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3 years ago

Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.

Mathematics

1 answer:

Bas_tet [7]3 years ago

8 0

Perpendicular line: y = 2x+4
parallel line: y = -2x+3 (or any number different from 4)
neither: y= -4x+-3

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If A = (1,2,3,4,5), then the number of proper subsets of A is-

Mandarinka [93]

Answer: One of them is the set {1,2,3,4,5,6}itself; one is the empty set, containing no elements. “Proper subset of a set ” usually denotes a subset in which at least one element of the original set is missing; so one of the subsets - the original set iitself - is not a proper subset. Therefore the answer is 63.

Step-by-step explanation:

8 0

3 years ago

Patty has 8 flowerpots, and she wants to plant a different type of flower in each pot. There are 11 types of flower available at

Dominik [7]

The combination formula is given by

C(n, r) = $\frac{n!}{(n-r)!r!}$

C(11, 8) = $\frac{11!}{(11-8)!8!}$

C(11, 8) = 165

So, there are 165 ways of choosing 8 flowers out of 11 flowers

7 0

3 years ago

Math homework pls help

ivann1987 [24]

Answer:

I believe it is A. Since the p-value is less than the significance level, you must reject the null hypothesis.

Step-by-step explanation:

3 0

3 years ago

6. AB has coordinates A(-5,9) and B(7,-7). Points P, Q, and T are collinear

MrRissso [65]

Answer:

C) QT

Step-by-step explanation:

We must first find the coordinates of C(x,y) which divides AB in the ration m:n=3:2.

We use the formula

$x=\frac{mx_2+nx_1}{m+n}$

and

$y=\frac{my_2+ny_1}{m+n}$

We plug in the coordinates of A(-5,9) and B(7,-7) and m=3, n=2 to get:

$x=\frac{3*7+2*-5}{3+2}$

$x=\frac{21-10}{5}$

$x=\frac{11}{5}$

and

$y=\frac{3*-7+2*9}{3+2}$

$y=\frac{-21+18}{5}$

$y=-\frac{3}{5}$

C has coordinates $(\frac{11}{5},-\frac{3}{5})$

The line segment that contains C is $QT$

See attachment.

6 0

3 years ago

plz help me now plz: A cable 65 meters long is cut into two pieces so that one piece is 18 meters longer than the other. Find th

GalinKa [24]

Answer:

One piece is 23.5

the other is 41.5

Step-by-step explanation:

first subtract 18 from 65 that will give you 47. Then 47÷2= 23.5. this is the length of the shorter piece. since one piece is 18 m longer then the other, add 18 to 23.5. that will give you the length of the longer piece. You can check your work by adding 23.5 and 41.5. They equal 65.

6 0

3 years ago