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alexira [117]
3 years ago
9

PLS SOMEONE LOOK AT THE PHOTO I POSTED AND ANSWER AS SOON AS POSSIBLE PLS ITS ASKING FOR X= AND Y= NOT AN EQUATION JUST PLS ANSW

ER IT RIGHT

Mathematics
1 answer:
34kurt3 years ago
8 0

We can solve it, but we can't actually use the interactive system they want you to use.  Let's see if we can guide you through it.

My guess is you can control the lines by dragging the two points on the line.

Let's make the green line y = 2x + 3

When x=0 we get y=3, point (0,3).   That's the y intercept, 3 up on the y axis.  Drag one green point there.

When x=2 we get y=7, point (2,7), two to the right, seven  up.  Drag the other green point there.   The green line is now y = 2x + 3.

Similarly the red line is made y = -3x + 3.    When x=0, y=3, point (0,3).  [Surprise!]   When x=2, y=-3, point (2,-3).  Drag the red points to (0,3) and (2,-3).

We already saw where they meet, at (0,3), x=0, y=3, the y intercept of both lines.

Answer: x=0, y=3

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The point p (3,4) is the midpoint of the join of A (7,8) and B find tge coordinates of B
Shalnov [3]

Answer:

B(-1, 0)

Step-by-step explanation:

coordinates of midpoint p(x,y) are calculated as

x= \frac{x_1+x_2}{2}  ---------- (1)

y= \frac{y_1+ y_2}{2}  -----------(2)

Here (x_1, y_1) = (7, 8) and (x_2, y_2) \ is \ unkwon

<u>Using equation (1)</u>

<u />3=\frac{7+x_2}{2} \\x_2=-1<u />

<u>Using equation (2)</u>

<u />4=\frac{8+y_2}{2} \\y_2=0<u />

3 0
3 years ago
A family wants to save for college tuition for their daughter. What continuous yearly interest rate r% is needed in their saving
sergey [27]

Answer:

The continuous yearly interest is  22.5% per year.

Step-by-step explanation:

Continuous yearly interest:

Continuous yearly interest is defined as the sum of the interest comes from principle and the interest comes from interest.

The formula for continuous interest yearly is

A=Pe^{rt}

where A = The final amount =$110,000

P= principle =$4,700

r= rate of interest

t= time (in year)= 14 years

\therefore 110,000= 4,700e^{r\times 14}

\Rightarrow e^{14r}= \frac{110,000}{4,700}

Taking ln both sides

\Rightarrow ln e^{14r}= ln(\frac{110,000}{4,700})

\Rightarrow {14r}= ln(\frac{1100}{47})

\Rightarrow r=\frac{ln( \frac{1100}{47})}{14}

\Rightarrow r = 0.225  (approx)

The continuous yearly interest is 0.225 = 22.5% per year.

4 0
3 years ago
The manufacturer of a certain brand of aluminum foil claims that the amount of foil on each roll follows a Normal distribution w
natali 33 [55]

Answer: 0.4207

Step-by-step explanation:

Let \overline{x} be the sample mean area.

Given: Population mean : \mu=250 sq. feet

Standard deviation: \sigma=2 sq. feet

Sample size : n= 10

The probability that the sample mean area is 249.6 \text{ ft}^2 or less if the manufacturer’s claim is true.

P(\overline{x}

Required probability = 0.4207

5 0
3 years ago
HELP PLEASEEEEE THIS WAS DUE 17 DAYS AGO!!!!
Blizzard [7]

Answer:

x= 2, y= 1

Step-by-step explanation:

x= 2y

2x +5y =9

substitute x

2 *2y +5y = 9

4y +5y = 9

9y = 9

y =1

x= 2*y = 2*1= 2

7 0
2 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS!
coldgirl [10]

Answer:

EBC and ABE, as well as ABD and ABE

Step-by-step explanation:

Supplementary angles form an 180 degree angle. In other words, they form a straight line.

EBA and DBC are each greater than 90 degrees and are vertical angles, not supplementary angles.

EBC and ABE form a straight line. So they are supplementary angles.

ABD  and ABE form a straight line. So  they are also supplementary angles.

CBE and ABD are each less than 90 degrees and are vertical angles, not supplementary angles.

So, EBC and ABE, as well as ABD and ABE are the correct choices.

8 0
3 years ago
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