ANSWER ASAPPPP PLEASE BEING TIMEDDDDDDD

vagabundo [1.1K]

Below is step-by-step in how i got my answer.6.3−2(1.5c+4.1)Distribute:=6.3+(−2)(1.5c)+(−2)(4.1)=6.3+−3c+−8.2Combine Like Terms:=6.3+−3c+−8.2=(−3c)+(6.3+−8.2)=−3c+−1.9Your answer is in Bold
~Good Luck~

6 0

3 years ago

What type of muffin coast the least?

andre [41]

A). 12 ÷ $7.20 = about $1.67 per muffin
b). 8 ÷ $4.40 = about $1.81 per muffin
c). 6 ÷ $4.50 = about $1.33 per muffin

type C costs the least per muffin

7 0

3 years ago

Please answer me bis two fifths of c. 4a = 30 Work out the ratio a:b:c Give your ans

irina [24]

b is two fifths of c, so we make this a ratio with c = 1.

The ratio of b:c is 2/5 : 1

We also have 4a = 3c, rewrite this ratio so c is 1 by dividing both sides by 4,

so we get the ratio of a to c as 3/4 : 1

Now we get the a:b:c ratio of 3/4 : 2/5 : 1 now we can change the fractions to whole numbers, first by multiplying the 3 numbers by 4 to get get rid of the denominator of 4 in a:

3 : 8/5 : 4

Now multiply the 3 numbers by 5 to remove the denominator of 5 in b:

15 : 8 : 20

Now we can check using the equations:

b is 2/5 of c: 20 x 2/5 = 40/5 = 8 This is true.

4a = 3c: 4(15) = 3(20) = 60 = 60, this is also true.

The ratios is 15 : 8: 20

7 0

3 years ago

Extreme cold and hot temperatures are known to affect the operation of electronic components. Winter is approaching and you are

Musya8 [376]

Answer:

A 95% confidence interval for the true mean minimum temperature that will damage an iPod is between 2.55°F and 7.45°F

Test statistic(Z) = 2.31

P-value = 0.0104

Step-by-step explanation:

Step 1

Null hypothesis: The average damaging temperature of nine iPods is 5°F

Alternate hypothesis: The average damaging temperature of nine iPods differs from 5°F

Step 2

Mean=5°F, Sd=3, df=n-1=9-1=8

The t-value corresponding to 8 degrees of freedom and 95% confidence level (5% significance level) is 2.306

Confidence Interval(CI) = (mean + or - t×sd/√n)

CI = (5 + 2.306×3/√8) = 5 + 6.918/2.828= 5+2.45=7.45°F

CI = (5 - 2.306×3/√8) = 5-2.45 = 2.55°F

Z = (sample mean - population mean)/(sd÷√n) = (5-2.55)/(3÷√8) = 2.45/1.061 = 2.31

Step 3

Using the standard distribution table, the cumulative area to the left of Z = 2.31 is 0.9896

P-value = 1 - 0.9896 = 0.0104

Step 4

Conclusion: A 95% confidence interval for the true mean minimum temperature that will damage an iPod is between 2.55°F and 7.45°F

7 0

3 years ago

What does the degree of a polynomial mean?

serg [7]

__Award Brainliest if helped!

Layman : The number of the largest power

Say $x^{2} +x+3$ , Degree is 2 (X^2)
and if $x^{3} + x^{2} +x+3$ , the Degree is 3.

Technical : Largest exponent of variable.

5 0

3 years ago