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Irina18 [472]
2 years ago
7

Multiply 3.42 × 16.5 =

Mathematics
2 answers:
snow_lady [41]2 years ago
8 0
56.43 is the answer
liraira [26]2 years ago
3 0

Answer:

56.43

Step-by-step explanation:

3.42×16.5=56.43

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A crate of pears that usually costs $50 is on sale for 10% off. What is the sale price for the crate of pears?​
lorasvet [3.4K]
Answer:5
Explaining:
10% of 50
= 10%=10/100 = 0.1
= 0.1 (x) times 50
= 5
3 0
2 years ago
Various studies indicate that approximately 11% of the world's population is left handed. You think this number is actually high
Irina-Kira [14]

Answer:

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

d. z= 1.3322

Step-by-step explanation:

We formulate our hypothesis as

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

According to the given conditions

p`= 31/225= 0.1378

np`= 225 > 5

n q` = n (1-p`) = 225 ( 1- 31/225)= 193.995> 5

p = 0.4 x= 31 and n 225

c. Using the test statistic

z=  p`- p / √pq/n

d. Putting the values

z= 0.1378- 0.11/ √0.11*0.89/225

z= 0.1378- 0.11/ √0.0979/225

z= 0.1378- 0.11/ 0.02085

z= 1.3322

at 5% significance level the z- value is ± 1.645 for one tailed test

The calculated value falls in the critical region so we reject our null hypothesis H0 : p ≤ 0.11 and accept  Ha : p >0.11 and  conclude that the data indicates that the 11% of the world's population is left-handed.

The rejection region is attached.

The P- value is calculated by finding the corresponding value of the probability of z from the z - table and subtracting it from 1.

which appears to be 0.95 and subtracting from 1 gives 0.04998

8 0
3 years ago
a sculpture is formed from a cylinder resting on top of a cuboid. the cylinder has a radius 40cm and height 70cm. the cuboid mea
frosja888 [35]

<u>Answer-</u>

\boxed{\boxed{\text{Mass}=10.0447256\ ton}}

<u>Solution-</u>

The dimensions of the cuboid is, 80×80×140 cm

So, its volume will be =80\times80\times140=896000cm³

The dimensions of the cylinder is, radius = 40cm, height = 70cm

So, its volume will be \pi r^2h=\pi\times40^2\times70=351792cm³

Total volume,

V=V_{\text{Cylinder}}+V_{\text{Cuboid}}\\\\=351792+896000\\\\=1247792\ cm^3

As we know,

\Rightarrow \text{Density}=\dfrac{\text{Mass}}{\text{Volume}}

\Rightarrow \text{Mass}=\text{Density}\times \text{Volume}

\Rightarrow \text{Mass}=8.05\times 1247792=10044725.6\ g

\Rightarrow \text{Mass}=10044725.6\times 10^{-6}=10.0447256\ ton


8 0
3 years ago
Whats the distance between {-4 , 12} and {18 , 12}
belka [17]
You would need to use the distance formula.
Distance = Sqrt((x2-x1)^2+(y2-y1)^2)
Plug in your numbers
Distance = Sqrt((12+4)^2+(12-18)^2)
Distance = 17.09
4 0
3 years ago
Read 2 more answers
Find the original price of a pair of shoes if the sale price is $144 after a 25% discount.
k0ka [10]

Answer:

$192

Step-by-step explanation:

1: Subtract the discount from 100% then divide the sale price by this number (100%-25%=75%, $144/75%=$192)

hope this helped

4 0
3 years ago
Read 2 more answers
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