercept is at -5 therefore the y-intercepts are different

gonzalo nacio el 18 de sptiembre de 1945 si bertha nacio cuatro decadas y un lustro cual es la fecha de nacimiento de bertha​

Answers

Answer: Bertha nació el 18 de septiembre de 1990.

Step-by-step explanation:

Gonzalo nació el 18 de septiembre de 1945.

Bertha nació cuatro décadas y un lustro después.

Una década son 10 años

Un lustro son 5 años

Entonces 4 décadas y un lustro son:

4*10 años + 5 años = 45 años

Esto significa que Bertha nació 45 años después que Gonzalo.

Entonces si Gonzalo nació en 1945, Bertha nació en el año:

1945 + 45 = 1990

Bertha nació el 18 de septiembre de 1990.

La fecha de nacimiento de Bertha es el 18 de septiembre de 1990.

How many years does a decade have?

A decade is composed of 10 years. So, if there are 'x' decades, then that means there are going to be [tex]10 \times x[/tex] years in it.

For this case, we are given that:
Date of birth of Gonzelo is 18th of Sept. 1945

Bertha born after 4 decades and 5 years of Gonzelo's birth.

4 decades = 4 times 10 = 40 years

Thus, 4 decades + 5 years = 40 + 5 = 45 years.

45 years after 1945 uis 1945 + 45 = 1990

Thus, date of birth of Bertha is 18th Sept. 1990

Learn more about multiplication here:

https://brainly.com/question/26816519

Please help thank you

Answers

Answer:

x=35

Step-by-step explanation:

3x+15=2x+50 (opposite angles are equal)

3x=2x+35

x=35

Help? I am confuse don how to find the area. I watched a ton of videos, but I don’t get it

Answers

Answer:

Step-by-step explanation:

The most basic area formula is the formula for the area of a rectangle. Given a rectangle with length l and width w, the formula for the area is: A = lw (rectangle). That is, the area of the rectangle is the length multiplied by the width.

soo........

u would do 10*10*10*10

and

8*8*8*8

then u add up and get ur answer

What is the answer? Yes or no

Answers

Answer:

Yes

Step-by-step explanation:

4 is less than 9

Answer:

yes

Step-by-step explanation:

4(x+2)-12=3(x-2) solve for x

Answers

Answer:

x= -2

Step-by-step explanation:

80% of C is 11 what is C

Answers

Answer:

c = 13.75

Step-by-step explanation:

Converting the words in the problem into a math equarion, we get:

80% * c = 11

0.8c = 11.

Simplifying, we get:

8c = 110

c = 13.75

Answer:

55

Step-by-step explanation:

What is the mass of 2.5 moles of carbon dioxide?

Answers

Answer:

110 grams

Step-by-step explanation:

CO2 molecule is made up of Carbon (atomic mass =12) and oxygen (atomic mass=16).

So first finding the mass of 1 molecule of CO2 which is equals to

= mass of 1 carbon atom + masses of 2 oxygen atom, we get

= 12+(16*2)= 12+32= 44 a.m.u.

Now 1 molecule of CO2 has mass 44 amu so mass of 1 mole CO2 will be 44 grams.( 1 a.m.u.=1.6729*10^-33 grams. 1 mole = 6.022*10^23, so 44 a.m.u.=73.6076*10^-33 grams approx. For one mole CO2, 73.6076*10^-33*6.022*10^23 which is approximately equals to 44 grams. )

1 mole CO2= 44grams, so 2.5 moles = 44*2.5= 110 grams

So our answer is 110 grams.

lowkey hope this helped you, good luck whatever you need it for Imaooo

solve the system: -2x+2y=4 and x+y=6

Answers

Answer:

(2,4)

Step-by-step explanation:

Answer:

(2,4)

Step-by-step explanation:

The answer is where the two lines cross

x=2

y=4

I need 3-5 ASAP PLEASE

Answers

number four is “ 35, 10 ”

Does anyone know the answer ?

Answers

the answer is K brainliest would be appreciated!

Solve the Equation n/10 + 6 = 11

Answers

Step-by-step explanation:

n/10+6=11

n/10=11-6

n/10=5

n=5x10

n=50

Answer: n=50

Tickets to a movie cost $5 for adults and $3 for students. A group of friends purchased 18
tickets for $82.00. How many adults ticket did they buy?
Write an equation

Answers

82/5=16r2 that is the answer so the brought 16 adult tickets

If cosecx = 10, then sinx is:
a. 1
b. 0.1
C. 0.5
d. None of these

Answers

Answer:

b

Step-by-step explanation:

cosecx is the reciprocal of sinx so if cosec(x) = 10 then sin (x) = 1/10

1/10 = 0.1

Which is the equation for a line that passes through the points (3 , 1) and (4 , -1) ?

y = -2x - 7

y = 2x - 7

y = 2x + 7

y = -2x + 7

Answers

Answer:

Y= -2x+7

Step-by-step explanation:

Scott makes and sells bracelets. He spends $28 on supplies, and he sells
each bracelet for $6. Write an expression that represents his profit for
selling b bracelets.

Answers

Hi there,

Recall how each bracelet sells for 6 dollars.

Hence, the expression for selling b bracelets is 6b, where b is the number of bracelets sold for the price of 6 dollars.

Profit is the actual amount of money that is earned after you subtract expenses from the total sales.

For instance, if you make $100 from selling items, and you spent $25 on your supplies, then your profit is [tex]100-25=75[/tex].

In this case, you need to subtract the $28 spent on supplies from the amount of money that you have made, which is the expression 6b.

Hence, the expression for the profit is: [tex]6b-28[/tex]

Hope that helps.

-10 = -0.2c what is c

Answers

Answer:

c=50

Step-by-step explanation:

Answer:

c = 50

Step-by-step explanation:

-0.2 multiplied by 50 would give you -10.

After a trip to the orchard, Regan and her aunt Cindy made applesauce with the apples they
picked. They used the same amount of cinnamon, but Regan used more apples than Aunt
Cindy. Whose applesauce tasted more like cinnamon?
Regan's applesauce tasted more like cinnamon,
Aunt Cindy's applesauce tasted more like cinnamon.
Neither. Both applesauces tasted the same.

Answers

Answer:

Aunt Cindy would taste more like cinnamon

14 and 15, please. I don’t really understand.

Answers

Answer:

14) 9.2  15) 12.9

Step-by-step explanation:

14) cos(52) = x/15

x = 15cos(52)

x = 9.2349

x = 9.2

15) cos(22) = 12/x

x = 12/cos(22)

x = 12.9424

x = 12.9

Please solve for x. Thank you.

Answers

Answer:

Step-by-step explanation:

so the number is 27 + x which is on ST side so the same side is CD. So we put 27 + x = 30

-27       = -27

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

     x = 3

always look at the pattern of the angles like angle DBC ~ TRS and see what its asking for

the value of x so the ratios are equivalent: 4 to 5 and x to 20.​

Answers

Answer:

x=16

Step-by-step explanation:

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