3 years ago

Using the exponent rules, when multiplying

Mathematics

1 answer:

34kurt3 years ago

8 0

We can rule out a and d since they go hand in hand, and we’re talking about multiplying.
c.) add

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Evaluate the expression for x = 3 :11 + (8 - x)2 - 20

hammer [34]

Answer:

Step-by-step explanation:

Step 1: Plug in

11 + (8 - 1)2 - 20

Step 2: Parenthesis

11 + 7(2) - 20

Step 3: Multiply

11 + 14 - 20

Step 4: Combine like terms

6 0

3 years ago

ABCD is a trapezoid with AD = 5 ft, DC = 7 ft, and AB = 15 ft. Find the area of the trapezoid. 30 ft2 33 ft2 44 ft2 55 ft2

Nataly_w [17]

Answer: 33 ft².

Step-by-step explanation:

1. As you can see in the figure attached, the trapezoid is formed by a rectangle and two equal right triangles. The base of each triangle is 4 feet and you know the lenght of the hypotenuse AD, therefore, you can calculate the height by applying the Pythagorean Theorem:

$h=\sqrt{(5ft)^{2}-(4ft)^{2}}=3ft$