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4 years ago

It's math again! Please help!

Mathematics

1 answer:

seraphim [82]4 years ago

7 0

4. $4x^{3}-6 x^{2}+9$

5. $-2x^3+2x^2+9x$

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HELP PLEASE WITH THIS ASAP ASAP

Georgia [21]

Answer:

Step-by-step explanation:

62 - 42 = 20

20 / 2 = 10

42 + 10 = 52

52... i think :\

5 0

2 years ago

In Louisiana, the coldest temperature ever recorded is -16°F. That is much warmer than in

Anon25 [30]

Answer:

it is 53 degrees warmer than Utah

6 0

3 years ago

at one scholl at prep level there were 5 set of twins,two sets of triplets and one set of quadruplets starting school this year.

IrinaK [193]

Answer: The fraction of set of twins= $\frac{5}{8}$

The fraction of sets of triplets= $\frac{2}{8}$

The fraction of set of quadruplets= $\frac{1}{8}$

Step-by-step explanation:

Given: The number of set of twins=5

The number sets of triplets = 2

The number of set of quadruplets=1

⇒ The total number of multiple birth students =5+2+1=8

∴ The fraction of set of twins= $\frac{\text{set of twins}}{\text{ total multiple birth students}}=\frac{5}{8}$

∴ The fraction of sets of triplets= $\frac{\text{set of triplets}}{\text{ total multiple birth students}}=\frac{2}{8}$

∴ The fraction of set of quadruplets= $\frac{\text{set of quadruplets}}{\text{ total multiple birth students}}=\frac{1}{8}$

3 0

3 years ago

A company manufacturing oil seals wants to establish X and R control charts on the process. There are 25 preliminary samples of

alisha [4.7K]

Answer:

A ) i) X control chart : upper limit = 50.475, lower limit = 49.825

ii) R control chart : upper limit = 1.191, lower limit = 0

Step-by-step explanation:

A) Finding the control limits

grand sample mean = 1253.75 / 25 = 50.15

mean range = 14.08 / 25 = 0.5632

Based on X control CHART

The upper control limit ( UCL ) =

grand sample mean + A2* mean range ) = 50.15 + 0.577(0.5632) = 50.475

The lower control limit (LCL)=

grand sample mean - A2 * mean range = 50.15 - 0.577(0.5632) = 49.825

Based on R control charts

The upper limit = D4 * mean range = 2.114 * 0.5632 = 1.191

The lower control limit = D3 * mean range = 0 * 0.5632 = 0

B) estimate the process mean and standard deviation

estimated process mean = 50.15 = grand sample mean

standard deviation = mean range / d2 = 0.5632 / 2.326 = 0.2421

note d2 is obtained from control table

6 0

3 years ago

The unit of ratio is expressed in <br> a) Metre <br> b) Gram

GaryK [48]

The unit of ratio is expressed as none. Ratio comprises of similar type of quantities so the units cancel out each other and thus there is no unit for a ratio. There is no unit for ratio. The numbers in the ratio will be of same unit - the unit can be meter or gram or litre or any such unit.

8 0

3 years ago