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crimeas [40]
3 years ago
11

Help please please help me

Mathematics
2 answers:
OLga [1]3 years ago
7 0

Answer:

80%

Step-by-step explanation:

40/50 of the teachers in the meeting were first-year teachers.

100 is the denominator to percents when transfered into fractions so we do 100 ÷ 50 which is 2 so we multiply 50 by 2 to get to 100. This means that we must multiply 40 by 2 as well to get the numerator.

40 x 2 = 80

This equals 80/100. Like I said before, fractions with denominators of 100 can easily be transfered into percentages. It would be 80%.

Arada [10]3 years ago
5 0

Answer:

80%

Step-by-step explanation:

40/50 = 80/100 = 80%

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SashulF [63]

Answer:

29.5 square inches

Step-by-step explanation:

Let's divide the shape into 3 parts to make it easy for us to find the area.

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- a triangle

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8 0
3 years ago
Given ΔADC and ΔAEB, What is AE?
chubhunter [2.5K]

Answer:

AE = 43.2 units

Step-by-step explanation:

As per the given question image, it can be seen that in the \triangle ADC \text { and }\triangle AEB :

1. \angle B = \angle C = 90^\circ

2. \angle A is common to both the triangles.

3. Two angles are common, so the third angle \angle E is also equal to \angle D.

All the three angles in the \triangle ADC \text { and }\triangle AEB are equal to each other, hence the triangles are similar.

As per the property of similar triangles, the ratio of their sides will be equal.

AB : AC = AE : AD

AC = 88 units

BC = 55 units

AB = AC - AB = 33 units

Let side AE = x units

Side AD = AE + ED

So, AD = x + 72

Using the ratio:

\dfrac{AB}{AC} = \dfrac{AE}{AD}\\\Rightarrow \dfrac{33}{55} = \dfrac{x}{x+72}\\\Rightarrow 55x = 33 \times 72\\\Rightarrow x = \dfrac{3\times 72}{5}\\\Rightarrow x = 43.2\ units

So, AE = 43.2 units

4 0
3 years ago
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