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3 years ago

Please answer there's more on my account questions

Mathematics

2 answers:

navik [9.2K]3 years ago

8 0

Answer:

The answrs are: (1) 68 (2) 10g

zubka84 [21]3 years ago

5 0

Answer:

The answer is 68

Step-by-step explanation:

WHat you have to do is follow PEMDAS

First you multiply 2 by 36 which equals 72

Then your equation will look like this: 72-24 ÷6

Then you are going to divide 24 by 6 which will then equal 4

After that your equation will be 72-4

Which will then will equal your final answer which is 68

I hope his helps

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0.9b + 12 = 0.8b - 9

Charra [1.4K]

Answer:

0.9b+12=0.8b-9

0.9b+0.8b= -9-9

1.7b=-21

=-12.352

3 0

3 years ago

The 6 participants in a 200-meter dash had the following finishing times (in seconds): 27, 28, 27, 25, 24, 31 Assuming that thes

ollegr [7]

Answer:

Standard deviation of the population is 2.4

Step-by-step explanation:

Finishing times of 6 participants in 200 meter dash has been given as 27, 28, 27, 25, 24, 31.

We have to calculate the standard deviation of the population formed by these timings.

Formula of standard deviation is

$\sigma=\sqrt{\frac{\sum(x-\mu)^{2}}{n} }$

where $\sigma$ = standard deviation

$\mu$ = mean of the data

n = number of scores in the sample

Mean of given data = $\frac{27+28+27+25+24+31}{6}=27$

$\sum(x-\mu)^{2}=(27-27)^{2}+(28-27)^{2}+(27-27)^{2}+(25-28)^{2}+(24-27)^{2}+(31-27)^{2}$

= $0+1+0+4+9+16$

= 30

Now $\frac{\sum(x-\mu)^{2}}{n}=\frac{30}{6}=5$

$\sigma=\sqrt{5}$ = 2.236 ≈ 2.24

Therefore, standard deviation of the given data is 2.24

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3 years ago

Joey’s height and Keith’s height combined

TiliK225 [7]

Bro what??? how tall are they??

4 0

3 years ago

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tiyleah has a cousin fantasia in france . both families recently bought new cars and the two girls are comparing how fuel effici

Kay [80]

Answer:

Fantasia's family's car is more fuel-efficient.

Step-by-step explanation:

Given that, Tiyleah's family's car is getting 40 miles per gallon, and Fantasia's family's car uses 7 liters per 150 km.

The comparison can be done by observing the distance traveled by the cars in an equal amount of fuel. The car which covers more distance in an equal amount of fuel is more fuel-efficient.

First, convert the given units to have the same unit of measurement,

As 1 gallon =3.7854 liters and 1 mile = 1.609344 km

So, 40 miles =40 x 1.61=64.40 km

Now, The distance covered by Tiyleah's family's car is 64.40 km in 3.7854 liters.

So, the distance covered by Tiyleah's family's car in 1 liter of fuel is $\frac{64.40}{3.7854}=17.01$ km

In a similar way,

As Fantasia's family's car uses 7 liters per 150 km.

So, the distance traveled by Fantasia's family's car in 1 liter of fuel =150/7=21.43 km

Observe that, in 1 liter of fuel, Tyleah's family's car covered 17.01 km while Fantasia's family's car covered 21.43 km which is more.

Hence, Fantasia's family's car is more fuel-efficient.

5 0

4 years ago

What ratio is equivalent to 3/6

earnstyle [38]

Answer: 1/2, 4/8...

Step-by-step explanation: because the least factor is 1/2 so all the numbers and their multiplicity of 2.

7 0

4 years ago

Read 2 more answers