How many solutions does this system have?
3
y = x-5
-3x+4y=-20

Answers

Answer 1

Answer:

x=0 and y=-5

Step-by-step explanation:

hope this helps!


Related Questions

How to simplify the following expression
34x-(25x-3)-18

Answers

Answer: 9x-15

Step-by-step explanation:

Given

34x-(25x-3)-18

Expand parenthesis

34x-25x+3-18

Put like terms together

(34x-25x)+(3-18)

Combine like terms

9x-15

Hope this helps!! :)

Please let me know if you have any questions

Will give brainliest!

Answers

Answer:

The number of values we can get on a standard number cube is 1,2,3,4,5,6 - and so 6 values.

Step-by-step explanation:

6^2 – 7(8 + 6. – 3^2)
The value of the expression is
?

Answers

1
Ghhvfyjbdginvff hjjjn

Help what number goes where

Answers

Answer:

The first,  4th and  6th are rational.

Step-by-step explanation:

The second, third and 5th are irrational.

The first and the last are rational and the rest are irrational

What is the area of the composite shape?

Answers

i believe the answer is 1,184. at least that’s how i understand the problem that’s how i learned it i could be wrong. 546+638=1,184.

Answer:

292 sq yd

Step-by-step explanation:

I believe you can multiply 26 x 29 and then subtract 21 x 22 from that

26 x 29 = 754

21 x 22 = 462

754 - 462 = 292

2. Which statement is not true in the equation
y = 0.5x?
A. The value of y is one-half times the value of x.
B. The equation represents an additive relationship.
C. The value of y is 4 when the value of x is 8.
D. The equation represents a multiplicative
relationship.

Answers

Answer:

B

Step-by-step explanation:

Please answer number 17 with work

Answers

The answer is
B. 31, 106 and 43.
Answer:B

Step-by-step explanation:i found out that x = 103x + 1 = 3111x - 4 = 1065x - 7 = 43

Use factoring to write an expression that is equivalent to 28w - 40.

Answers

Answer:

4(7w+10)

Step-by-step explanation:

Answer:

4(7w+10)

Step-by-step explanation:

i need help i will get a zero if i dont​

Answers

Answer:

You would multiply 7cm twice. and then multiuply 9  twice and then you add the two sums.

so 49 plus 81  is 130

so you have 130 cm.

Step-by-step explanation:

Hope this helps Im bad at math.

Which type of triangle has side measures of 5 cm, 9 cm, and 12.7 cm and one angle measure of 128°?

A.
acute isosceles

B.
obtuse scalene

C.
obtuse isosceles

D.
acute scalene

Answers

I haven’t seen a question like this in years, but I think the answer may be obtuse scalene due to the fact that the side measures are all different, (not equal) and the angle measure is 128 degrees, which is greater than 90.

This question is dealing with classification of triangles based on angles or on number of equal sides.

the triangle is called an Obtuse Scalene Triangle

Now, the classification in terms of angles are;

- Acute angle is when the angle measures between 0 and 90 degrees.

- Obtuse angle is when the angle is greater than 90 but less than 180 degrees.

- right angle is when the angle is exactly 90 degrees.

- Reflex angle is when the angle is greater than 180 but less than 360 degrees.

Now the classification in terms of equal sides;

- Isosceles triangle is one that has  2 equal sides.

- Equilateral triangle is one that has 3 equal sides.

- Scalene triangle is one that has no equal sides.

The lengths of the three sides of the triangle given are;

5 cm, 9 cm, and 12.7 cm

The three sides are not equal and from definition above it is called scalene triangle.

The angle given is 128° and from definition earlier, it is an obtuse angle.

In conclusion, the triangle is called an Obtuse Scalene Triangle

Read more at; brainly.com/question/8704415

i need help with geometry !

Answers

pretty sure it’s 157 because they’re alternate exterior angles alternate exterior angles are congruent.

Answer:

157 degrees.

Step-by-step explanation:

If lines are parallel, then alternate exterior angles are congruent.

Need help will give thanks and brainliest

Answers

Answer:

[tex]y=\frac{2}{3} x-1[/tex]

Step-by-step explanation:

Linear equations are typically organized in slope-intercept form:

[tex]y=mx+b[/tex] where [tex]m[/tex] is the slope and [tex]b[/tex] is the y-intercept (the value of y when the line intercepts the y-axis)

1) Find the slope of the line (m)

The equation for slope: [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] when the given points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]

Plug in the given points (3,1) and (6,3)

[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]=\frac{3-1}{6-3}\\=\frac{2}{3}[/tex]

Now, plugging this back into [tex]y=mx+b[/tex], our equation looks like this:

[tex]y=\frac{2}{3} x+b[/tex]

2) Find the y-intercept of the line

To find the y-intercept, we take the equation that we have so far and plug in any given point to solve for b. For example, we can use the point (3,1):

[tex]1=\frac{2}{3}*3+b\\1=2+b[/tex]

Subtract both sides by 2 to isolate b

[tex]1-2=2+b-2\\-1=b[/tex]

3) Plug m and b into y=mx+b

[tex]y=\frac{2}{3} x-1[/tex]

I hope this helps!

Given m||n, Find the value of x. Need help.

Answers

9514 1404 393

Answer:

  x = 12

Step-by-step explanation:

The two marked angles are a linear pair, so are supplementary.

  (8x -20)° +(8x +8)° = 180°

  16x -12 = 180 . . . . . . . . . . . divide by °, collect terms

  16x = 192 . . . . . . . . . . . add 12

  x = 12 . . . . . . . . . . . divide by 16

Ana ran 12.5 miles on week one of her training. On week two she ran 5 6/8 miles. How many more miles did she run on week 1 than week 2?

A. 7 5/6
B. 7 1/4
C. 17 7/10
D. 17 6/16​

Answers

Answer: C

Step-by-step explanation: My first time sorry if I am wrong

At the school election there were three candidates. Isabella got 40 votes, Amelia got 60 votes and Mason got ⅓ of the votes. How many people voted in the election?

Answers

Answer: 150 people voted in the election.

Step-by-step explanation:

Let x = Total number of votes.

Mason got [tex]\dfrac{x}{3}[/tex] votes.

Isabella got 40 votes, Amelia got 60 votes.

Then,

Combined votes = [tex]40+60+\dfrac{x}{3}=x[/tex]

[tex]100=x-\dfrac{x}{3}\\\\100=\dfrac23x\\\\ x=100\times\dfrac32\\\\ x=50\times3\\\\ x=150[/tex]

Hence, 150 people voted in the election.

Find the value of x in the kite below.
x = [?]
Enter the number that goes in the green box.
Please helppp

Answers

The value of x should be 90 degrees

What is 4(1 + 9x) ?

Answers

Answer:

36x+4

Step-by-step explanation:

4*1+4*9x

4(1 + 9x)

(4x1) + (4 x 9x)

4 + 36x

Solve the system of equations by the substitution method.
X + 8y = 21
3x + 5y = 6

The solution is .(Simplify your answer. Type and ordered pair)

Answers

67

Step-by-step explanation:

idek i guessed

Brad has $75 in his savings account and adds $25 every month he doesn't make any withdrawals from the account which inequality shows the number of months it would take Brad to save at least $200​

Answers

It would take Brad five months with adding $25 every month with a starting value of $75 in his bank account to save at least $200

The inequality representing the problem will be x+3 ≥ 8

What is inequality?

A relationship between two expressions or values that are not equal to each other is called inequality.

Given that, Brad has $75 in his savings account and adds $25 every month he doesn't make any withdrawals from the account, and saves at least $200.

Let the number of months be x,

75 + 25x ≥ 200

25(3+x) ≥ 200

x+3 ≥ 8

Hence, The inequality is x+3 ≥ 8

For more references on inequality, click;

https://brainly.com/question/28823603

#SPJ2

In Vindales wig shop 1/4 of the wigs are blonde and 1/4 of wigs are brunette. What fraction of the wigs are either blonde or brunette?

Answers

Answer:

The answer is 2/4

Step-by-step explanation:

help pls!!
A box contains 5 orange pencils, 7 green pencils, and 4 blue pencils what is the probability of randomly selecting a blue pencil from the box??

Answers

Answer:

1/4

Step-by-step explanation:

5 + 7 + 4 = 16

4/16 = 1/4

pls give me brainliest :)

You can use a table with 3 rows and 6 columns to show the sample space of combinations of a number followed by a letter using 3 numbers and 6 letters. What other table could you​ use? pleas help me

Group of answer choices

A) A table with 6 rows and 6 columns

B) A table with 6 rows and 3 columns

C) A table with 3 rows and 3 columns

D) A table with 9 rows and 2 columns

Answers

Answer:

I would probably pick letter B.

Step-by-step explanation:

If you had a table with 3 rows and 6 columns, wouldn't it be the exact same thing if you switched them up?

That would be my best guess!

Answer:

I would say B

Step-by-step explanation:

that just look like the right answer. because you would just switch them up. that is what I would choose

Find the length of a
Help plz ASAP

Answers

Answer:

Hey there!

Your answer is c)

Answer:

2√5

Step-by-step explanation:

The triangle that's shown on the page is a special isosceles right triangle with angle measures of 45° - 45° - 90°

Since one of the side length that sees 45° angle measure is 2√5 the other also has to be equal to this value so the answer is 2√5

Solve the equation

x/-2-17=-7

Answers

Answer: x= -20

Step-by-step explanation: hope it helps thx for the points

Answer:

Step-by-step explanation:

a bakery used 25% more butter this month than last month if the bakery used 240 kilograms of butter last month how much did it use this month ​

Answers

Answer:

300

Step-by-step explanation:

25% of 240 is 60.

Point D has coordinates (4, 1). What are the coordinates of Rx = 2(D)?

Answers

Answer:

The coordinates of Rₓ = [tex]2^{(D)}[/tex] = D'(0, 1)

Step-by-step explanation:

As given, D = (4, 1)

Now,

The coordinates of Rₓ = [tex]2^{(D)}[/tex] = D'(0, 1)

William has a sticker album. Some pages have 1 sticker on them, and other pages have 2 stickers on them. If William has 18 stickers, how many different ways can he put the stickers in the album?

Answers

Answer:

6 ways

Step-by-step explanation:

William has a sticker album.

We are told in the question that:

Some pages have 1 sticker on them, and other pages have 2 stickers on them. If William has 18 stickers

The many different ways that can he put the stickers in the album is calculated as:

18 stickers ÷ ( 1 stickers + 2 stickers)

= 18 ÷ 3

= 6 ways

Therefore, the different ways that he can put the stickers in the album is 6 ways

what is the sum?
[tex] \binom{3}{5} + \binom{1}{5} [/tex]

Answers

Answer:

4/5

Step-by-step explanation:

can someone please help me out with this problem ? i been trying to do this for like 2 days now and i still don’t get it .. also i need some tips on how i can remember this when im doing a different problem

Answers

Answer:

Step-by-step explanation:

the Pythagorean theorem is

c is the hypotenuse which is the side opposite of the right angle

plug the numbers into the Pythagorean theorem

[tex]x^2+(\sqrt{26})^2=13^2[/tex]

when squaring a square root, just take the number in the radical and get rid of the radical

[tex]x^2+26=169[/tex]

subtract 26 from both sides

[tex]x^2=[/tex][tex]143[/tex]

find the square root of 143

143 is prime so it can just be written as

[tex]x=\sqrt{143}[/tex]

In a lab experiment, 80 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 17 hours. How many bacteria would there be after 20 hours, to the nearest whole number?

Answers

Answer:

y = 181

Step-by-step explanation:

Doubling Formula:

[tex]y = a(2)^\frac{t}{d}[/tex]

y=80

d=17

t=20

plug in

y=80(2)[tex]^\frac{20}{17}[/tex]

y=180.818525349

y≈181

i hope this helps some!

Answer: 149

Step-by-step explanation:

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