Rex is 4 times as old as Ted. If the sum of their ages is 30, how old is Ted?

Mathematics

2 answers:

MissTica3 years ago

7 0

T+4T=30
5T=30
/5 /5
T=6
Ted is 6 years old
Rex is 24 since 4*6=24

Leya [2.2K]3 years ago

5 0

Ted is 6 years old.

4x6=24+6=30

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Find the area of the trapezoid below.

Pani-rosa [81]

Answer: 54 cm²

Step-by-step explanation: In this problem, we're asked to find the area of the trapezoid shown. A trapezoid is a quadrilateral with one pair of parallel sides.

The formula for the area of a trapezoid is shown below.

$Area =\frac{1}{2} (^{b} 1 + ^{b}2)h$

The <em>b's</em> represent the bases which are the parallel sides and <em>h</em> is the height.

So in the trapezoid shown, the bases are 6 cm and 12 cm and the height is 6 cm. Plugging this information into the formula, we have $\frac{1}{2} (6 cm +12cm)(6 cm)$ .

Next, the order of operations tell us that we must simplify inside the parentheses first. 6 cm + 12 cm is 18 cm and we have $\frac{1}{2}(18 cm)(6 cm)$ .