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photoshop1234 [79]
3 years ago
5

Find an equation in slope-intercept form of the line that has slope –2 and passes through point a (1,9)​

Mathematics
2 answers:
user100 [1]3 years ago
8 0

Answer:

Step-by-step explanation:

y - 9 = -2(x - 1)

y - 9 = -2x + 2

y = -2x + 11

liberstina [14]3 years ago
7 0

Answer:

A

Step-by-step explanation:

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There are 40 people at Drake’s sweet sixteen party. Drake’s only rule is that everyone in the party must meet and shake each oth
Nonamiya [84]

Answer:

Given:

Total Number of people at the Drake’s sweet sixteen party = 40

Everyone in the party must meet and shake each other’s hand

1) How many handshakes are there altogether?

There was total of 780 handshakes in the party.

2. How did you get your solution:

If you have 7 people, person seven shakes six other hands, person  

six shakes five other hands, person five shakes fours other hands,  

person  ,four shakes three other hands, person three shakes two other hands,  and person two shakes one hand.  Another way to see it is,

Person 7  +person 6 + person 5 + person 4 +person 3 + person 2 +  person 1

= 6+5+ 4+3+2+1

=>21

so similairly in case of 40 persons

= 39+38+37+36+37+36+35+34 .................+3+2+1

=>780

3) What’s the quickest way to figure this out if Drake invited 1,000 people?

People at Party               Number of Handshakes

     2                                                     1

     3                              1 + 2              = 3

     4                            1 + 2 + 3          = 6

     5                          1 + 2 + 3 + 4      = 10

     6                        1 + 2 + 3 + 4 + 5  = 15

     .

     .

     .                                          

     n                              1 + 2 + ...+ (n-1) =  --------     \frac{n(n-1)}{2}

Hence for n persons the number of handshakes will be  \frac{n(n-1)}{2}

So for 1000 persons the number of handshakes will be

=>\frac{1000(1000-1)}{2}

=>\frac{1000(999)}{2}

=>\frac{999000}{2}

=>499,500

                                                     

3 0
2 years ago
More than half of the moon is visible from Earth; light appears to be increasing​
wlad13 [49]

Answer:

cool

Step-by-step explanation:

whats ur question about it?

8 0
3 years ago
Brandon bought Snacks for his teams practice he bought a bag popcorn for 211 and a six pack of juice bottles of total cost befor
yawa3891 [41]

Answer: 2.11X=11.41

X=9.3

or

211x=1141

930

Step-by-step explanation:

3 0
2 years ago
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89. If x, y, and z are numbers such that xy + xz = 100, what is the value of x/5 (3y + 3z) + 10?
Hunter-Best [27]
Hello,

xy+xz=100==>x(y+z)=100
x/5*(3y+3z)+10=3/5*(x(y+z))+10=3/5*100+10=70

Answer C
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3 years ago
Which expression is equivalent to 1 over 81
nadezda [96]
100 is equivalent to 1
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3 years ago
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