Please help me with this homework

Answer:

van=18

bus=59

Step-by-step explanation:

Let v=van & b=bus

1v+6b=372

1v=372-6b

4v+12b=780

Lets divide by 4

1v+3b=195

then

1v=195-3b

substitute in first expression

372-6b=195-3b

simplify

177=3b

b=59

then substitute

1v=195-3(59)

1V=18

Answer:

van=18

bus=59

Step-by-step explanation:

Let v=van & b=bus

1v+6b=372

1v=372-6b

4v+12b=780

Lets divide by 4

1v+3b=195

then

1v=195-3b

substitute in first expression

372-6b=195-3b

simplify

177=3b

b=59

then substitute

1v=195-3(59)

1V=18

===============================================

Explanation:

Think of the first 3 as 3.0

The exponent -3 tells us to move the decimal point three spaces to the left

So the 3.0 turns into 0.003

We can say [tex]3.0 \times 10^{-3} = 0.003[/tex]

--------------

Other examples:

[tex]7.2 \times 10^{-2} = 0.072\\\\5.18 \times 10^{-1} = 0.518\\\\6.4 \times 10^{3} = 6400\\\\[/tex]

The negative exponent means "move that many spaces to the left", while the positive exponent has us move the decimal point that many spaces to the right.

Answer: (-5,-5) --> (-x,-y)

Step-by-step explanation:

90 degree rotation: (-y,x)

180 degree rotation: (-x,-y)

270 degree rotation: (y,-x)  

Answer:

5 miles per minute

Step-by-step explanation:

20/4 = 5miles

5 miles / minute

Answer:

102 is the answer

Step-by-step explanation:

i hope I'm correct

Answer:

4th one is the right answer.

| x | -2 | 1 | 2 | 3 |

| y | -6 | 3| 6 | 9 |

Step-by-step explanation:

The x and y relationship is in the form y=kx and the graph starts from the origin.

Therefore the graph represents a proportional relationship which holds a equation y=x/3, where k=1/3.

Answer:

A=54

Step-by-step explanation:

A=hb/2

h=12 b=9

12x9=108

108/2

54 Area=54

Step-by-step explanation:

Given data

let adults be x

and student be y

so

6x+15y= 48-----------1

and

8x+7=38-----------2

solve eqn 1 and 2

6x+15y= 48-----------1X 8

8x+7=38-----------2X 6

48x

+15y= 40

48x+7y= 38

subtract

8y=2

y= 2/8

y= 1/4

y= $0.25

from 8x+7=38

put y= 0.25

8x+7(0.25)=38

8x+1.75= 38

8x=38-1.75

8x=36.25

x=36.25/8

x=$4.5

Answer:

$4.2

Step-by-step explanation:

1. 12%=0.12

2. 0.12 of $35 = 0.12 × $35

3. = $4.2

Answer:hope this helps

Thus, it takes 560 1/3 inch cubes to fill a box with width 2 2/3 inches, length 3 1/3 inches, and height 2 1/3 inches.

Step-by-step explanation:

Answer:

a/6

Step-by-step explanation:

Hannah has a total of "a" stickers.

Then, she divides the stickers into 6 envelopes, we can think of the envelopes as "groups".

This is what is called a quotient, and it is written as:

a/6

This is the number of groups of 6 elements of a, and in this case, represents the number of stickers that we will have in each one of the 6 envelopes.

Answer:

See below

Step-by-step explanation:

With regards to the above, since 2hours was spent yesterday , and 4 hours today, the percentage of the increase would be 200%

The reason being that since double of the hours spent yesterday on homework were spent today, hence 200%

Answer:

The small box contains 21 cans

Step-by-step explanation:

Represent the small box with S and the large with L.

For Estelle:

[tex]3L + 5S = 170[/tex]

For the boy:

[tex]4L + 4S = 184[/tex]

Required

Determine the cans in the small box

[tex]3L + 5S = 170[/tex] --- (1)

[tex]4L + 4S = 184[/tex] --- (2)

Divide (2) through by 4

[tex]L + S = 46[/tex]

Make L the subject

[tex]L = 46 -S[/tex]

Substitute 46 - S for L in (1)

[tex]3L + 5S = 170[/tex]

[tex]3(46 - S) + 5S = 170[/tex]

Open bracket

[tex]128 - 3S + 5S = 170[/tex]

[tex]128 + 2S = 170[/tex]

Collect Like Terms

[tex]2S = 170-128[/tex]

[tex]2S = 42[/tex]

Divide both sides by 2

[tex]S = 21[/tex]

Hence, the small box contains 21 cans

Answer:

x^2 + 8x+ 16

Step-by-step explanation:

Answer:

it's answer is 3x - 3

y + x - 8 + 8x + 4 = 12x - 7

y + 9x - 4 = 12 x - 7

y = 12x -9x - 7 +4

y = 3x - 3

hope it helps you

Answer:

[tex]\Large \boxed{\sf 3x-3}[/tex]

Step-by-step explanation:

Perimeter is sum of all sides

Subtract both given sides from perimeter to get the missing side

[tex](12x-7)-( \ (x-8)+(8x+4) \ )=3x-3[/tex]

Answer:

X= R +88

Step-by-step explanation:

X for total peppers

Answer:

$4026.52

Step-by-step explanation:

Given data

rate= 5%

time= 3years

A=$4630.50

P=?

we know that

A=P(1+rt)

$4630.50=P(1+0.05*3)

$4630.50=P(1+0.15)

$4630.50=P(1.15)

P=4630.50/1.15

P=$4026.52

The intitial amount is $4026.52

Answer:

f(x) = 29

Step-by-step explanation:

f(x)=23-(3x0)-(2X0)+6

f(x)=23+6

f(x)=29

Answer:

Step-by-step explanation:

1= 2/3

2=5/6

3=21/40

4= 2 11/20

5= 1 1/3

6=5/6

7=1 1/2

8=9/10

9= 5 1/6

10= 2 1/2

Answer:

100 will have to be added to both sides to complete the square

Step-by-step explanation:

Given:

x^2+20x+28=0

x² + 20x + 28 = 0

x² + 20x = -28

Using completing the square method of solving quadratic equation

Find the square of half of the coefficient of x

Coefficient of x = 20

Half of the coefficient of x = 20/2

= 10

Square of the half of the coefficient of x = 10²

= 100

Add the square of the half of the coefficient of x to both sides of the equation

x² + 20x = -28

x² + 20x + 100 = -28 + 100

(x + 10)² = 72

Answer:

(x + 3/2)^2 = 121/4

Step-by-step explanation:

khan academy gave me the answer. trust me bro.

At the specific domain x = 0. Larger means that graph is above another graph.

At x = 0, we can see that function f covers the function g. Therefore, function f is larger.

This is the same as first question. Look at x = - 3. Notice that the graph of function g is above graph of function f at x = - 3. Therefore function g is larger.

Both graphs have intercepts to each others. Look at both graphs and you will see that f(x)=g(x) when x = -2,2

[tex] \large \boxed {1. \: f(0)} \\ \large \boxed {2. \: g( - 3)} \\ \large \boxed {3. \: x = -2,2}[/tex]

Answer:

Please check the explanation.

Step-by-step explanation:

Given the graph of a function f and g.

Part a)

From the graph, it is clear that:

at x = 0, the value of y of function f is 3.

i.e. f(0) = 3

and

at x = 0, the value of y of function g is 0.5

i.e. g(0) = 0.5

Conclusion:

f(0) = 3

g(0) = 0.5

Therefore,

Part b)

From the graph, it is clear that:

at x = -3, the value of y of function f is -1.

i.e. f(-3) = -1

and

at x = -3, the value of y of function g is 2

i.e. g(-3) = 2

Conclusion:

f(-3) = -1

g(-3) = 2

Therefore,

Part c)

From the graph, it is clear that at x = 2 and x = -2, both the graphs meet.

From the graph it is clear that:

In other words, both graphs are equal at x = 2 and x = -2.

i.e.

f(x) = g(x) at x = 2 and x = -2

Answer:

14.8 pounds

Step-by-step explanation:

Here, we want to get the actual value made of fat from the body weight

What we have to do here is to multiply the percentage by the body weight

Mathematically, we have this as;

18.8% of 127 pounds

= 18.8/100 * 127 = 14.80 pounds

Answer:

Nonproportional

Step-by-step explanation:

Hope This Helps

Answer:

umm... i belive yes.

Step-by-step explanation:

this is beacuse..

800 opposite wold be -800 right

and then the opposite of -800 wold be 800

so 800 is equal to 800 cus ya

so yes i belve that this is true.

Answer its rhombus

Step-by-step explanation: i took the test

The quadrilateral formed by the taping together of two equilateral

triangles is a rhombus.

The given types of triangles that form the quadrilateral are equilateral

triangles.

Given that the triangles have congruent side lengths, we have;

1) The side lengths of the quadrilateral formed are equal.

2) A pair opposite angles of the quadrilateral formed are equal to the interior angle of an equilateral triangle which is 60°.

3) The other pair of opposite angles are also equal to 60° + 60° = 120°.

The altitude of an equilateral triangle is perpendicular to the base.

Which gives;

4) The diagonals bisect each other at right angles.

Therefore;

The adjacent angles are supplementary

Which gives;

5) The opposite sides are parallel.

The above properties are the properties of a rhombus

Therefore;

Learn more about rhombus here:

https://brainly.com/question/927171

Answer:

8,000

Step-by-step explanation: