Mathematics College

Item 12

Solve the system of linear equations by substitution.


y−x=0

2x−5y=9

Answers

Answer 1
The answer should be 0.9
Answer 2
If I’m correct you multiply add 5y to the -5y which gives you 2x=14 since you have to add the 5y to the 9, then you proceed to divide 2x with 14 which gives you 7 so the system of the equation is 7

Related Questions

6) Tell whether -3 is a solution of the inequality.: y +6<4

A-solution

B-not a solution

Answers

Answer:

A - Yes, it's a solution

Answer:

Yes, it is a solution.

Step-by-step explanation:

The reason why it is a solution because when you plug -3 into the y and add -3+6<4, you will get -9<4. -9 is less than 4 because the 9 is a negative. Hope this helps!

3. $35 dinner; 20% tip

Answers

$35 x .2 = $7

Total cost = 42$

Rosa spent $5.76 on 8 candy necklaces. How much did each necklace cost?

Answers

Answer:

0.72 or 72 cents

Step-by-step explanation:

5.76/8=.72

Each necklace costs 78 cents

Find the midpoint of the line segment whose endpoints are (0, 1/2 ) and (0, 3/4).

A: 0,2/3
B: 0,5/8
C: 0, 1 1/4

Answers

Answer:

B: 0, 5/8

Step-by-step explanation:

First, add the abcissas (x coordinates).

0 + 0 = 0

Then, divide the result by 2.

0 divided by 2 = 0

Then, add the ordinates (y coordinates).

1/2 + 3/4 = 1 1/4

Then, divide the result by 2.

1 1/4 divided by 2 = 5/8

The midpoint is 0, 5/8

Math question:):):):):)

Answers

QR is 24 because it is two time the measure of SU.

QT is half of QR, so it is 12.

ST is 35 because it is half of PR.

A line's slope is 1/5 and its y-intercept is 10​

Answers

Answer:

plug in those values into y = mx +b

m = the slope

b= y-intercept

the equation of the line is:

y = 1/5x +10

Step-by-step explanation:

I hope this helped :)

A man spends ¼ of his salary onshoes and ⅔ on school fees, what fraction of his salary is left?​

Answers

Answer:

1/12

Step-by-step explanation:

1/4+2/3=11/12

Meaning 1/12 left

Please give brainliest, thank me and rate it 5. :)

Diana is training for a marathon. The total miles she runs varies from week to week but follows the
pattern described in the table. Diana wants to run at least 60 miles next week. What are the possible
distances she can run on Monday? Describe and graph the reasonable solutions.
Click the icon to view the training schedule.

Answers

Answer:

I got the exact question so pls hit me up when you find the answer

Step-by-step explanation:

Mya is buying juice boxes for a party

Answers

Answer:

Step-by-step explanation:

you need more info

The height of a doorway is 8 yards. What is the height of the doorway in inches?
The height of the doorway is
inches.

Answers

Answer:

288

Step-by-step explanation:

multiply the length value by 36

17.09 as a mixed number

Answers

The answer is: 17 9/100
Step-by-step-Explanation

Gina has 48 stickers. of the stickers have pictures of flowers. of the stickers have pictures of plants. The rest of the stickers have pictures of people. How many stickers have pictures of people?

Answers

Answer:

Gina has 48 stickers. of the stickers have pictures of flowers. of the stickers have pictures of plants. The rest of the stickers have pictures of people. How many stickers have pictures of people?

Step-by-step explanation:

Gina has 48 stickers. of the stickers have pictures of flowers. of the stickers have pictures of plants. The okpm of the stickers have pictures of rs have pictures of people. How many stickepeople?

Please help me white this it will be in the Picture. And do not look at Number 3

Answers

Answer:

[tex]volume = {s}^{3} \\ = ( \frac{1}{2} ) ^{3} \\ = ( \frac{ {1}^{3} }{ {2}^{3} } ) \\ = \frac{1}{9} \: {ft}^{3} [/tex]

Answer:

B

Step-by-step explanation:

1/4

Ms. Henry is drawing a scale model of the school garden. Her scale will be 1 cm per 8 ft. School Garden 8 cm 12 cm What are the actual dimensions of the school garden?​

Answers

Answer:

B. 96 ft by 64 ft

Step-by-step explanation:

Scale of drawing = 1 cm to 8 ft

Length of garden on paper = 12 cm

Actual length of garden = 12 × 8 = 96 ft

Width of garden on paper = 8 cm

Actual length of garden = 8 × 8 = 64 ft

Actual dimensions of the school garden would be 96 ft by 64 ft

Every time Mary bakes a batch of brownies, she uses 1/5 cup of chocolate. If she has 8/10 cup(s) of chocolate remaining, how many batches of brownies can Mary make? Input your answer as a whole number.
giving 35 points if u answer.

Answers

Answer:

4 batches

Step-by-step explanation:

just divide 8/10 by 1/5 to get 4 :)

Step-by-step explanation:

Number of cups of chocolate is directly proportional to the number of batches of brownies.

1/5 cups of chocolate = 1 batch of brownies

=> 8/10 cups of chocolate = (8/10) / (1/5)

= 4 batches of brownies.

Hence Mary can make 4 more batches.

You roll a dice twice. Find the probability of getting 3 in the first throw and 5 in the second throw

Answers

Answer:

its 1/36th

Step-by-step explanation:

there are 36 total outcomes

Answer:

probability

Step-by-step explanation:

Evaluate the expression
what is 2+49÷(-7)?​

Answers

Answer:

-5

Step-by-step explanation:

The answer is - 5, step by step , 2+49 =51, 51>-7 = -7.2

What is the coefficient in the inequality 3x=10?

Answers

Answer:

3.3333333333333333333333333333333

Step-by-step explanation:

so u do 10 divided by 3 =3.333333333333333333333333.

x = what i said

Can anyone answer this??

Answers

I might be able too but I don’t see anything

2.4+ (3t + 0.6)


I need help

Answers

The right answer is 3t+3

What is the coefficient of the x4-term in the binomial expansion of (x + 3)12?
12C7(3)7
12C8
12C4(3)4
12C8(3)8

Answers

Answer:

I am not sure about this question sry but u can try asking a tutor u don't need to use any points

Answer:

Step-by-step explanation:

I don't get the question do you have a picture?

Help me on this question, I'll give brainlist for the correct answer.

Answers

Answer:

Step-by-step explanation:

The first expression has value 12

The second expression has value -6

The third expression has value

4

And finally the forth expression has value 1.14

((13 + 7) = 20

(12+4) = 16

16/ (20 - 16)= 16 / 4

16/4 = 4

Answer:

c the third one

Step-by-step explanation:

((13 + 7) = 20

(12+4) = 16

16/ (20 - 16)= 16 / 4

16/4 = 4

Can y’all please help me I’m stuck and I don’t understand will mark BRAINLIEST!

Answers

Answer:

1 is x=6

2 is x=-2

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

.......................

In April, 287 people visited an amusement park. In May, 379 people visited the same amusement park. In June, twice as many people visited the amusement park as visited in April and May combined. How many people visited the amusement park in June?

Answers

Answer:

1332 i think

Step-by-step explanation:

287+379=666

666*2=1332

write a polynomial function in it's factored form with zeros 5, -1, and 2

Answers

Answer:

(x - 5)(x + 1)(x - 2) = 0

Step-by-step explanation:

If a polynomial function has roots a, b, and c, then it is (x - a)(x - b)(x - c).

The roots here are 5, 1, and 2, so the factors are

(x - 5)(x - (1))(x - 2)

The function is:

(x - 5)(x + 1)(x - 2) = 0

Find the common difference of the arithmetic sequence 13, 21, 29, ...​

Answers

The common difference is (8)

Show that x+y:x-y=3:2

Answers

We have,

x+y:x-y=3:2

To prove that, x+ y : x - y = 3:2.

x+y=3  

And,

x+y = 2      

Adding (1) and (2), we get

x+y+x-y=3+2

⇒2x=5

⇒ x =

Put x =  in (1), we get

+y=3

⇒ y=3-=

x+y:x-y=

=3:2

So, x+y:x-y=3:2.

A rectangular plot of land has an area of 115 square kilometers and a length of 23 kilometers. What is the width of the plot of land Hint: use the formula A = l x w, and replace A with the # given and length with the # given

Answers

Answer: Your answer is 5.

Step-by-step explanation: All you have to do is divide 115 and 23, and that will give you your product, 5.

What is the slope of the line shown in the graph?
A 3/2
B) 2/3
C) -3/4
D) -2/3

Answers

Answer:

D.

Step-by-step explanation:

y-intercept is (0, 3)

x-intercept is (4.5, 0)

formula to find the slope from two points is

[tex]slope = m = \frac{y2 - y1}{x2 - x1} = \frac{y1 - y2}{x1 - x2} \\ [/tex]

then the slope of the line that crosses (0, 3) & (4.5, 0) is

[tex]m = \frac{3 - 0}{0 - 4.5} = \frac{3}{ - 4.5} = - \frac{3}{ \frac{9}{2} } = - \frac{2}{3} [/tex]

D. -2/3 because when you find when the line lies on 1 point twice. Count down it would be 2 and count over it would be 3. The direction of the line is going down so that would be negative.

Find the general solution to the equation y(5) - 4y(4) + 4y(3) = 1.

Answers

Answer:

y= -1/23

Step-by-step explanation:

The equation y(5)-4y(4)+4y(3)=1 can be solved thus:

Work on brackets first:

5y-16y+12y=1

Add up y values

5y-28y=1

Divide both sides of equation

-23y=1

y=1/-23

Therefore the value of y is -1/23

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