All categories

3 years ago

Hey came you help me fast!!!

Mathematics

1 answer:

Dmitrij [34]3 years ago

3 0

Answer:

Step-by-step explanation:

3 + (-7) + 2/5 + (-1/5)

You might be interested in

What is 9n=1(98-2n) equal to? Id really appreciate if you could answer both though

borishaifa [10]

N=32/3as a fraction alternative form is n=10.6

5 0

2 years ago

A teacher has 36 students who were randomly assigned to 6 rows of 6 desks. She wants to survey the students

ivanzaharov [21]

Answer:

Step-by-step explanation:

Edge 2021

5 0

3 years ago

14, 15 and 16 please

WARRIOR [948]

14). (Take π value as 22/7)
circumference = 66in
2πr = 66in
2×22/7×r = 66
r = 66×7/2×22
r = 21/2in
d = 2r => d = 2×21/2
therefore diameter of the circle = 21in

15). (Take π value as 3.14)
Circumference = 3.14m
2πr = 3.14m
2×3.14×r = 3.14
r = 3.14/3.14×2
r = 1/2m
Therefore the radius of the circle = 0.5m

16). (Take π value as 22/7)
Circumference = 33km
2πr = 33km
2×22/7×r = 33
r = 33×7/2×22
r = 21/4
d = 2r
d = 2×21/4
d = 21/2km
Therefore the diameter of the circle = 10.5km

4 0

3 years ago

WILL MARK BRAINLIEST

nordsb [41]

For# 1 the answer would be
-3/5

for #2 the answer would be
3/4

i hope this helps :)

7 0

4 years ago

The brain volumes ?( cm cubed cm3?) of 20 brains have a mean of 1083.9 1083.9 cm cubed cm3 and a standard deviation of 122.2 122

Colt1911 [192]

Answer:

Range: (844.9,1333.7)

A brain volume of 1348.3 cm cubed can be considered significantly high.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1083.9 cm cubed

Standard Deviation, σ = 122.2 cm cubed

Range rule thumb:

This rule state that the the range of data is four times the standard deviation of the data.

$\text{Range} = 4\times \sigma = 4\times 122.2 = 488.8$

Upper Limit:

$\mu + 2\sigma = 1089.3 + 2(122.2) = 1333.7$

Lower limit:

$\mu - 2\sigma = 1089.3 - 2(122.2) = 844.9$

Since, 1348.3 does not lie in the range (844.9,1333.7), a brain volume of 1348.3 cm cubed can be considered significantly high.

6 0

4 years ago