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3 years ago

Ahmed is taking orders for lunch. A slice

Mathematics

1 answer:

Wittaler [7]3 years ago

3 0

Answer:

x+y=7; 2.5x+3.5y=21.5
(x, y) = (3, 4)

Step-by-step explanation:

Perhaps you want a system of equations and their solution.

You have defined the variables, so you just need to write the relationships.

x + y = 7 . . . . we assume one order per person

2.50x + 3.50y = 21.50 . . . . we assume Ahmed collected just enough

Multiplying the first equation by 2.5 and subtracting that from the second equation, we get ...

(2.50x +3.50y) -2.5(x +y) = (21.50) -2.5(7)

y = 4

x = 7 -4 = 3

There were 3 pizza orders and 4 sandwich orders.

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If the relative frequencies are 0.48 and 0.52, which

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2 years ago

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The area of a square is given by x2, where x is the length of one side. Mary's original garden was in the shape of a square. She

Vinil7 [7]

Answer:

$128\text{ ft}^{2}$

Step-by-step explanation:

We have been given that the area of a square is given by $x^2$ , where x is the length of one side.

Mary's original garden was in the shape of a square. She has decided to double the area of her garden. So the new area of Mary's garden will be 2 times the area of original garden.

We can represent this information in an equation as:

$\text{Area of Mary's new garden}=2x^{2}$

Therefore, the expression $2x^2$ will represent the area of Mary's new garden.

To evaluate the area of new garden, if the side length of Mary's original garden was 8 feet, we will substitute x equals 8 in our expression.

$\text{Area of Mary's new garden}=2(8\text{ ft})^{2}$

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Therefore, the area of Mary's new garden will be 128 square feet.

4 0

3 years ago

Anyone know how to do it

Morgarella [4.7K]

Answer:

Surface area of cube = 6x²

surface area of cube = surface area of sphere

it means that 6x²=4πr²

x²=

$\frac{4\pi {r}^{2} }{6} = \frac{4 \pi9}{6} = \frac{4\pi3}{2} = 6\pi$

$x = \sqrt{6\pi}$

$\sqrt{6\pi} = \sqrt{k\pi}$

$6\pi = \pi \: k$

$k = 6$

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2 years ago

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xz_007 [3.2K]

They mowed total of 11/15 (5/15 + 2/5) already, so they still have 4/15.

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2 years ago

In each diagram, abc is a straight line. Find the unknown angles.

aleksandr82 [10.1K]

Answer:

The value of ∠b = 180°

Step-by-step explanation:

Given that;

ABC is a straight line

Another angle is 137°

Find:

The value of ∠a

The value of ∠b

Computation:

We know that, ABC is a straight line

So,

137 + The value of ∠a = 180

The value of ∠a = 180 - 137

The value of ∠a = 43°

The value of ∠b = 360 - 137 - The value of ∠a

The value of ∠b = 360 - 137 - 43

The value of ∠b = 180°

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2 years ago