3 years ago

What is the area of the figure 7 will mark brainiest

Mathematics

1 answer:

Masteriza [31]3 years ago

4 0

The area is 27 inches

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AC=36cm, and BC=27cm. Verify that DE\\AB.

emmasim [6.3K]

Answer:

$\overline {DE} \parallel \overline{AB}$ because $\frac{EC}{DC} = \frac{AC}{BC}$ .

Step-by-step explanation:

According to the Theorem of Thales and definition of proportionality, $\overline {DE} \parallel \overline{AB}$ if and only if $\frac{EC}{DC} = \frac{AC}{BC}$ . If we know that $EC = 15\,cm$ , $DC = 20\,cm$ , $BC = 36\,cm$ and $AC = 27\,cm$ , then we have the following result:

$\frac{15\,cm}{20\,cm} = \frac{27\,cm}{36\,cm}$

$\frac{3}{4} = \frac{3}{4}$

Hence, $\overline {DE} \parallel \overline{AB}$ .

4 0

3 years ago

Determine whether a triangle can be formed with the given side lengths.

choli [55]

We can use triangle inequality to prove it. What this rule is, it's basically if u add up 2 sides of the triangle, the length must be longer than the third side, check all 3 sides, and if all sides matches with the rule, a triangle is possible.

5 0

4 years ago

Jen’s Flower Shop sells flowers for $1.25 each. Mary’s Flower Shop sells a dozen flowers for $15.48. Who has the best deal? SHOW

kondaur [170]

Answer:

Jen's has the best deal

Step-by-step explanation:

Jens: $1.25 per flower

Mary: $15.48 /12 flower

$1.29/flower

1.25< 1.29 so Jen's has the best deal

7 0