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3 years ago

I will give brainiest to whoever answers correctly !!

Mathematics

1 answer:

kakasveta [241]3 years ago

5 0

that's the final answer.. need more help lget me know.

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Please help me with this question

jek_recluse [69]

A is the correct answer

E is 90 degrees

ABE is 52 so EBD is 64
$(180 - 52) \div 2 = 128 \div 2 = 64$

so D is 26:
$180 - (90 + 64) = 180 - 154 \\ = 126$

good luck

3 0

3 years ago

A 20% increase in price led the quantity supplied of pencils in a competitive market to increase from 380.00 to 410.00. What is

Aleks04 [339]

Answer:

about 0.39 (inelastic)

Step-by-step explanation:

Elasticity of supply is the ratio of percentage supply change to a corresponding percentage of price change. Here, that is ...

eos = (410/380 -1)/(0.20) = 0.78947/0.2 ≈ 0.3947

Values below 1 are said to correspond to an <em>inelastic</em> supply, one not very sensitive to price.

6 0

4 years ago

In ΔHIJ, the measure of ∠J=90°, the measure of ∠I=15°, and IJ = 9.5 feet. Find the length of HI to the nearest tenth of a foot.

BabaBlast [244]

Answer:9.8

Step-by-step explanation:

7 0

3 years ago

True or false (Picture provided)

Naya [18.7K]

<h2>Hello!</h2>

The answer is: True.

A counterexample is a way that we can prove that something is not true about a mathematical equation or expression, it's also considered as an exception to a rule.

So:

$sec^{2}x-1=\frac{cosx}{cscx}\\\\tg^{2}x=\frac{cosx}{\frac{1}{sinx}}\\\\\frac{1-cos2x}{1+cos2x}=cosxsinx$

Then, evaluating we have:

$\frac{1-cos(2*45)}{1+cos(2*45)}=cos(45)*sin(45)\\\\\frac{1-0}{1+0}=\frac{\sqrt{2} }{2}*\frac{\sqrt{2}}{2}\\\\1=\frac{(\sqrt{2})^{2} }{4}\\\\1=\frac{2}{4}\\\\1=\frac{1}{2}$

Hence, we can see that the equation is not fulfilled, so, 45° is a counterexample for $sec^{2}x-1=\frac{cosx}{cscx}$ and the answer is true.

Have a nice day!

3 0

4 years ago

Using diagonals from a common vertex, how many triangles could be formed from a 20-gon?

vodka [1.7K]

Answer: 320 triangles

Step-by-step explanation: Triangles can be drawn utilizing one side of the polygon. In the event that we take one side, at that point there are a add up to of 16 triangles that can be drawn and we have 20 sides. So, add up to 20×16=320 triangles.

8 0

3 years ago