3 years ago

I need help please?!!!

Mathematics

2 answers:

nydimaria [60]3 years ago

5 0

Answer: 27.5

Step-by-step explanation:

14.5 + 13 = 27.5

loris [4]3 years ago

4 0

The answer should be 27.5 bc u add them together.

You might be interested in

. The temperature on Monday was −5∘C . By Tuesday the temperature rose to −2∘C. Find the change in temperature.

Alekssandra [29.7K]

Answer: $3^{\circ}C$

Step-by-step explanation:

Given

The temperature on Monday was $-5^{\circ}C$

By Tuesday, it becomes $-2^{\circ}C$

Change in temperature is the difference between the two temperatures.

$\Rightarrow \Delta T=-2-(-5)\\\Rightarrow \Delta T=-2+5\\\Rightarrow \Delta T=3^{\circ}C$

Therefore, the change in temperature is $3^{\circ}C$ .

3 0

3 years ago

Sue and Cathy have $20 left for a cab fare home.the cab fare is $3 per mile plus a $2 fixed charge.what is the maximum number of

PIT_PIT [208]

Answer:

They would by able to go 4 miles.

Step-by-step explanation:

7 0

3 years ago

As student received a 75% on an exam. If there were 20 questions on the exam which ratio would show the number of questions answ

sergejj [24]

75% times 20=15 so he got 15 correct

7 0

4 years ago

Read 2 more answers

The batteries from a certain manufacturer have a mean lifetime of 850 hours, with a standard deviation of 70 hours, assuming tha

matrenka [14]

To answer (a), we will need to find the Z value for 710 hours and 990 hours.

$\begin{gathered} For\text{ 710} \\ Z\text{ = }\frac{x-\mu}{\sigma} \\ \text{ = }\frac{710-850}{70} \\ \text{ = -2} \\ p\text{ =0.0228 } \\ For\text{ 990:} \\ Z\text{ = }\frac{990-850}{70} \\ \text{ =2} \\ p\text{ = 0.9772} \end{gathered}$ $\begin{gathered} To\text{ find P \lparen–2 \le Z \le 2\rparen} \\ =\text{ 0.9772 -0.0228} \\ =\text{ 0.9544} \\ =95.44\% \end{gathered}$

B) 68% of data lies between one standard deviation of the mean.

850 +70 = 920

850 - 70 = 780

5 0

1 year ago

What is ( n^2+6n-4)(2n-4)

ludmilkaskok [199]

Answer: 2

−

Step-by-step explanation:

3 0

3 years ago