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2 years ago

13

SURFACE AREAS AND VOLUMES (10Th Grade)

2 answers:

Mekhanik [1.2K]2 years ago

8 0

Answer: here is ur answer

Step-by-step explanation:

sergeinik [125]2 years ago

4 0

Answer:

6L^2 + πL^2 /4

Step-by-step explanation:

the hemispherical shape is scooped out from one side of the cube, so the total surface area (SA) should include: five surface of cube + one remained side of cube subtracted the circle (r=L/2) + SA of semisphere inner curved.

Or, SA of the remaining solid = cubic SA+ semisphere SA-circle area

= 6L^ 2 + 1/2 * 4π(L/2)^2 - π(L/2)^2

= 6L^2 + (π L^2)/2 - (πL^2)/4

= 6L^2 +πL^2 /4

6L²+ πL²/4

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A local university wanted to understand what students prefer to eat during finals. They asked 1000 students, "Do you prefer chic

olga55 [171]

Answer:

$P(\text{Pizza}\ |\ \text{Female})=0.225$

Step-by-step explanation:

The two-way frequency table is attached below.

We have to calculate the probability of, a person chosen at random prefers pizza given that they are female, i.e $P(\text{Pizza}\ |\ \text{female})$

This is a conditional probability.

We know that,

$P(A\ |\ B)=\dfrac{P(A\ \cap\ B)}{P(B)}$

So,

$P(\text{Pizza}\ |\ \text{Female})=\dfrac{P(\text{Pizza}\ \cap\ \text{Female)}}{P({\text{Female}})}$

From the table,

$P(\text{Pizza}\ \cap\ \text{Female)}=\dfrac{119}{1000}$

$P({\text{Female}})=\dfrac{530}{1000}$

Putting the values,

$P(\text{Pizza}\ |\ \text{Female})=\dfrac{P(\text{Pizza}\ \cap\ \text{Female)}}{P({\text{Female}})}=\dfrac{\frac{119}{1000}}{\frac{530}{1000}}=0.225$

8 0

3 years ago

There is a sales tax of $6 on an item that costs $64 before tax. The sales tax on a second item is $8.25 . How much does the sec

bulgar [2K]

The second item would be $88 before tax since the tax rate is <span>9.375%</span>

5 0

3 years ago

Find the total cost of a $32 Uber ride with a 15% tip.

jasenka [17]

Answer:

$36.8

Step-by-step explanation:

i just calculated it!

32*15% = 4.8

32+4.8= 36.8

7 0

2 years ago

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Klio2033 [76]

Answer:

12a + 18 = 12a + 18

Step-by-step explanation:

times what's in the brackets by what's to the left of the brackets

3 0

2 years ago

The price of a bag of popcorn at a basketball game increased from $3.10 to $3.75. The concession stand sold 290 bags of popcorn.

USPshnik [31]

As a result of the price increase, an additional $188.50 was made.

The first step here is to find out the increased revenue that was earned on each bag of popcorn:

<em>= New price - old price </em>

= 3.75 - 3.10

= $0.65

The concession stand sold 290 units so the increased amount that was earned was:

<em>= Incremental revenue x Number of units sold </em>

= 0.65 x 290

= $188.50

In conclusion, an additional $188.50 was made.

<em>Find out more at brainly.com/question/13473660.</em>

4 0

2 years ago