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2 years ago

Find the surface area of the square pyramid 8mm 6mm

Mathematics

1 answer:

bija089 [108]2 years ago

5 0

Answer:

136 mm²

Step-by-step explanation:

$A=a^{2} +2a\sqrt{\frac{a^{2} }{4} } +h^{2}$

$A=6^{2} +2(6)\sqrt{\frac{6^{2} }{4} } +8^{2}$

$A=36 +12\sqrt{\frac{36 }{4} } +64$

$A=36 +12\sqrt{9 } +64$

$A=36 +12(3)+64$

$A=36 +36+64$

A = 136

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Find the value of y if VP is an angel bisector, m<2=1+28y and m

galben [10]

Answer:

$\boxed{y=1}$

Step-by-step explanation:

Since $m\angle1=m\angle2$ due to $\over{VP}$ is an angle bisector, we have the following:

$m\angle1+m\angle2=m\angle XVW\\(1+28y)+(1+28y)=59y-1\\2+56y=59y-1\\2+1=59y-56y\\3=3y\\y=1$

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2 years ago

Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real

garik1379 [7]

The complete question is

"Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real number solutions? (The related quadratic function will have two x-intercepts.) Check all that apply.

0 = 2x^2 – 7x – 9

0 = 4x^ 2 – 3x – 1

The quadratic equations that have real number solutions are; 4x^2 – 3x – 1, and 2x^2 – 7x – 9.

<h3>What is the formula for Discriminant?</h3>

The formula for finding the discriminant is

$b^2 - 4ac$

The solution contains the term $\sqrt{b^2 - 4ac}$ which will be:

Real and distinct if the discriminant is positive

Real and equal if the discriminant is 0

Non-real and distinct roots if the discriminant is negative

For the quadratic equation $2x^2 - 7x - 9$

$b^2 - 4ac$

$= (-7) ^2 - 4( 2) ( -9)\\\\= 49 + 72 = 121$

This equation has two real number solutions.

For the quadratic equation $4x^ 2 - 3x- 1$

$b^2 - 4ac$

$= (-3) ^2 - 4( 4) ( -1)\\\\= 9 + 16 = 25$

This equation will have two real number solutions.

Learn more on discriminant here:

brainly.com/question/1537997

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1 year ago

Whats the prime factorization for 640

ahrayia [7]

The prime factorization of 640 can be written as 27 × 51 where 2, 5 are prime.

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2 years ago

Which verbal expression best represents the algebraic expression

suter [353]

Answer:

13x

Step-by-step explanation:

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2 years ago

Read 2 more answers

If (x+1,10)=(4,2y) then find the value of x & y

lawyer [7]

Answer:

Step-by-step explanation:

<h3>Given, </h3>

(x+1, 10) = (4, 2y)

First x coordinate, 

x + 1 = 4

=> x = 4 - 1

=> x = 3 (Ans) (i)

Second y coordinate, 

10 = 2y

$= > y = \frac{10}{2}$

=> y = 5 (Ans) (ii)

3 0

2 years ago