Mathematics High School

Helen spent $7.75 to purchase 23 snack-sized bags of chips c and pretzels p for a club meeting. The following system represents this solution.
{c+p=23
{0.25c+0.5p=7.75
How many of each type of snack did Helen buy?

Answers

Answer 1

Answer:

pretzels = 8

chips = 15

Step-by-step explanation:

{ c + p = 23

{ 1/4c + 1/2p = 7.75

Both sides * 4

 c + 2p = 31

- c + p = 23

p = 31 - 23 = 8

pretzels = 8

chips = 15

Related Questions

Please can you help me with this

Answers

Answer:AB=CD=16cm

area of parallelogram=b×h

area of ABCD=CD×AE=AD×CF

16×8=AD×10

128=AD×10

12.8=AD

Step-by-step explanation:

Mrs. Booker's meal at Chick-fil-A costs $16.78.
The tax on the meal is 6%. How much was her
total bill, including tax?

Answers

Answer:

17.79

Step-by-step explanation:

16.78*1.06=17.886

I desperately need help.

Madison and Lucas went to the fair. Madison rode 8 rides and spent $20. Lucas rode 5 rides and spent $17. Write a linear equation, in slope-intercept form, that models the cost y of one person going on x rides. You can write the equation in any form.
1. Write an ordered pair representing Madison's data. Remember: ordered pairs look like (2,6)
2. Write an ordered pair representing Lucas's data. Remember: ordered pairs look like (2,6)
3. Calculate the slope
4. Write the Equation of the line

Answers

Answer:

first solve for x

8x=20

x=2.5

5x=17

x=3.4

then your equations

Madison: y=2.5x

Lucas: y=3.4x

then your ordered pairs

Madison: (4,10)

Lucas:(3,10.2)

then your slope

Madison-2.5

Lucas-3.4

I hope this is good enough:

What is the "c" called in phythagorean theorem

Answers

Answer: The Pythagorean theorem is used for right triangles. "c" = the hypotenuse, this is the longest side of the triangle and is always opposite the 90 degree angle. The values of "a" and "b" are the other 2 sides.

Step-by-step explanation:

Hypotenuse

Hope that helped

The cost of 3 pounds of grapes is $6.57. What is the constant of proportionality that relates the cost in dollars, y, to the number of pounds of grapes, x?

Answers

Answer:

$2.19

Step-by-step explanation:

Given that :

Cost of 3 pounds of grape = $6.57

Cost in dollars = y ; number of pounds = x

Cost in dollars α number of pounds

Cost in dollars = k * number of pounds

k = constant of proportionality

$6.57 = k * 3

$6.57 = 3k

Divide both sides by 3

6.57 / 3 = 3k/ 3

2.19 = k

k = $2.19

Guys Please help I have no idea what the answer is

Answers

Answer:

Step-by-step explanation:

32 + 42 + x = 180

x = 106


Which linear equation represents the graph?

A. Y= 3x+6

B. Y= 3x-6

C. Y= -3x+6

D. Y= -3x-6



Answers

Answer:

The answer is C. Y= -3x+6

The answer can be found by substitute 0 into x and find the value of y. If the value is same with graph then it is correct.

Thank you and please rate me as brainliest as it will help me to level up

b) Factorise
Factorise y2 + 2y - 24
​

Answers

Answer:

(y + 6)(y - 4)

Step-by-step explanation:

Factor the following:

[tex] \longrightarrow [/tex] y² + 2y - 24

The factors of -24 that sum to 2 are 6 and -4.

So,

[tex] \longrightarrow [/tex] y² + (6 - 4)y -24

[tex] \longrightarrow [/tex] y² + 6y - 4y - 24

[tex] \longrightarrow [/tex] y(y + 6) - 4(y + 6)

[tex] \longrightarrow [/tex] (y + 6)(y - 4)

Answer:

( y-4) ( y+6)

Step-by-step explanation:

= y^2 + ( 6 - 4)y - 24

= y^2 + 6y - 4y - 24

= y( y + 6) - 4(y + 6)

= ( y - 4 ) ( y + 6)

Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator.

12 min to 20 min

Answers

Answer: pretty sure it’s 12/20

Help will give brainliest!!

Answers

Answer:

5

Step-by-step explanation:

25x+5=130 ( corresponding angles are congruent )

25x=125

x=5

Fred is playing tennis. For every 2 of his serves that land in, 3 serves land out. If he hit 28 serves in, how many serves landed out?

Answers

Answer:

the answer is 56.

Step-by-step explanation:

2 for every 4 = 1 for every two, so 28 multiplied by two.

Determine the midpoint of the longest side ? A)(3.5,0.5)
B)(3,2)
C)(11.5,1.5)
D)(2.5,0.5)

Answers

D is the correct answer

Express -4/-7 as a rational numbers with denominator.

1. -28
2. 7
3. 35​

Answers

Step-by-step explanation:

1. -28

-4/-7 × -1/4

4/7 × -1/4 = -4/28

2. 7

-4/-7 × 1/1

4/7 × 1/1 = 4/7

3. 35

-4/-7 × 1/5

4/7 × 1/5 = 4/35

Someone please help me I don’t understand!!!!

Answers

Answer:

y= 2x+3

Step-by-step explanation:

4x(x + y) - y (x + y)
=​

Answers

Answer:

=4x2+3xy−y2

Hope this helps you

Rema spent 6 days reading her book, completing the same fraction of the book each day. If she read a total of StartFraction 8 Over 9 EndFraction of her book after 6 days, what fraction of the book did she read each day? StartFraction 5 Over 54 EndFraction of the book StartFraction 3 Over 27 EndFraction of the book StartFraction 7 Over 54 EndFraction of the book StartFraction 4 Over 27 EndFraction of the book

Answers

Answer:

D) StartFraction 4 Over 27 EndFraction of the book

Step-by-step explanation:

I literally just took the quiz and I got it right. So... Good luck with the rest of it!

Answer:

d

Step-by-step explanation:

Given: HF = HJ.FG = JK.
H is the midpoint of GK.
Prove: AFGH 2 AJKH
G
H
K

Answers

Answer:

Well, make brainlist okay

1) FH = JH ( GIVEN) Side

2) FG = JK (GIVEN) side

3) GH = HK ( MIDPOINT) side

AND BOOM

FGH = JKH ( from SSS, mention eq)

S mean side

HELLO HUMANS! QUICK QUESTION. WILL MARK AS BRAINLIEST!
How do you solve for the slope of a graph that isn't straight? How would I solve the slope for this?

Answers

9514 1404 393

Answer:

  use the slope formula

Step-by-step explanation:

Usually, you are asked for an average slope over some interval. The slope is calculated on that interval the same as it would be if you were given two points, one at each end of the interval.

  m = (y2 -y1)/(x2 -x1)

For example, if you wanted to know the slope on the interval [1, 2] hours, the points you would use would be ...

  (hours, miles) = (1, 25) and (2, 75)

The corresponding slope on that interval is ...

  m = (75 -25)/(2 -1) = 50 . . . . miles per hour

__

You can identify four (4) regions on this graph in which the slope is constant:

  (0, 1) . . . slope is 25 mph

  (1, 2) . . . slope is 50 mph, as computed above

  (2, 3) . . . slope is 0 (the rider has stopped)

  (3, 5) . . . slope is 25 mph

Over different intervals, you need to identify the points involved and use the formula to compute the average slope.

x pounds of Repperts chocolate valued at $3.50 per pound is mixed with y pounds of Godiva
chocolate valued at $4.30 per pound to produce 10 pounds of a mixture selling for $39. Find x
and y, the number of pounds of each type of chocolate. write two equations and solve using elimination
!!!!PLEASE HELP!!!!

Answers

Answer:

5 pounds each

Step-by-step explanation:

Required equations:

x + y = 103.50x + 4.30y = 39

Substitute x in the second equation:

x = 10 - y

Solve for y:

3.5(10 - y) + 4.3y = 3935 - 3.5y + 4.3y = 390.8y = 4y = 4/0.8y = 5

Then

x = 10 - 5 = 5

5 pounds each

5x+18=7x-6 what’s the answer?

Answers

Answer:

x = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

5x + 18 = 7x - 6

Step 2: Solve for x

Subtract 5x on both sides:               18 = 2x - 6Add 6 to both sides:                         24 = 2xDivide both sides by 2:                     12 = xRewrite:                                              x = 12

Step 3: Check

Plug in x to verify it's a solution.

Substitute:                    5(12) + 18 = 7(12) - 6Multiply:                        60 + 18 = 84 - 6Add/Subtract:               78 = 78

And we have our final answer!

Find the are of a square with side length x when x is equal to the given value. Are the area of a square and the length of its side directly proportional? Justify your answer.

x = 10in

Answers

Answer:

100 in²

Step-by-step explanation:

Area formula

A = x²

As per formula the area of a square and length of side are directly proportional

When x = 10 in, area is

A = 10² = 100 in²

Please help Thank you if you do

Answers

Answer:

Z×z×z÷z

Step-by-step explanation:

I don’t understand can someone help me

Answers

You set 49 equal to 8x - 15

So

8x - 15 = 49
+15 + 15

8x = 64

Then divide by 8

X= 8

what integer multiplied by negative 4 gives negative 32

Answers

8
8 multiplied by -4 gives -32

Answer:

8

Step-by-step

4x8=32 brainliest pls

I am so confused, I was never assigned the story

Answers

Answer:

C

Step-by-step explanation:

I don't why it seems like a greek story ending

Answer: It is D

Step-by-step explanation: Daedalus and his son was trapped in a tower, so the father made some wings out of wax for them to escape. The son was happy that he flew towards the sun and the wax melted causing him to fall in the ocean and drown.

3х - 5< 19
Will award the brainlest

Answers

Answer:

3x - 5 < 19

add 5 on both sides

3x < 24

divide both sides by 3

x < 8

in interval notation that is ( - infinitySymbol , 8)

Step-by-step explanation:

Answer:

X<8

Step-by-step explanation:

3x-5<19

+5 on each side

3x<24

÷3 on each side

X<8

The distance between the point (- 5 ,-2) and y-axis is
length unit.
(a) - 5
(b) – 2
(c) 2
(d) 5​

Answers

Using our x coordinate to find the distance. It is because D distance is always positive.

The lenngths of the sides of the triangle are in the extended ratio 8:9:10. The primeter of the triangle is 108 cm. What are the lengths of the sides?

Answers

Answer:

A(8)=32cm

B(9)=36cm

C(10)=40cm

Step-by-step explanation:

let 8:9:10=A:B:C

∑ratios=8+9+10=27

Have a great day!

Step-by-step explanation:

3 includes of snow in 5 hours?

Answers

Answer:

3 TIMES 5

Step-by-step explanation:

What is the equation in slope-intercept form for the graph shown?

Answers

Answer:

y=-2x+1

Step-by-step explanation:

The slope is negative 2 because the way the line is pointing, and the y-intercept is 1.

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