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almond37 [142]
3 years ago
6

I need help plz step by step explanation

Mathematics
2 answers:
Cloud [144]3 years ago
8 0
X 2 y7 hope it’s richer
Triss [41]3 years ago
4 0

Answer:

x=2,y=7

Step-by-step explanation:

Using elimination method:

Add both equations

8x=16

x=2

Put x=2 into equation 2

3•2+6y=48

6y=42

y=7

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What is addition number
Nimfa-mama [501]
Adding is where you added, or put something with, a number.
4 0
3 years ago
Read 2 more answers
NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ WILL REPORT FAKE ANSWERS
sammy [17]

Answer:

B

Step-by-step explanation:

6 0
3 years ago
Justine wants to go to the school dance next week, but only if her friend kelly goes. she asks her mom to go, saying she will co
mr Goodwill [35]

Justine only goes when her friend goes [Conditional probability].

Mom going to PROM and Justine going to PROM are separate events. [Independent events].

Mom can't go until she finishes the housework is dependent on events

independent events. [Dependent events]

<h3>What is probability?</h3>

The probability exists in the analysis of the possibilities of happening of a result, which exists acquired by the ratio between favorable cases and possible cases.

Conditional probability directs to the possibility that some outcome happens given that another possibility contains also occurred.

Justine only goes when her friend goes [Conditional probability]

Independent events exist as those possibilities whose occurrence exists not dependent on any other event.

Mom going to PROM and Justine going to PROM are separate events. [Independent events]

Dependent events exist that depend upon what occurred before.

Mom can't go until she finishes the housework is dependent on events

independent events. [Dependent events]

To learn more about probability refer to:

brainly.com/question/13604758

#SPJ4

3 0
1 year ago
Tough one!
frosja888 [35]
Imx->0 (asin2x + b log(cosx))/x4 = 1/2 [0/0 form] ,applying L'Hospital rule ,we get

= > limx->0 (2a*sinx*cosx - (b /cosx)*sinx)/ 4x3 = 1/2 => limx->0 (a*sin2x - b*tanx)/ 4x3 = 1/2 [0/0 form],

applying L'Hospital rule again ,we get,

 = > limx->0 (2a*cos2x - b*sec2x) / 12x2 = 1/2

For above limit to exist,Numerator must be zero so that we get [0/0 form] & we can further proceed.

Hence 2a - b =0 => 2a = b ------(A)

limx->0 (b*cos2x - b*sec2x) / 12x2 = 1/2 [0/0 form], applying L'Hospital rule again ,we get,

= > limx->0 b*(-2sin2x - 2secx*secx.tanx) / 24x = 1/2 => limx->0 2b*[-sin2x - (1+tan2x)tanx] / 24x = 1/2

[0/0 form], applying L'Hospital rule again ,we get,

limx->0 2b*[-2cos2x - (sec2x+3tan2x*sec2x)] / 24 = 1/2 = > 2b[-2 -1] / 24 = 1/2 => -6b/24 = 1/2 => b = -2

from (A), we have , 2a = b => 2a = -2 => a = -1

Hence a =-1 & b = -2
7 0
3 years ago
A parabola has x-axis intercepts 6 and -3, and passes through the point (1,10). Find the equation of the parabola.
ale4655 [162]

Answer:

y=-1/2 x^2+3/2 x+9

Step-by-step explanation:

The equation of parabola is:

y=ax^2+bx+c

We know that parabola has three poibts

(6,0),(-3,0) and (1,10).

So we put these three points in equation:

a*36+b*6+c=0......(1)

a*9-3b+c=0........(2)

a+b+c=10........(3)

(1)-(2) we have:

27a+9b=0.....(4)

(2)-(3) we have:

8a-4b=-10.....(5)

4(4)+9(5) we got:

180a=-90

a=-1/2

From (4) we got: b=27/18=3/2

From (3) we got: c=10+1/2-3/2=9

So equation is:

y=-1/2 x^2+3/2 x+9

You can see the picture of parabola through three points.

8 0
3 years ago
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