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4 years ago

HELP PLEASE 20 POINTS TO BEST ANSWER!!!!!! ASAP!!!!!!!

Mathematics

2 answers:

kobusy [5.1K]4 years ago

6 0

Compose the result function for y=2x - 7 by replacing function designators with the actual function y= 2x - 7

spin [16.1K]4 years ago

4 0

Y = 2x - 7...the slope here is 2. A parallel line will have the same slope and a perpendicular line will have a negative reciprocal slope.

parallel line....
In y = mx + b form, the m is ur slope and the b is ur y int. A parallel line will have the same slope but will have a different y int. So one parallel line could be : y = 2x + 7.....or y = 2x - 4....that last number can be anything else but -7.

perpendicular...
perpendicular lines have negative reciprocal slopes. To find the negative reciprocal of a number, just flip the slope and change the sign. So the negative reciprocal of 2 (or 2/1) is - 1/2....see how I flipped the slope and changed the sign. So our perpendicular line will have a slope of -1/2. So one perpendicular line could be : y = -1/2x + 5...or y = -1/2x - 2.....doesn't really matter what the last number is, just as long as ur slope is -1/2.

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A car traveled 187 miles in 4 hours and 16 minutes. What was the average speed of the car in miles per

Bas_tet [7]

Answer:

43.83mph

step-by-step-explanation

4 0

3 years ago

All of the students of Music High School are in the band, the orchestra, or both. 80 percent of the students are in only one gro

il63 [147K]

Answer:

Option B.

Step-by-step explanation:

It is given that all of the students of Music High School are in the band, the orchestra, or both.

Students only one group = 80%

Students in both groups = 100%-80% = 20%

Students in band only = 50%

Students in band = Students in band only + Students in both groups

= 50% + 20% = 70%

Students in orchestra only = 100% - 70% = 30%

There are 119 students in the band.

Let total number of student be x.

$70\% of x=119$

$\dfrac{70}{100}x=119$

$0.7x=119$

$x=170$

Total number of students is 170.

We know that 30% of all students are in orchestra only.

$170\times \dfrac{30}{100}=51$

Therefore, the correct option is B.

5 0

4 years ago

CAN SOMEONE PLEASE ANSWER THIS QUESTION I AM HORRIBLE AT MATH WILL MARK BRAINLIEST ONLY IF CORRECT.

skelet666 [1.2K]

For this case, the first thing you should keep in mind is:
The solution of the inequation system is given by the shaded region.
Each inequality is met to the right of each graph.
We have then:

For inequation 1:
(2, 6)
(1, -3)
(-2, 5)

For inequation 2:
(2, 6)
(-1,-1)
(-3. 4)
(1, -3)

For the system:
(2, 6)
(1, -3)

6 0

4 years ago

A company orders supplies from M distributors and wishes to place n orders (n < M). Assume that the company places the orders

harkovskaia [24]

Answer:

a) 0.06048 b) 0.001344 c) 0.000294

Step-by-step explanation:

number of distributors = 10;

number of orders = 7

There are 10 distributors for each order, so the no. of ways the 7 orders could be placed are = 10⁷ =10000000

no. of ways that orders goes to different distributors = ¹⁰C₇*7! = 604800

Probability = 604800/10000000 = 0.06048

number of ways distributor 1 gets exactly 2 and distributor 2 gets exactly 3 orders = ⁷C₂*⁵C₃*8² = 13440

probability = 13440/10000000 = 0.001344

number of ways distributor 1, 2,3 get exactly 2,3 and 1 order(s) = ⁷C₂*⁵C₃*²C₁*7¹ = 2940

probability = 2940/10000000 = 0.000294

3 0

4 years ago

Kelvin says that 22/30 is greater than 22/32 do you agree ? explain

kozerog [31]

When two fractions have the same numerators, the one with the smaller denominator is the greater fraction.

$30 < 32 \Rightarrow \frac{22}{30} > \frac{22}{32}$

So Kelvin is right.

8 0

4 years ago

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