3 years ago

Solve for k. 212 = -4k

Mathematics

2 answers:

antiseptic1488 [7]3 years ago

7 0

Answer:

K = - 53

Step-by-step explanation:

olga2289 [7]3 years ago

3 0

Answer:

k = -53

Step-by-step explanation:

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Evaluate:<br> 10 x [(6 + 4) = 2]

svetlana [45]

Answer:

You have to pay close attention to the Order of Operations.

10(6+4)/2. Grouping symbols first.

6+4=10.

10(10)/2

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100/2.

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Step-by-step explanation:

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3 years ago

What is the area of this composite figure?

Mkey [24]

We have two congruent trapezoids.

The formula of an area of a trapezoid:

$A=\dfrac{base_1+base_2}{2}\cdot\ height$

We have:

$base_1=210\ mm\\\\base_2=150\ mm\\\\height=55\ mm$

Substitute:

$A=\dfrac{210+150}{2}\cdot55=\dfrac{360}{2}\cdot55=180\cdot55=9,900\ mm^2$

Answer:

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3 years ago

What is the perimeter of the smaller triangle?

Luden [163]

Answer:

14 mm

Step-by-step explanation:

Just as the little side is 1/4 of the larger side , so is the perimeter

1/4 * 56 = 14 mm

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2 years ago