I bought 10 shirts. Some were R4 and some were R4,50. If the total cost was R43,50. How many of each type did I buy?

Answer:

the correct answer is D 175

Answer:

[tex]y=-2x-15[/tex]

Step-by-step explanation:

[tex]y=mx+b[/tex].

m is the slope of the line. To find it we can do [tex]\frac{dy}{dx}[/tex] which is the difference between the y-coordinates divided by the difference between the x-coordinates.

So: [tex]\frac{dy}{dx} =\frac{-9-(-3)}{-3-(-6)} =\frac{-6}{3} =-2[/tex]. Now we have the slope, let's input a set of coordinates into the equation so that we can find the constant [tex]b[/tex].

[tex]-9=-2(-3)+b[/tex]

[tex]b=-15[/tex] - Re-arranging to get b

Now re-write the equation as we have the constants.

[tex]y=-2x-15[/tex]

Answer:

D

Step-by-step explanation:

The horizontal cross-sections of the prisms which is at same height as the cone should have same area.

Therefore Option D is the answer.

A cone is a three dimensional figure that has a circular horizontal structure ,  and vertically tapering up till a point.

It is given that

A Pyramid and a cone both have same volume.

Height of cone is same as Height of Pyramid .

Volume of cone = (1/3)πr²h

Volume of a pyramid =  Area of base * h

When both the volume are equated

as height is same

The Area of the base of the cone =  Area of the base of the Pyramid

The horizontal cross-sections of the pyramid which is at same height as the cone should have same area.

Therefore Option D is the answer.

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1(Identifying):

Tomatoes-x--$3 per lb

Mushrooms- 1/3 x-- $10 per lb

Peaches- x+1-- $6 per lb

2(Equation):

3x+6(x+1)+1/3x*10=80

3x+6x+6+10/3 x=80

12 1/3 x= 74

x=74÷(12+1/3)

Step 3(Final Equations):

74*3/37=6=tomatoes

Meaning...

6+1=7=Peaches

6/3=2= mushrooms

Answer:

7 lb of peaches, 6 lb of tomatoes, and 2 lb of mushrooms

Answer:

7 lb of peaches, 6 lb of tomatoes, and 2 lb of mushrooms

Step-by-step explanation:

Answer:

–9(3x³ – 8x + 9)

Step-by-step explanation:

–27x³ + 72x – 81

The above equation can be factorised as follow:

–27x³ = –3 * 3 * 3 * x * x * x

72x = 2 * 2 * 2 * 3 * 3 * x

–81 = –3 * 3 * 3 * 3

Common factor = 3 * 3

Greatest common factor = 9

Thus,

–27x³ + 72x – 81 = 9(–3x³ + 8x – 9)

–27x³ + 72x – 81 = –9(3x³ – 8x + 9)

Answer: opposite/hypotenuse

Step-by-step explanation:

Answer:

Jan 22, 2017 — Three pizzas and seven sandwiches cost $41.50 How much does a pizza cost? Follow • 2 ... equations and solve for p to get cost of a pizza.

Step-by-step explanation:

[tex]8\sqrt{2}[/tex]Step-by-step explanation:

Answer:

5,004,300

Step-by-step explanation:

Answer:

13.7113092008

Step-by-step explanation:

hope this helps

Answer:

As a decimal form it is 13.71130920... If you are looking for another form just tell me I am happy to help

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

Step-by-step explanation:

Area of equilateral triangle = ([tex]\sqrt{3}[/tex]/4) * [tex]2^{2}[/tex]

1.732050 * 7 = 12.123[tex]mm^{3}[/tex]

Answer:

10,2,5

Step-by-step explanation:

Answer:

Option A

Step-by-step explanation:

That is your answer

Answer:

a) 2(a+b)

Step-by-step explanation:

the sum of 2 numbers (or more) is always addition

so the sum of a  and b would be (a+b)

then, 2 times of a and b;

2(a+b)

^the times sign between the bracket and the 2 isnt needed, whenever there is a bracket and a number next to it, it is automatically a multiplication.

Answer:

-9

Step-by-step explanation:

Answer:

-9

Step-by-step explanation:

using BODMAS, our mathematical operation begins with the bracket.

it implies that from -3(-2+5), we solve the bracket.

-2+5=3

then our mathematical operation is the 'of' operation.

it implies that -3(3) = -9

Answer is -9

Answer:

(0,-5)

Step-by-step explanation:

Terminal minus initial. (3-3, -7+2) = (0,-5)

Given:

Rolling a fair dice.

To find:

The theoretical probability of rolling a number less than 5.

Solution:

The possible numbers of rolling a dice are 1, 2, 3, 4, 5, 6.

Total outcomes = 6

Numbers less than 5 are 1, 2, 3, 4.

Favorable outcomes = 4

Now, the theoretical probability of rolling a number less than 5 is:

[tex]\text{Probability}=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}[/tex]

[tex]\text{Probability}=\dfrac{4}{6}[/tex]

[tex]\text{Probability}=\dfrac{2}{3}[/tex]

In decimal form, it can be written as:

[tex]\text{Probability}\approx 0.67[/tex]

In percentage form, it can be written as:

[tex]\text{Probability}=\dfrac{2}{3}\times 100[/tex]

[tex]\text{Probability}\approx 66.67%[/tex]

Therefore, the theoretical probability of rolling a number less than 5 in the fraction, decimal and percent are [tex]\dfrac{2}{3}, 0.67[/tex] and [tex]66.67\%[/tex] respectively.

Answer:

C. No solutions exist Because the situation describes two lines that have the same slope and different y-intercepts

Step-by-step explanation:

it is important to keep the x-and y-coordinates in the same order in both the numerator and the denominator otherwise you will get the wrong slope so there is no solution.

Answer:

1. D

2. C

3. A

4. B

Step-by-step explanation:

________________

Answer:

The answer is "[tex]44 \ m^2[/tex]"

Step-by-step explanation:

[tex]R=4.5 \ m \\\\r=2.5\ m\\\\[/tex]

The area between two concentrated circles via an exterior circle radius R and an internal circle

[tex]r =\pi(R^2-r^2)[/tex]

The region, therefore, consists of two concentrated circles with radii of 4.5 m and 2.5 m.

[tex]r=\pi(4.5^2 -2.5^2)\\\\[/tex]

  [tex]=\frac{22}{7} (20.25-6.25) \\\\ =\frac{22}{7} (14) \\\\=22 \times 2 \\\\ =44 \ m^2[/tex]

Answer:

440

Step-by-step explanation:

this is the formula 2(wl+hl+hw)

Answer:

44 in2 your welcom

Step-by-step explanation:

Answer:

m = 8h

Step-by-step explanation:

The money she earns in one hour is $8.

8 dollars x hours worked = her total money for a day.

Hope this helps! :-)

Answer:

250 cm squared

Step-by-step explanation:

The formula for an area of a kite is:

A=pq/2

--------

p = 20 and q = 25

Multiply the two together (20 × 25)

Then divide by 2 (500 ÷ 2)

Then you get your answer (250)

Whenever you find the area, be sure to add the ² symbol or squared, or else it will be wrong.

--------

Have a good day :)

Answer:

It's wrong because the y intercepts are different

Step-by-step explanation:

The box method is OP for these kind of questions

If I don't do a good job explaining it then I reccomend you consult the internet

The expression (x + 4)² is not equivalent to the expression 2x² + 8x + 8.

The equivalent is the expression that is in different forms but is equal to the same value.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The expression is given below.

⇒ (x + 4)²

Simplify the expression, then we have

⇒ (x + 4)²

⇒ (x + 4)(x + 4)

⇒ x² + 8x + 16

Thus, the expression (x + 4)² is not equivalent to the expression 2x² + 8x + 8.

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Answer:

9.8x10^5 really hope this helps

Answer:

980,000,000,000,000

Step-by-step explanation:

Answer:

good

Step-by-step explanation:

y-axis is the vertical axis on the Cartesian coordinate plane. ... A y-axis is the line on a graph that is drawn from bottom to top. This axis is parallel to which coordinates are measured. The numbers placed on the y-axis are called y-coordinates

Answer:

On the Cartesian coordinate plane, the y-axis is the

vertical axis. A y-axis is a line drawn from bottom to top ona graph. 

This axis runs parallel to the axis along which coordinatesare measured. The numbers on the y-axis are referred to as y-coordinates.

Step-by-step explanation:

-

Answer:

m=1, hope this helps <33

Step-by-step explanation: