3 years ago

The formula for (a-b)^2 is a^2-2ab+b^2.

Mathematics

1 answer:

photoshop1234 [79]3 years ago

8 0

Don't forget negative x negative = positive and negative + negative is still negative

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Vladimir [108]

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3 years ago

The number of tourists at the beach per weekend in July was 55,000. In November, the number of tourists per weekend was 18,000.

Nonamiya [84]

55 minus 18 is 37 and then it would be 37,000 and then you just convert it so it is 37% of 100 (the answer is 37%)

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3 years ago

On a chilly day in New York, the temperature changed at -4 degrees per hour. How many hours did it take for the temperature to c

Aleks04 [339]

Answer:

9 hours

Step-by-step explanation:

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3 years ago

Question in pic, will mark brainliest.

bulgar [2K]

Answer:

See explanation

Step-by-step explanation:

Consider triangles ABC and DEC. In these triangles,

$\overline{BC}\cong \overline {EC}$ - given
$\overline{AC}\cong \overline {DC}$ - given;
$\angle ACB\cong \angke DCE$ as vertical angles.

So,

$\triangle ABC\cong \triangle DEC$ by SAS postulate (two sides and angle between these sides of one triangle are congruent to two sides and angle between these sides of another triangle, so triangles are congruent).

Congruent triangles have congruent corresponding parts, hence,

$\overline{BA}\cong \overline{ED}$

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3 years ago