Solve the system of equations by substitution. * -8x + 2y = 4 y = 4x + 2 ​

Answers

Answer 1

Answer:

Step-by-step explanation:

-8x + 2y = 4

y = 4x + 2

Put the value of y into the first equation

-8x + 2(4x + 2) = 4                 Remove the brackets

-8x + 8x + 4 = 4                    The 8xs cancel out.

4 = 4                                     But this is useless. There is no single solution


Related Questions

Which of the following equations represents this statement

Answers

Answer: 5n = 35

Step-by-step explanation:

The product of a number n and the number 5 is 35. This statement can be formed into an equation as:

n × 5 = 35

5n = 35

The equation is 5n = 35

If we want to get the value of the number, it'll be:

5n = 35

n = 35/5

n = 7

The number is 7

Match each type of event with its probability. Unlikely event, 10greater than 0 and less than 0.50.5greater than 0.5 and less than 1Neither likely nor unlikely event likely event

Answers

Answer:

Unlikely = greater Than 0 ; less than

Likely = greater than 0.5 ; less than 1

Neither likely nor unlikely = 0.5

Step-by-step explanation:

Probability values usually range between standardized values between 0 and 1. With values closer to 1 depicting greater possibilities of an event. Probability value of zero means certain and probability value of 0 zero means.impossible.

Using this standardized values :

An unlikely event is more of not occurring than occurring (that is the event has higher chances of not happening) ;

Hence; We can categorize unliky events to range from below the mid value to greater Tha.n 0

Unlikely event : greater Than 0 ; less than 0.6

Events with probability above the mid value of 0.5 have higher chances of occurring (greater likelihood) hence, Probability is greater than 0.5 but less than 1.

Neither likely nor unlikely event will take the boundary point between likely and unlikely = 0.5

PLEASE ANSWER I DONT WANT TO FAIL

Answers

88 ( i’m so sorry if this is wrong )

Answer:

88 sq units

Step-by-step explanation:

Area of the rectangle = 14*4= 56 (length*width)

Formula for the area of a Δ = 1/2 * b * h =

1/2 * 8 * 8 =

4*8 = 32

Add:

56+32 = 88

Find the point-slope equation for
the line that passes through the
points (7, -21) and (-4, 23). Use
the first point in your equation.
y- [?] = [ ](x-[])

Answers

Answer:

[tex]y+21 = -4(x-7)[/tex]

Step-by-step explanation:

1) First, find the slope of the line between the two points. Use the slope formula, [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]. Substitute the x and y values of (7, -21) and (-4, 23) into the formula and simplify:

[tex]m = \frac{(23)-(-21)}{(-4)-(7)} \\m = \frac{23+21}{-4-7}\\m = \frac{44}{-11}\\m = -4[/tex]  

So, the slope of the line is -4.

2) Now we have all the information we need. To write the equation of the line, use the point-slope formula [tex]y-y_1 = m (x-x_1)[/tex] and substitute values for [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex].

Since [tex]m[/tex] represents the slope, substitute -4 in its place. Since [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of a point the line intersects, substitute the x and y values of (7, -21) into the equation as well. This gives the following answer:

[tex]y+21 = -4(x-7)[/tex]  

I NEED HELP ASAP I WILL GIVE BRAINLIST
A camera has a listed price of $553.98 before tax. If the sales tax rate is 7.5%, find the total cost of the camera with sales tax included. Round your answer to the nearest cent, as necessary.

Answers

519.99(.0825) = 42.899

519.99 + 42.899 = $562.89

Answer:

Sales tax---> 553.98 x 0.075= 41.5485

Total---> 553.98 + 41.5485= 595.5285

Round to nearest tenth---> 595.53 is your answer

Please help me with this. I don't know how I can thank you, but I need this ASAP. More questions coming.

Answers

Answer:

The answer you have marked is correct

Step-by-step explanation:

The angles added together equal 360

1. A rectangular fish tank 60 cm by 15 cm by 34 cm find the volume of water needed to fill the tank 2/3 of the given aquarium.

First correct answer will be brainlist ​

Answers

yes i will because 60+15 is 75

Rearrange the formula:
C = 5/9 (F - 32)
to make F the subject
help

Answers

Answer:

F = [tex]\frac{9}{5}[/tex] C + 32

Step-by-step explanation:

Given

C = [tex]\frac{5}{9}[/tex] (F - 32)

Multiply both sides by [tex]\frac{9}{5}[/tex] to clear the fraction

[tex]\frac{9}{5}[/tex] C = F - 32 ( add 32 to both sides )

[tex]\frac{9}{5}[/tex] C + 32 = F

Can anyone help me plss

Answers

Answer:

0.7 km per minute , -0.17 km per minute

Step-by-step explanation:

The computation of the average speed is shown below

As we know that

Average speed = Total distance ÷ total time

= (4 + 2 + 1) ÷ (32 + 22 + 16)

= 0.7 km per minute

Now the velocity is

= Change in displacement ÷ change in time

= (4 - 2 - 1) ÷ (32 -22 -16)

= 1 ÷ -6

= - 0.17km per minute

192.692 - 58.1987
Estimate The Difference ​

Answers

Answer: 134.4933

Step-by-step explanation: 58.1987 minus 192.692 is 134.4933

What is the value of (–7 +31) - (2-61)?

Answers

-9+9i

Hope this helped :T

PLZ HELP FAST THIS IS TIMED

Answers

Answer:

its 12 100%

Step-by-step explanation: i just did the test

Answer:

The answer for the color red is 7 and for the color blue is 13

Jackson bought a jar of 240 marbles. The percent bar graph shows the percentage of each color marble in the jar.





How many of the marbles are blue?

Answers

Answer:

84

Step-by-step explanation:

Blue marbles = 35%

35% = 0.35

240(0.35)

84

Answer:

84

Step-by-step explanation:

0.35×240=84

hope this helps

What is the distance between the points (-5, 9) and (4, 9) on the coordinate plane? 9 9 1 1 10 10 90

Answers

Answer:

9 units

Step-by-step explanation:

Given: Two points on a coordinate plane are [tex](-5,9),\,(4,9)[/tex]

To find: distance between points [tex](-5,9),\,(4,9)[/tex]

Solution:

According to the distance formula,

Distance between points [tex](a,b)[/tex] and [tex](c,d)[/tex] is equal to [tex]\sqrt{(c-a)^2+(d-b)^2}[/tex]

Take [tex](a,b)=(-5,9),\,(c,d)=(4,9)[/tex]

Therefore,

Distance between points [tex](-5,9),\,(4,9)[/tex] [tex]=\sqrt{(4+5)^2+(9-9)^2}[/tex]

                                                               [tex]=\sqrt{(9)^2}[/tex]

                                                               [tex]=9[/tex] units

Did i pick the right one?

Answers

Answer:

V= 3,14×7×3×5

= 21,98×15

= 131,94

A random sample of dogs at different animal shelters in a city shows that 10 of the 55 dogs are puppies. The city's animal shelters collectively house 1,485 dogs each year. About how many dogs in all of the city's animal shelters are puppies?

Answers

Answer: The number of dogs in all of the city's animal shelters is puppies = 270

Step-by-step explanation:

Given: A random sample of dogs at different animal shelters in a city shows that 10 of the 55 dogs are puppies.

The city's animal shelters collectively house 1,485 dogs each year.

The number of dogs in all of the city's animal shelters is puppies = [tex]1485\times\dfrac{10}{55}=270[/tex]

Hence, The number of dogs in all of the city's animal shelters is puppies = 270

Nicolas has $650 to deposit into two different savings accounts.

• Nicolas will deposit $400 into Account I, which earns 3.5% annual simple interest.
• He will deposit $250 into Account II, which earns interest compounded annually.

Nicolas will not make any additional deposits or withdrawals. Which amount is closest to the total balance of these two accounts at the end of 2 years?

Answers

Answer:

694.51

Step-by-step explanation:

can i get help please?

Answers

Answer:

c) 19

Step-by-step explanation:

9^2+17^2 = 81+289 = 370

sqrt370 = approx 19

I NEED HELP ASAPPP NO LINKS PLSS​

Answers

Answer:

heyy! im reaaally sorry if its wrong but I think its c, f, d

brainliest? :)

Step-by-step explanation:

Answer:

7= D

8= F

9= C

Step-by-step explanation:

7. x - 3 [tex]\leq[/tex] 7

     +3     +3

x [tex]\leq[/tex] 10

8. 3b < 18

   /3       /3

    b < 6

9. [tex]\frac{y}{3}[/tex] > 9

  *3    *3

 y > 27

10- 12 I am so sorry, but I don't understand these functions lol

definition of interest

Answers

Interest :
the state of wanting to know or learn about something or someone.

money paid regularly at a particular rate for the use of money lent, or for delaying the repayment of a debt.

please answer 13 and 14

Answers

Answer:

13. Option 3

14.Option 2

Step-by-step explanation:

Option 3 shows that caleb has $5 or less by using the "less than or equal to" sign

Option 2 uses a closed circle to show that $5 is included in the table.

Things to remember that helped me

Closed circle are used for < and > signs to show that the number is being included. They mean "less than or equal to (<)" and "more than or equal to(>)"

Open circles are used for < and > signs. To show that the number is NOT included in the inequality.

Also when looking at the signs < and >, Picture them as arrows. That will show you the direction on the number line they go. For example < is pointing to the left which would mean "LESS THAN" and same with >, its pointing to the right which would mean "MORE THAN"

Answer:

13 - option 3 and 14 - option 2

Step-by-step explanation:

Lynnette went to the coffee shop to buy coffee beans. She purchased 2.5 pounds of her favorite blend. This blend cost $8.50 per pound. How much did the coffee beans cost?

Answers

Answer: $21.25

Step-by-step explanation:

Given

Lynnette purchased 2.5 Pounds of blent, which costs $8.50 per pound

total cost is the Product of the amount of blend and rate of coffee blend

[tex]\Rightarrow C=2.5\times 8.50=\$21.25[/tex]

So, coffee beans cost $21.25

Pls help also no links pls

Answers

Answer:

(A)

Step-by-step explanation:

Well you gotta isolate the variable by perfoming inverse operations so you gotta dd 70 to both sides.

What is the constant of proportionality for this problem?

Answers

Answer:

$ 825

Step-by-step explanation:

10 yard = $150

55yard = ?

55yard* $150 /10yard

55*15 =825 then the correct answer of

$55 yard is 825

Please help me

Please, I beg you.

Answers

Answer:

a reflection followed by a translation

Step-by-step explanation:

Please help will mark brainliest :)

Answers

Answer:

Fraction Decimal

4/11           0.36363636   ~ the answer would be "0.36"

Step-by-step explanation:

I hope i helped :)

Help??? The answer I put was an accident and I can’t take it away

Answers

Answer:

try clicking on another option?

The function y= 15.35 (1.0279)^t represents the value y(in dollars) of a share of stock after t days. Identify the initial amount and determine the growth or decay rate.

Answers

9514 1404 393

Answer:

initial amount: $15.35growth: 2.79% per day

Step-by-step explanation:

The coefficient is the initial amount: $15.35.

The growth factor is the base of the exponential term: 1.0279. The growth rate is 1 less than this: 1.0279 -1 = 0.0279 = 2.79%. It is positive, so represents a growth of 2.79% per day.

how many more years is the avearge life span of a alligator then a tiger

Answers

Answer:

69 years

Step-by-step explanation:

Oh, hell yeah

Answer: 69 more years

Step-by-step explanation:

work out how many degrees ​

Answers

I would help but your picture doesn’t show what December is!
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