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Stella [2.4K]
2 years ago
5

What is the surface area of the pyramid

Mathematics
1 answer:
Shalnov [3]2 years ago
5 0

Answer:

S= 36.76

Step-by-step explanation:

S = area of base +(base of perimeter*Slant height)*1/2

S = 4*4+((4+4+4)/2)*3.46

S = 16+((12/2)*3.46)

S = 16+6*3.46

S = 16 + 20.76

S = 36.76 cm^2

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Nooha purchased a tv for $9000 and sold it at a profit of 8% find selling price ​
miskamm [114]

Answer:

720

Step-by-step explanation:

because 8% of 9000$ is 720$.

another way.

Step 1: Our output value is 9000.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$9000=100$.

Step 4: Similarly, $x=.8%$.

Step 5: This results in a pair of simple equations:

$9000=100%(1)$.

$x=.8%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

Step 7: Again, the reciprocal of both sides gives

Therefore, 8%of $9000$ is $720

4 0
3 years ago
Which equation is represented by the phrase “one-fourth of a number, increased by eight equals sixteen”?
joja [24]

Answer:

One-fourth n + 8 = 16

Step-by-step explanation:

basically 1/4n +8=16

4 0
3 years ago
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Complete the factoring by writing the polynomial as the product of two factors.
antiseptic1488 [7]

Answer:

ikhjgvyiho

Step-by-step explanation:

6 0
2 years ago
In order to efficiently bid on a contract, a contractor wants to be 95% confident that his error is less than two hours in estim
Sonja [21]

Answer:

Step-by-step explanation:

Given that in order to efficiently bid on a contract, a contractor wants to be 95% confident that his error is less than two hours in estimating the average time it takes to install tile flooring.

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95% confidence interval = Mean±1.96*std dev

Hence we have

1.96(\frac{4.5}{\sqrt{n} } )

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Sample size should be 20.

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What is 4377 divided by 8
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Answer:

547.125

Step-by-step explanation:

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