Mathematics High School

Describe the steps necessary to solve the following system equations:

-3x - 4y = 2 and 3x + 3y = -3

Answers

Answer 1

Answer:

(- 2, 1 )

Step-by-step explanation:

Given the 2 equations

- 3x - 4y = 2 → (1)

3x + 3y = - 3 → (2)

Adding the 2 equations term by term will eliminate the x- term, that is

0 - y = - 1

- y = - 1 ( multiply both sides by - 1 )

y = 1

Substitute y = 1 into either of the 2 equations and solve for x

Substituting into (2)

3x + 3(1) = - 3

3x + 3 = - 3 ( subtract 3 from both sides )

3x = - 6 ( divide both sides by 3 )

x = - 2

solution is (- 2, 1 )

Answer 2

Answer:

x = -2 and y = 1

Step-by-step explanation:

3x + 3y = -3, x + y = -1,  x = -y -1

-3(-y-1) - 4y = 2, 3y + 3 - 4y - 2 = 0

-y +1 = 0, y = 1

x + y = -1, x + 1 = -1, x = -2

Related Questions

can someone help me​

Answers

Step-by-step explanation:

40 ÷ 4 ( 4 sides) = 10

So each side measures 10inches

Answer:

10

Step-by-step explanation:

beacue 10x4

Answer the photo below thanks

Answers

Answer: C. Never

Similar polygon are never different shapes. They are always the same shape. As usual, read the question carefully before choosing an answer.

Step-by-step explanation: hope this help:)

What's the circumference of a
circle with a diameter of 9 inches?
Use 3.14 for pi.

Answers

Answer:

28.27433

Step-by-step explanation:

c = 2π * r

How do you write 6x (to the 3rd power) -60x (to the 2nd power) +144x in factored form?

Answers

Answer:

6x(x-4)(x-6)

Step-by-step explanation:

I assume your expression is:

6x^3-60x^2+144x.

I'll use that information.

Factor 6x^3−60x^2+144x

6x^3−60x^2+144x

=6x(x−4)(x−6)

I need help asap please​

Answers

Step-by-step explanation:

5³×1/5⁵

5×5×5×1/5×1/5×1/5×1/5×1/5

=1/25

or

1/5²

5³ × 5-⁵

5³-⁵

= 5-²

= 1
-------
5²


B

Last Sunday 1,575 people visited the amusement park. 56% of the visitors were adults, 16% were teenagers, and 28% were children ages 12 and under. Find the number of adults, teenagers, and children that visited the part.

Answers

Answer:

Adults

= Percentage of adults * Total number of people who visited

= 56% * 1,575

= 882 adults

Teenagers

= Percentage of teenagers * Total number of people who visited

= 16% * 1,575

= 252 teenagers

Children

= 28% * 1,575

= 441 children

survey of a company's employees explored the relationship between employee status and support of a new workplace safety policy The results are displayed in the following two-way frequency table. Workplace Safety Policy For Against Total Part-Time
Employee 20 60 80 Full-Time Employee 100 20 120 Total 120 BO 200 used on the table above, which of the following statements are true? There are twice as many part-time employees against the workplace safety policy than full-time employees against the workplace safety policy IL There are more employees for the workplace safety policy than against the workplace safety policy There is an equal number of part-time employees and full-time employees.​

Answers

Answer:

ll and lll

Step-by-step explanation:

if 20(mod 9) is equivalent to y(mod 6) find y
​

Answers

Answer:

First, reduce 20(mod 9) to its simplest form in mod 9; 9 x 2 + 2 = 2(mod 9)

If 2(mod 9) y(mod 6), then y = 2 by comparism

Hope it helped!!!

A typist types 450 word in one hour. How many words would he type in 10 minutes ​

Answers

Answer:

75 words in 10 mins

Step-by-step explanation:

450 words in 60 mins, 450/6 is 75 meaning he can type 75 in 10 mins.

Answer:

30 minutes ................ 450 words

1 minute ..................

30

450

=15 words

6 minutes .............. 15×6=90 words

PLEASE HELP. it is in the attachment

Answers

Answer:

<JKL=123

Step-by-step explanation:

57+57=114

360-114=246

246/2=123

<JKL=123

Answer:

angle JKL=123 degrees

Step-by-step explanation:

since sides of a rhombus are parallel, angle JKL is supplementary to angle KJM (or same side interior) so angle JKL is 180-57=123 degrees

Jaxon invested $960 in an account paying an interest rate of 6.1% compounded monthly. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach $1,720

Answers

Answer: 10 years

Step-by-step explanation:

1720=960(1+0.061/12)

PLZ HELP!!! WILL GIVE HIGHEST POINTS IF THE ANSWER IS RIGHT!!

Answers

Step-by-step explanation:

Standard polynomial is:

[tex] - 20 {x}^{3} - 3 {x}^{2} + 4x[/tex]

Leading co effecient is:

-20

what is nthe anwer
5 - 2x + 50

Answers

Step-by-step explanation:

= 55 - 2x is the answer .

plz mark my answer as brainlist if you find it useful.

Answer:

Add 5 and 50

−2x + 55

Step-by-step explanation:

What is the value of X ?

Answers

Answer:

i think x = 4

Step-by-step explanation:

30/25 = 4x-4/20
25(4x-4)=30x20
100x-100=600
100x=700
x=7

Can anyone help me please
I’ll mark brainliest.

Answers

Answer:

1. his account will be 120

2. 6 weeks

3. Yes, Lala will get 120 in 4 weeks while Andra will get 100

If you wanted to know Andra equation will be y=20x+20

Step-by-step explanation:

Hope this helped

HELP.... BRAINLIEST FOR ANYONE WHO ANSWERS
Kelly walks 1/3 mile to school. Justin’s walks 75% longer. How far does Justin walk to school?

Answers

Answer:

7/12 miles i think

Step-by-step explanation:

3/4 x 1/3 = 1/4

1/3 + 1/4 = 7/12 miles

Plz help meeeeeeee !!!!!

Answers

Answer:

answer is A

Step-by-step explanation:

simplify: -28+2r+3r+5

simplify more: 5r-23

2(-14+r) - (-3r-5)
-28+2r +3r+5
-23+5r
so, the answer is A

Hope this helps!! :)

A student received a coupon for 17% off the total purchase price at a clothing store. Let c be the
original price of the purchase. Use the expression below for the new price of the purchase. Write an
equivalent expression by combining like terms.

Answers

c - 0.17c = 0.83c
When you write “c” at the start, or x or whatever, it has an understood (invisible) number 1. So you’re subtracting the decimal on the next variable from 1.

help please!!!!!!!!!!!!!!!!!! Examine the diagram.

2 lines intersect a horizontal line to form 3 angles. The angles are 1, 90 degrees, 2.

Which statement is true about angles 1 and 2?
Angles 1 and 2 are complementary.
Angles 1 and 2 are vertical.
Angles 1 and 2 are supplementary.
Angles 1 and 2 are adjacent.

Answers

Answer:

a

Step-by-step explanation:

Answer:

the answer is a

                              :)     :)    :)

Step-by-step explanation:

Write 7,062.01 in expanded form

Answers

7000+60+2+.01=7062.01

What is the length of segment AC?​

Answers

The y difference of the 2 lines are 6(you can just count these)

The x difference of the 2 lines are 8(again you can count this)

Now calculate distance using distance formula (the pythag theorem)

sqrt(6^2+8^2)=sqrt 100= 10

Therefore the distance of AC is 10.

Neil has 2 pounds of grapes. He uses some to make a fruit salad. Now Neil has 8 ounces of grapes. How many ounces of grapes does Neil use for the fruit salad?

Answers

Answer:

Neil uses 24 ounces of grapes for the fruit salad.

Step-by-step explanation:

Quantity of grapes = 2 pounds

Use 1 pound = 16 ounces

So,

Quantity of grapes = 2(16) = 32 ounces

Neil uses some grapes to make a fruit salad. Now Neil has 8 ounces of grapes.

Quantity of grapes that Neil use for the fruit salad = [tex]32-8=24[/tex] ounces

Therefore,

Neil uses 24 ounces of grapes for the fruit salad.

On which number line do the points represent negative seven and one over two and +1? (4 points)

Answers

Answer:

A number line is used in the mathematical positioning of real numbers that include the numbers from positive infinity to negative infinity. This includes rational, irrational, fractions, and whole numbers. In this case, we are given with an expression that we have to reduce to lowest terms: negative seven and one over two and +1. The first one is equal to -7.5 while the other one is equal to +1. Positive numbers lie on the right side of zero (center of the line) while negative numbers lie on the left on the other hand. -7.5 lies between -8 and -7 while +1 lies exactly between 0 and 2. Both of which are positive numbers.

Answer:A i did the test i got A correct

Step-by-step explanation:

word problem that represents 8 times -0.25

Answers

Answer:

If bob buys 8 choclates, which each of them are 0.25 dollars each, how much money does he have if he has 0 dollars?

Step-by-step explanation:

Cual es el 5% de 80?

Answers

4 porque...
.05*80=4

Jasmine correctly answered 9 out of 10 of the game questions. What percent did she answer correctly.

Answers

90 percent because 9/10= .9, which is 90 percent when converted to a percent

Solve the following system of equations graphically on the set of axes below.
y= 2x-2
y= -x+7

Answers

Answer:

x=y + 2

2

y=2(x - 1)

Step-by-step explanation:

y=2 x -2

swap sides so that all variable terms are on the left hand side

2x - 2 =y

add 2 to both sides

2x = + 2

Divide both sides by 2.

2 x = y + 2

2. 2

Dividing by 2 undoes the multiplication by 2.

x = y + 2

2

Divide y +2 by 2.

x = y + 1

2

Where does the graph of y = -3x - 18 intersect the x-axis?

Answers

Answer:

(-6,0)

Step-by-step explanation:

Please help me! 20 points!
Enter your answer and show all the steps that you use to solve this problem in the space provided.

simplify
(in attachment)

Answers

Answer:

12 1/4 or (Decimal: 12.25)

Step-by-step explanation:

(3 1/2) (3 1/2)

= 7/2 (3 1/2)

= 7/2 (7/2)

= 49/4

= 12 1/4

   I hope I helped you!!

Step-by-step explanation:

When we multiplying, we find the sum of the exponents so

[tex]3 {}^{ \frac{1}{2} } \times 3 {}^{ \frac{1}{2} } \\ {3}^{ \frac{1}{2} + \frac{1}{2} } \\ = {3}^{ \frac{2}{2} } \\ = 3[/tex]

Find the are of the circle use 3.14 and round to your nearest hundredth using 14m

Answers

Answer:

The question is incorrect. Please rewrite the question.

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