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3 years ago

13

The bottom part of this block is a rectangular prism. The top part is a square pyramid. You want to cover the block entirely wit

h paper. How much paper do you need?

1 answer:

Blababa [14]3 years ago

4 0

Answer:

970.2

28x11x6.3

1,940.4/2

970.2

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What constant do you need to add to each quadratic to complete the square?

babunello [35]

Answer:

1. 4

2. 16

3. 9

Step-by-step explanation:

Completing the square requires a quadratic in $ax^2+bx=c$ form. Once in this form, calculate $(\frac{b}{2})^2$ .

1. $(\frac{b}{2})^2=(\frac{-4}{2})^2=4$

2. $(\frac{b}{2})^2=(\frac{-8}{2})^2=16$

3. Requires you divide everything by 3 first.

$\frac{3x^2+18x}{3} =\frac{249}{3} \\x^2+6x=81$

$(\frac{b}{2})^2=(\frac{6}{2})^2=9$

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3 years ago

Solve |2x - 3| + 5 =10.

EastWind [94]

The answer is: -1, 4

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3 years ago

Solve the Equation: 1/3x=-5

storchak [24]

Answer:

x = -15

Step-by-step explanation:

$\dfrac{1}{3}x = -5$

Multiply both sides by 3.

$3 \times \dfrac{1}{3}x = 3 \times (-5)$

$x = -15$

7 0

3 years ago

How many terms are there in the expression 2x - 5y + 3 + x? <br> 3<br> 4<br> 5<br> 6

Dmitriy789 [7]

Terms or Like Terms?

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3 years ago

Read 2 more answers

According to a 2010 study conducted by the Toronto-based social media analytics firm Sysomos, 71% of all tweets get no reaction.

lesya692 [45]

Answer:

Expected Number=71

Variance =4959

Standard Deviation= 70.42

Step-by-step explanation:

Expected Number = E (x) = np

Here p = 0.71 and q= 1- 0.71= 0.29 n= 100

Expected Number = E (x) = np = 0.71*100= 71

b) The Variance and Standard Deviation for the number of these tweets with no reaction

Suppose the number of tweets are hundred then the number of tweets with no reaction would be 71 .

Variance = E(x²) - [E(x)]² = (100)²- (71)²= 10000- 5041= 4959

Standard Deviation= √4959= 70.42

6 0

3 years ago