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coldgirl [10]
3 years ago
9

Help with the ones that aren’t answered plz

Mathematics
2 answers:
Delicious77 [7]3 years ago
7 0

-12 - (-5) = -7

-13 - (-5) = -8

-20 - (-4) = -16

-22 - (-11) = -11

10 - (-12) = 22

-3 - 2 = -5

-4 - 6 = -10

-5 - 5 = -10

0 - 6 = -6

il63 [147K]3 years ago
4 0
All of her answers are correct ^
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Can someone help me please
Allisa [31]

Answer:

31.25

Step-by-step explanation:

Divide 250 by 8=31.25

8 0
2 years ago
HURRY PLEASE I WILL FAIL MATH IF I DON'T GET THIS RIGHT!! NO JOKE PLEASE HELP
Usimov [2.4K]
A) x + y = 2
B) x * y = -8
B) y = -8 / x  we can substitute this into equation A
A) x + -8 /x = 2 multiplying both sides by "x"
A) x² -8 = 2x
x² +2x -8 = 0
(x + 4) * (x -2)
The 2 numbers are -4 and 2


6 0
3 years ago
How many subsets of the set $\{1,2,3,4, 5, 6, 7, 8, 9, 10\}$ contain the number 5?
lianna [129]
For the given set of numbers:
<span>{1,2,3,4, 5, 6, 7, 8, 9, 10}
the number of elements
n=10
the total number of subsets is given by:
2^10=1024

</span>
6 0
3 years ago
The partial pressure of oxygen PaO2 is a measure ofthe amount of oxygen in the blood. Assume that the distribution ofPaO2 levels
Rus_ich [418]

Answer: a) 0.8665

b) 0.8190

Step-by-step explanation:

Given : The partial pressure of oxygen PaO2 is a measure ofthe amount of oxygen in the blood. Assume that the distribution ofPaO2 levels among newborns has a \mu=38 mmHg and \sigma= 9 mmHg.

If we take a random sample n= 25 newborns, then  using formula z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}, we have

At x= 36

z=\dfrac{36-38}{\dfrac{9}{\sqrt{25}}}\approx-1.11

At x= 41

z=\dfrac{36-38}{\dfrac{9}{\sqrt{25}}}\approx1.67

Using table for z-values, the probability that the sample mean will be greater than 36 :

P(z>-1.11)=1-P(\leq-1.11)=1-(1-P(z\leq1.11))=P(z\leq1.11)=0.8665004\approx0.8665

The probability that the sample mean will be between 36 and 41 :-

P(-1.11

4 0
3 years ago
The whale swims down 300 feet to feed. What is the whale elevation now
Luba_88 [7]

Answer:

If the whale swims 300 feet below the surface it would be -300 feet below the sea level

Step-by-step explanation:

5 0
3 years ago
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