Mathematics College

please help please really need help please

Please Help Please Really Need Help Please

Answers

Answer 1

Answer:

x = 1

y = -2

Step-by-step explanation:

5x - 2y = 9 -----------(I)

2x + 7y = -12 --------------(II)

Multiply (I) by 7          35x - 14y = 63

Multiply (II) by 2         4x + 14y  = - 24   {Now add and thus y will be eliminated}

                                  39x         =      39

                                          x = 39/39

x = 1

Plugin x = 1 in equation(I)

5*1 - 2y = 9

5 -2y = 9

    -2y = 9 -5

    -2y = 4

        y = 4/-2

        y = -2

Related Questions

At school, the maximum number of students that can be in a classroom is 25. If there are 20 students signed up for the chemistry class, how many more students can join the class? What are the solutions? Select the correct choice below and fill in the answer box to complete your choice. O A. The number of students that can join the class is at least OB. The number of students that can join the class is at most Click to select and enter your answer(s).​

Answers

Answer:

5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Four friends shared 7 chocolate bars. Each of them was given an equal share of the chocolate bars. How many chocolate bars did each person get?

Answers

Answer:

19. 25 chocolate bars

Step-by-step explanation:

77 divided by 4=19. 25

Which statement describes this pair of congruent triangles?

Answers

H and N are congruent because they are both 58 degrees,

J and L are congruent because they are both 62 degrees,

and K and M are congruent because they are both 60 degrees.

Therefore triangle HJK is congruent to triangle NLM.

Answer:

The answer is C

Step-by-step explanation:

Kause i said so

What is the volume, in cubic inches, of a cylinder whose diameter is 6
inches and whose height is 24 inches?

Answers

Hey,

The formula is V= (pie)(r squared)(height). You have all the values except the radius. Remember: radius is half of the diameter. Hope that helps!

Which equation shows the relationship between d and t?

Answers

Answer:

d=50t

Step-by-step explanation:

for every d, t is d times 50

Top one because 50x2=100 distance

The new house you bought costs $300 000 but is discounted at 20%. What is the final cost?(PLS I NEED HELP)

Answers

Answer:

240000

Step-by-step explanation:

20% x 300000 = 60000

300000 - 60000 = 240000

Can u do these for me plz fast

Answers

Answer:

nothing is there?

Step-by-step explanation:

Answer:

please there is no question

Step-by-step explanation:

where are the questions

For the proportion, find the unknown number n. 9.6/16 = n/3.2​

Answers

Answer:

n = 1.92

Step-by-step explanation:

Multiply both sides of the equation by 3.2

[tex]3.2*\frac{2}{3.2} =3.2*\frac{9.6}{16}[/tex]

Simplify both sides of the equation.

n = 1.92

good luck, i hope this helps :)

Which fraction is equivalent to 0.8?

Answers

Answer:

4/5

Step-by-step explanation:

.8 means 80/100 (divide both top and bottom by 20)

Answer: 4/5

Step-by-step explanation:

Which could a dilation result in?

Answers

Making a shape bigger and smaller

Answer:

1. A figure getting smaller

2. figure getting larger

What is the answer to this question?

Answers

Answer:

48x - 40y +24

Step-by-step explanation:

Answer:

D (48x - 40y +24)

Step-by-step explanation:

First, you need to distribute the 8 throughout the whole equation, so 8×6x=48x, 8×-5y=-40y, and 8×3=24.  Right away, you can see that the answer is D.  

please help, thanks if you do (will mark brainliest)

Answers

(4,9) is the answer!!!

Which data collections show bias? Check all that apply.
D An English teacher polls the top-ten most avid readers to find their favorite books.
O An
insurance company polls drivers of sports cars to find their average number of tickets.
O A restaurant manager surveys every tenth customer for one week.
O An assistant principal surveys each student who is sent for discipline.
D A fundraiser organizer draws five names from a hat that contains all entries.

Answers

Answer:

An insurance company polls drivers of sports cars to find their average number of tickets.

Step-by-step explanation:

It’s bias because they’re only polling people with sports cars

An English teacher polls the top ten most avid readers to find their fav books
An insure company polls drivers of sports cars
An assistant principal surveys each student

Would y^10/y^10 become 1?

Answers

Answer:

yes

Step-by-step explanation:

If you are dividing it will become 1 because 10 minus 10 equals 0. Anything to the power of 0 is 1 then you keep the base which is y so the answer is y

If you are multipling the answer will be y^10  because 10 plus 10 is 20 and you keep the base which is y

Homework due at 12:00 I need HELP. Please!!!

Answers

1= 130 yards

2= 55 yards

3= 25

There is an ample supply of identical blocks (as shown). Each block is constructed from four 1 × 1 × 1 unit-cubes glued whole-face to whole-face. What is the greatest number of such blocks that can be packed into a box that is 6 units tall, 7 units wide, and 8 units deep without exceeding the height of the box?

Answers

Answer:

72

Step-by-step explanation:

The answer is 72 because my teacher gave it to me. I promise i'm legit, and I won't lie. This is the real answer, and if you choose 336, you're probably getting it wrong. That's from Math Olympiad.


20. Juwan makes 12 baskets in 40 minutes. If he continues making baskets at this rate, how
many baskets will he make in 90 minutes? REMEMBER TO INCLUDE THE UNIT OF
MEASURE (BASKETS) WITH YOUR ANSWER.

Answers

at30 cestas é a respos

Is this expression equivalent to 1.5?

15.0 / 10
15.0 (divided by) 10

Answers

Answer:

Yes it is true

Step-by-step explanation:

15/10 equals 1.5

A trapezoid has a base 1 = 6 base = 8 and a height = 3 whats the area?

Answers

Answer:

[tex]area = 21[/tex]

Step-by-step explanation:

Area of trapezoid formula:

[tex]area = \frac{a + b}{2} h[/tex]

Given information:

a: 6

b: 8

h: 3

Using the given information,

[tex]area = \frac{6 + 8}{2} 3[/tex]

Add the numbers in the numerator

[tex]area = \frac{14}{2} 3[/tex]

Reduce fraction with 2

[tex]area = 7 \times 3[/tex]

Answer:

[tex]area = 21[/tex]

The polygons
are similar. Find the value of x.
S
X 1
9
the
R
X =

Answers

I think u should divide all of them together and u will get your answer

Diego said that the answer to the question "How many groups of ¾ are in 1?" is 4/3 or 1 1/3.


Do you agree with him? Explain...

Answers

Answer:

Step-by-step explanation:

Yes. 1 ÷ ¾ = 1 × 4/3 = 4/3 = 1⅓

After the movie 99 out of 130 people surveyed.
What is the experimental probability that the next person surveyed will say he or she liked the movie?

Answers

Answer:

19 percent

Step-by-step explanation:

yw

Zac is 18 years old.
The ratio of Zac's age to Ed's age is 2:1.
Tim's age is 2/3 Zac's age.
How old is Tim?

Answers

Answer:

Tim is 12 years

Step-by-step explanation:

Given that Zac is 18 years old and Tim's age is 2/3 Zac's age, to compute Tim's age, we would multiply Zac's age with the fraction.

Such that;

Tim's age = 2/3 * 18

= 2* 18/3

= 2 * 6

= 12 years

Hence Tim is 12 years old.

Solve. You must factor first.

8n^2-29n + 15 = 0
Please show work

Answers

(8n-5) (n-3)

8n=5. n=3

n=5/8.

PLZ HELP


Select all that apply.


The slope of the graph of a direct variation function is -3. Which of the following is true?


The point (2, -6) is on the graph of the function.

The equation is y = -3 x.

The function is linear.

The equation of the function is y = - x.

Answers

ANSWER:

The point (2, -6) is on the graph of the function.
The equation is y = -3 x.
The function is linear.
If this helps mark me brainliest thank you have a good day!’

A salt mixture has 8 parts water and 2 parts salt. Suppose one part of each is added. What is the new ratio of salt to
water?
O 2 to 9
O 3 to 8
03 to 9
O. 9 to 3

Answers

0.9 to 3 is the answer

Answer:

3 to 9 I guess...................

Can someone please help me thank you

Answers

Answer:

whats the letter x number

Step-by-step explanation:

Fluffy the bunny ate 1/3 of a carrot in the morning and she ate some more at night by the end of the day she still had 1/5 of the carrot left to eat how much of the carrot did fluffy the bunny eat at night

Answers

Answer:

2/15

Step-by-step explanation:

first you have to make both numbers have an equal denominator the subtract how much that was left from how much she Initially ate

Can someone please help

Answers

Answer:

(-4)^10

Step-by-step explanation:

When doing this sort of problem, we multiply the exponents.

This is the power rule.

-8-(-13) simplified

Answers

The answer is 5.
-8 minus -13 = 5

Answer:

5

Step-by-step explanation:

-8-(-13)

you can cross out any 2 minuses, leaving you with

-8+13

and plus and minus make minus, so

13-8

leaves you with your answer, which is 5!

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