Mathematics College

pleaseeeee help (15 points) ​

Pleaseeeee Help (15 Points)

Answers

Answer 1

Answer:

Step-by-step explanation:

what are the vocabulary words that u are supposed to use?

Related Questions

(a) has no solutions.

(b) has infinitely many solutions.

(c) has exactly one solution.

Answers

Answer and Step-by-step explanation:

Given

ax + by = c

qx + ry = s

(a) the equation has no solutions if a/q = b/r ≠ c/s, when this happens, we say the system of equations has no solution. For example

x + y = 3

x + y = 5

Subtracting first equation from the second we have:

0 = 2 which is impossible.

(b) the equations have infinite solutions if a/q = b/r = c/s, for example

x + y = 2

x + y = 2

Subtracting the first equation from the second we have

0 = 0, since this is always true, then it has infinite solutions.

(c) the equations have unique solutions if a/q ≠ b/r, for example

x + y = 2

x – y = 1

Adding the first and second equation we have

2x = 3, we can get x from here and definitely y, so we have just one solution.

Can someone tell me the answers ?

Answers

Answer: The first one is nonlinear, the second is nonlinear, and the third is linear.

Step-by-step explanation: The first one is nonlinear because when you calculate slope you get different numbers.

7-4/2-1 = 3/1= 3

4-3/1-0= 1/1= 1

Also when you graph it, it does not become a line. I can attach an image for evidence (Credits to other person who answered and commented on my answer thanks for finding my mistake.)

The second one has an exponent on the x, so it is not linear.

The third is a line so it is linear.

Answer:

Nonlinear, Nonlinear, Linear

Step-by-step explanation:

For if you graph 1 and 2 you will see both are not increasing evenly like a straight line, only the graph 3 shows a linear line.

11-
10
9
OP
7
6
Weight (kilograms)
01
NO
X
1
2
3
8
9
10
4 5 6 7
Age (months)
The scatter plot shows the weight of a child each month.
per month.
kilograms. The child gains an average of
The birth weight of the child is
Reset
Next

Answers

Answer:

13 kg

Step-by-step explanation:

I'm 14 years old so my weight was 50 kg

can someone give me a hand​

Answers

Answer:

Where's the table

Step-by-step explanation:

The ratio of Miles to Minutes is 3:1. How many minutes would it take to go 12 Miles

Answers

Answer:

4 minutes

Step-by-step explanation:

Miles to Minutes = 3:1

Miles to Minutes = 12:?

12/3=4

Miles to Minutes = 12:(1x4)

Miles to Minutes = 12:4

Miles = 12

Minutes = 4

Combine like terms 3x^2 + 4x^3 + 6x^2

Answers

9x^2 + 4x^3
Hope this helped

Answer:

3x^2+6x^2= 9x^2

9x^2+4x^2

Step-by-step explanation:

Two groups are going on a trip to a theater. The first group has 30 students and 4 adult chaperones. The second group
has 25 students and 4 adult chaperones.
The cost, in dollars, for each student ticket, s, and each adult ticket, a, can be determined using the system of equations
below.
30s + 4a = 720
25s + 4a = 620
What is the cost for each student ticket?

Answers

Answer:

Step-by-step explanation:

The radius of a circle is 7 centimeters. What is the circle’s circumference?

Use 3.14 for pi

Answers

The circle’s circumference is 43.98. Hope this helps!

Answer:

43.96

Step-by-step explanation:

Circumference formula: 2 x r x pi

2 x 7 x 3.14= 43.96

what type of number is -
[tex] \sqrt{16} [/tex]
​

Answers

Answer:

perfect square / rational

4

Step-by-step explanation:

Answer:

root of 16. or 4

Step-by-step explanation:

The table shows a function. Is the function linear or nonlinear?
x y
7 20
8 12
9 7

Answers

Answer:

Non-linear because none of them repeat.

Step-by-step explanation:

non linear babe, none of them repeat

Which point is a reflection of (-3,-3) across the y-axis?
(-3, 3)
(3, 3)
0 (-3,-3)
o
(3,-3)

Answers

Sorry if it’s too late, but I worked it out for you.

The point which is a reflection of (-3,-3) across the y-axis is, (3, - 3)

What is Coordinates?

A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.

We have to given that;

The point is,

⇒ (- 3, - 3)

Now, We know that;

The rule of reflection after across the y - axis is,

⇒ (x, y) = (- x, y)

Thus, The point which is a reflection of (-3,-3) across the y-axis is,

⇒ (x, y) = (- x, y)

⇒ (-3, -3) = (- (-3), -3)

              = (3, - 3)

Learn more about the coordinate visit:

https://brainly.com/question/24394007

#SPJ2

x-1/x^2 - x - 20 Give the equivalent numerator if the denominator is (X - 5)(x + 4)(x + 3)
x^2 + 2x + 3
x^2 + 2x - 3
x^2-3​

Answers

Answer:

[tex]x^2+2x-3[/tex]

Step-by-step explanation:

Note that [tex]x^2-x-20=(x-5)(x+4)[/tex], so, if the denominator is [tex](x-5)(x+4)(x+3)[/tex], we need to multiply the numerator by [tex](x+3)[/tex]. And [tex](x-1)(x+3)=x^2+2x-3[/tex].

Evaluate 7y - 2
when y = 9

Answers

Answer:

The answer is 61.

Step-by-step explanation:

7(9)-2

63-2

61

Answer:61

7*(9)-2

63-2

61

Hope it's useful

ASAP I WILL GIVE BRAINLIEST

Which statements apply to the expression 5 ?

The answers/options r in the pic​

Answers

Answer:

ok so in my math class I just learned this so sry if I am wrong but so

Answer:

Options 1, 3, 4, 7

Step-by-step explanation:

I'm guessing you meant the expression 3/5^3.

The base would be 3/5 because that is the number that the exponent is raising.

The exponent is 3 because that's the small number above and to the right of 3/5.

The expanded form is 3/5 × 3/5 × 3/5 because there's an exponent of 3. An exponent means you multiply the number by itself, the number of times it's being raised to. The exponent is 3 and 3/5 is being multiplied 3 times.

The solution would be 27/125 because when you multiply fractions, you just multiply straight across. 3 × 3 × 3 is 27 and 5 × 5 × 5 is 125.

I hope this makes sense, it's kinda hard to make it understandable without being able to actually talk to you.

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEE BRAINLIEST TO RIGHT ANSWER FIND X

Answers

9514 1404 393

Answer:

  x = 19

Step-by-step explanation:

Corresponding sides are proportional.

  full length/right segment = 36/20 = (x+5+30)/30

Multiplying by 30 gives ...

  54 = x +35

  19 = x . . . . . . . subtract 35

While commuting, a driver sets her smartphone to randomly play songs from a pre-selected list. Of the songs on the list, 6 are rock, 5 are hip-hop, and 3 are country. What is the probability that the first song played is rock?

Answers

Out of all the songs played , the probability that the first song played is rock would be, 2/7

Answer: 6/14

Step-by-step explanation: There are 6 rock songs and a total of 6+5+3= 14 songs. So, the probability is 6/14

what is the coefficient of x in the equation?
y=x+4

Answers

Answer:

1

Step-by-step explanation:

When a variable does not have a visible coeffecient then the coefficient is 1. (Double check to make sure I'm correct)

words every 20 minutes, whilo Becky's rate is represented by the graph below. Who types at a faster rate , Armav or Becky? PLEASE HELP I WILL MARK YoU BRAINALIST!!!!

Answers

Answer:

The anwser is 1340

Step-by-step explanation:

divide 335 by 5 then multipilyby 20

I need help I’m not sure if this the right answer.!

Answers

Answer:

is A

Step-by-step explanation:

00000000000000000000000000

Answer:

Its 0 because 12+ (-12) = 0

on their first day, researchers explore a part of the ocean floor that is 60 feet below sea level. This depth can be represented by the integer -60. On their secon dive, researchers explore a deeper depth.
Write an inequality that represents the possible depth, d, of the researchers' second dive.

Answers

Answer:

d < - 60

Step-by-step explanation:

Given that:

Depth, d of ocean floor on first dive = 60 feets below sea level = - 60

Depth, d explored on second dive is deeper than that of fist dive

Hence, possible depth, d, explored on second dive can be represented by the inequality ;

d < - 60

Measurement of angles

Answers

Answer:

Measuring an angle using a protractor in anticlockwise direction:  

This is measurement in anticlockwise direction. Thus, we will use the inner scale to measure the angle.

The centre of the protractor is placed on the vertex B of the angle ABC. The base line of the protractor should coincide...

Read the markings where the arm BC overlaps the markings on the protractor.

Step-by-step explanation: Hope this helps :)

9x-(3x-3)=21
Solve the equation. Select the correct choice below and if necessary, fill in the answer box to complete your choice. The solution set is (Simplify your answer. Type an integer or a fraction. Use a comma to separate answers as needed.) The solution is all real numbers. The solution is the empty set.

Answers

9x-(3x-3)=21 is x = 3 when simplified.

Each tile is 3/2 feet by 3/2 feet. There are 10 tiles on the bathroom floor.



What is the area covered by the tiles?

Explain how you know.

Answers

9514 1404 393

Answer:

  22.5 square feet

Step-by-step explanation:

The area covered by one tile is the product of its dimensions:

  A = lw

  A = (3/2 ft)(3/2 ft) = 9/4 ft²

The area covered by 10 tiles is 10 times the area covered by one tile. The area covered is ...

  covered by tiles = 10 × 9/4 ft² = 90/4 ft²

  covered by tiles = 22.5 ft²

22 1/2 square feet is the area covered by tiles.

.................................................

Answers

Answer:

(7,-4)

Step-by-step explanation:

3+2=5.  5+2=7

6-5=1  1-5=-4

(7,-4)

Simplify -1-5/2-12

Divide: -27/10 divide 18/75

Answers

1.
Exact form:
-27/2

Decimal form:
-13.5

2. -81/125

guys I really need help plsss

Answers

Answer:

x = 3

Step-by-step explanation:

Multiply the first equation by -1, then add it to second equation.

 2x+9y = -12

-2x-7y = 8

-------------------

 2y = -4

Solve for y

2y = -4

y = -2

Plug value of y into one of the equations and solve for x

2x + 9(-2) = -12

2x  = 6

x = 3

A CD costs $13.50 before tax. What is the total cost after a 8% sales tax is added?

Answers

Answer:

$14.58

13.50+1.08= $14.58

Solve the equation d- 1/4 = 3

Answers

Answer:

d = 13/4

Step-by-step explanation:

Answer:

d= 13/4 or 3.25

plz give brainliest

Step-by-step explanation:

The table represents an exponential function.

A 2-column table has 4 rows. The first column is labeled x with entries 1, 2, 3, 4. The second column is labeled y with entries 2, two-fifths, StartFraction 2 Over 25 EndFraction, StartFraction 2 Over 125 EndFraction.

What is the multiplicative rate of change of the function?

Answers

Answer:

b. x/8 + x/16 = 3/4

4 miles

Step-by-step explanation:

edge

Given AB congruent to EB and BD congruent to BC why is angle ABC congruent to EBD

Answers

Answer:

SAS

Step-by-step explanation:

Side angle side Test

2 sides are given equal and angle between these two side is equal in both triangle

hence by SAS test

Triangle ABC and EBD are congruent

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