A store is having a sale on chocolate chips and walnuts. For 4 pounds of chocolate chips and 8 pounds of walnuts, the total cost is $33. For 2 pounds of chocolate chips and 3 pounds of walnuts, the total cost is $13.
Find the cost for each pound of chocolate chips and each pound of walnuts.

Answers

Answer 1

Answer:

chocolate chip 7

walnuts 3.5

Step-by-step explanation:

assume x=chocolate chips

 y=walnuts.

equation

4x + 8y=33

(2x+3y=13)×2

new eq

4x + 8y=33

4x + 6y=26

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

 2y=7

  y=7/2

4x+ 8y = 33

4x + 8(7/2)= 333

4x= 33-28

x=7.00


Related Questions

What is the volume of the rectangular prism? Please Help​

Answers

Answer:

60 cm cubed I think

Step-by-step explanation:

Answer:

60

Step-by-step explanation:

use the Area formula

L*W*H

3*5*4=60

Can a triangle have sides with the given lengths ? Explain . 1 ft , 2 ft , 4ft

Answers

I think it would be possible to have a triangle with the given lengths. It would just look a bit wonky and weirdly angled

What is the average rate of change between x=1 and x=5 for y=2x+5

Answers

Answer:

the average rate of change is 2 with an intercept of 5

Step-by-step explanation:

how many sides does a polygon have whose total number of diagonals is 20?​

Answers

Answer:

there would be 8 sides if there are 20 diagonals

Mary is going down a straight waterslide that is 150 feet above the ground. The waterslide is 225 feet long. What is the angle of elevation with the ground to the top of the waterslide?round to two decimals places

Answers

Answer:41.81 degrees

Step by step solution: see photo

A random sample of 40 adults with no children under the age of 18 years results in a mean daily leisure time of 5.65 hours, with a standard deviation of 2.43 hours. A random sample of 40 adults with children under the age of 18 results in a mean daily leisure time of 4.37 hours, with a standard deviation of 1.73 hours. Construct and interpret a 90% confidence interval for the mean difference in leisure time between adults with no children and adults with children. (u1 - u2)
Let u1 represent the mean leisure hours of adults with no children under the age of 18 and u2 represent the mean leisure hours of adults with children under the age of 18. The 90% confidence interval for (u1 - u2) is the range from (???, ???) round to 2 decimals

Answers

Answer:

The 90% confidence interval for (u1 - u2) is the range from; ( 0.50 - 2.06 )

Step-by-step explanation:

Given the data in the question;  

Adult with No children under 18                    Adult with children under 18

x"₁ = 5.65                                                             x"₂ = 4.37

s₁ = 2.43                                                               s₂ = 1.73

n₁ = 40                                                                  n₂ = 40

with 90% confidence

significance level ∝ = 1 - 90% = 1 - 0.9 = 0.1    

Degree of freedom df = 39

Now, since variance are not equal and are also unknown, we will use 2 sample t-distribution method;

Standard Error: σx"₁ - x"₂ = [tex]\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2} }[/tex]

Critical value = [tex]t_{\alpha /2, df[/tex] = [tex]t_{0.05, df=39[/tex] = 1.645   { from standard normal table }

Now,

Margin of Error = E = [tex]t_{\alpha /2, df[/tex] × [tex]\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2} }[/tex]

we substitute

E = 1.645 × [tex]\sqrt{\frac{2.43^2}{40} + \frac{1.73^2}{40} }[/tex]      

E = 1.645  × √( 0.1476225 + 0.0748225 )

E = 0.7758478

Now, our point difference will be; x"₁ - x"₂ = 5.65 - 4.37 = 1.28

So Limit at 90% confidence interval will be;

x"₁ - x"₂ ±  E

Lower Limit = x"₁ - x"₂ - E = 1.28 - 0.7758478 = 0.50415 ≈ 0.50

Upper Limit = x"₁ - x"₂ + E = 1.28 + 0.7758478 = 2.05584 ≈ 2.06

Therefore, The 90% confidence interval for (u1 - u2) is the range from; ( 0.50 - 2.06 )

The front of a house needs to be painted black. The garage door is 1.5 m high and 2 m wide,
A) How many square meters of black paint will be needed to paint the house not including the
garage door?
Show your work

Answers

Answer:

3 m

Step-by-step explanation:

To geg the answer you need to multiply 1.5 times 2.

At what time t was the instantaneous velocity equal to the average velocity? (Round your answer to one decimal place.)

Answers

Answer:

Instantaneous velocity can be equal to average velocity when the acceleration is zero or velocity is constant because in this condition all the instantaneous velocities will be equal to each other and also equal to the average velocity.

What is the scale factor? Will mark brainlest

Answers

Answer:

The answer is -1

Step-by-step explanation:

What is the vertex form to standard form?

Answers

Answer:

[tex]y=x^2+2x-2[/tex]

Step-by-step explanation:

Vertex Form:

Vertex form is expressed as: [tex]y=a(x-h)^2+k[/tex], and is super useful when analyzing the vertex, which is given to be (h, k).

Standard Form:

Standard form is expressed as: [tex]y=ax^2+bx+c[/tex], and is also useful in certain cases.

Converting Vertex to Standard Form:

When converting standard to vertex we have to complete the square to rewrite the equation using a perfect square binomial, which is what really distinguishes the two. Now when we want to convert back into standard form, we simply need to get rid of this perfect square binomial, which we can do by expanding out the perfect square binomial into a trinomial.

So in other words, we want to multiply out the following: [tex](x+1)(x+1)[/tex], which becomes: [tex]x^2+2x+1[/tex] which you can solve by using polynomial multiplication, which is essentially just extending the logic of the distributive property. In general when given two polynomials to multiply, you look at one polynomial, and then multiply it by each term in the other polynomial, now repeat this for each term in the polynomial you were initially looking at. I'll provide a picture to better illustrate this. You can use FOIL if it helps you with multiplying binomials, but remembering how to generally use it, will help you when multiplying polynomials in general.

Now that we've multiplied out the expression, we can substitute it into the equation: [tex]y=x^2+2x+1-3[/tex], now just combine the constants: [tex]y=x^2+2x-2[/tex], and now you've converted it into standard form!

Please help will mark Brainly

Answers

Answer:

x=-1 and y=4

Step-by-step explanation:

When you draw a graph you will see point of intersection which is solution

A recipe from Sally’s "Chocoholic’s Cookbook" requires 70\frac{1}{6} grams of chocolate for each chocolate fudge cake. How many grams of chocolate would she need if she made one chocolate cake for each of her 12 closest friends?

Answers

Answer:

842 grams

Step-by-step explanation:

[tex]70\frac{1}{6} =\frac{421}{6}[/tex]

[tex]\frac{421}{6} *12\\\\842[/tex]

One cake consists of 421/6 grams of chocolate.

Since Sally wants to give 1 cake to 12 friends, we multiply 421/6 and 12.

To make 12 cakes, she needs 842 grams of chocolate.

Question 8: I Can Write the y=mx Form Equation of the Line.
A train traveled 120 miles in 3 hours. The train traveled at a constant speed. If the
train continues to travel at this rate, which equation can be used to determine y,
the total number of miles the train will travel, in x hours?
A. y = 40x + 20
B. y = 40x
C. 40y = x
D. 40 + y = x

Answers

Answer:

b

Step-by-step explanation:

120/3 = 40

40 miles in 1 hour

Answer:

B. y = 40x

Step-by-step explanation:

120 miles in 3 hours, that means every hour the train traveled 40 miles.

Equations of Exponential Functions

The population, P, of six towns with time t in years are given by the following exponential equations:

(i) P = 1000(1.08)t (ii) P = 600(1.12)t
(iii) P = 2500(0.9)t (iv) P = 1200(1.185)t
(v) P = 800(0.78)t (vi) 2000(0.99)t

Which town is growing the fastest?

a. i c. iv
b. iii d. vi

Please select the best answer from the choices provided

Answers

Answer:

C. iv

Step-by-step explanation:

I calculated it logically

Please help me solve it

Answers

Step-by-step explanation:

D

Makayla has 2 yards of ribbon to use for a craft project she cuts the ribbon into pieces that are 1/4 yard long how many pieces of ribbon does Makayla have

Answers

Answer:

8

Step-by-step explanation:

2/ 1/4 = 8

Answer: 8

Step-by-step explanation: 2 / 1/4 = 8

what is the percent of change for your grade if originally you got 5 questions right and you checked your work and ended up with 15 questions right

Answers

Answer:

To calculate the percent of change for your grade, you will need to know your original grade and your revised grade. If you originally got 5 questions right and you checked your work and ended up with 15 questions right, you can calculate the percent of change as follows:

Subtract your original score from your revised score to find the difference: 15 - 5 = 10

Divide the difference by your original score and multiply by 100 to express the change as a percentage: (10 / 5) x 100 = 200%

This means that your grade increased by 200%.

Step-by-step explanation:

Frank's father came home from San Francisco by airplane. He had to wait 1 hour and 45 minutes at the airport in San Francisco. Then Frank's
father had to wait another 35 minutes while the plane was in Portland.
How long did Frank's father spend waiting?

Answers

Answer:

2 hrs and 20 minutes

Step-by-step explanation:

45 + 35 = 80

Which graph is represented by the equation (X + 3)2 + (y – 4)2 = 9?
Unit test

Answers

Answer:

center (2, -3)

radius r = 3

Graph c

Step-by-step explanation:

Answer:

Graph A on edge

Step-by-step explanation:

determine the area of the parallelogram below

Answers

Answer:

A= BH

A=8cm ×2.2 cm

A= 17.6cm²

($75,000 - $80,000) x (1 - .21)

Answers

Answer:

-3,950

Step-by-step explanation:

First -5,000(1-0.21)

Then multiply -5,000 x 0.79 = -3,950

Which of the following rational functions is graphed below?

Answers

Answer:

B

Step-by-step explanation:

Cuz I graphed it, and it looked the same

In this expression: 5x – (12 -6), x is what we called the ....?

Answers

Answer:

x is the variable

Step-by-step explanation:

Answer:

Binomial

Step-by-step explanation:

There is two expression

Please help me with this question

Answers

Answer:

  cos(x -π/3) = (1/2)cos(x) +(√3/2)sin(x)

Step-by-step explanation:

You want cos(x -π/3) written in terms of sine and cosine.

Angle difference

The formula for the cosine of the difference between two angles is ...

  cos(a -b) = cos(a)cos(b) +sin(a)sin(b)

Application

We have a=x, b=π/3, so the desired function is ...

  cos(x -π/3) = cos(x)cos(π/3) +sin(x)sin(π/3)

We know that ...

cos(π/3) = 1/2sin(π/3) = √3/2

so the rewrite is ...

  cos(x -π/3) = (1/2)cos(x) +(√3/2)sin(x)

find the value of x !!


thanks :)

Answers

According to question as both side are equal so it is an isosceles triangle and the value of X is 18.

What are the properties of Isosceles Triangle?

An isosceles triangle is a triangle with two sides of equal length. Some properties of an isosceles triangle include:

The two equal sides are called the legs of the triangle and the remaining side is called the base.The angle between the legs is always equal to the angle between the base and one of the legs.The altitude (perpendicular line segment from a vertex to the opposite side) bisects the base of the triangle.The median (line segment from a vertex to the midpoint of the opposite side) and the altitude from the same vertex to the opposite side are also congruent.The circumcenter (center of the circle that passes through all three vertices) of an isosceles triangle is always located at the midpoint of the line connecting the two vertices of the congruent sides.The line that is bisecting the angle between the congruent sides (also known as the angle bisector) also bisects the side opposite to that angle.

so In this triangle ,

The mid point on horizontal side is given and 5m line cut the mid point of both the sides.

both side are equal as it is an isosceles triangle.

and given in the question,

side/2 =9

and  one side is equal to x.

and both sides are equal,

therefore

side = 9*2 = 18

so the value of x = 18.

To know more about Isosceles Triangles visit:

brainly.com/question/13664166

#SPJ1

Malcom wrote the equivalent ratios shown below. Find the scale factor he used to write the equivalent ratios
9/40 and 54/240

Answers

In this question, we're looking for the number Malcom used to scale the two numbers. We can see there's a pattern, 9 is 1/6 of 54 and 40 is 1/6 of 240!

(54 divided by 9 is 6 and 240 divided by 40 is 6!)

therefore, the scale factor must be 6

Sam had 5 fish. She ate 2 how many did she have left

Answers

Answer:

3

Step-by-step explanation:

HELP ME I'LL GIVE BRAINLIEST
DON'T YOU DARE STEAL THE POINTS OR I WILL HUNT YOU DOWN

Answers

11h+33

30p+15j

4p+8

i feel like im about to die, ur a lil scary

Pls awnser this Giving brainlest to the right person that has the awnser

Answers

Answer:

top one is dependent

bottom is independent

Step-by-step explanation:

the amount of money you pay is based off of the amount of time on your subscription

How many ways can you arrange 4 of 6 trophies on a shelf?

Answers

Answer:

24

Step-by-step explanation:

i did 4x6

4x6=24

the reason i did this is because that is how i do this the rest of the class has their fancy diagrams and are being hyponthageese and not listening to me to find that it is the easiest way to find the answer

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