All categories

3 years ago

Please Help FAST! SOLVE EACH! Can I get step by steps also so I can understand thx I’ll mark brainlist also!!!

Mathematics

1 answer:

professor190 [17]3 years ago

7 0

X-6y=6 slope: 1/6 y-intercept (0,1)

X= 0,6 y= -1, 0
X+3y+12=0 slope: 1/3
Y-intercept (0,4) x= -12, 0 Y= 0,4
8a-9b= 9/8 slope (0 ,7/8) x= -1,1 Y= -1/4,2
3a+b=7 1/3 (0,7/3) x= 4,7 Y=1,0

You might be interested in

Is this Statement true or false?

nikitadnepr [17]

Answer:

True

Step-by-step explanation:

Yes, this is True because dotted lines are not part of the solution on a graph.

Sorry! Can't be explained more than this!

3 0

3 years ago

Read 2 more answers

Statistics??? Construct a 95% confidence interval for the population mean. Assume the population has a normal distribution. A sa

antiseptic1488 [7]

Given:
μ = $3120, population mean
σ = $677, population standard deviation.
The population is normally distributed.
n = 20, sample size.

At the 95% confidence level, the confidence interval is
$( \mu - 1.96\frac{\sigma}{ \sqrt{n} } ,\, \mu + 1.96\frac{\sigma}{ \sqrt{n} })$

1.96(σ/√n) = 1.96(677/√20) = 296.71
Th confidence interval for the mean is
($2823.29, $3416.71)

Answer: ($2823.29, $3416.71)

6 0

3 years ago

Select the image that is NOT a polyhedron.<br> B<br> С<br> D

Pie

Answer:

The answer is C the cylinder is not a polyhedron

8 0

2 years ago

In a concert hall, 250 seats out of 300 seats were occupied. To the nearest thousandth, what part of the hall was not occupied?

AlekseyPX

Answer:

250/300 = 0.833 = 83.3%

Step-by-step explanation:

50 seats weren’t occupied so roughly 80% of the seats are occupied

6 0

3 years ago

Anwar selects a playing card at random from the following 666 cards:

dalvyx [7]

Answer:

We have 6 cards.

9 of hearts

5 of spades

6 of hearts

2 of spades

4 of hearts

7 of hearts.

A is the event where Anwar selects an even numbered card.

B is the event where she choses a heart.

we have 3 even cards (and two of them are hearts)

we have 4 hearts (2 of them are even)

The probability of event A is Pa = 3/6 = 1/2

the probability of event B is = Pb = 4/6 = 2/3

The probability of event A and Event B is the number of heart cards with even numbers, that are 2 divided the total number of cards:

Paandb = 2/6 = 1/3

the probabilty of A if we know that B is true:

P(AIB) = 2/4 = 1/2 (this is because we have 4 hearts, and we know that 2 of those 4 cards are even)

the probability of B if we know that A is true:

P(BIA) = 2/3 (this is because we have 3 even cards, and 2 of them are hearts)

3 0

3 years ago