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Sedbober [7]
3 years ago
11

I need help!!!

Mathematics
2 answers:
Nataly_w [17]3 years ago
6 0

Answer:

y = 3

Step-by-step explanation:

8(y + 2) = 40 \\ y + 2 =  \frac{40}{8}  \\ y + 2 = 5 \\ y = 5 - 2 \\ y = 3

grigory [225]3 years ago
3 0

Answer:

8(y+2)=40

8×y+8×2=40

8y+16=40

8y+16-16=40-16

8y=24

y=24÷8

y=3

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A student factors 3x2 – 12 to the following.
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Answer:  The Expression is Equivalent, However, NOT completely factored.

Step-by-step explanation:

3x^2     -     12  

Following:

3 ( x^2    -    4   )

Factor:

3x^2   -  12

Factor Out Common Term 3:

3 ( x^2    -  4  )  =  3 (x^2  -  4 )

Factor:

x^2  -  4

( x  +   2 )  ( x   -  2 )

Answer:

3 ( x  +  2) ( x  -  2)

Hence, The Expression is Equivalent, However,  Wasn't Completely Factored.

Hope that helps!

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3 years ago
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______To test the efficacy of vitamin C in preventing colds, army recruits are randomly assigned to one of two groups: one in wh
kipiarov [429]

Answer:

This type of study design is

Clinical Trial

Step-by-step explanation:

  • It is clinical trial because in this study design a treatment is given to the individuals and then we observe this treatment. In this experiment, we are studying the effects by giving 500 mg of Vitamin and Placebo to the soldiers.
  • It is not a cross-sectional study because this type of study is used to analyze characteristic of the population depending upon data but this study is not used for disease.
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8 0
3 years ago
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If g(x)=f(x+k), what is the value of k?
lianna [129]
G(x) is f(x) shifted left by (4 -(-2)) = 6 units.

The value of k is 6.
6 0
3 years ago
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The same Honey is sold in two different size jars. Large jar= 540g for £4.10 Small jar= 360g for £2.81. By considering the amoun
Ray Of Light [21]

Answer:

From our calculations the large jar is the best value for money because a penny buys more honey

Step-by-step explanation:

<h2>In this problem we are expected to determine which purchase of honey is the cheapest ? large jar or small jar ?.</h2><h2 />

We will determine which has the best value for money using the quantity a pound can purchase.  

firstly for the large jar.

if £4.10 will purchase 540g of honey then,

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cross multiplying to find x will have

x=  \frac{1.00*540g}{4.10}

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secondly for the small jar

if £2.81 will purchase 360g of honey then,

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cross multiplying to find x will have

x=\frac{1.00*360g}{2.81}\\x= 128.1gram

Hence for the small jar a penny would buy 128.1g of honey

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