solve each system by substitution
2x+y=20
6x-5y=12

Answer:

(i) mean: 5.4 median: 5.5 mode: 8

(ii) mean: 4.6 median: 5 mode: 5

(iii) mean: 17.5 median: 4 mode: 4

Step-by-step explanation:

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Answer:

Step-by-step explanation:

Answer:

the fraction 3/12

Step-by-step explanation:

it is saying that x/12 = 1/4

x = 1 × 12 / 4

x = 12/ 4

x = 3

the fraction 3/12

Answer:

38

Step-by-step explanation:

Answer: 2, 3, 5

Step-by-step explanation: 6*6 is 6^2 and 6*6*6 is 6^3 and you can add the exponents, so the last one is 6^5.

Answer:

Triangular prism?

Step-by-step explanation:

I done this riddle before but I dont remember to cleary of what the answer is.

Answer:

since 7 and 11 are both rational, the sum and difference are rational

Step-by-step explanation:

did it on edge

Since 7 and 11 are both rational, the sum and difference are rational.

The answer is option A.

The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.

A system of equations is a collection of two or more equations with the same set of unknowns. In solving a system of equations, we try to find values for each of the unknowns that will satisfy every equation in the system.

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Answer:

Step-by-step explanation:

First question

1 solution

Second Question

Third question

There are 13 more stops to make.

Answer: 5000000

Step-by-step explanation:

if your asking how far apart are they from each other then that would be 47 m away from each other.

Hope this helps!!

Answer:

the answer is two

Step-by-step explanation:

i don't have one but i did the quiz and got it right

We need slope

Take any 2 points

Slope:-

[tex]\\ \tt\hookrightarrow m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\\ \tt\hookrightarrow m=\dfrac{6-3}{2-1}[/tex]

[tex]\\ \tt\hookrightarrow m=\dfrac{3}{1}[/tex]

[tex]\\ \tt\hookrightarrow m=3[/tex]

Answer:

1/4 of a can

Step-by-step explanation:

1 1/2÷2/3 = 1 / 4

1 1/2 divided by 1/3=1/2 so if we have 2 so it is

4 ÷ 4=1

16÷4=4

Step-by-step explanation:

3x/2 - 2 > 7

3x/2 > 9

3x > 18

x > 6

for the line graphic below it seems you need to calculate x.

please consider that both angles together must be 180°, as they represent the full rotation area around one point on one side of a line.

8x + (4x + 60) = 180

8x + 4x + 60 = 180

12x = 120

x = 10

Answer:

x + 17

Step-by-step explanation:

So a number 17 more than x is equal to x+17.   Hence “17 more than a number” written as an algebraic expression is “x+17”.

Answer:

using I= prt/100

p=7000-1120= 5880

1120=5880×r×2/100

112000=11760×r

r= 112000÷11760

r =9.52%

Answer:

3 pounds of turkey for $10.50

Step-by-step explanation:

1. 10.50/3 = 3.5 dollars per pound.

2. 6.25/.5 = 12.5 dollars per pound

Answer:

D   pi/4, 3pi/4

Step-by-step explanation:

Differentiate the function then equal it to zero and solve for the interval (see attached workings)

Answer:

a) is 60 percent and b) is 55 percent

Step-by-step explanation:

a) = 60 percent

First count up all the squares. That's 10 squares in total. Now count up all the squares that are shaded. That's 6. So the amount that's shaded is 6/10, but we need to find that in percentage, so we divide. 6 divided by 10 is 0.6, or 60 percent. The answer to a) is 60 percent.

b) = 55 percent

First count up all the squares. That's 20 squares in total. Now count up all the squares that are shaded. That's 11. So the amount that's shaded is 11/20, but we need to find that in percentage, so we divide. 11 divided by 20 is 0.55, or 55 percent. The answer to b) is 55 percent.

The Percentages of shaded portion are 60% and 55% for Grid A and Grid B respectively.

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word percent means per 100. It is represented by the symbol “%”

Given here: Grid A) 2 rows and 5 columns B) 4 rows and 5 columns

Thus total number of grids for Grid A) and Grid B) are 10 and 20 boxes respectively.

%Shaded portion (Grid A)= 6/10 ×100

                                          =60%

%Shaded portion (Grid B)=11/20×100

                                          =55%

Hence, The Percentages of shaded portion are 60% and 55% respectively.

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Answer:

1.44 meters

Step-by-step explanation:

0.048 * 30 = 1.44

Answer:

The writing isn't clear though hope it helps

Answer:

Divide y y by 1 1 . Move the negative in front of the fraction. Rewrite in slope-intercept form. Using the slope-intercept form, the slope is 45 .

Step-by-step explanation:

Hope this helps.

Answer:

X= - 10

Y=5

Step-by-step explanation:

First add the equations and x will be eliminated, then solve for y as a normal linear function, and the answer is 5.

Substitute thw y in any function, I substituted in the first one, and solved for x and got negative 10 as an answer.

Answer:

V = 66 cm³

Step-by-step explanation:

The volume (V) of the prism is calculated as

V = Ah ( A is the area of triangular end and h is perpendicular height )

A = [tex]\frac{1}{2}[/tex] × 3 × 4 = 6 cm² and h = 11

V = 6 × 11 = 66 cm³

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 4.25 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 4.25, so we can write it down as 100%=4.25.

4. We know, that x% equals 3.4 of the output value, so we can write it down as x%=3.4.

5. Now we have two simple equations:

1) 100%=4.25

2) x%=3.4

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=4.25/3.4

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 3.4 is what percent of 4.25

100%/x%=4.25/3.4

(100/x)*x=(4.25/3.4)*x       - we multiply both sides of the equation by x

100=1.25*x       - we divide both sides of the equation by (1.25) to get x

100/1.25=x

80=x

x=80

now we have:

3.4 is 80% of 4.25

BASICALLY 80%-

Answer:

12

Step-by-step explanation:

if I have 1 foot and I split it into 3 sections (1/3 of a sandwich) I would have 3 servings, because I have 4 feet I have to time 3 times 4, which equals 12

It sounds like you're given

[tex]5^{3b-1} = 5^{b-3}[/tex]

Since the bases on either side match (5), the exponents must be equal. So

3b - 1 = b - 3

Solve for b :

3b - b = -3 + 1

2b = -2

b = -1

The caption mentions there are 937 total known characters.

The pie chart says 26% of these characters are hobbits, so there are

0.26 × 937 ≈ 243.62 hobbits

so at least 243 hobbits.

If 74 of them are female, then they make up

74/243 ≈ 0.304527 ≈ 30.5%

of the total number of hobbits.