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2 years ago

The net of a square pyramid is shown below:

Mathematics

1 answer:

Kay [80]2 years ago

8 0

Step-by-step explanation:

Surface area of solid

= Area of Square + 4 * Area of Triangle

= (2)(2) + 4 * [(0.5)(2)(5)]

= 4 + 4 * 5

= 24 square inches. (3)

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A middle school has a speech club with a total of 18 students. The ratio of girls to boys is 4:5. How many girls are in the spee

Alex

18 kids total.
4 : 5
4+5=9
18 divided by 9 = 2
Each unit = 2
4 times 2 = 8, so there are 8 girls
5 times 2 = 10, so there are 10 boys.

7 0

3 years ago

Solve the quadratic equation for x. What is the product when the roots are multiplied? (x + 2)2 = 1 A) −3 B) −6 C) −9 D) 3

ehidna [41]

Answer:

Step-by-step explanation:

To solve the quadratic equation, use the inverse operation to squaring. This will undo the exponent and allows x to be isolated. The inverse operation is the square root. This is called the square root property of equality.

(x + 2)² = 1

√(x+2)² = √1

(x+2) = ±1

x = 1 -2 and x = -1 - 2

x = -1 and x = -3

The product of the roots -1 and -3 is -1*-3 = 3

8 0

2 years ago

What is 39×45-19÷12=

ladessa [460]

Answer:

I thank it is 1753.4

Step-by-step explanation:

i hope its right

5 0

2 years ago

What are the domain and range of g of x equals the square root of the quantity x plus 4?

boyakko [2]

Using it's concept, it is found that the domain and range of the function are given by:

D: [–4, ∞) and R: [0, ∞)

<h3>What are the domain and the range of a function?</h3>

The domain of a function is the set that contains all the values of the input.

The range of a function is the set that contains all the values of the output.

In this problem, the function is:

$g(x) = \sqrt{x + 4}$

The square root function does not exist for negative values, hence the domain is represented by:

$x + 4 \geq 0 \rightarrow x \geq -4$

The range of the square root function is $x \geq 0$ , which remains the same as there are no vertical translations.

Hence the correct option is given by:

D: [–4, ∞) and R: [0, ∞)

More can be learned about domain and range of functions at brainly.com/question/10891721

4 0

2 years ago

The probability of rolling a 2 is 1/6 predict how many times a 2 will be rolled out of 30 rolls.

Anestetic [448]

Answer:

5 times

Step-by-step explanation:

Given that the probability of a 2 is $\frac{1}{6}$ then number of times a 2 will be rolled is

30 × $\frac{1}{6}$ = 5

5 0

3 years ago