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3 years ago

Solve the system of equations below by graphing.

Mathematics

2 answers:

Alex17521 [72]3 years ago

8 0

Answer with explanation:

The two equation which we have to solve by graphing are:

1 → 0.2 x-0.5 y=10

2 x-5 y=100

2 → 0.5 x-0.3 y=15

5 x -3 y =150

$\frac{2}{5}\neq \frac{-5}{-3}\neq \frac{100}{150}(\frac{2}{3}$

So,the system of equation has unique Solution.

x=23.68

y= -10.53

None of these.

AleksandrR [38]3 years ago

5 0

I think it would be B hope it helps

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In the triangle below, 4/5 represents which ratio?

ASHA 777 [7]

Answer:
sin (C)

Explanation:
In a right-angled triangle, special trig functions can be applied. These functions are as follows:
sin (theta) = $\frac{opposite}{hypotenuse}$

cos (theta) = $\frac{adjacent}{hypotenuse}$

tan (theta) = $\frac{opposite}{adjacent}$ 

Now, let's check the triangle we have:
We have two options:
First option:
5 is the hypotenuse of the triangle
4 is the side adjacent to angle B
Therefore, we can apply the cos function:
cos (B) = $\frac{4}{5}$ 

Second option:
5 is the hypotenuse of the triangle
4 is the side opposite to angle C
Therefore, we can apply the sin function:
sin (C) = $\frac{4}{5}$

Among the two options, the second one is the one found in the choices. Therefore, it will be the correct one.

Hope this helps :)

8 0

3 years ago

Read 2 more answers

Consider the equation 5 +x=n.

Marat540 [252]

Answer:

It's C.

Step-by-step explanation:

Any value of x must have a bigger negative number than 5. In this case, formally you say that all x values must be LESS than 5 only.

8 0

2 years ago

Find the area of the shaded portion of the figure use 3.14

S_A_V [24]

Answer:

1,772 cm²

Step-by-step explanation:

To find the answer

Area of the rectangle - Area of 2 circle inside

= Shaded Area

(40 x 60) - (2 x π x 10²) = 1,772 cm²

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2 years ago

A map of a rectangular park has a length of 4 inches and a width olo and a width of 6 inches. It uses a scale of 1 inch for ever

Zielflug [23.3K]

Answer:

The actual area of the park is 21,600 miles square.

Step-by-step explanation:

Step 1: Calculate the area of the park

Area of rectangle = Length x width

Length = 4 inches

Width = 6 inches

Scale factor is given as, 1 inch = 30 miles.

So, converting the length and width in miles by using the scale factor, we get

Length = 4 * 30 = 120 miles

Width = 6 * 30 = 180 miles

The formula of finding the area of an rectangle is:

Area = length x width

By putting the values in equation, we get

Area = 120 x 180

Area = 21,600 miles square

Therefore, the actual area of the park is 21,600 miles square.

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3 years ago

Martha is making lemonade. She needs lemon juice, sugar and water. She needs 1 cup of lemon juice and 3 cups of water. Which cup

mixer [17]

Answer:

0.61 ( A )

Step-by-step explanation:

The standard proportion of Sugar, lemon juice and water needed to make a Lemonade is Usually 1 cup each

But If you Intend to make Your lemonade less sweet you can increase the water or reduce the amount of sugar to ≈ 1 ( i.e. less than 1 but approximately = 1 )

Hence The appropriate amount of sugar needed will be = 0.61

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2 years ago

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