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3 years ago

Shadows cast angles at equal measures, making triangles formed by shadows similar.

Mathematics

1 answer:

Misha Larkins [42]3 years ago

6 0

Answer:

the third side is 9.43

Step-by-step explanation:

the length from his head to the shadow of his head is the same as

$5^{2}$ + $8^{2}$ = $c^{2}$

so we solve this to get c = 9.43

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Model the following problem with a quadratic equation. Then solve. Find the length of a side of a square with an area of 75 ft2.

Vaselesa [24]

Answer:

x = 8.6603 m

Step-by-step explanation:

If x is the length of a side of the square, the area of the square will be x^2.

So, if the area of the square is 75 ft2, we can formulate the quadratic equation:

x^2 = 75

Now, solving the equation, we just need to make the square root of 75:

x = sqrt(75) = ±8.6603

x1 = 8.6603

x2 = -8.6603

Now, as x represents the length of a side of the square, and measurements can't be negative, we take only the positive value, so:

x = 8.6603 m

5 0

3 years ago

Find the area plz and hurry

Gennadij [26K]

10-47
11-42.16
12-48.65
13-2.4
14-7.9
15-8.15
Hope it helps :)

6 0

3 years ago

Find the midpoint of the segment with the following endpoints. (2,9) and (8,1)

vazorg [7]

Answer:

$\displaystyle (5,5)$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Midpoint Formula: $\displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Step-by-step explanation:

Step 1: Define

Point (2, 9)

Point (8, 1)

Step 2: Identify

(2, 9) → x₁ = 2, y₁ = 9

(8, 1) → x₂ = 8, y₂ = 1

Step 3: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Substitute in points [Midpoint Formula]: $\displaystyle (\frac{2+8}{2},\frac{9+1}{2})$
[Fractions] Add: $\displaystyle (\frac{10}{2},\frac{10}{2})$
[Fractions] Divide: $\displaystyle (5,5)$

7 0

3 years ago

ماThe circumference of a circle is 7pie m. What is the area of the circle?

Tresset [83]

Answer:

12.25 $\pi$ sq m

Step-by-step explanation:

if circumference is 7 $\pi$ then the diameter is 7

Area = $\pi$ r²

A = (3.5)² $\pi$

A = 12.25 $\pi$

7 0

2 years ago

A street in San Francisco rises 20 feet for every 100 feet horizontally. What is the measure of the angle of elevation,

SIZIF [17.4K]

Answer:

11°

Step-by-step explanation:

tan ∅ = 20/100 = 0.2

∅ = 11.31°

5 0

3 years ago