Mathematics High School

2x - 2y = -6,
2x + y = 9

Solve for the system of solutions and find the value of X and Y

x =

y =

Answers

Answer 1

Answer:

y=3 and x= 9/2

Step-by-step explanation:

Answer 2

Answer:

x=7

y=-5

Step-by-step explanation:

ive tryed the elimination way

(2x-2y=-6)-

(2x+y=9)

=-3y=-15

y=-5

2x+-5=9

2x=9-(-5)

2x=14

x=7

how abt that

Related Questions

Find the measure of ∠ J. (Hint: You must find the value of x first)

Answers

Answer:

35°

Step-by-step explanation:

set it equal to 180 because the total sum of the interior angles of a triangle is equal to 180

x+x-15+95=180

2x+80=180

2x=100

x=50

now plug it in

50 - 15 = 35

answer

35°

Step-by-step explanation:

set it equal to 180 because the total sum of the interior angles of a triangle is equal to 180

x+x-15+95=180

2x+80=180

2x=100

x=50

now plug it in

50 - 15 = 35

what is the measure of angle 1?

Answers

Since there was a ray drawn from A through C the exterior angle of angle C is angle 1. Any straight line should equal to 180 degrees.

Answer:

option a. 90°

angle 1=90°

hi please help i’ll give brainliest

Answers

Answer:

The answer is B

Step-by-step explanation:

IT SHOWS THAT A SOLAR ECLIPSE OCCURS WHEN THE MOON CASTS A SHADOW OVER EARTH.

Raquel’s favorite basketball player scored 25, 17, 38, 11, and 24 points during her games.

What is the mean number of points the player scored?

Answers

Answer:

23 points

Step-by-step explanation:

mean is 23

( ‘mean’ means the average)

add all the numbers together and divide by how many numbers are there.

25+17+38+11+24=115
115/5=23

EASY 10 POINTS AND BRAINLEIST

Write an inequality that represents this situation below. Be sure to define your variable in words.

The high school softball team needs to buy T-shirts for their games. The T-shirts cost $8 a piece and they only have $100 to spend.

Answers

Answer:

100-(8 times y)

Step-by-step explanation:

The high school softball team needs to buy T-shirts for their games. The T-shirts cost $8 a piece and they only have $100 to spend.

8 a peice

This means that the money costs 8$ for each of the players. We don't know how many players there are, so we will just label the amount of players as "y"

And we will multiply 8 times y to get our answer

And then we will subtract THAT answer minus 100 to get our full answer.

Hope this helps!

Have a great day!

Find the midpoint of the segment with the following endpoints.
(−9,2) and (−5,−6)

Answers

Answer:

(-7, -2)

Step-by-step explanation:

1. NASA has computer scientists and engineers working on-site for their programs every
day. On the day described, find how many scientists were working and how many engineers
were working.
---
A.
One day there were 11 total engineers and scientists working. Write an
equation that represents this relationship.
B.
Each engineer is paid $144 per day and each scientist is paid $66 per day. On
the same day as in part A, earnings for scientists and engineers totaled
$1038. Write an equation that represents this relationship.

Answers

Answer:

Step-by-step explanation:

Ok there are some working areas here that I am working out but I do know that if you break down the total amount paid out to the scientists and engineers, there would be 7 scientists and 4 engineers

$1038 so if you take $66 multiplied by 7 you get $462. Multiply $144 by the remaining 4 and you get $576. The total will equal $1038. This should all help you put together the right equation because the answers are correct.

I hope this helps!!!

what expression is equivalent to (3^2)^-2

Answers

Answer:

1/81

Step-by-step explanation:

You just tap the calculator

Answer: 1/81

- First you simplify it to 3^-4

- Then express it with a positive exponent which goes to 1/3^4

- Then evaluate it to 1/81

hope this helps! :)

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Answers

I) what percentage of students finished the race in less than 12 seconds:

number of students who finished before 12 seconds= 16

total number of students= 20

% = (16×100)20 = 80%

ii) B.3

Answer:

number 5 is D

and number 6 is C

Tatum walks her dog 2/3 mile every day after school. How many miles does she walk her dog in 5 days

Answers

The answer should be b!

The number of miles that Tatutm walk her dog in 5 days is given by: Option B: 10/3 (in miles)

How to add two fractions?

Let we have to add two fractions as:

[tex]\dfrac{a_1}{b_1} + \dfrac{a_2}{b_2}[/tex]

Then we will find Lowest Common Multiple (LCM) of [tex]b_1[/tex] and  [tex]b_2[/tex]. That will help to make the denominators same.

Once the denominators become same, the numerators can add up directly, giving us the final result of addition.

For this case, we're given that:

Each day, Tatum walks her dog 2/3 miles

For 5 days, the total distance her dog walked = 2/3 + 2/3 + 2/3 + 2/3 + 2/3

Since denominators are same, thus:

[tex]\dfrac{2}{3} + \dfrac{2}{3} + \dfrac{2}{3} + \dfrac{2}{3} + \dfrac{2}{3} = \dfrac{2+2+2+2+2}{3} = \dfrac{10}{3}[/tex]

We could've easily done it as: 2/3 + 2/3 + 2/3 + 2/3 + 2/3 = 5 times 2/3 = [tex]5 \times \dfrac{2}{3} = \dfrac{5 \times 2}{3} = \dfrac{10}{3}[/tex]

Thus, the number of miles that Tatutm walk her dog in 5 days is given by: Option B: 10/3 (in miles)

Learn more about fraction addition here:

https://brainly.com/question/17544795

Abdul rented a truck for one day. There was a base fee of $19.99, and there was an additional charge of 76 cents for each mile driven. Abdul had to pay
$181.87 when he returned the truck. For how many miles did he drive the truck?
miles
х
?

Answers

Answer:

The truck drove 213 miles.

Step-by-step explanation:

181.87-19.99= 161.88

161.88÷0.76= 213

What is the value of v? Help, please

Answers

Answer:

v = 87

Step-by-step explanation:

the angle v+39 lies on a straight line. so substract v+39 from 180 to get the interior angle for that side.

afterwards, knowing that the sum of interior angles of a triangle = 180, form an equation with all the angles and solve for v

9(2b - 6)
Help I tried 6 times...​

Answers

Use distributive property.

18b-54

Simplify: 6^6/6^−3 Leave your answer in exponential form

Answers

Answer:

6⁹

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Exponential Rule [Multiplying]:                                                                        [tex]\displaystyle b^m \cdot b^n = b^{m + n}[/tex]Exponential Rule [Dividing]:                                                                             [tex]\displaystyle \frac{b^m}{b^n} = b^{m - n}[/tex]

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle \frac{6^6}{6^{-3}}[/tex]

Step 2: Simplify

Exponential Rule [Dividing]:                                                                              [tex]\displaystyle 6^{6 - -3}[/tex]Rewrite:                                                                                                             [tex]\displaystyle 6^{6 + 3}[/tex]Add:                                                                                                                   [tex]\displaystyle 6^{9}[/tex]

H E L P
what is the slope??

Answers

1/3 is the slope
X= 12-6=6
Y= 4-2=2
I got the slope 1/3 I used the points (6,2), (12.4)

For what value(s) of w does the equation 7 + 3x - 1 = w(x + 2) have infinitely many solutions?

Answers

Answer:

w=3

Step-by-step explanation:

7 + 3x - 1 = w(x + 2)

Solve for w

Distribute

7 + 3x - 1 = wx + 2w

Combine like terms

3x+6 = wx+2w

For this to have infinite terms

3x = wx   and 6 = 2w

3x = wx

Divide by x

3 =w  

and 6 = 2w

Divide by 2

6/2 = 2w/2

3 =w

When w = 3, there will be infinitely many solutions

Please answer correctly! I will Mark you Brainliest!

Answers

Answer:

the height is 9

Explanation:

8 × 10 = 80

720 ÷ 80 = 9

Se sabe que el virus SARS-CoV-2 es de forma aproximadamente esférica cuyo diámetro del virus se ha encontrado para colocar entre 50 nanómetro a 140 nanómetro. Halle la dimensión para dicho volumen a) L2T b) L3 c) L4 d) ML3

Answers

Answer:

L³

Step-by-step explanation:

De la pregunta anterior se nos dice que el diámetro del virus esférico

= 50 - 140 millas náuticas

Radio = 50 - 140 nm / 2

= 25 - 70 millas náuticas

El volumen de una esfera es

= 4/3 πr³

Usando el análisis dimensional

4/3 = constante

π = constante

[r] = Dimensión de longitud = L

Por lo tanto, la dimensión del volumen de la esfera = L³

0.4 repeating as a fraction for a mixed number

Answers

Answer:

Step-by-step explanation:

1.Rewrite the decimal number as a fraction with 1 in the denominator

2.Multiply to remove 1 decimal places. Here, you multiply top and bottom by 101 = 10

3.Find the Greatest Common Factor (GCF) of 4 and 10, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 2,

so the answer is

0.4= 2/5

The distance between A (-4, 2) and B(4, 2) is.

Answers

Step-by-step explanation:

the answer is 8 units

I remember I had this

Eli has 8 black pens and 5 blue pens in his desk drawer. he also has 3 yellow highlighters, 4 green highlighters, and 5 pink highlighters in his pencil case. If he chooses one pen and one highlighter without looking, what is the probability that he will get a blue pen and he will not get a yellow highlighter. Brainliest for most helpful answer.
I will ban you if you use bit. ly

Answers

The answer is 15/52


Which of the following inequalities is true?
​

Answers

Your answer would have to be c
E is the correct statement because 12 is greater than 5

I did not pay attention to the class- so can someone explain how to do dis type of problem- and the answers-

Answers

which questions ..??????

Z-5.7=-5.4
I can’t figure this one out?

Answers

Z=0.3
Just add 5.7 to both sides

Point E is located at coordinates (-7, -5). Point F is located at coordinates (-2, 7). What
is the length of EF?

Answers

Answer:

It’s 17 units

Step-by-step explanation:

I just did it

Answer:

17

Step-by-step explanation:

i took it

SOMEONE HELP please!!!! *ill mark brainliest

Answers

Answer:

-12 degrees

Step-by-step explanation:

the graph

30 degrees hope it helps

Norachai invests $3,183 in a retirement
account with a fixed annual interest rate of
2% compounded 6 times per year. What
will the account balance be after 18 years?

Answers

Answer: HE should enter lottery

Step-by-step explanation:

Evaluate 6h when h =8

Answers

I thin is 16
Because h converts in 8, so you multiply
Hope that helps:)

Hey can you help me fast!!!

Answers

Answer: -15 + 42

Step-by-step explanation:

Given that the measurement is in centimeters, find the circumference to the nearest tenth.
A: 28.3cm
B:56.5cm
C:63.6cm
D:254.3cm

Answers

It’s B. Hope that helps you!
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