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IceJOKER [234]
3 years ago
11

a small submarine is at an elevation of -30 feet compared to sea level. what is its elevation after it ascends 9 feet? PLEASE HE

LP!!!!!!!!!!!!!!!!!!!!!! WILL GIVE BRAINLIEST AND 5 STAR TO WHOM WHO ANSWERS IT CORRECTLY!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO GUESSES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Mathematics
2 answers:
harkovskaia [24]3 years ago
7 0

Answer:

_______

-21 feet

_______

Dominik [7]3 years ago
6 0

Answer:

-21 feet

Step-by-step explanation:

-30 + 9 = -21

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Diane is 25 years older than her son Craig. The sum of their ages is 105. How old are Diane and Craig?
ankoles [38]

Answer:

Let Craigs age = x

Therefore Dianes age = 25 + x ( since she's 25 years older)

Dianes + Craigs age = (25 + x) + x = 105 (They said both of their ages sums up to 105)

25 + 2x = 105

2x = 80

x = 40

Craigs age is 40 years old.

Dianes age is 65 years old.

4 0
2 years ago
Read 2 more answers
100 POINTS AND BRAINLIEST IF RIGHT A survey asked 12 students how many portable electronic devices they have in their homes. The
Morgarella [4.7K]

Answer:

¾

Step-by-step explanation:

More than 3: 9

P(more than 3) = 9/12 = ¾

6 0
3 years ago
There are 285 people at the library. Then 127 more people come into the library
tamaranim1 [39]

Answer:

266.

Step-by-step explanation:

You want to take 285, and add 127 to that. You get 412. Subtract 146, and you get 266.

7 0
3 years ago
1. A heterozygous white-fruited squash plant is crossed with a yellow-fruited plant, yielding 200 seeds. of these seeds, 110 pro
garri49 [273]

Answer:

Part 1 , not significant

Part II, significant

Step-by-step explanation:

Given that a  heterozygous white-fruited squash plant is crossed with a yellow-fruited plant, yielding 200 seeds. of these seeds, 110 produce white-fruited plants while only 90 produce yellow-fruited plants

H_0: Both colours are equally likely\\H_a: Both colours are not equally likely

(Two tailed chi square test)

We assume H0 to be true and find out expected

If H0 is true expected would be 100 white and 100 yellow

Chi square = \Sigma \frac{(O-E)^2}{E} \\=\frac{(110-100)^2}{100} +frac{(90-100)^2}{100} \\=2

df = 1

p value = 0.152799

Since p value > 0.05 at 5% level we accept that the colours are equally likely

2)

Here observed are 1100 and 900

Expected 1000 & 1000

df = 1

Chi square = \frac{20000}{100} =200

p value <0.0001

These results are here statistically significant.

8 0
3 years ago
2 7/15÷3 2/3= anyone k ow this
avanturin [10]
U times 2 and seven and divide that by 3 and then dive 3 by 2 and that should leave u with three numbers.
514 and 1.5 times those together and there u go
105
6 0
3 years ago
Read 2 more answers
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