All categories

3 years ago

Find the sum of -822 + 3 and -92? + 3x – 3.

Mathematics

1 answer:

erik [133]3 years ago

8 0

Answer:

Step-by-step explanation:

= (-822 + 3) + (-92)

= ( -819) + (-92)

= -911

HOPE THIS HELPS YOU

Follw me = 10 thanks

Mark as brainliest = 10 thanks

1 thanks to me = 2 thanks

You might be interested in

4 is what percent of 75?

arsen [322]

2.96 or 18.75 is the answer im leaning towards 2.96 though

5 0

2 years ago

Read 2 more answers

How would I solve this? I tried and I got a reallly crazy number... I think I messed up somewhere. The question is... Jack and M

Lera25 [3.4K]

37 x 10 = 370
21 x 11 = 231

Mark worked 21 Hours, Jack worked 37 Hours.

4 0

3 years ago

Read 2 more answers

Write the series using summation notation. Then find the sum of the series.

ivolga24 [154]

Hello, please consider the following.

$\displaystyle 1+2+3+...+12=\sum_{k=1}^{k=12} {k}=\dfrac{12*13}{2}=6*13=78$

For the second we will need to put on the same denominator.

$\displaystyle \dfrac{1}{2}+\dfrac{1}{4}+...+\dfrac{1}{14}=\sum_{k=1}^{k=7} {\dfrac{1}{2k}}\\\\=\dfrac{1}{2}\dfrac{420+210+140+105+84+70+60}{5*7*3*2*2}\\\\=\dfrac{1}{2}\dfrac{1089}{420}\\\\=\dfrac{1089}{840}=1.296429...$

Thank you.

3 0

3 years ago

I GIVE A BRAINLY. What is the volume of the solid figure? A. 625 in B. 750 in C. 800 D. 1,250

castortr0y [4]

Answer: B

Step-by-step explanation: Im sorry if I am wrong A and B are pretty good answer but I would stick to B

3 0

2 years ago

Read 2 more answers

Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follow

guajiro [1.7K]

Answer:

a) x = 1.52

b) s = 1.16

Step-by-step explanation:

We have that:

5 students watched 0 movies.

9 students watched 1 movie.

5 students watched 2 movies.

5 students watched 3 movies.

1 student watched 4 movies.

(a) Find the sample mean x.

Sum divided by the number of students. So

$x = \frac{5*0 + 9*1 + 5*2 + 5*3 + 1*4}{5 + 9 + 5 + 5 + 1} = \frac{38}{25} = 1.52$

(b) Find the approximate sample standard deviation, s.

Standard deviation of the sample.

Square root of the sum of the squares of the values subtracted from the mean, divided by the sample size subtracted by 1. So

$s = \sqrt{\frac{5*(0-1.52)^2 + 9*(1-1.52)^2 + 5*(2-1.52)^2 + 5*(3-1.52)^2 + 1*(4-1.52)^2}{24}} = \sqrt{\frac{32.24}{24}} = 1.16$

3 0

2 years ago