4х – Зу = 15
x - 2y = 0 solve using substitution please show work

Answers

Answer 1

Answer:

(6,3)

Step-by-step explanation:

I'm going to start with the second one.

x - 2y = 0

   +2y  +2y

x = 0 + 2y   which is the same as (x = 2y)

Now plug that in for the x-value in the other equation.

4(2y) - 3y = 15

8y - 3y = 15

5y = 15

Divide both sides by 5

y = 3

Here is where you are going to plug it back into the first one we did.

x - 2(3) = 0

x - 6 = 0

  +6   +6

x = 6

So the answer is (6,3)

Hope that helps and have a great day!


Related Questions

Express each rate as a unit rate.$8 for 2 pounds of rice

Answers

Answer:

$4 for 1 pound of rice

Step-by-step explanation:

8 ÷ 2 = 4

2 ÷ 2 = 1

Hope this helps!

I may or may not be dumb in the brain... I'll give brainliest to whoever answers first and correctly.​

Answers

Answer:

23 degrees

Step-by-step explanation:

6x + 42 = 180

x = 23

Answer:

23 Degrees

Step-by-step explanation:

6x + 42 = 180

-42. -42

6x = 138

/6. /6

× = 23

help please !
need done before 11:59

Answers

I am not 100% sure about this. However, I think the answer is the definition of a midpoint. Because it would make sense that if C is the midpoint of AG then ACM ≅CGP

round 314,759 to the number of the underlined digit

Answers

Answer:

Um I think that it might be 315,000 if that's what they mean

-3x-4=-5y-8 what is the y-intercept and x-intercept

Answers

Answer:

3/5x + 4/5 = y

or

y = 3/5x + 4/5

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To find the y-intercept just need to put 0 instead of x in the equation.

[tex] - 3(0) - 4 = - 5y - 8[/tex]

[tex] - 4 = - 5y - 8[/tex]

Add sides 8

[tex] -4 + 8 = - 5y - 8 + 8[/tex]

[tex] 4 = - 5y[/tex]

Divide sides by -5

[tex] \frac{4}{ - 5} = \frac{ - 5}{ - 5} y \\ [/tex]

[tex]y = - \frac{4}{5} \\ [/tex]

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To find the x-intercept just need to put 0 instead of y in the equation.

[tex] - 3x - 4 = - 5(0) - 8[/tex]

[tex] - 3x - 4 = - 8[/tex]

Add sides 4

[tex] - 3x - 4 + 4 = - 8 + 4[/tex]

[tex] - 3x = - 4[/tex]

Negatives simplifies

[tex]3x = 4[/tex]

Divide sides by 3

[tex] \frac{3}{3} x = \frac{4}{3} \\ [/tex]

[tex]x = \frac{4}{3} \\ [/tex]

Done...

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What is energy of an electron with frequency of 5.25 x 10^14 s-1?

Answers

Answer:

3.48*10^-19

Step-by-step explanation:

We have the equation E = hf where h is planck's constant = aroung 6.63*10^-34 and f = frequency. We can then plug in the values and get the answer above.

2. What is the equation of a line that is passing through the point (8,11) and is perpendicular to y=2x+1.

Answers

Answer:

u need to substitute (8,11) in the equation because the line passses through that point

Which of the following is true about the expression below?
164 + (36 * 192)

G

Answers

Answer:

D

Step-by-step explanation:

the addition sign means "more"

....................solve for x, 3+xc=d

Answers

Answer:

[tex]\displaystyle x=\frac{d-3}{c}[/tex]

Step-by-step explanation:

Equation solving

To solve an equation for a specific variable requires isolating the variable by performing the adequate algebraic operations.

Solve for x:

[tex]3+xc=d[/tex]

Subtract 3:

[tex]xc=d-3[/tex]

Divide by c:

[tex]\boxed{\displaystyle x=\frac{d-3}{c}}[/tex]

Sarah deposits $500 into a bank account earning 2% interest per year. The amount
(A) of money in the account at any time (t), in years, is represented by the equation
A (t) = 500(1.02)
Which best describes the equation in words?

A. The amount of money present in the account at any time is a product of 500 and a
power of 1.02.
B. The amount of money present in the account at any time is a power of 500 and a
product of 1.02.
C. The amount of money present in the account at any time is a sum of 500 and
apower of 1.02
D. The amount of money present in the account at any time is a power of 500 and a
sum of 1.02

Answers

Answer:

c

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

2/100*500=10

product is 500 and power is 1.02

PLEASE HELP!!!! help me solve 4 and 5

Answers

the first one is 87° because they are corresponding angles

The second one is 93° because they are same side interior angels

Answer:

1 is 87 and 2 is 93

Step-by-step explanation:

idrk exactly how to explain it....but i'll try....

the 87 is part of a straight angle, so the one to the left of it, that angle is 93.

1 is diagnoly oppisite of the 87, so 1 is 87. 2 is diagnoly oppisite of the other part of the striaght angle(93), so its 93

Find the value of x?

Answers

Answer:

x = 94°

Step-by-step explanation:

interior angle sum of any polygon: (s-2)×180°

with s being the number of sides.

since there are 7 sides, 7-2 = 5

5* 180°

900° = total sum

______________________________

since we know the rest of the angles, just subtract the total sum from the sum of the known angles to find the unknown one.

900°-(148°+140°+136°+142°+150°+90°) = x

900°- 806°= 94°

x= 94°

Sam makes $10.25 per hour working at Whataburger. He plans to buy a laptop for $550. Write and solve an inequality describing how
many hours h Sam will have to work to be able to buy the laptop. (Round to the next higher hour)

Answers

Answer:

53.658

Step-by-step explanation:

PLEASE can anyone help me with this problem??

Answers

9514 1404 393

Answer:

  4

Step-by-step explanation:

To find the value of g(7), locate 7 on the x-axis. Follow the grid line upward until it meets the graph (blue line). At that point, follow the grid line to the left until it meets the y-axis. Read the value from the scale on the y-axis.

  g(7) = 4

The track star runs 100m at a rate of 10.4m/s. How long did it take to run 100m?
0.1 m/s
9.65
1040m/s
0.1s

Answers

Answer:

Time, t = 9.615 secs.

Explanation:

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

[tex]Speed = \frac{distance}{time}[/tex] ....equation 1

[tex]Time = \frac{distance}{speed}[/tex] .....equation 2

Given the following data;

Distance = 100m

Speed = 10.4m/s

Substituting into equation 2;

[tex]Time = \frac{100}{10.4}[/tex]

Time, t = 9.615 secs.

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Answers

Answer:

wat we were talking about i didnt turn on my cam bc i dont want some stranger looking at my ugly a*s

Step-by-step explanation:

Which equation correctly applies the distributive property?


​70+2.028=(70⋅2)+(70⋅0.02)+(70⋅0.008)

Answers

Answer:

70.2

Step-by-step explanation:

Anwhat wht

Step-by-step explanation:

ithinkithink ok sure

Which value of x satisfies the equation
5/6 (3/8 - x)
= 16

Answers

Answer:

[tex]x = - 18.825[/tex]

Step-by-step explanation:

[tex] \frac{5}{6}( \frac{3}{8} - x)

= 16 \\ \frac{(5)(3)}{(6)(8)} - \frac{5x}{6} = 16 \\ 15 - 40x = 768\\ 40x = 15 - 768\\ x = - 18.825[/tex]

The value of x for the equation to be equal is- 40/753

Solution to linear equation

Given the linear equation expressed as:

5/6 (3/8 - x) = 16

Open the parenthesis

5/16 - 5/6x = 16

Collect the like terms

-5/6x = 16 - 5/16
-5/6x = 251/16

Cross multiply

1506x = -80
x = -80/1506
x = -40/753
Hence the value of x for the equation to be equal is- 40/753

Learn more on equation here: https://brainly.com/question/13763238

#SPJ2

your letter grade is a function of your numerical grade. what is the independent variable

Answers

Answer:

a function of your numerical grade

Step-by-step explanation:

because the sentence can not stand on its own

Sam drove 315.5 miles in 5 hours. If he drove the same number of miles each hour, how many miles did he drive per hour?

Answers

Answer:

63.1

Step-by-step explanation:   You divide 315.5 by 5 to get the answer

Answer:

Step-by-step explanation:

it  should be 315.5 or since it is and a 5 all you have to do is multiply it easy hope this helped :)

Given the equation of a linear function in standard form 2x + 3y = 12, solve for y. Select all that apply

Answers

2x+3y=12
-2x -2x
3y=-2x+12
divide everything by 3
y=-2/3x+4

What is 2 /34 × 4/5 plsssss help

Answers

Answer:

0.04705882352

Step-by-step explanation:

Yeah, I don't really have an explanation, sorry. I guess you just turn them both into decimals and multiply afterwards.

2/34 x 4/5 = 4/85, or 0.04705882...

What is the missing addend?
52,835 +
= 87,216

Answers

Answer: 34,381

Step-by-step explanation:

You have to subtract 52,835 by the sum 87,216 which will get you the answer of 34,381

The missing addend is 34,381.

87,216-52,835=34,381

{(-3, 2), (-2, 2), (1, 2), (-3, 1), (0, 3)}
Dom:
Range:
Function?

Answers

Answer:

The domain of R is {-3,-2,1,-3,0}

The range of R is: {2,1,3}

The relation R is not a function

Step-by-step explanation:

Relations and Functions

We are given the ordered pairs of a relation, let's call it R:

R={(-3, 2), (-2, 2), (1, 2), (-3, 1), (0, 3)}

The domain of R is the set of values that relate to 1 or more elements from the range.

The domain of R is {-3,-2,1,-3,0}

The range of R is: {2,1,3}

Note the value 2 is repeated in the second set, but it's reported only once as part of the Range.

A relation is a function if each element of the domain appears in only one ordered pair, or relates to a single element in the Range.

The relation R is not a function, because the ordered pairs (-3, 2) and (-3, 1)

map the element -3 twice.

What is AB? Round your answer to the nearest hundredth

Answers

Answer:

A is -3 units B is 3 units which mean -3 + 3= 0

Step-by-step explanation:

Find −6.42+8.25. Write your answer as a decimal.

−6.42+8.25=

PLEASE HELP ASAP I WILL MAKE BRAINLIEST FOR RIGHT ANSWER!
i would like an explanation too please

Answers

Answer:

1.83

Step-by-step explanation:

the sign of a number is the sign before a number therefore the sighn of 6.42 is negative(-) and the sign of 8.25 is positive(+) hence the answer is 1.83

I will mark brainliest to whoever helps! :D

Answers

Answer:

-7/2y

Step-by-step explanation:

cancel out the Z's than youre left with -7/2y :}

HELP AGAIN PLS
THX BRAIN

Answers

Answer:

last 3 are right

Step-by-step explanation:

Answer:

Answer option 2, 3 and 4.

solve this question now ​

Answers

Answer:

Center is (1,5) ;Radius is the square root of 13

Can someone help please?

Answers

Answer:

just substitute the numbers for the variable y, and see whichs are greater than or less than 6

Answer:

1

Step-by-step explanation:

13 - 7(-1) = 20 so no

13 - 7(0) = 13 so no

13 - 7(1) = 6 so yes

[is there a 2 there?] 13 - 7(2) = -1 so no

13 - 7(3) = -8 so no

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