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irina [24]
3 years ago
14

Please help solve Math again

Mathematics
2 answers:
pishuonlain [190]3 years ago
7 0

Answer: The Answer i believe is B i would think.


Step-by-step explanation:


PolarNik [594]3 years ago
3 0

Answer:

The answer is A and b=18.

Step-by-step explanation:

27=b+9 and then subtract 9 from each side to get b=18

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math question: i write 17 text messages to friends each week for x weeks in a row. write an expression for total members
8090 [49]

Answer:

17x = y

Step-by-step explanation:

Since we know that you write 17 text messages a week. 17 will be our constant number, now then after you said for x weeks.

Meaning that x would be our variable cause we can put an input of any number, then put it next to 17 because that is how many times you text a week.

17x = y

17 (how many times you text per week) x (how many weeks) = y (texts in total)

6 0
3 years ago
7. Blake made a rectangular table for his dining room. The sides of the table are 12 feet and 4 feet. What is the
Naddik [55]

Answer: 12.65.

Step-by-step explanation:

8 0
3 years ago
HELP Me Pls ! Math !
horsena [70]

Answer:

The Second One

Step-by-step explanation:

4x+6y <(underlined) 10

6 0
3 years ago
The electric cooperative needs to know the mean household usage of electricity by its non-commercial customers in kWh per day. A
Montano1993 [528]

Answer: (14.4, 17.2)

Step-by-step explanation: We are to construct a 98% confidence interval for mean household usage of electricity.

We have been given that

Sample size (n) = 872

Sample mean (x) = 15.8

Population standard deviation (σ) = 1.8

The formulae that defines the 98% confidence interval for mean is given below as

u = x + Zα/2 × σ/√n...... For the upper limit

u = x - Zα/2 × σ/√n...... For the lower limit

Zα/2 = critical value for a 2% level of significance in a two tailed test = 2.33

By substituting the parameters we have that

For upper tailed

u = 15.8 + 2.33 × (1.8/√872)

u = 15.8 + 2.33 (0.6096)

u = 15.8 + 1.4203

u = 17.2

For lower tailed

u = 15.8 - 2.33 × (1.8/√872)

u = 15.8 - 2.33 (0.6096)

u = 15.8 - 1.4203

u = 14.4

Hence the 98% confidence interval for population mean usage of electricity is (14.4kwh, 17.2kwh)

4 0
3 years ago
An electricity company estimates that Daryl will spend £840 on electricity next year.
ser-zykov [4K]

Answer:

241.5 pounds

Step-by-step explanation:

840 + 15%  = 966 (pounds)

966/4 = 241.5 (pounds)

3 0
3 years ago
Read 2 more answers
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