Determine which situation could be represented by the system of linear equations given below.

2x + 4y = 160
x + y = 50


A. Jane sells beaded bracelets for $2 each and beaded necklaces for $4 each. She sold 50 pieces of jewelry at the craft fair last weekend and made $160.

B. Kevin bought 2 pairs of jeans and 4 shirts at the mall. He spent $50. Another person bought 1 shirt and 1 pair of jeans for $160.

C. Two principals and four teachers donated a total of 160 cans of soup to the school can drive. The two biggest donors gave 50 cans between them.

D. An ice cream shop sells sundaes for $2 each and cones for $4 each. They made $50 over the course of 2 hours and sold a total of 160 items.

Answer:

[tex]Part = \frac{19}{20}[/tex]

[tex]Lessons = 23[/tex]

Step-by-step explanation:

Given:

[tex]Dancing\ Lessons = 24[/tex]

[tex]April = \frac{3}{4}[/tex]

[tex]May = \frac{1}{5}[/tex]

Required:

Determine the part she took

To solve this, we simply add up the part she took in April and May.

[tex]Part = \frac{3}{4} + \frac{1}{5}[/tex]

Take LCM

[tex]Part = \frac{15 + 4}{20}[/tex]

[tex]Part = \frac{19}{20}[/tex]

Hence, she took [tex]\frac{19}{20}[/tex] of the dancing lesson.

However, to calculate the number of lesson.

We have to multiply [tex]\frac{19}{20}[/tex] by the total dancing lessons.

[tex]Lessons = \frac{19}{20} * 24[/tex]

[tex]Lessons = \frac{19* 24}{20}[/tex]

[tex]Lessons = \frac{456}{20}[/tex]

[tex]Lessons = 22.8[/tex]

[tex]Lessons = 23[/tex] ---- Approximated

Answer:

C) 77

Step-by-step explanation:

77 times 2= 154

200-154= 46

Answer:

1

Step-by-step explanation:

you do the rise over run, so count how many boxes up it is from one point to the next, then put that over how many boxes to the right it is, and simplify.

ex: 1/1 = 1,    2/2 = 1,   3/3 = 1, etc.

Hope this helps!

Answer:

The answer is b=18/z

Step-by-step explanation:

Let's solve for b.

bz/2=9

Step 1: Divide both sides by z/2.

1/2bz/z/2=9/z/2

b=18/z

Answer:

b=18/z

The simplest form of the ratio of red to black balls is 4:3.

The ratio shows how many times one value is contained in another value.

Example:

There are 3 apples and 2 oranges in a basket.

The ratio of apples to oranges is 3:2 or 3/2.

We have,

Number of red balls = 16

Number of black balls = 12

The ratio of red to black balls.

= 16/12

= 4/3

Thus,

The ratio of red to black balls is 4:3.

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Answer:

1 1/2 meters

Step-by-step explanation:

Answer:

Earl runs 1.5 meters per second.

Step-by-step explanation:

90m/60sec = 1.5m/sec

Answer:

the missing value is 7

Step-by-step explanation:

Answer:

probably c. the one w cos(165) on the end

Step-by-step explanation:

hope this drawing helps at all~ looks a bit busted but yea

The value of expression is, [tex]|r-s|=\sqrt{284.5}=16.86[/tex]

If two vector r and s are present. Then magnitude of resultant of these two vectors are calculated by cosine formula.

               [tex]|r-s|^{2}=r^{2} +s^{2} +2|r||s|cos\theta[/tex]

Where [tex]\theta[/tex] is angle between both vectors.

A diagram is attached below.

               [tex]|r-s|^{2}=6^{2} +11^{2} +2*6*11*cos15\\\\|r-s|^{2}=36+121+127.5\\\\|r-s|^{2}=284.5\\\\|r-s|=\sqrt{284.5}=16.86[/tex]

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Answer: 6 + 8

Step-by-step Explanation: When you're adding and subtracting positives and negatives and you see a minus a negative in a problem, you can change it to plus a positive.

So 6 - (-8) can be thought of as 6 + (+8).

Answer:6+8

Step-by-step explanation:

Answer:

8%

Step-by-step explanation:

Given the following data;

Experimental value = 36 inches

Theoretical value = 33 inches

Percent error can be defined as a measure of the extent to which an experimental value differs from the theoretical value.

Mathematically, it is given by this expression;

[tex] Percent \; error = \frac {experimental \;value - theoretical \; value}{ theoretical \;value} *100[/tex]

Substituting into the equation, we have;

[tex] Percent \; error = \frac {33 - 36}{ 36} *100[/tex]

Note: we would ignore the negative sign.

[tex] Percent \; error = \frac {3}{ 36} *100[/tex]

[tex] Percent \; error = 0.833 *100[/tex]

Percent error = 8.33 ≈ 8%

Answer 4000+1600= 5600

Step-by-step explanation:

The 10% is $400. 400 times 4 is 1600. So to find the total, its 5600. Mark brainliest if this helped you

Answer:

Outlier!! I know it sounds like a cat poster but it's true

Step-by-step explanation:

Answer:

median

Step-by-step explanation:

it means average which the average of the set will give you 133

Answer:

answer is 1/3 so B

Step-by-step explanation:

Answer:

Step-by-step explanation:

A. (5,-4)

The vertex of the graph of the function is (5,-4).

The answer is option A.

A function has an input and an output.

A function can be one-to-one or onto one.

It simply indicated the relationships between the input and the output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

To find the vertex of the function y = x² - 10x + 21,

We can use the formula:

x = -b/2a

where a is the coefficient of the x² term, b is the coefficient of the x term, and x is the x-coordinate of the vertex.

In this case,

a = 1 and b = -10, so:

x = -(-10)/(2 x 1) = 5

To find the y-coordinate of the vertex, we can substitute x = 5 into the function:

y = (5)² - 10(5) + 21 = -4

Therefore,

The vertex of the graph of the function is (5,-4).

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Answer:

Yes

Step-by-step explanation:

0.8x + 3 = 1.8x

3 = 1.8x - 0.8x

x = 3

And:

2x = 6

dividing both sides by 2:

x = 3.

hence the two equations are equivalent since they give the same answer.

Answer:

Yes Borman is correct.

Step-by-step explanation:

Borman moved the decimal point 2 spaces to the left which gave her 0.153

Then she multiplied that by $148,000 to get 15.3% of it which would give her $22,644 so therefore, she is correct.

Answer:

Slope is -5/3, the y intercept is 5

Step-by-step explanation:

If you want to find cordinates you first have to solve the equation so that it is in the form mx+b=y

solve for y

5x+3y=15

-5x -5x

3y =-5x+15

3y/3 = -5x/3+15/3

y=-5/3x+5

or -5/3x+5=y

Now you know that the slope is -5/3 and the y intercept is 5

Start for 5 on the cordinate plain and go down 5 since it is negative and go to the right 3.

after you get to the bottom right of the graph you go back to 5 and just do the exact opposite of what you did above.

so go up 5 and go to the left 3 and continue until you get to the top left of the graph.

Answer:

20

Step-by-step explanation:

Answer:

3 gallons = 12 ounces

12 x 3 = 36 ounces

Answer:

63

Step-by-step explanation:3(3)(7)=63

Answer: 3 x 3 x 7 = 63

Step-by-step explanation: I am not sure if this is what you are asking but when a number and a variable and next to each other without any spaces it means that you should multiply them, so, 3 x m is just 3 x 3. Expanding on this, if 3 x 3 x n is equal to 3 x 3 x 7 then you can just multiply 3, 3, and 7 for a total of 63.

Answer:

f(x) reflected across the x-axis is -f(x)

Step-by-step explanation:

so aka

O (x,y) → (x, -y)

Answer:

3

Step-by-step explanation:

equate the two together to get the value of x

Answer:

The answer would be 10.72

Step-by-step

You already have two side lengths so you use those to find the 3rd length

[tex]A^{2}[/tex]+[tex]B^{2}=C^{2}[/tex]

[tex]A^{2}+9^{2} =14^{2}[/tex]

[tex]A+81=196[/tex]

196-81=115

[tex]\sqrt{115[/tex]

10.72

Answer:

I believe it's A

Step-by-step explanation:

(^-^) Hope this helps!

Answer:

For every 2 bills, Dino has 7 coins.

Step-by-step explanation: