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Finger [1]
3 years ago
9

The points (2,9) and (-4,-9) are on a straight line. Calculate the x and y intercepts.

Mathematics
1 answer:
luda_lava [24]3 years ago
4 0
Slope: (9+9)/(2+4) = 18/6 = 3
Y- intercept:
9 = 3(2) + b
9 = 6 + b
b = 3
X- intercept:
0 = 3x + 3
-3 = 3x
x = -1
x-intercept: (-1,0)
y-intercept: (0,-3)

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BEST ANSWER = BRAINLEIST ANSWER!
Alika [10]
2(j + 2 + j)

Twice the sum of 2 consecutive odd (or even) intergers.

or

3(2j + 9 + j)

Three times the sum of twice a number and 9 and a number


3 0
3 years ago
120 pianists compete in a piano competition. (a) In the first round, 30 of the 120 are selected to go on to the next round. How
MissTica

Answer:

Step-by-step explanation:

Given

There are 120 Pianist in a competition

(a)In first round 30 pianist is selected

this can be done in ^{120}C_{30} ways

=\frac{120!}{(120-30)!30!}

=\frac{120!}{90!30!}

(b)In the second round 5 pianist is selected out of 30

this can be doe by =\frac{30!}{(30-5)!5!}

=\frac{30!}{25!5!}

=142,506

8 0
3 years ago
25% of ……………….=50<br> does anyome know the answer please explain
Murrr4er [49]

Answer:

200

Step-by-step explanation:

25% of x = 50

25/100 × x = 50

x = 50 × 100/25

x = 50 × 4

= 200.

25% of <u>2</u><u>0</u><u>0</u><u> </u> = 50

6 0
1 year ago
Read 2 more answers
Halpppp plsssssss i need help
serg [7]
<h2>Question:</h2>

Write an expression that can be used to find the sum of the most common and least common lengths of alien fingers.

<h2>Answer:</h2>

5 + 1 = 6

<h2>Step-by-step explanation:</h2>

(MCL) Most Common Length = 5

(LCL) Least Common Length = 1

MCL + LCL =

  5   +   1   =  6

6 0
2 years ago
F(x) = — 3х2 – 6х +5 <br> maximum and minimum value
gregori [183]

9514 1404 393

Answer:

  maximum: 8; no minimum

Step-by-step explanation:

A graph can be useful. I find a graphing calculator handy. It shows the maximum of the function is f(-1) = 8. Since the parabola goes to -∞ for large values of x, there is no minimum.

  maximum: 8

__

You can also find the maximum by putting the function in vertex form.

  -3(x^2 +2x) +5 . . . . factor the leading coefficient from the x terms

 -3(x^2 +2x +1) +5 -(-3)(1) . . . . add the square of half the x-coefficient, subtract the equivalent amount

  -3(x +1)^2 +8 . . . . . . the vertex form of the expression for f(x)

This form is ...

  a(x -h)^2 +k . . . . . with a=-3, h=-1, k=8

so the vertex is (h, k) = (-1, 8) -- the same as shown on the graph. The negative value of 'a' tells you the parabola opens downward, so the vertex is the maximum. The maximum is 8 at x = -1.

5 0
3 years ago
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