A merchant has coffee worth $40 a pound that she wishes to mix
with 60 pounds of coffee worth $90 a pound to get a mixture that
can be sold for $70 a pound. How many pounds of the S40 coffee
should be used?
O 20 pounds
O 40 pounds
100 pounds
O 50 pounds

Answers

Answer 1

Answer:

Step-by-step explanation:

let x = the number of pounds of cheaper coffee.

Since the merchant is mixing this with more expensive coffee, then

x + 60 = the number of pounds of medium priced mixed coffee.

The equation is gotten from this

+  =  

(x)($40)  + (60)($90)   = (x + 60)($70) or

            40x + 5400 = 70(x + 60)

Solve that equation and get x = 40

Answer: 40 pounds of $40 coffee.

i hope this helped


Related Questions

there are 34 people
I walk into the garden
You kill 30 people
how many people are in the Garden ?
Answer quick plz

Answers

Answer:

I guess 34 because the dead people were still in the garden

there are 6 people including me and you

which of the following situations describes a postive number

Answers

Answer:

B. Going up the elevator 14 floors

Step-by-step explanation:

Choice A can't be right because you are going below sea level (negative).

Choice C can't be correct either because the word "losing" let's you know that it's negative.

Choice D isn't right because if you are taking $20 from your checking account, it would be a negative number.

Hope this helps!

What is the inverse of v(x)= -3/4x - 1/3?

Answers

Step-by-step explanation:

v(x) = y = -3/4x - 1/3

y + 1/3 = -3/4x

x = -4/3 × (y + 1/3)

you see ? we only need to show how we calculate x out of y (instead of the normal direction of y or of x).

and to follow naming standards we now simply switch x and y, so that the inverse function is indeed again a function of x

y = -4/3 × (x + 1/3) = -4x/3 - 4/9

Simplify: X + x =
5y + y =​

Answers

Answer:

[tex]x + x = 2x \\ 5y + y = 6y \\ thank \: ou[/tex]

Hi can you help please :)

Answers

Answer:  5 miles/hour

Step-by-step explanation:  The slope of the line is 5:  every 1 hour adds 5 miles to the distance travelled.

Please Help Me
Which equation is an identity?
A. (9x/15) + 27 = (9x/15) + (27/15)
B. 3((x/2) + 16) - 16 = (3/2)x
C. -4(3 - 2x) = -12 - 8x
D. -5((x/15) - 16) - 30 = 50 - (1/3)x
E. 36((3/4)x- 2) + 72 =-72 + 27x

Answers

Answer:

C.

Step-by-step explanation:

An equation is an identity if the equation is always true regardless of what value you replace 'x' with.

This means we need to simplify the equations above to see which one will be true for any value of 'x'.

After simplifying equation C, we get -12-8x = -12-8x. Since both sides of the equation are the same, this equation will be true regardless of what value replaces x so this equation is an identity.

What is the y-coordinate of point D after a translation of
(x,y) - (x + 6,4-4)?

Answers

Answer:

Answer:The y coordinate of point D after translation is 1

Step-by-step explanation:

It is defined by 3 points and can be named at least 2 different ways

Answers

Three non-collinear points determine a plane.

This statement means that if you have three points not on one line, then only one specific plane can go through those points. The plane is determined by the three points because the points show you exactly where the plane is.

Complete the recursive formula of the geometric sequence 500,200,80,32,​

Answers

[tex]\boxed{\sf a_n=\dfrac{a_{n-1}}{10}\times 4,n\gt 1}[/tex]

Lets verify

[tex]\\ \sf\longmapsto a_2=\dfrac{a_1}{10}\times 4[/tex]

[tex]\\ \sf\longmapsto a_2=\dfrac{500}{10}\times 4=50(4)=200[/tex]

And

[tex]\\ \sf\longmapsto a_3=\dfrac{a_2}{10}\times 4[/tex]

[tex]\\ \sf\longmapsto a_3=\dfrac{200}{10}\times 4=20(4)=80[/tex]

And

[tex]\\ \sf\longmapsto a_4=\dfrac{a_3}{10}\times 4[/tex]

[tex]\\ \sf\longmapsto a_4=\dfrac{80}{10}\times 4=8(4)=32[/tex]

Hence verified

Lets predict next term

[tex]\\ \sf\longmapsto a_5=\dfrac{a_4}{10}\times 4[/tex]

[tex]\\ \sf\longmapsto a_5=\dfrac{32}{10}\times 4=3.2\times 4=12.8[/tex]

The normal pulse for healthy adults ranges from 60 to 100 beats per minute. Suppose if A Man’s pulse rate is 75 beats per minute, then what will be the pulse rate for 10 minutes.

Answers

Answer:

75x10=750

Step-by-step explanation:

75 beats for one minute times 10 mins

Write an equation of the line perpendicular to y=-3/4x that passes through the point ( 3,-8)

Answers

Answer:

y

=

4

3

x

+

4

3

Step-by-step explanation:

g(x)=x^2-5
g(9)
help!

Answers

You’re given g(x) = x^2 - 5

When asked to find g(9), you’re being told that x=9, since the x in the g(x) was replaced by 9.

So that’s telling you to put 9 in for all x’s:
g(9) = (9)^2 - 5

You then just need to clear up the right hand side.

9^2 - 5 = 81 - 5

= 76

So, g(9) = 76

What is the value of f(3) when
f(3) when f(x) = 4x+1

Answers

Answer:

f(3) = 13

Step-by-step explanation:

f(x) = 4x+1

f(3) = 4(3) + 1

f(3) = 12 + 1

f(3) = 13

Evaluate.
8 x 8 = 5
+ 3 eights
<
= 40 +
h
RE
=

Answers

Answer:

[tex]8 \times 8 = 5 \: ( \:8 \: ) + 3 \: eights \\ = 40 + 24 \\ = 64[/tex]

I hope I helped you^_^

How do you solve this?

Answers

Answer:

f(- 10) = 74

Step-by-step explanation:

To find f(- 10) , substitute n = - 10 into f(n) , that is

f(- 10) = - 7(- 10) + 4 = 70 + 4 = 74

Hello there!

We are given a function below:

[tex] \displaystyle \large{f(n) = - 7n + 4}[/tex]

To find f(-10), substitute n = -10.

[tex] \displaystyle \large{f( - 10) = - 7( - 10) + 4}[/tex]

Evaluate the f(-10)

[tex] \displaystyle \large{f( - 10) = 70 + 4}[/tex]

Recall

Negative × Negative = Positive

Therefore,

[tex] \displaystyle \large{f( - 10) = 74}[/tex]

f(-10) = 74

Let me know if you have any questions!

Topic: Functions

the perimeter of a rectangular tray is 60in the length of the tray is double the width of a tray determine the dimensions of the rectangular tray​

Answers

Answer:

Step-by-step explanation:

Width = w

Length = double the width = 2*w = 2w

Perimeter of rectangular tray = 60 in

2*(length + width) = 60

          2*( 2w + w) = 60    

                    2*3w = 60

                       6w  = 60

Divide both sides by 6

w = 60/6

w = 10 in

length =2w = 2*10 = 20

length = 20 in

Width = 10 in

Hurry up someone please

Answers

Answer:

x = 19.6

Step-by-step explanation:

If we need to find the value of x then first we need to

(7x-25) + (3x +9) = 180  (angles at the same side of transversal will be equal to 180 degree )

10x -16 = 180

10x = 180 +16

10x = 196

x = 196/10

x = 19.6

Write a equation in slope intercept form for the line with slope 2/5 and y- intercept -1

Answers

Answer:

[tex]y=\frac{2}{5} x-1[/tex]

Step-by-step explanation:

[tex]y=mx+c[/tex]

m= slope

c= y intercept

therefore,

m=2/5

c=-1

please help me with this thank you ​

Answers

hi <3

1) as the value ahead of the tenths position is a 5, you would round up.

this gives you the answer of 1.6

2) as the value ahead of the hundredths position is a 4, you would round down.

this gives you the answer of 1.55

3) as the value ahead of the thousandths position is an eight, you would round up.

this gives you the answer of 1.555

hope this helps :)

Angel got a job at in-n-out burger. He works 20 hours a week and makes $15.75 an hour. How much will his
paycheck be after 2 weeks of work (before uncle sam takes away taxes

Answers

Multiply hours per week by hourly pay rate:

20 x $15.75 = $315.00 per week

Multiply by 2 weeks:

$315 x 2 = $630

After 2 weeks paycheck is $630

Answer:

630

Step-by-step explanation:

15.75 x 20 = 315

315 is how much Angel makes in one week

315 x 2 = 630

630 is how much he will make in two weeks

The 2 signifies how many weeks have been worked

five friends by a package of 12 cookies and want to share them equally each friend will get 1/5 of the cookies how much will each friend get

Answers

Answer:

2.4 cookies

Step-by-step explanation:

Just divide

Which of the following is a terminating decimal?

Answers

The answer should be C


Together, two pipes can fill a tank in 3 hours.
One pipe alone can fill the tank in 5 hours.
How long does it take for the other pipe to
fill the tank alone?

Answers

Answer: 7.5 (h)

Step-by-step explanation:

Let say

a the outflow of the first pipe

b the outflow of the second pipe

T the volume of the tank.

x the time for filling with the second pipe

two pipes can fill a tank in 3 hours: a*3+b*3=T

One pipe alone can fill the tank in 5 hours : a*5=T

3*b=T -3a ==> 3b= 5a*3a=2a

b=2a/3

b*x=T ==> 2/3*a*x=T ==> 2/3*T/5*x=T ==> 2/15*x=1

x=15/2 = 7.5 (hours)

Help me with problems 23 “ solve for d “

Answers

Answer:

d = 72

Step-by-step explanation:

d + 13 + 95 = 180

(Angles are supplementary)

d + 108 = 180

d = 180 - 108

d = 72

The length of an object is measured as 34.8 centimeters. What is this measurement in scientific notation?

Answers

Answer:

34.8 x 10 to the power of 0.

Step-by-step explanation:

hope this helps

Please solve this if you can

Answers

Answer:

d = 3

Step-by-step explanation:

(7d+3)/4 = 6

Multiply each side by 4

(7d+3)/4*4 = 6*4

(7d+3) = 24

Subtract 3 from each side

7d+3-3 = 24-3

7d = 21

Divide by 7

7d/7 = 21/7

d = 3

can i have help please?

Answers

Answer:

38

Step-by-step explanation:

(34+ 18 × q)-(5^q + 7). q=2

34+18×2-(5²+7)

34+18×2-(25+7)

34+18×2-32

34+36-32

38

semoga membantu

Answer:

38

brainliest is appreciated

Step-by-step explanation:

q=2

(34 + 18 . q) - (5^q + 7)

(34 + 18 × 2) - (5^2 + 7)

70 - 32

38

(2-6i)(8+i)(9-3i). If u could show me the process that would be great ty <3

Answers

Answer:

(19)(-8i)

Step-by-step explanation:

(2 - 6i)(8 + i)(9 - 3i)

(2 + 8 + 9)(-6i + i - 31)

(19)(-8i)

(4x – 6) + (5x + 1).

Answers

Answer:

9x - 5

Step-by-step explanation:

(4x – 6) + (5x + 1).

4x - 6 + 5x +1

9x - 5

Have a good day

Answer:

9x - 5

Step-by-step explanation:

To get the this answer you would combine like terms. 4x and 5x are like terms, so you would combine them and get 9x. -6 and 1 are like terms, so you would combine those and get -5.

where does line AC intersect with line DR

Answers

Answer:

AC intersect with DR at A

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