Mr James has coffee worth $400/kg that he wishes to mix with 20kg of coffee worth $700/kg to get a mixture that can be sold for $500/kg. How many kg of the cheaper coffee beans should he use?​

Answer:

-1116

Step-by-step explanation:

6(6) - 3(-4)(-4)(6)(4)

-1116

Answer:

-252

Step-by-step explanation:

6(6)-3x-4x6x-4

Answer:

-3m+14 that should be the answer

Answer:

-3m+14 that should be the answer

Step-by-step explanation:

Answer:

The vertex of this parabola is [tex](-2,-11)[/tex]

Step-by-step explanation:

One way of finding the x-coordinate of the vertex of a parabola is by using the equation [tex]-\frac{b}{2a}[/tex]

From the function [tex]f(x)=x^2+4x-7[/tex], we can see that

[tex]a=1\\b=4\\c=-7[/tex]

This means that

[tex]-\frac{b}{2a}=-\frac{4}{2(1)} =-2[/tex]

So, the x-value of the vertex is -2. Now, we can plug this x-value into the function to find the y-coordinate of the point.

[tex]f(x)=x^2+4x-7\\\\f(-2)=(-2)^2+4(-2)-7\\\\f(-2)= 4-8-7\\\\f(-2)=-11[/tex]

Thus, the vertex of this parabola is [tex](-2,-11)[/tex]

Answer:

250%

Step-by-step explanation:

1.0 = 100%

2.0 = 200%

0.5 = 50%

Therefore, 2.5 = 250%

If you doubled an unknown number and subtract 1 and then square the answer to get 64, the unknown number is 4.5.

Given the following data:

To find an unknown number:

In this exercise, you're required to solve for an unknown number while performing some arithmetic operations such as multiplication, subtraction and square.

Translating the word problem into an algebraic expression, we have;

Doubling the unknown number, we would multiply by 2:

[tex]2n[/tex]

Subtracting 1 from the above and squaring, we have:

[tex](2n-1)^2 = 64\\\\2n-1=8\\\\2n =8+1\\\\2n=9\\\\n=\frac{9}{2}[/tex]

n = 4.5

Read more: https://brainly.com/question/13282374

Answer:

45

Step-by-step explanation:

(3)(7)−(6)(−4)

=21−(6)(−4)

=21−(−24)

=45

Answer:

A) Kaden

B)Siaem

Step-by-step explanation:

the first number or part of a ratio is the numerator, and the second is the denominator, for part A 2 is the numerator and 3 is the denominator. the 30 is also the denominator so it would go on the bottom and x would be the numerator since we didn´t know the value of it. this also applies for Part B.

Hope it helps :)

Answer:

Smallest length side = 12 ft

Middle length side = 28 ft

Longest length side = 32 ft

Step-by-step explanation:

Perimeter of ∆ = sum of all its length sides

Thus, we are given that:

Perimeter = 72 ft

Let x represent the smallest length side. Therefore:

Smallest length side = x ft

Middle length side = (2x + 4) ft

Longest length side = (3x - 4) ft

Thus:

(2x + 4) + (3x - 4) + x = 72

Solve for x

2x + 4 + 3x - 4 + x = 72

Collect like terms

2x + 3x + x + 4 - 4 = 72

6x = 72

Divide both sides by 6

x = 72/6

x = 12

Find the length of all 3 sides by plugging in the value of x in each expression:

Smallest length side = x ft = 12 ft

Middle length side = (2x + 4) ft = (2(12) + 4) = 24 + 4 = 28 ft

Longest length side = (3x - 4) ft = (3(12) - 4) = (36 - 4) = 32 ft

Answer:

Part 1:

The solution set of the system of equations is x = 1, y = 1

Part 2:

The solution set is x = 1, y = 1

Part 3:

The similarity of the system of equations in Parts 1 and 2 is that they have the same solution set

The difference of the system of equations in Parts 1 and 2 is that they are arranged differently

Step-by-step explanation:

Part 1:

The system of equation is given as follows;

2·x + y = 3...(1)

x = 2·y - 1...(2)

The above system of equations can be written in terms of the variable, y, as follows;

For equation (1), we have;

y = 3 - 2·x

For equation (2), we have;

y = (x + 1)/2

From the attached graph created with Microsoft Excel, we have;

The solution set (the point of intersection) of the system of equations is x = 1, y = 1

To accurately find the common solution, we have;

(x + 1)/2 = 3 - 2·x

x + 1 = 2·(3 - 2·x) = 6 - 4·x

x + 1 = 6 - 4·x

x + 4·x = 6 - 1

5·x = 5

x = 5/5 = 1

x = 1

Therefore, y = 3 - 2·x = 3 - 2× 1 = 1, at the common solution

Part 2:

y = -2x + 3

x - 2y = -1

∴ x = 2y -1

y = -2(2y -1) + 3

y = -4y + 2 + 3

5y = 5

y = 1

x = 2y - 1 = 2 - 1 = 1

x = 1

The solution set is x = 1, y = 1

Part 3

The system of equations are similar in terms of their solution

The system of equations are different in terms of their arrangement

Answer:

put the first answerer as brainliest, i just saw no one else has answered this.

Step-by-step explanation:

Answer:

x=60

Step-by-step explanation:

the angle size is half the size of 120 if you draw it out with protractor it will come out to be an angle measurement of 60

Answer:

mean is the average of the numbers (add them all up then divided by how many number there are)

mode is the number that comes out the most often

range is the largest number minus the smallest

median is the middle number when they are lined up from greatest to the least  (unless there's two)

Step-by-step explanation:

a song we learned in 5th grade XD that i still remember somehow

Answer:

This is what mean, median, and mode are-

Step-by-step explanation:

Mean is when you add all the number there are and divide by the total of numbers that you added together like this for example.

(1+2+3+4+5 = 15) THEN (15 / 5 = 3) THE MEAN IS 3.

Median is when you group the number from smallest to biggest and keep on crossing out both side of the number till you reach the middle.

(1, 2, 3, 4, 5) YOUR MEDIAN SHOULD BE 3 CAUSE IF YOU CROSS OUT 1,5 THEN 2,4 YOU WILL GET 3.

Mode are the most common number that you will see. You could have no mode or many mode too.

(1, 2, 2, 3, 4, 5) THERE IS ONLY ONE MODE HERE WHICH IS 2.

(1, 2, 3, 4, 5) THERE IS NO MODE CAUSE THERE IS NO REPEATING NUMBER.

(1, 2, 3, 4, 4, 5, 5) THERE IS TWO MODE NOW WHICH ARE 4 AND 5.

HOPE THIS HELPS!

Answer:

dehydration

Step-by-step explanation:

Diurectics causes an increase in amount of urine. I.e it makes you pee more.

If you urinate too much, you run the risk of dehydration because you lose too much water.

Answer:

#8. M = -8/9

#9. M = 3/5

Answer:

The answer is 1800

Step-by-step explanation

9% of 20,000 = 1800

Answer:

slope = 2

Step-by-step explanation:

-8 - -6 / -9 - -8 = 2

Answer:

[tex]\frac{2}{1}[/tex] which is just 2

Step-by-step explanation:

slope = [tex]\frac{y2 - y1}{x2 - x1}[/tex]

So plug the numbers in, now it should look like [tex]\frac{-6 - (-8)}{-8 - (-9)}[/tex]

-6 - (-8) = 2

-8 - (-9) = 1

So the slope is [tex]\frac{2}{1}[/tex]

Answer:

X = 35

Step-by-step explanation:

5 + 100 = 7x + 30

5x + 100 - 100 = 7x + 30 - 100

5x = 7x - 70

5x - 7x = 7x - 70 - 7x

-2x = -70

-2x/-2 = -70/-2

x = 35

Answer:

w^2+15w+54

Step-by-step explanation:

(w+9)(w+6)

w^2+9w+6w+54

w^2+15w+54

Answer:

w^2 + 15w + 54

Step-by-step explanation:

Answer:

undefined

Step-by-step explanation:

This is a vertical line and cannot be written in any form.

Answer:

A

Step-by-step explanation:

It's on the photo. Kkkkk

Answer:

A. 34in

Step-by-step explanation:

If James completely covered a square poster board using 68.2 inches with an exponent of 2, the the total perimeter of the square will be;

P = 2(68.2) = 136.4in

Since the perimeter of a square is expressed as:

P = 4L

136.4 = 4L

L = 136.4/4

L = 34.1in

Hence the measurement of one side of the square poster is closest to 34in

Answer:

-1/2

Step-by-step explanation:

You go down once and over two because it’s down and left you have to put it as a negative

Answer: C.   The drone is on the ground at 0 and 4 seconds.

you have a blessed thanksgiveing

Answer:

sorry i didn't understand

9514 1404 393

Answer:

  Y = 6.5°

Step-by-step explanation:

We know that tan(x) = cot(90°-x), so we could rewrite the equation as ...

  cot(90 -(3Y+32)) = cot(Y+32)

  58 -3Y = Y +32

  26 = 4Y

  6.5 = Y

One solution is Y = 6.5°.

_____

Additional solutions are found at integral multiples of 45° added to this value.

Answer:

a

Step-by-step explanation:

I think its A sorry if u get it wrong

Answer:12

Step-by-step explanation: formula a(a+b)=c(c)

4(4+x)=8(8)

16+4x=64

4x=48

X=12

Answer:

6

Step-by-step explanation:

I took the test

Answer:

[tex]6 \frac{3}{7}[/tex]

Step-by-step explanation:

Multiply [tex]3 \frac{4}{7}[/tex] by [tex]1 \frac{4}{5}[/tex] and you get 6 3/7

Ok What is the Question?

Answer:

3n-1

Step-by-step explanation:

(4n+4) - (n+5)

i sperate it to be

4n-n and 4-5

so

3n-1 should be it