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Mekhanik [1.2K]
3 years ago
6

Will give brainliest!

Mathematics
2 answers:
Savatey [412]3 years ago
6 0
2x+y=12
y=-2x+12. As a result, y=-6-x is your answer. Hope it help!
aalyn [17]3 years ago
3 0
Y=-6-x is not equal to 2x+y=12. Both sides were not divided by two when it was simplified.
You might be interested in
A square wall is covered with sqare tiles. There are 85 tiles altogether along the two diagonals. How many tiles are there on th
olchik [2.2K]

Answer:

There are 1849 tiles on the whole wall.

Step-by-step explanation:

If there are 85 tiles along the two diagonals, we can use the following rule:

\frac{85+1}{2}=43

So we have 43 tiles in the first diagonal and 85-43 = 42 in the second diagonal.

Now, as we have a square the side will have 43 tiles so the total area will be cover with:

A=43*43=1849

Therefore, there are 1849 tiles on the whole wall.

I hope it helps you!                              

4 0
3 years ago
I’ll give u a kiss if u help me with this ASAP PLZZZZ with an explanation ;)
olganol [36]

Answer:

<em>The answer is 0</em>

<em>So I think no solutions</em>

Step-by-step explanation:

You gotta get each equation into slope-intercept form, nd when u do that 9x - 3y = 6 turns into y = 3x - 2, nd 5y = 15x + 10 turns into y = 3x + 2. Add the equations together, nd get 0.

6 0
3 years ago
Read 2 more answers
A past study claims that adults in America spend an average of 17 hours a week on leisure activities. A researcher wanted to tes
8090 [49]

Answer:

The claim is false.

Step-by-step explanation:

Given the data :

13 24 21 37 15 25 18 22 40 32

The sample mean and standard deviation can ben calculated for the given sample.

Using calculator :

Sample mean, xbar = 24.7

Sample standard deviation, s = 9.04

Sample size, n = 10

The hypothesis :

H0 : μ = 17

H1 : μ ≠ 17

The test statistic :

(xbar - μ) ÷ (s/√(n))

(24.7 - 17) ÷ (9.04/√(10))

7.7 / 2.8586990

Test statistic = 2.694

We can obtain the Pvalue, at α = 0.05 ; df = n-1 = 9

Pvalue = 0.0246

Since Pvalue < α ; we reject the null ; Hence, there is significant evidence to conclude that an adult American does not spend average of 17 hours in leisure

5 0
2 years ago
What is f[g(3)] for the following function? <br> f(x) = 4x2 − 3<br><br> g(x) = 5x − 2
lukranit [14]

Answer:

673

Explanation:

  • f(x) = 4(x)² − 3
  • g(x) = 5(x) − 2

solve:

  • f[g(3)]
  • f(5(3) − 2)
  • f(13)
  • 4(13)² − 3
  • 673
8 0
2 years ago
Read 2 more answers
HELP!! WITH THESES MATH QUESTION! WILL MARK BRAINLIEST 70 POINTS!!! PLEASE HELP
Cloud [144]

1. Let hardcover books = X

Paperback books would be 4x -3 ( 3 less than 4 times)

Now you have:

X + 4x-3 = 447

Simplify:

5x - 3 = 447

Add 3 to each side:

5x = 450

Divide both sides by 5:

x = 450/5

x = 90

He has 90 hardcover books.

2. 300 miles / 25 miles per gallon = 12 gallons of gas.

12 gallons x $$ per gallon = $48 dollars

3. Subtract base pay from total:

1916 - 800 = 1,116 worth of commissions.

Divide commissions by percentage:

1116 / 0.09 = $12,400 total sales.

4.

Find the median of the heights: 65-50 = 15. 15/2 = 7.5

Median = 50+7.5 = 57.5

The equation would be |h-57.5| < 7.5

6 0
2 years ago
Read 2 more answers
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