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3 years ago

I NEED THIS ASAP I'LL GIVE BRAINLIEST

Mathematics

2 answers:

Dimas [21]3 years ago

8 0

The answer is : C. 2

Lyrx [107]3 years ago

4 0

Answer:

C.)

Step-by-step explanation:

4x -20x -5b -x +2=-17x -8

-17x-5b+2=- 17x-8

+17x +17x

-5b +2= -8

-2 -2

-5b = -10

b= 2

hope this helps.

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Find the length of WY

DENIUS [597]

Answer:

WY = 180

Step-by-step explanation:

the diagonals of an isosceles trapezoid are congruent , so

ZX = WY , that is

8y - 4 = 7y + 19 ( subtract 7y from both sides )

y - 4 = 19 ( add 4 to both sides )

y = 23

Then

WY = 7y + 19 = 7(23) + 19 = 161 + 19 = 180

4 0

2 years ago

PLEASE HELP!!

viktelen [127]

Answer:

C. The principal randomly selects homeroom classes and surveys each student in the chosen classes.

Step-by-step explanation:

Middle school is 6-8th. Surveying only the eighth-grade students won't give a representative sample of the whole school only the eighth-graders. Option A is incorrect.

Surveying only the students in detention represents a very small amount of students compared to the school, therefore it is not a representative sample. Option B is incorrect.

Yet again, the students in the math club is a small amount of students compared to the school. It does not represent the entire, or majority of the population. Option D is incorrect.

Picking students from homeroom classes and surveying each will give a wider variation of opinions from each grade and therefore a representative sample. Option C is the correct answer.

4 0

2 years ago

Write the equation of the line through (−2, −1) and perpendicular to 2y=3x−5.

oksano4ka [1.4K]

Y=-1

Move all terms containing x to the left side of the equation.

Subtract 3x from both sides of the equation.
2x-3x=−5

Subtract 3x from 2x

−x=-5

Multiply each term in -x=−5 by −1

Multiply each term in −x=−5 by −1

(-x) ⋅ -1=(-5) ⋅-1

X=(-5) ⋅-1

multiple -5 by -1

X=5

Since x=5 is a vertical line, the slope is undefined.
Undefined

The equation of a perpendicular line to
x=5 must have a slope that is the negative reciprocal of the original slope.

M perpendicular = -1/∞
The negative reciprocal of ∞ is 0

M perpendicular is 0

Since the slope for the perpendicular line is 0 ,the line is perpendicular to the y-axis. The equation of this line is of the form
y=c when c is any real number. The equation of the line at point (-2 ,1)

Y=-1

I hope you understand this

5 0

2 years ago

Read 2 more answers

2. A golfer will play two holes of a course. Suppose that on each hole the player will score 3, 4, 5, 6, or 7, with these five s

pshichka [43]

Answer:

The probability that the player’s total score for the two holes will be 14 is 0.04

The probability that the player’s total score for the two holes will be 12 is 0.12

Step-by-step explanation:

Consider the provided information.

Each hole the player will score 3, 4, 5, 6, or 7, with these five scores being equally likely.

A) 14

It is given that the player’s total score for the two holes will be 14.

There is only one possible case to get a total score of 14.

If the player scores 7 on each hole, which is P(7)× P(7).

$P(7) = \frac{1}{5}$

Thus, the required probability is:

$P(Total:14)=P(7)\times P(7)$

$P(Total:14)=\frac{1}{5}\times \frac{1}{5}=0.04$

Hence, the probability that the player’s total score for the two holes will be 14 is 0.04

B) 12

It is given that the player’s total score for the two holes will be 12.

There are three ways to have a total score of 12.

7+5 = 12, 6+6 = 12, 5+7 = 12

$P(5)=P(6)=P(7)=\frac{1}{2}$

Thus, the required probability is:

$P(Total:12)=P(7)\times P(5)+P(6)\times P(6)+P(5)\times P(7)$

$P(Total:12)=\frac{1}{5}\times \frac{1}{5}+\frac{1}{5}\times \frac{1}{5}+\frac{1}{5}\times \frac{1}{5}=0.12$

Hence, the probability that the player’s total score for the two holes will be 12 is 0.12

6 0

3 years ago

Which is the graph of f(x) = x- - 2x + 3?

matrenka [14]

Answer:

irst, solve for two points which solve the equation and plot these points:

First Point: For

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−

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−

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)

−

(

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Second Point: For

−

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−

)

(

−

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−

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−

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−

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−

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We can next plot the two points on the coordinate plane:

graph{(x^2+(y+3)^2-0.035)((x+2)^2+(y-1)^2-0.035)=0 [-10, 10, -5, 5]}

Now, we can draw a straight line through the two points to graph the line:

graph{(y + 2x + 3)(x^2+(y+3)^2-0.035)((x+2)^2+(y-1)^2-0.035)=0 [-10, 10, -5, 5]}

Step-by-step explanation:

4 0

3 years ago