1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anvisha [2.4K]
2 years ago
15

a store is having a sale on walnuts and chocolate chips. for 3 pounds of walnuts and 5 pounds of chocolate chips, the total cost

is $20. for 6 pounds of walnuts and 2 pounds of chocolate chips, the total cost is $14. find the cost for each pound of walnuts and each pound of chocolate chips.
Mathematics
1 answer:
Step2247 [10]2 years ago
7 0

Answer:

  • Walnuts - $1.25, chocolate chips - $3.25

Step-by-step explanation:

Let walnuts = x, chocolate chips = y

<u>Set a system and solve:</u>

  • 3x + 5y = 20
  • 6x + 2y = 14

<u>Double the first equation and subtract the second one from it:</u>

  • 6x + 10y - 6x - 2y = 40 - 14
  • 8y = 26
  • y = 26/8
  • y = 3.25

<u>Find the value of x:</u>

  • 6x + 3.25*2 = 14
  • 6x = 14 - 6.5
  • 6x = 7.5
  • x = 7.5/6
  • x = 1.25
You might be interested in
What is the slope between the two points?<br> (6,8 ) and (-3, 8 )
Marta_Voda [28]

Answer:

slope=0

Step-by-step explanation:

Slope (m) = ΔY /ΔX =0  

ΔX = -3 – 6 = -9

ΔY = 8 – 8 = 0

Distance (d) = √ΔX2 + ΔY2 = √81 = 9

Equation of the line:

y = 0x + 8

When x=0, y = 8

5 0
3 years ago
Read 2 more answers
PLEASE HELPPP
Inga [223]
1. write in standard form
2. group like terms
3. combine like terms
4. distribute the negative
6 0
3 years ago
a. What is the area and circumference of circle P? Explain how you calculated this answer. b. If the arc measure of arc COD is 1
Vikki [24]

Answer:

a) 9*π or approx 28.26

b) ∡CRB=100°

Step-by-step explanation:

As known for secants crossing each other inside the circle is coorect the following:

BR*RD=AR*RC

=> 3*RD=4*4.5

RD=6

The diameter of the circle with center P is BD=BR+RD=3+6=9

So the radius of the circle is D/2=9/2=4.5

As known the circumference of any circle can be calculated as

C=2*π*r  , where r is the circle's  radius

So C=2*4.5*π=9*π= approx   3.14*9=28.26

b) ∡CRB=∡ARD= (arcBC+arcAD),  where arcBC and arcAD smaller arcs

BD is the circle's  diameter, so arc BD=180°

So arcBC=180°-arcCOD=180°-100°=80°

Similarly arcBD=180°

arcAD=180°-arcBSA=180°-60°=120°

∡CRB= (80°+120°)/2=100°

5 0
3 years ago
If you have 66 data observations in a sample, how many classes (bins) does the sturges' rule recommend for you to construct a fr
Iteru [2.4K]

According to Sturge's rule, number of classes or bins recommended to construct a frequency distribution is k ≈ 7

Sturge's Rule: There are no hard and fast guidelines for the size of a class interval or bin when building a frequency distribution table. However, Sturge's rule offers advice on how many intervals one can make if one is genuinely unable to choose a class width. Sturge's rule advises that the class interval number be for a set of n observations.

Given,

n = 66

We know that,

According to Sturge's rule, the optimal number of class intervals can be determined by using the equation:

k=1+log_{2} n

Here, n is equal to 66 and by substituting the value to the equation we get:

k=1+log_{2} (66)

k = 7.0444

k ≈ 7

Learn more about Sturge's rule here: brainly.com/question/28184369

#SPJ4

8 0
1 year ago
Infinity - infinity?
pav-90 [236]
Do you mean what does infinity + infinity equals to? If so, infinity + infinity = infinity.
3 0
3 years ago
Other questions:
  • What is the answer to<br><img src="https://tex.z-dn.net/?f=150%20%5Cgeqslant%2015x" id="TexFormula1" title="150 \geqslant 15x" a
    8·1 answer
  • What's 7 1/8 in a decimal
    7·1 answer
  • Shley solved the exponential equation 3x+1 = 15 and her work is shown below. what is the first step she did incorrectly? step 1:
    14·1 answer
  • What are the partial products that result from multiplying 15 x 32?
    14·2 answers
  • The system of equations is coincident.<br> What are the missing values?<br> x+3y=5<br> 4x+__y=__
    14·1 answer
  • Pls help with correct choice
    14·1 answer
  • The points P and Q have coordinates (-1, 6) and (9, 0) respectively.
    7·1 answer
  • You finish
    6·1 answer
  • Can someone help me with this? ^_^<br> 4(-3f-4)-9f4(−3f−4)−9f
    7·1 answer
  • a package of balloons contains 5 green 3 yellow 4 red and 8 pink balloons suppose you reach into the package and chose one ballo
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!