Mathematics High School

If x= 5 and y = 2, work out the value of a) 3x + y
b) 2x2
c) (x - y)2

If X= 5 And Y = 2, Work Out The Value Of A) 3x + Yb) 2x2c) (x - Y)2

Answers

Answer 1

Answer:

17, 50, 9

Step-by-step explanation:

Hello

We already know the values of x and y, 5 and 2.

All we have to do to figure out a, b, and c, is to plug in those known values.

a) 3x + y

Let's plug in x and y as 5 and 2

3(5) + 2

15 + 2

17

b) 2x^2

2(5)^2

2(25)

50

c) (x - y)^2

(5 - 2)^2

3^2

9

Answer 2

Answer:

A) 3(5)+2= 17

B) 2(5)2=  50

C) (5-2)2= 9

Step-by-step explanation:

Related Questions

Find the missing value so that the two points (-1, -1) and (x, 1) have a slope of 217.
6
7
10
12

Answers

Answer:

6

Step-by-step explanation:

you needed to make a graph and then find the (-1,-1) and then move two spaces to the right and then seven up and you get (6,1)

hope this helped

I am not sure how to do this.​

Answers

Answer:

Hopefully this can help

Step-by-step explanation:

Plz help due tomorrow

Answers

Answer:

1/2

Step-by-step explanation:

The problem is asking for the coefficient of the sum of the two expressions, which are 2/3 and -1/6.

2/3 + -1/6 = 1/2, therefore, the answer is 1/2.

Is 9x negative or positive?
-9x + 17x + -8x

Answers

Answer:

-9x is negative but the answer of the whole problem would be 0.

Find the missing number (i.e. the coefficient in front of x) so that the equation has no solutions: □x + 4 = 4x + 15

Answers

Answer:

X=8

Step-by-step explanation:

HIIII
anyone know what's 10.00 - 6.79 is if you do please explain how'd you got your answer it'll make me understand more (: - Liz ( kim's little sister lol )

Answers

Answer:

3.21

Step-by-step explanation:

got it from googIe

Answer:

I got 3.21 by subtracting them

10.00

-6.79

____

3.21

someone plz solve this quickly!

Answers

Answer:

Tyler made an error on step 2

The correct answer should be -20x+33

Which value from the set (54,45,27,6) makes 54/x = 9 true?

Answers

Answer:

x = 6

Step-by-step explanation:

54/6 is 9. This is the only correct one.

Hope it helps!

Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation.

a. no correlation
b. positive correlation; as time passes, the birth rate increases.
c. positive correlation; as time passes, the birth rate decreases.
d. negative correlation; as time passes, the birth rate decreases.

Answers

Answer:

a

Step-by-step explanation:

Answer:

I think D, Correct me if I'm wrong!

Step-by-step explanation:

como seria una ecuacion de (2,3) si la pendiente es -2​

Answers

Answer:

Hola, antes de dar la respuesta quisiera recomendarte una app llamada m a t h w a y (sin espacios) esto te va a ayudar con preguntas sobre matematica y super rapido.

Step-by-step explanation:

(2,3) pendiente de -2

                                           1. Usa la fórmula de la ecuación de la recta para

                                              hallar b

y = mx + b

                                          2.  Substituye el valor de m, x y "y" en la ecuacion

3 = (-2) · (2) +b                      

                                           3. Calcula para hallar el valor de b

b = 7

                                          4. Ahora con el valor de b, calcule de nuevo

y = mx + b

3 = -2x +7

Espero esto haya ayudado en algo, sino puedes intentar buscando en el sitio que recomende.      

30. A mom bought her kids 3 cartons of milk
for $1.25 each and 6 doughnuts. The total
cost was $6.90. Write an equation to
determine the cost of a doughnut.

Answers

Answer:

x = (1.25 * 3 - 6.90) divided by 6

Step-by-step explanation:

this will get the price of all the milk, then take it out of the total price, then divide it by 6 because there are 6 donuts, this will give you the price of 1 donut

Answer:

$3.15

Step-by-step explanation:

$1.25x3=$3.75

$6.90-$3.75=$3.15

Right answer gets brainlist

Answers

Answer:

132

Step-by-step explanation:

12 times 11= 132 PLEASE MARK BRAINLIEST

1. What is the measure
of AB?
A
264°
B

Answers

AB= 96

How to:
360-264
B= 96°, a full circle is 360°
360°-264°=96°

PLEASE HELP ME I WILL GUVE BRAINLIEST I REALLY NEED HELP

Answers

The word solution means the value that makes the equation true. 88 is the solution because it makes he equation true.

find the value of each expression for n = 2.​

Answers

Answer:

1. 22

2. 22

3. 28

Step-by-step explanation:

Substitue the n in each expression with two, then solve the problem for the value

The perimeter of the square below is 116 m. What is the value of a?
5a +9

Answers

(5a+9)4=116

20a+36=116

20a=116-36

20a/20=80/20

a=4

Determine how (if possible) the triangle can be proven similar:

Answers

Answer:

Not similar

Step-by-step explanation:

 You can only find the vertical angles at the intersection.

So, you know they share one angle.

That is not enough information to prove similarity.

Therefore, I'd say they're not similar.

if you form a triangle from three given angle measures, do you always get a unique triangle, or more than one triangle?

Answers

It depends on the measurements. If you have equal measurements, it would just be an equilateral triangle. If you got measurements that had two of the same degrees, that would be isosceles. Measurements that are all different to one another would be a scalene triangle.

Jaden is participating in a 4-day cross -country biking challenge. He biked for 56, 60, and 47 miles on the first three days. Over the four days he averaged ( arithmetic mean ) 57 miles per day. How many miles did he bike on the last day?

Answers

Answer:65

Step-by-step explanation:

Complete the following ratio table so that each pair represents the same rate.
1
5
2
10
3
15
4
20
5
25

Answers

51 so I hope that help you in the long turm

Answer:

Step-by-step explanation:


The Kings Dominion Gold Pass costs $89. If you buy it the first week of
December you will get a 15% discount. What will your total cost be with the
discount?

Answers

Answer:

$75.65

Step-by-step explanation:

1 - .15 = .85 = 85% of the price is what you pay

89 • .85 = $75.65

I NEED HELP I WILL MARK BRAINLIEST!!!
Find the slope of the following graph.

Answers

2/1 or 2
It's goes up by 2 and to the right once.

Answer:

1/2 or one half

Step-by-step explanation:

I did this question

jack wanted to leave a 15% tip on a $36.00 bill. How much would he leave for a tip
A. $7.20
B. $5.40
C. 3.60
D. $3.96

Answers

The answer is $5.40. hope this helped <3

Answer:

B = $5.40

Hope this helps!

Step-by-step explanation:

Which equation represents the graphed line?
y
6
4
NO
O
2
4
6
A. y - 1 = -2(x - 3)
O
B. y - 1 = -2(x + 3)
C. y + 1 = -2(x - 3)
O D. y + 1 = -2(x + 3)

Answers

Answer:

D

Step-by-step explanation:

you are buying decorations for a birthday party. the before tax total for 3 rolls of crepe paper and 20 balloons is $11.40. after you start decorating, you need more supplies. you buy 2 more rolls of crepe paper and 10 more balloons for $7.20 before tax. how much did each cost?

please help with an explanation.

Answers

Answer & Step-by-step explanation:

Let's have

C = Creepers

B = Balloons

1) 6C + 20B = 11.9  

2) 2C + 15B = 6.05

Eliminate

16C + 20B = 11.9 x3  

-2C + 15B = 6.05 x4

18C + 60B = 35.7  

-8C + 60B = 24.2

10C/10 = 11.5/10  

C = 1.15

13 × 20 – 15 × 9 + 20 × 7 – 6 × 15.

Answers

Answer:

the answer is 175

Step-by-step explanation:

have a good day

Answer:

The correct answer is 175.

Step-by-step explanation:

  [tex]13 * 20 - 15 * 9 + 20 * 7 - 6 * 15\\[/tex]

= [tex]260 - 135 + 140 - 90[/tex]

= [tex]400 - 225[/tex]

= 175.

4​x​ − 2 − 2​x​ = ​x​ − 5

−(​x​ + 3) = 2​x​ − 6



I need these step by step, please help!! I'll give brainliest and all of my points

Answers

Answer:

Step-by-step explanation:

What is the problem, can you write it better pls?

Answer:

x = - 3 and x = 1

Step-by-step explanation:

4x - 2 - 2x = x - 5, that is

2x - 2 = x - 5 ( subtract x from both sides )

x - 2 = - 5 ( add 2 to both sides )

x = - 3

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

- (x + 3) = 2x - 6 ← distribute left side

- x - 3 = 2x - 6 ( subtract 2x from both sides )

- 3x - 3 = - 6 ( add 3 to both sides )

- 3x = - 3 ( divide both sides by - 3 )

x = 1

15+26-13
Random okay have a great day

Answers

Answer:

28

Step-by-step explanation:

41-13=28

you too have a great day ♡

A six-sided fair die and an eight-sided fair die are rolled together. What is the probability of getting numbers whose sum is a multiple of 3? A 1/18 B 1/4 C 1/3 D 4/9 E 2/3​

Answers

Answer:

C 1/3

Step-by-step explanation:

The numbers on a 6-sides die are 1, 2, 3, 4, 5, 6.

The number of an 8-sided die are 1, 2, 3, 4, 5, 6, 7, 8.

All the possible sums are:

2, 3, 4, 5, 6, 7, 8, 9,

3, 4, 5, 6, 7, 8, 9, 10,

4, 5, 6, 7, 8, 9, 10, 11,

5, 6, 7, 8, 9, 10, 11, 12

6, 7, 8, 9, 10, 11, 12, 13

7, 8, 9, 10, 11, 12 ,13, 14

The multiples of 3 are shown in bold and italic.

There are 48 possible sums.

16 sums are multiples of 3.

p(numbers whose sum is a multiple of 3) =

(number of outcomes that are multiples of 3)/(total number of possible outcomes)

p(numbers whose sum is a multiple of 3) = 16/48

p(numbers whose sum is a multiple of 3) = 1/3

Answer: C 1/3

A principal of $2900 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 14 years?

Answers

Answer:

$6774.4

Step-by-step explanation:

Given data

P=$2900

r= 6.25%

t= 14 years

A=???

The compound interest formula is given as

A=P(1+r)^t

substiute

A= 2900(1+0.0625)^14

A= 2900(1.0625)^14

A= 2900*2.336

A= $6774.4

Hence the final amount is $6774.4

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