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3 years ago

Plzzz helppppppp meee

Mathematics

2 answers:

Usimov [2.4K]3 years ago

6 0

I kdnf the answer is

-3

yulyashka [42]3 years ago

3 0

Answer:

-3

Step-by-step explanation:

H = -3

J = -1

M=2

(-3+-1)+(-1+2)=-3

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A square was altered so that one side is increased by 9 inches in the other side is decreased by 2 inches. The area of the resul

nevsk [136]

Answer:

area of the original square = 36 in²

Step-by-step explanation:

given data

one side is increased = 9 inches

other side is decreased = 2 inches

area of the resulting rectangle = 60 in²

solution

we consider here x as the length of any one side

and

longer side of the resulting rectangle = x + 9

and

the shorter side x - 2

so that area of this rectangle is (s+9) × (s-2) = 60 in²

standard form of equation is x² + 7x - 18 = 60 .....................1

it will be

x² + 7x - 78 = 0

(s+13) (s-6) = 0

so that here x = -13

and x = 6

here we Discard x = -13 because the side length cannot be negative.

so x = 6

and area of the original square = 36 in²

5 0

3 years ago

Write the phrase as an expression. Then simplify the expression. The product of 8 and a number y, multiplied by 9

RideAnS [48]

Answer:

It could be either of two ways:

8 x + 9 or 8 ( x + 9)

7 0

4 years ago

Whats the circumference of 5m

MAXImum [283]

C= $\pi$ d.
If 5m is the radius, then multiply it by 2, then multiply it by $\pi$ .
If 5m is the diameter, then just multiply it by only $\pi$ .

5 0

3 years ago

HELP ASAP I GIVE BIG BRAIN AND 25plus 25 if u get big brain

Serga [27]

Answer:

the length of chicken coop and the garden is of 40 feet.

Explanation:

Given that the garden is the length of the chicken coop, equal length

→ 3x + 12 = 6x – 16

→ 3x - 6x = -16 - 12

→ -3x = -28

→ $x = \frac{-28}{-3}$

→ $x= 9\frac{1}{3}$

→ x = 9.33 feet.

The garden length = 3( $\frac{-28}{-3}$ ) + 12 → 40 feet
the chick coop length should be same as the garden length.

3 0

3 years ago

Read 2 more answers

Helpppp pleaseeeeeeeeeeeeeee

Vesna [10]

Answer:

Find below the calculations of the two areas, each with two methods. The results are:

Upper triangle:

$Area=5000\sqrt{3}units^2$

Lower triangle:

$Area=14,530m^2$

Explanation:

A) Method 1

When you are not given the height, but you are given two sides and the included angle between the two sides, you can use this formula:

$Area=side_1\times side_2\times sin(\alpha)$

Where, $\alpha$ is the measure of the included angle.

1. Upper triangle:

$side_1=200units\\ \\ side_2=100units\\ \\ \alpha =60\º\\ \\ Area=200units\times 100units\times sin(60\º)/2\\ \\ Area=5000\sqrt{3}units^2$

2. Lower triangle:

$side_1=231m\\ \\ side_2=150m\\ \\ \alpha =123\º\\ \\ Area=231m\times 150m\times sin(123\º)/2\\ \\ Area=14,529.96m^2\approx14,530m^2$

B) Method 2

You can find the height of the triangle using trigonometric properties, and then use the very well known formula:

$Area=(1/2)\times base\times height$

Use it for both triangles.

3. Upper triangle:

The trigonometric ratio that you can use is:

$sine(\alpha)=opposite\text{ }leg/hypotenuse$

Notice the height is the opposite leg to the angle of 60º, and the side that measures 100 units is the hypotenuse of that right triangle. Then:

$sin(60\º)=height/100units\\ \\ height=sin(60\º)\times100units\\ \\ height=50\sqrt{3}units$

$Area=(1/2)\times base\times height=(1/2)\times 200units\times 50\sqrt{3}units=5,000\sqrt{3}units^2$

3. Lower triangle:

$sin(180\º-123\º)=height/231m\\ \\ height=sin(57\º)\times 231m\\ \\ height=193.7329m^2$

$Area=(1/2)\times base\times height=(1/2)\times 150m\times 193.7329m^2\\\\ Area=14,529.96m^2\approx 14,530m^2$

5 0

3 years ago