for the following system, use the second equation to make a substitution for why in the first equation. Will mark brainlyest!

2x + y = 5

y + 3 = 2x

a. 2 x + 3 - 2 x = 5
b. 2 x + 2 x - 3 = 5
c. 2 x + 2 x + 3 = 5

Answers

Answer 1

Answer:

b

Step-by-step explanation:

get y by itself in the second equation: y= 2x-3

substitute this into the y of the first equation:

2x+2x-3= 5


Related Questions

Which of the following is a difference of cubes? x^6 + 27y^9 3x^9 - 64y^3 27x^{15} - 9y^3 125x^{21} - 64y^3

Answers

Answer:

D) 125x²¹- 64y³  

Step-by-step explanation:

A) x⁶ + 27y⁹ = (x²)³ + (3y³)³  - sum of cubesB) 3x⁹ - 64y³ - the first term is not a cubeC) 27x¹⁵ - 9y³ - the second term is not a cubeD) 125x²¹- 64y³ = (5x⁷)³ - (4y)³ - difference of cubes

Correct option is the last one

Answer:

D) 125x²¹- 64y³  

Step-by-step explanation:

A) x⁶ + 27y⁹ = (x²)³ + (3y³)³  - sum of cubes

B) 3x⁹ - 64y³ - the first term is not a cube

C) 27x¹⁵ - 9y³ - the second term is not a cube

D) 125x²¹- 64y³ = (5x⁷)³ - (4y)³ - difference of cubes

Correct option is the last one

Ted's company has received an order to print 10^6 pages. Ted's company has 100 machines., each of which can print 10^4 pages a day. Ted's coompany can print the 10^6 pages in 1/10 day, 1 day, 10 days, or 100 days?

Answers

Answer:

1 day because he has 100 machines not just one

Step-by-step explanation:

Determine whether a triangle with the given vertices is a scalene, isosceles, or equilateral triangle. Check all that apply.

Answers

9514 1404 393

Answer:

  (a) isosceles

  (b), (c) scalene

Step-by-step explanation:

The lengths of the sides can be found from the distance formula:

  d = √((x2 -x1)^2 +(y2 -y1)^2)

Here, there are 9 lengths to be computed, so it is useful to let a spreadsheet or graphing calculator do it.

We find triangle (a) has two sides the same length, so it is isosceles.

The other two triangles have three different side lengths, so they are scalene.

_____

Additional comment

It is impossible to specify an equilateral triangle using rational coordinates.


(0,2), (3,3), (8,7), (2,2), (3,9)
Domain :
Range:​

Answers

Answer:

Domain: ( 0, 3, 8, 2 )

Range : (2, 3, 7, 9)

Step-by-step explanation:

5+ 2 1/2 + 7 1/2 + 2 1/2+ 7 1/2 +5=

Answers

Answer:

its 30.

Step-by-step explanation:

that's all I know.

answer should be 30! hope this helps

TRIANGLE SIMILARITY & CONGRUENCE. PICTURE INCLUDED! asa,aas,sss, or sas

Answers

Answer:

AA they give you two angles

Find the area of the composite shape below.

Answers

Answer: 1106.13 (2 decimal places)

Step-by-step explanation:

To work out the area of this composite shape you would have to put the two semi circles together to form a circle and work out the area of the circle (they have provided the radius which is 11in), then work out the area of the rectangle separately.

The formula for the area of a circle is πr^2 (pi x radius squared).

So when you put the numbers in the formula the area is πx11^2=380.1327111

Then to work out the area of the rectangle you would do base x height.

The height of the rectangle is the same as the diameter of the circle (the diameter is double the radius of a circle) which is 22in.

To find the area of the rectangle you do 22x33=726

So then to find the area of the whole shape you would have to add the area of the circle and the rectangle together.

726+380.1327111=1106.13 (2 decimal places).

What is the coefficient in the term 7x-8

Answers

Answer:About "Identify the terms and coefficients" Identify the terms and coefficients : A single variable or a constant or a combination of these as a product or quotient forms a term.

Step-by-step explanation:

Answer:

I think you forgot to put the picture

Step-by-step explanation:

but try this:

A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. Variables with no number have a coefficient of 1.

1. Both of the equations shown have the same solution when solved for x. What is
the value of k? Show or explain all your work. *
5x + 34 = -2 (1 – 7x) and – 3 (4x + 3) + 4 (6x + 1) = k
Your answer
PLS HELPPPP

Answers

Answer:

Step-by-step explanation:

Fred drew 2/3 on a number line. Sara broke her number line into 6 equal pieces but found the same fraction on the number line as Fred. What fraction did Sara make?

Answers

Answer:

4 / 6

Step-by-step explanation:

Fred fraction = 2/3

Sarah formed a fraction by dividing her number line into 6 equal pieces. This is given as;

x / 6

Since her fraction is equal to that of fred, we have;

x / 6 = 2 / 3

x = 6 * 2 / 3 = 4

Sarah Fraction = 4 / 6

There are 320 students in a school. The ratio of the number of boys to the number of girls is 3:2. When some new boys and girls are admitted, the number of boys increases by 8 and the ratio of number of boys and girls changes to 4:3. Find how many new girls are admitted.​

Answers

320/5=64
64 x 3 = 192 (number of boys in the beginning)
64 x 2 = 128 (number of girls in the beginning)
192 + 8 = 200 (boys now)
200/4=50
50 x 3 = 150
150 - 128 = 22 (amount of girls added)
Number of girls added: 22

2
Find the Surface area of the prism.
(2 Points)
5 in
3 in
8 in
4 in

Answers

Answer:

The surface area of the prism is 108 square in.

I NEED HELP WITH MATH CAN ANYONE HELP!!!

Answers

Answer:

ummmmmmmmmm I can try c:

Answer:

YES MAM , WHAT SEEMS TO BE THE PROBLEM < BECAUSE I DONT SEE ONE

Step-by-step explanation:

Raju bought an old car for Rs.125000 and spent Rs.25000 on its repair . He sold the car for Rs.200000 . Find his gain or loss percent .

Answers

Answer: [tex]33.33\%[/tex]

Step-by-step explanation:

Given

Raju buy an old car for [tex]Rs\ 1,25,000[/tex]

He spent [tex]Rs\ 25000[/tex] on its repair

The selling price of the car  [tex]Rs\ 2,00,000[/tex]

So, the cost price is

[tex]\Rightarrow C.P.=1,25,000+25,000=Rs\ 1,50,000[/tex]

Here, [tex]S.P.> C.P.\quad \text{i.e. gain}[/tex]

Gain percent is

[tex]\Rightarrow \text{Gain percent}=\dfrac{2,00,000-1,50,000}{1,50,000}\times 100=\dfrac{50,000}{1,50,000}\times 100\\\Rightarrow \text{Gain percent}=33.33\ \%[/tex]

Tucker worked 5.5 hours on Saturday. He earns $7.20 per hour.
How much did he earn on Saturday?

Answers

Answer:

$39.6

Step-by-step explanation:

5.5 times 7.20 = $39.6

what is the value of x.

Answers

Answer:

x=47

Step-by-step explanation:

180-121=59

180-(59+74)=47

Answer:

x = 47

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

121° is an exterior angle of the triangle, then

x + 74 = 121 ( subtract 74 from both sides )

x = 47

write down the factors of 57 which lie between 1 and 57​

Answers

Answer:

The factors of 57 which lie between 1 and 57 are as follows:

{1,3,19,57}

Please help sbdbdbdbdbdbdndbndbbdbdbdbdb

Answers

Answer:

x ≤ [tex]\frac{7}{17}[/tex]

Step-by-step explanation:

multipy both sides by twelve

move the variable to the left side and change the sign

collect like terms

divide both sides by -17 and flip the inequality sign

A jar contains 660 beans. Of them, 440 are kidney beans and the rest are cranberry
beans. What is the ratio of kidney beans to all beans?

Answers

Answer:

Step-by-step explanation:

kidney beans : all beans

440:660 (simplify by dividing each by gcf which is 2^2(5)11=220)

2:3

Answer:

440:660 OR Simplified 2:3

Step-by-step explanation:

You already had the two numbers for the ratio, they added the cranberry beans in the sentence like that to confuse you and draw you away from the real answer. All you needed to do was arrange the numbers into a ratio, and simplify.

These problems are meant to to be confusing, so to stay away from the confusing parts, just reread them and you'll get it correct 24/7!

Hope you get this right.

4. Which of these is equal to sin(70°)?
a. cos(1109)
c. cos(20°)
b. cos(160)
d. cos(709)

Answers

C because of when you divide and multiple, the number and then you will get your answer

28.In the year 2006, the number of malaria patients admitted in the hospital of a state was 4375. Every year this number decreases by 8%. Find the number of patients in the year 2008?

Answers

Answer:number of patients in the year 2008 =3,703 Patients.

Step-by-step explanation:

Number of malaria patients admitted in the hospital of a state in 2006= 4375.

Number of malaria patients admitted in the hospital of a state in 2007 if there was Decrease by 8% in 2007

=  8% x 4375 =350

     4375-350=4,025 patients

Number of malaria patients admitted in the hospital of a state in 2008 since  there was Decrease by 8% in 2008

8% x  4,025.= 322

4,025-322=3,703 Patients.

THIS IS WORTH 24 FREAKING POINTS SO GIVE ME NO WRONG ANSWER NOW, read the question carefully and answer it correctly and carefully

Answers

Answer:

I am not the best at math but I know that u can't change the bottom half of the fraction so it would just be four and then multiply the five and the three which would be fifteen. The answer would be 15/4ths. So you want to color in 15 boxes. Hopefully I could be of some kind of help to you!

Answer:

color in 15 boxes

15/32

Step-by-step explanation:

first off, the points are split so I'm only getting 12, just so that you know.

so 1/8x1/4 is 1/32, so each box is 1/32.

5/8x3/4=15/32 (multiply the top of the first with the top of the second and the bottom of the first with the bottom of the second)

so color in 15 boxes and the answer to the multiplication is 15/32

Hope I could help!

What is the image point of (-8, -1) after a translation left 3 units
and up 4 units?

Answers

(-11,3) should be the point

Find the value of X please answer as soon as anyone can!

Answers

Answer:

139

Step-by-step explanation:

180 = x + 64+45

therefore: x = 139

Answer:

x = 109

Steps:

the sum of triangle angles is 180, and since the x is an exterior angle then 180-(64+45) = 71 and since it is an exterior angle then 180-71 = 109.

A car was valued at $30,000 in the year 2009. By 2013, the car value had depreciated to $14,000. If the
car's value continues to drop by the same percentage, what will it be worth in 2020? Round to the
nearest dollar

Answers

Answer 8,000 it adds up

a watch is sold for $130 at a loss of $30. what was the original cost of the watch​

Answers

Answer:

Step-by-step explanation:

130.00 + 30.00 =$160.00

It was at a loss, so it was reduced by 30.00

“twice the sum of a number and 6 is more than 84”

i need to write this as an inequality.

Someone please help

Answers

Step-by-step explanation:

2x + 6 > 84

2x > 78

x > 39

is the answer

Using the line ab name two line segments
Brainliest

Answers

Answer:

A. AC, CB

Step-by-step explanation:

The answer you have selected is correct because a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line that is between its endpoints. Thus the answer A is correct!

Hope this helps

All the love, Ya boi Fraser :)

Answer:

Give him brainliest!

Step-by-step explanation:

Tom made fruit punch for a party. He mixed 2 gallons of orange juice, 4 quats of pinnapple juice, 3 pints of cranberry juice. How many quarts did he make in all?

Answers

Answer:

13.5

Step-by-step explanation:

Tom made fruit punch for a party

He used the following amount of fruits

2 gallons of orange juice

= if 1 gallon is 4 quart then 2 gallon is 4×2= 8 quarts

3 pints of cranberry juice

= if 1 pint is 0.5 quart then 3 pints is 0.5×3 = 1.5 quarts

The amount of quartz he made can be calculated as follows

= 1.5 + 8 + 4

= 13.5

Hence he made 13.5 quarts of fruit punch

Please help!

Also please include an explanation so I know how to do it next time.

Answers

Answer:

48 stuff animals 24 myster boxes

Step-by-step explanation:

this is because the stuff animals have a greater than half the amount of getting. So you would then to 74/3. this is because if we split the total into thirds, we know that the stuff animals will have more than half. which will equal to 2/3. so will divide 74/3 we will 24, but since the stuff animals is 2/3 more likely, add or multiple 24 by 2 or add 24 again. giving us 48. then the remaining amount left of 74 will be left for the mystery boxers.

giving use the ration of 48:24

48 stuff animals 24 boxes
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