In a certain school 75% of the students in first year chemistry have had algebra if there are 300 students in first year chemistry how many of them have had algebra?

Answer: Leia pays more to fly from the UK to Australia

Step-by-step explanation:

We have two persons, Andy and Leila; both travel from UK to Australia but in different ways:

For Andy:

-He first flies from UK to Japan and the cost of the ticket is [tex]\£ 554[/tex]

-Then he flies from Japan to Australia and the cost of the ticket is [tex]70140 Yen[/tex]

So, the cost of Andy's trip is:

[tex]\£ 554+70140 Yen[/tex] (1)

Taking into account that we have to use the same units to sum two quantities, we have to convert the Yens to [tex]\£[/tex]; knowing that [tex]\£ 1=140 Yen[/tex]:

[tex]70140 Yen \frac{\£ 1}{140 Yen}=\£501[/tex]

Then, (1) is rewritten as:

[tex]\£ 554+\£501=\£1055[/tex] (2) This is the total cost of Andy's trip

For Leila:

She flies directly from UK to Australia and the cost of her ticket is [tex]\$ 1860[/tex] (Australian dollars)

Taking into account that we have the price of Andy's trip in [tex]\£[/tex], we have to convert the Australian dollars to [tex]\£[/tex], in order to compare.

So, knowing that [tex]\$ 1=\£ 0.62[/tex] we have:

[tex]\$ 1860 \frac{\£ 0.62}{\$ 1}=\£1153.2[/tex] (3) This is the total cost of Leila's trip

Hence, comparing (2) and (3) we can see that Leila paid more to fly from UK to Australia.

Answer:12 x 9

Step-by-step explanation: 600 x 2/100 = 1200/100 = 12

450 x 2/100 = 900/100 = 9

Remember that 100km = 2 units

Draw a rectangle with the dimensions given (600 km by 450 km) to recreate Joel's map of Colorado on the grid. Make sure to align the rectangle's longer side with latitude (horizontal) and shorter side with longitude (vertical).

To recreate Joel's map of Colorado on the grid, we can simply consider the dimensions given of 600 km by 450 km. Draw a rectangle on the grid with one side being 600 units (representing km) and the other being 450 units (representing km). This rectangle will represent Colorado, and you can label it accordingly. Keep in mind that since it's a map, the orientation of Colorado's longer side (600 km) should align with the latitude and shorter side (450 km) should align with the longitude, assuming that the west-east direction is taken as horizontal.

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Answers are rectangle, rhombus and parallelogram respectively.

Step-by-step explanation:

Answer:

0.00360.

Step-by-step explanation:

Leading zeros in a number are not significant, so your number has four significant figures.

You must drop the 7 from 0.003597.

Since 7 is greater than 5, you must add 1 to the 9

[tex]\begin{array}{r|l}1& \\0.00359 &\text{7}\!\!\!\!\diagup \\\mathbf{0.00360} & \\\end{array}[/tex]

Final answer:

To express 0.003597 to three significant figures, round to 0.00360; in exponential notation, this is 3.60 × 10^-3.

Explanation:

To express 0.003597 to three significant figures, we identify the first non-zero digit as the starting point of significant figures.

We count three digits from there, which gives us 0.00360 when rounding up the seventh which is in the fourth place after the decimal. In exponential notation, this would be 3.60 × 10-3.

If x is doubled, then y is also doubled

Solution:

Given that,

Two quantities x and y are directly proportional

For a direct proportion,

If x increases then y increases

If x decreases then y decreases

Given that, x is doubled

Then y will also gets doubled

Also,

x and y are directly proportional

[tex]y \propto x\\\\y = kx[/tex]

Where k is the constant of proportionality

If x is doubled then,

y = k(2x)

y = 2(kx)

Thus y is also doubled

Answer:

its doubled

Step-by-step explanation:

if its doubled then its doubled

Answer:

[tex]Area\ of\ walkway=4x^2+56x\ meter^2[/tex]

Step-by-step explanation:

[tex]Length\ of\ garden=16\ meters\\\\Width\ of\ garden=12\ meters\\\\Width\ of\ walkway=x\ meters\\\\Now\ Length\ of\ new\ rectangular=16+x+x\ \ \ \ \ (as\ x\ meter\ walkway\ increased\ both\ the\ sides)\\\\Now\ width\ of\ new\ rectangular=12+x+x\ \ \ \ \ (as\ x\ meter\ walkway\ increased\ both\ the\ sides)\\\\Area\ of\ walkway=Area\ of\ new\ rectangular-Area\ of\ rectangular\\\\Area\ of\ rectangle=length\times width\\\\Area\ of\ walkway=(16+2x)\times (12+2x)-16\times 12[/tex][tex]Area\ of\ walkway=16\times 12+2x\times 12+16\times 2x+2x\times 2x-16\times 12\\\\Area\ of\ walkway=4x^2+56x\ meter^2[/tex]

it is the X+3 and (x+.2)

Answer:

  10 miles

Step-by-step explanation:

Let m represent the number of miles Kayla runs. We want to find m such that ...

  0.50m = 5.00

Divide by the coefficient of m:

  m = 5.00/0.50 = 10

Kayla has to run 10 miles to get the same donation from both parents.

Answer:

!0 miles

Step-by-step explanation:

Answer:

infinitely many solutions

Step-by-step explanation:

look at picture

Answer:

80

Step-by-step explanation:

40 times 2=80

Have a nice day!!!

Answer:

40=10x+ 6y

Step-by-step explanation:

x representing pounds of turkey

y representing pounds of cheese

Answer

11          

 —— = 0.27500

 40          

Answer: 11/40

Step-by-step explanation: 2/5 - 1/8 have to have a common denominator. The common denominator will be 40 so 2/5 = 16/40 1/8 = 5/40. 16-5=11

A possible number of marbles for this situation is:

Red = 13

Blue = 3

Yellow = 2

How many of each color marble could Jack have?

Let's define the variables:

R = number of red marbles.

B = number of blue marbles.

Y = yellow marbles.

Then we can write:

R = B + 10

Y < B

So we have only these two conditions, now let's find possible values.

If we define B = 3, then:

R = 3 + 10 = 13

Y < 3

Then Y can be 2.

So a possible value is:

Red = 13

Blue = 3

Yellow = 2

Final answer:

The number of each color marble Jack has can be determined by setting the number of blue marbles as a variable. Red marbles are ten more than blue, and yellow marbles are fewer than blue. Specific combinations are possible as long as these conditions are met.

Explanation:

Jack has some marbles. He has ten more red marbles than blue marbles and fewer yellow marbles than blue marbles. To determine how many of each color marble Jack could have, consider blue marbles as the variable x. Then, the number of red marbles would be x + 10 and the number of yellow marbles would be less than x.

Here are a few possible combinations:

If Jack has 1 blue marble, he cannot have 10 more red marbles and fewer yellow marbles as this would result in a negative number of yellow marbles which is not possible.

If Jack has 2 blue marbles, then he would have 12 red marbles (x + 10), and potentially 1 yellow marble since it needs to be less than the number of blue marbles.

If Jack has 3 blue marbles, he would have 13 red marbles, and it could be 1 or 2 yellow marbles.

Thus, the compositions of marbles are dependent on the number of blue marbles Jack has. As long as the number of red marbles is ten more than blue and the yellow marbles are fewer than blue, the condition is satisfied.

Answer:

E) (-4, -3)

Step-by-step explanation:

To use elimination, you need to have one variable in both equations that have the same coefficient. (The coefficient is the number attached to the variable). Both equations have "7y".

The way elimination works is by eliminating one of the variables first. Decide how (-7y) and (-7y) can cancel out and become 0. You can either add or subtract.

(-7y) - (-7y)        Try subtracting

= (-7y) + 7y

= 0

Based on this, we should subtract the whole equations.

Set up the equations like normal subtraction. Then, subtract each of the terms that have the same variable.

.   4x - 7y = 5

-   9x - 7y = -15       Do 4x - 9x = -5x.    -7y - (-7y) = 0.      5 - (-15) = 20.

.    -5x - 0 = 20       "y" cancelled out

.          -5x = 20          Isolate 'x'

.      -5x/-5 = 20/-5       Divide both sides by -5

.              x = -4          Solved x-coordinate

Substitute 'x' for -4 in any of the equations. Then simplify and isolate "y" to solve for the y-coordinate.

4x - 7y = 5

4(-4) - 7y = 5         Simplify the multiplication.

-16 - 7y = 5         Start isolating 'y' now

-16 + 16 - 7y = 5 + 16         Add 16 to both sides. Left side cancels out 16

-7y = 5 + 16         Solved right side by adding

-7y = 21

-7y/-7 = 21/-7         Divide both sides by -7

y = -3              Solved y-coordinate

Therefore the answer is (-4, -3).

To determine the weight of the box Kiva's father carries, we calculate 21 pounds as 35% of the father's box weight and find it to be 60 pounds.

Kiva's family is moving and he carries a 21-pound box which is 65% lighter than the box his father carries. To find the weight of the box that Kiva's father carries, we need to determine what weight would be 65% lighter by the smaller box's weight. Let's denote the father's box weight as F. We know that 21 pounds is equal to 35% of the father's box's weight because 100% - 65% = 35%. So, we have:

Therefore, the weight of the box that Kiva's father carries is 60 pounds.

Answer:

I think it's 100

Step-by-step explanation:

133 + 86 + 41 = 260

360 - 260 = 100

The answer is 130. I did the quiz and got it right.

I really hope this ends up helping you. You got this!

The measure of ∠GDC is 130° as it is calculated by subtracting the arc GEC's measure from the total degrees in a circle, which is 360°.

If the measure of arc GEC in circle D is 230°, to find the measure of ∠GDC,

we recall that the measure of an arc in a circle is equal to the measure of the central angle that intercepts that arc. Since ∠GDC is a central angle intercepting arc GEC, its measure must also be 230°.

However, because we are looking for the measure of the angle inside the circle, we must subtract this angle from the total 360° of the circle.

So,
360° - 230°

= 130°

So, the measure of ∠GDC is 130°.

Answer:

Its D on e2020

Step-by-step explanation:

trust me

m<1 = m<4 by vertical  angles theorem

3x + 10 = 4x - 15

-1x = -25

x = 25

m<1 + m<7 = 180 if parallel alternate interior angles supplementary

3x + 10 + m<7 = 180

3(25) + 10 + m<7 = 180

75 + m<7 = 180

m<7 = 105°

Hope this helps! ;)

Answer:

6, 7 or 8 oranges

Step-by-step explanation:

Answer:

14 in.

Step-by-step explanation:

well to start we have to know the relationships between angles, legs and the hypotenuse.

a: adjacent

o: opposite

h: hypotenuse

sin α = o/h

cos α= a/h

tan α = o/a

now as we know that the triangle that is formed has a right angle of 90 degrees, and two other angles that are 30 and 60 degrees.

We can know this by the properties of the hexagons

hexagon is formed by 6 equilateral triangles

equilateral triangles have 3 angles of 60 degrees

the triangle of the image is half of one of those triangles so it will have the upper angle of 30 and the other of 60

Now if we take the angle of 30 degrees and apply the following formula

sin α = o/h

cos 30 = a/h

0.866 = 12/h

h = 12/0.866

h = 13.8564

h = c

the nearest number is 14

Answer:14in on edg.

Step-by-step explanation:

Yo sup??

let the lenght of one side of the hexagon be y

total perimeter=sum of lenght of all sides=6y

But

perimeter=42x-24

Therefore

6y=42x-24

y=7x-4

Hence the equation of one side is 7x-4

Hope this helps

The answer is 7x-4.

Hope this helped

Answer:

133.33 dollars bc when u divide 133.33 form 55% it's 60 dollars.

Answer:

18.1621622 or 18.162

Step-by-step explanation:

Answer:

Attached in image below!

The pool manager pays $54 for the chlorine tablets and $6.60 for the pH test kit.

The pool manager pays $54 for the bucket of chlorine tablets and $6.60 for the pH test kit after applying the 40% discount.

Therefore, the pool manager pays $54 for the chlorine tablets and $6.60 for the pH test kit.

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The pool manager pays the cost of  $54 for the chlorine tablets and $6.60 for the pH test kit.

The calculation you're looking to perform is a simple example of a percentage discount on a sum of money. To figure out how much the pool manager pays for each item, you have to first calculate the total cost of the items. The total cost of both the bucket of chlorine tablets ($90) and the pH test kit ($11) is $101.

A 40% discount on the total cost is then calculated by taking 40% of $101, which is $40.40. This discount is subtracted from the total cost (101-40.40), leaving the pool manager to pay $60.60. To determine the cost of each item after the discount, we assume that the discount was applied equally to both items.

This means that the cost price for each the bucket of chlorine tablets and pH test kit, after the discount, would be $54 and $6.60 respectively.

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Answer:

Step-by-step explanation:

green for 20 seconds

yellow for 5 seconds

red for 25 seconds

total of 50 seconds

P(green) = 20/50 = 2/5

Answer:

[tex] \cos L = \dfrac{4}{5} [/tex]

Step-by-step explanation:

The right angle is angle K. KL and JK are legs. JL is the hypotenuse.

For angle L, KL is the adjacent leg.

In general, for acute angle A of a right triangle,

[tex] \cos A = \dfrac{adjacent~leg}{hypotenuse} [/tex]

In this case,

[tex] \cos L = \dfrac{adj~leg}{hyp} [/tex]

[tex] \cos L = \dfrac{KL}{JL} [/tex]

[tex] \cos L = \dfrac{8}{10} [/tex]

[tex] \cos L = \dfrac{4}{5} [/tex]

Answer:

OPTION A

OPTION B

OPTION D

Step-by-step explanation:

Given that a bag of apples cost 'a' dollars.

A bag of oranges cost 'a + 2' dollars.

Therefore, one bag each of apples and oranges should cost: a + a + 2 dollars.

Since, Dorie buys 5 bags of apples and Oranges, it would have costed her:

5(a + a + 2)

= 5(2a + 2)

= 10a + 10

Hence, OPTION A, B and D are the correct answers.

Answer:

$50 and

$30

Step-by-step explanation:

Question 1. Principal = $500

Rate = 5%

Time = 2yesrs

Interest = PRT /100

= 500 x 5 x 2 /100

= 5000/100

= $50

Interest = PRT/100

Principal P =$500

Rate = 3%

Time = 2 years

Therefore, interest =

500 x 3 x 2 /100

= 3000/100

= $30