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bulgar [2K]
3 years ago
9

Seth finds the slant height of a square pyramid with a base length of 6cm and a height of 7 CM to be approximately 9.2 cm. what

mistake did Seth make in finding the slant height of the square pyramid
please help asap

Mathematics
1 answer:
LenaWriter [7]3 years ago
3 0

Answer:

He used formula C).

Step-by-step explanation:

The correct formula for the slant height is given by

x^2 = 3^2 + 7^2

x =  7.62 cm.

To get 9.2 he must have used

x^2 = 6^2 + 7^2 = 85

as  √85 = about 9.2.

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weqwewe [10]

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x=-10

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20x - 18x = 6 +8

2x = 14

x=7

4 0
3 years ago
The lengths of the legs of a right triangle are consecutive even integers. The hypotenuse is 58 inches. What is the sum of the l
miskamm [114]

Answer:

82 inches

Step-by-step explanation:

The difference between consecutive even integers is 2, thus

let the legs be n and n + 2

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

n² + (n + 2)² = 58² ← expand and simplify left side

n² + n² + 4n + 4 = 3364 ( subtract 3364 from both sides )

2n² + 4n - 3360 = 0 ( divide all terms by 2 )

n² + 2n - 1680 = 0 ← in standard form

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Equate each factor to zero and solve for n

n + 42 = 0 ⇒ n = - 42

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But n > 0 ⇒ n = 40

and n + 2 = 40 + 2 = 42

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3 0
3 years ago
Find the following when a = -1, b = 2, c = -1/4<br> (4b - 3)/(2a) -1
Katena32 [7]
We substitute the given into the equation
given: a=-1, b=2, c=\frac{-1}{4}
=(\frac{4b-3}{2a}-1
=\frac{4(2)-3}{2(-1)}-1
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to continue, we can either find a common denominator or change the fraction to decimal.
Fraction to Decimal:
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Equation=-2.5-1=-3.5
OR Common Denominator:
=\frac{5}{-2}\frac{-1}{1}×\frac{-2}{-2}         (denominator should be -2=common)
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