Which quadrilaterals are not squares? Choose each correct answer.

Mathematics

1 answer:

ASHA 777 [7]3 years ago

6 0

Answer:

2 and 4.

Step-by-step explanation:

2 is not a square because a trapezoid does have 4 sides, but the sides are not parallel, or congruent. ↓

4 is not a square because similar to the trapezoid, it does have 4 sides, but is not parallel nor congruent. ↓

Although some people consider a rectangle a square, it is a square and also is not because it has 2 pairs of parallel sides, instead of all 4 sides being parallel.

Hope it helps!

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David requires at least $300 to hold his birthday party. If David can save $63 a month, how many months will he need to save to

Darya [45]

Answer:

a. $63x \geq 300$

b. $x \geq 4.76$ $or$ $x\geq 5$

c. For David to achieve three hundred dollars, he would have to save approximately 5 months

Step-by-step explanation:

A. David requires three hundred dollars, this is his goal, indicating the three hundred must be alone. For the inequality sign, the statement says that he "requires at least $300", meaning that he would have to maintain three hundred dollars or his amount could go greater than $300. Therefore, the inequality sign should be "≥" or "greater than or equal to". We also know that David can save 63 dollars per month, meaning that there should be a variable next to 63 so we could replace "x" with any number to solve our inequality. This should leave us with the following inequality :

63x ≥ 300

B. To solve the inequality, we need to get x alone, to do so, divide 63 by both sides,

$\frac{63x}{63} \geq \frac{300}{63}$