Mathematics High School

Solve the system of linear equations by elimination. 3x−2y=4 3x−2y=4 6x−2y=−2

Answers

Answer 1
x = -2
y = -5

You can get this by multiplying the first equation by -1 and then combining. That will get your y values to cancel out. 

Related Questions

Please help if you know how to do this type of math! :)

Answers

It's just a tiny bit sloppy. The 10.2 cm should be designated with a right angle too. I'll answer it that way.

Area = (L1 + L2)*h/2
L1 = 10.2
L2 = 12.2
h = 12.6 
all givens are in cm.

Area = (10.2 + 12.2)*12.6/2
Area = 22.4 * 6.3
Area = 78.12 cm^2

In the decimal number 26.513, what number is in the tens place?

Answers

Hi ! 

In the decimal number 26.513:

2 is in the tens place.

Ken is adding a ribbon border to the edge of his kite.Two aides of the kite measure 9.5 inches,while the other two sides measure 17.8.How much ribbon does Ken need?

Answers

54.6 inches
9.5 times 2 is 19
17.8 times 2 is 35.6
19 plus 35.6 is 54.6 inches

There are 54.6 inches ribbon does Ken need.

What is Addition?

The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.

Given that;

Ken is adding a ribbon border to the edge of his kite.

Here, Two aides of the kite measure 9.5 inches, while the other two sides measure 17.8.

Hence, Total length of ribbon is,

⇒ 2 × 9.5 + 2  × 17.8

⇒ 19 + 35.6

⇒ 54.6 inches

Thus, There are 54.6 inches ribbon does Ken need.

Learn more about the addition visit:

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Find the surface area of a sphere with a radius of 30 m. leave your answer in terms of pi @Directrix

Answers

The formula for surface area of a sphere: A = 4 pi r^2.  
Since the radius is 30 m then A = 4pi30^2. 
 30^2 x 4 =3600
 A=3600pi m

What is the exact value of sin 30° ?

Enter your answer, as a simplified fraction, in the box.



Answers

To solve this problem you must apply the proccedure shown below:

 1. By defnition, sine is one of the trigonometric functions. The sine of an angle can be written as below: "sin(α)".

 2. The sine of 30 degrees, is:

 sin(30°)=1/2

 3. Therefore, the answer for the exercise shown above: sin(30°)=1/2
 

Bill takes a loan of 9,000.00 at a 8% simple interrst rate for 6 years a.how much interest will he pay after 2 years? b. how much interest will he pay in total for the loan


help plz

Answers

Final answer:

Bill will pay an interest of $1440 after 2 years and a total interest of $4320 over 6 years.

Explanation:

The subject of your question is related to simple interest calculation. The formula to calculate the simple interest is I = P * R * T, where I is the interest, P is the principal amount (initial loan), R is the annual interest rate in decimal form and T is time in years.

So when you ask 'how much interest will Bill pay after 2 years?', you plug in your values as follows: I = $9000 * 0.08 * 2 which calculates to $1440.

For the total interest Bill will pay over the 6 years, we substitute the values into the formula again but this time T = 6. So, I = $9000 * 0.08 * 6 which calculates to $4320.

Learn more about simple interest calculation here:

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Bill will pay $1,440.00 in interest after 2 years and a total of $4,320.00 in interest for the entire loan period of 6 years.

Simple interest can be calculated using the formula Interest = Principal × Rate × Time (I = PRT).

Part A: Interest After 2 Years

The principal amount is $9,000.00, the interest rate is 8%, and the time is 2 years.

Interest = 9,000 × 0.08 × 2 = 1,440

Bill will pay interest of $1,440.00 after two years.

Part B: Total Interest for the Loan

Again, using the same formula but for 6 years:

Interest = 9,000 × 0.08 × 6 = 4,320

Bill will pay a total of $4,320.00 in interest over the entire loan period.

HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

Answers

[tex]\sqrt{a}=b\iff b^2=a\\\\a\geq0\ \wedge\ b\geq0\\\\\text{therefore your answer is}\\\\\text{(A) The equation has no solutions.}[/tex]

solve
USA Highschool Geometery

Answers

The angle bisector divides the opposite side into segments proportional to the sides of the triangle.

side of length 4 is divided into segments 11 : 13. One is 4*11/24 = 11/6, the other 13/6.

side of length 11 is divided into segments 4 : 13. One is 11*4/17 = 44/17, the other is 11*13/17 = 143/17

side of length 13 is divided into segments 4 : 11. One is 13*4/15 = 52/15, the other is 13*11/15 = 143/15

Perform the indicated operation. then estimate to see whether the proposed results is reasonable. 11.58 + 11.9 + 9.2
32.68
22.68
33.68
31.68 Preform the indicated operation. Then estimate to see whether the proposed result is reasonable.
93.8 - 6.48
87.32
97.44
87.42
94.34
Preform the indicated operation. Then choose the best answer. 27.7 x 1.9 5.363
52.63
53.62
5.263 Choose the best estimate. 64.1 ÷ 97
641
6.41
0.641
6410 Use estimation to determine whether the result is reasonable or not. 108.93 x 32.6 Result: 355.112 Is it reasonable or not?

Answers

1) 32.68
2) 87.32
3) 52.63
4) 0.641
5) Unreasonable, the decimal point should be moved 1 space to the right.

Just a short answer please help :( the top

Answers

26/100 = x/82 I think that's what you want.
26 is to 100 as x is to 82

26/100 = x/82

How do you write 230% as a fraction or mixed number in simplest form?

Answers

tha t is  230/100  or 2 3/10

What is 6 divided by 1/3

Answers

6/(1/3)

to find the answer, you must flip the second fraction, and change the division into a multiplication

6 x 3

6 x 3 = 18

18 is your answer

hope this helps

What would happen to the buying power of your investment after one year if your rate of return was 3% and the rate of inflation was 3%?

Answers

Purchasing power is the value of a currency expressed in terms of the amount of goods or services that one unit of money can buy. A rate of return is the annual percentage return realized on an investment, which is adjusted for changes in prices due to inflation or other external effects.
Given: 
Rate of return = 3%Rate of inflation =3%
Buying Power = 3% - 3% = 0%
Thus, the buying power will remain same for the year.

PLEASE ANY HELPFUL PERSON HELP!!!!!!

Answers

94 + 4.5x < 175
4.5x < 175 - 94
4.5x < 81
x < 81/4.5
x < 18

Help plz!!
Graph of y equals negative 2 times x squared plus 40 x plus 600
Which of the following coordinates is not an intercept for the function?

A. (−10, 0)
B. (0, 600)
C. (0, 800)
D. (30, 0)

Answers

There would not be two Y-Intercepts, so it is either B or C
Since you can determine the intercept through the equation  y=mx+b and b in this equation is  600 so the answer is C

Answer:

0,800

Step-by-step, explanation: took test and got correct

I have another Brainliest

Answers

Answer: “A” Opportunity cost is “the value of an investment opportunity you pass up in order to take another investment opportunity .” It’s pretty much the sacrifice you make to do something else.
Ex. To earn volunteer hours, Billy decided not to go to Bob’s birthday party.

If 10*10 is 100 and 100*100 is 10000 what is 10000*10000???? ; )

Answers

Hi!

You just have to count the zeros..

10*10 (2 zero) = 100
100*100 (4 zero) =10 000
10 000*10 000 (10 zero) = 10 000 000 000

10000 * 10000 is equivalent to 10,000,000

10² is  10 × 10, which equals 100.

10⁴ is 100 × 100, which equals 10,000.

Following this pattern,

we see that large numbers can be simplified using exponents:

The number 10,000 can be written as 10⁴ because:

10 × 10 × 10 × 10 = 10,000

Now, to calculate 10,000 × 10,000:

10,000 is 10⁴, so this is:

(10⁴) × (10⁴) = 10⁸.

So, 10000 * 10000 = 10⁸ = 100,000,000.

So, 10000*10000 is 100,000,000.

Will give BRAINLIEST!! I REALLY NEED HELP..What is -1/2(-3y+10) as a equivalent expression? pls help me

Answers

Any expression has many equivalents. For something like this, it is often convenient just to make use of the distributive property.

= (-1/2)*(-3y) +(-1/2)*(10)
= (3/2)y -5

Another equivalent has a common denominator
= (3y -10)/2

look at the picture below // PLEASE HELP // 30 points

Answers

C. the circumference is the answer
thx 4 tha points!!!!!!!!!!!!!

What is the coefficient of the term of degree 2 in the polynomial below? x^6+3-2x^2+4x^7-4x a. -2 b. 3 c. -4 d. 4

Answers

we have that
x^6+3-2x^2+4x^7-4x

we know that 
the term of degree 2 in the polynomial is -2x² 
and the coefficient of the term of degree 2 is (-2)

the answer is option a) -2

Answer:

a. [tex]-2[/tex]

Step-by-step explanation:

The given polynomial is

[tex]x^6+3-2x^2+4x^7-4x[/tex]

We rewrite the polynomial in standard form to obtain;

[tex]4x^7+x^6-2x^2-4x+3[/tex]

The term of degree 2 in the polynomial is [tex]-2x^2[/tex].

The coefficient of this term is the constant that is multiplying [tex]x^2[/tex] which is [tex]-2[/tex]

A quadrilateral has angle measures of 52°, 94°, and 97°.

What is the measure of the fourth angle?

Enter your answer in the box.

Answers

The answer should be 117. Quadrilaterals add up to 360, but you only have 3 measurements, so add them up then subtract from 360 to get the remainder. 52+94+97=243. 360-243=117

A quadrilateral has angle measures of 52°, 94°, and 97°.

What is the measure of the fourth angle?

Enter your answer in the box.

Answer: 117

Step-by-step explanation:

The center of a circle is at (−2, −7) and its radius is 6.

What is the equation of the circle?


(x−2)2+(y−7)2=36

(x−2)2+(y−7)2=3

(x+2)2+(y+7)2=3

(x+2)2+(y+7)2=36



The equation of a circle is (x+4)2+(y−5)2=121.

What is the center and radius of the circle?


center: (4, −5); radius: 11

center: (−4, 5); radius: 121

center: (−4, 5); radius: 11

center: (−4, −5); radius: 121

Answers

1.) equation of the circle is (x+2)2 + (y+7)2 = 36
2.) center: (-4, 5) radius 11

Answer:

1. option D is correct;  [tex](x+2)^2+(y+7)^2=36[/tex]  

2. option C is correct; center: (-4, 5) and radius = 11 unit

Step-by-step explanation:

The general equation of the circle is given by:

[tex](x-h)^2+(y-k)^2=r^2[/tex]                .....[1]

where,

(h, k) is the center of the circle and r is the radius of the circle.

1.

As per the statement:

The center of a circle is at (−2, −7) and its radius is 6.

⇒(h, k) = (-2, -7) and r = 6 units

Substitute these in [1] we have;

[tex](x-(-2))^2+(y-(-7))^2=6^2[/tex]  

⇒[tex](x+2)^2+(y+7)^2=36[/tex]  

Therefore, the equation of circle is, [tex](x+2)^2+(y+7)^2=36[/tex]  

2.

As per the statement:

The equation of a circle is:

[tex](x+4)^2+(y-5)^2 = 121[/tex]

We can write this as:

[tex](x-(-4))^2+(y-5)^2 = 11^2[/tex]

On comparing with equation [1] we have;

(h, k) = (-4, 5) and r = 11 units

Therefore, the center and radius of the circle is,

center: (-4, 5) and radius = 11 unit

Someone please explain how the GCF of x^4 and x^3 equals x^3. This has me stumped.

Answers


GCF is the greatest common factor. its the value of the factors that are common to both the numbers being compared. In other words the product of the factors that are common to both numbers or the greatest factor common to both numbers.
factors of x⁴ = x * x * x * x = (x * x * x) * x
factors of x³ = x * x * x = (x * x * x)
factors common to both are (x * x * x) Therefore GCF is x³

Norma has an A-frame cabin.The back is shown below. How many square feet of paint will she need to cover the back of the cabin?

Answers

I FOUND YOUR FULL QUESTION IN OTHER FUENETES.
 PLEASE SEE ATTACHED IMAGE. 
 For this case what you should do is find the area of the triangle which will be given by:
 A = (1/2) * (b) * (h)
 Where
 b: base
 h: height
 Substituting the values we have:
 A = (1/2) * (25 1/2) * (15)
 A = 191.25 feet ^ 2
 Answer:
 she will need 191.25 feet ^ 2 to cover the back of the cabin

Figure ABCD is rotated 90°counterclockwise about the origin. Which of the following gives the correct measure of an image of one of its sides?

B'C' = √17
C'D' = √10
D'D' = 5
A'B' = √17

Answers

the length  of a side is: A'B' = sqrt (17)


Math help.... Please....

This doesn't make any sense to me. Pls help me. I'm not begging, but this problem has been stumping me and I don't understand how to do it.... I'm using 99 points to give to a person who maybe can help me. I will give Brainliest if you are correct.

Thank you so very kindly.

When Julia dumped out the big jar of dimes and nickles she found 287 coins. If there was $20.50 in the jar, how many of each kind of coin was there??

Don't answer this unless you actually are answering the question!!! If you have any questions, or it doesn't make sense, please say something in the "Ask for Details" section.

Thanxs again!!!

Answers

First, you want to solve for the equation for this problem, would be: 
0.05N + 0.10D = 20.50 
While N = The amount of nickels, and D = The amount of dimes. 

Since N = 164, and D = 123. It would add up to 287 coins. 164 + 123 = 287. 
Now that you have the number for those two variables, solve the equation for when N = 164, and D = 123. 
0.05N + 0.10D = 20.50 
0.05(164) + 0.10(123) = 20.50 
8.2 + 12.3 = 20.50 
20.50 = 20.50 
So, there is 164 nickels, and 123 dimes for your answer. 

I hope this helps! 

~ Notorious Sovereign

Answer:First, you want to solve for the equation for this problem, would be: 

0.05N + 0.10D = 20.50 

While N = The amount of nickels, and D = The amount of dimes. 


Since N = 164, and D = 123. It would add up to 287 coins. 164 + 123 = 287. 

Now that you have the number for those two variables, solve the equation for when N = 164, and D = 123. 

0.05N + 0.10D = 20.50 

0.05(164) + 0.10(123) = 20.50 

8.2 + 12.3 = 20.50 

20.50 = 20.50 

So, there is 164 nickels, and 123 dimes for your answer. 


I hope this helps you


The area of a rectangular swimming pool is
10x2 – 19x – 15. The length of the pool is 5x + 3.
What is the width of the pool?

Answers

width 2x-5 hope this helped

32 deanna bought a shirt that was on sale for 40% off the original price. she also used a coupon that gave her an additional 20% off the sale price of the shirt. the original price of the shirt was $54. what is the new price of the shirt before tax?

Answers

40% + 20% = 60%

60% = 0.60

54 x 0.60 = 32.40

54 - 32.40 = 21.60

the price was $21.60

The birdwatching club has 27 members, 18 girls and 9 boys. What is the ratio of the girls to boys in the birdwatching club?

Answers

the ratio of the girls to boys in the bird-watching club is 18/9 = 2/1

answer
2/1

Can anyone please help

Answers

Hello,

9)
∠DBC=90-54=36°
∠CAD=∠DBC=36°

10)
∠BOC=1/2(360-2*100)=1/2*160=80°
∠l=1/2∠AOD=1/2∠BOC=40°

11)
JL=10
JA=7==>AL=10-7=3

LC=AL=3
LK=11
CK=11-3=8

KB=KC=8
BJ=JA=7

perimeter=10+11+15=36



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