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3 years ago

Please help!! will mark brainliest

Mathematics

2 answers:

Pachacha [2.7K]3 years ago

8 0

Answer:

∠CAB = 20°

Step-by-step explanation:

Looking at the diagram, we can see that ADC is a straight line so it is a 180°. Using this information, we can find the ∠CDE :

∠CDE = 180° - ∠ADE

= 180° - 130°

= 50°

Triangle CDE is an isosceles triangle so ∠CDE = ∠CED = 50° and now, we can find the angle of C :

∠C = 180° - ∠CDE - ∠CED (angle in a triangle is 180°)

= 180° - 50° - 50°

= 80°

Given that triangle ABC is also an isosceles triangle so ∠C = ∠B = 80° and lastly, we can find ∠CAB :

∠CAB = 180° - ∠C - ∠B

= 180° - 80° - 80°

= 20°

Contact [7]3 years ago

5 0

Answer:

angle CAB = 20 degrees

Step-by-step explanation:

Hope this helps you!

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Find the surface area of the prism.

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Answer:

288 m

Step-by-step explanation:

All you do is length times width times height.

Do 6 times 16 times 3 to get your answer of 288 m

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4 years ago

What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?

Natasha2012 [34]

Answer:

$x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$ are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

$2x^2-10x-3$

We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

$x=\frac{b^2\pm\sqrt{D}}{2a}\text{where}D=\sqrt{b^2-4ac}$

General form of quadratic equation is $ax^2+bx+c$

On comparing general equation with b given equation we get

a=2,b=-10,c=-3

On substituting the values in formula we get

$D=\sqrt{(-10)^2-4(2)(-3)}$

$\Rightarrow D=\sqrt{100+24}=\sqrt{124}$

Now substituting D in $x=\frac{b^2\pm\sqrt{D}}{2a}$ we get

$x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}$

$x=\frac{100\pm\sqrt{124}}{4}$

$x=\frac{100\pm2\sqrt{31}}{4}$

$x=\frac{50\pm\sqrt{31}}{2}$

Therefore, $x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$

5 0

3 years ago

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How many times greater than √2 is√32?<br><br> Can anybody help out here?

Anarel [89]

Answer:

Step-by-step explanation:

Root32= 4×root2

Root32 is 4 times greater than root2

Pls mark as brainliest

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3 years ago

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I need on this one please

Flauer [41]

Aimme is right. All the sides are obtuse. They do not equal exactly 90 degrees.

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4 years ago

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Please help me prove this theorem thing. I'll give yuh mind kisses <3 have a good day luvlies

lesantik [10]

Answer:

∠ 1 = 20 x + 5

∠ 2 = 24 x - 1

If lines l and m are parallel:

∠ 1 + ∠ 2 = 180°

20 x + 5 + 24 x - 1 = 180

44 x + 4 = 180

44 x = 180 - 4

44 x = 176

x = 176 : 44

x = 4°

Your welcome again :)

Step-by-step explanation:

6 0

3 years ago

Please help!! will mark brainliest ​

Please help!! will mark brainliest