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DanielleElmas [232]
4 years ago
11

taniqua took a test that had 20 multiple choice questions and 10 true/ false question. she got 9/10 of the multiple choice corre

sct and she got 4/5 of the true/false correct. how many multiple choice questions she got correct? and how many true/false
Mathematics
1 answer:
Bess [88]4 years ago
4 0

Answer:

18 multiple choice and 8 true/false


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Cans of regular Coke are labeled as containing 12 oz. Statistics students weighted the content of 5 randomly chosen cans, and fo
marishachu [46]

Answer: 0.0078

Step-by-step explanation:

We assume that cans of Coke are filled so that the actual amounts are normally distributed with a mean of 12.00 oz and a standard deviation of 0.12 oz.

As per given , we have

\mu=12.00\ oz  and \sigma=0.12\ oz

Sample size : n= 5

Let \overline{X} be the sample mean amount of coke in can.

Then, the  probability that a sample of 5 cans will have a mean amount of at least 12.13 oz will be :_

P(\overline{x}\geq12.13)=1-P(\overline{x}

=1-P(z

= 1-0.9922=0.0078  [By using z-table]

Hence, the required probability = 0.0078

6 0
4 years ago
PLEASE HELP!! ASAP!!
Archy [21]

Answer:

9.85

Step-by-step explanation:

you can use the Pythagoras theorem

a^2+b^2=c^2

with c the hypotenuse

9^2+4^2=c^2\\\\81+16=c^2\\\\97=c^2\\\\c=\sqrt{97}

which is aprox

9.85

ups sorry :(

7 0
3 years ago
Read 2 more answers
The population of bald eagles is decreasing 4% each year. In 2015, there were 2800 bald eagles.
Vladimir [108]

Answer:

1120 Eagles

Step-by-step explanation:

If the population of Eagles decreases by 4% percent each year, then in 2030 (which is 15 years later), the population would decrease by (4 × 15)%

that is 60%

This indicates that the population of bald eagles in the year 2030 would be 60% less of what it was in the year 2015.

so we have, \frac{60}{100} × 2800

which gives us 1680

this means that the number of bald eagles in the year 2030 would be 1680 less than the number of bald eagles in the year 2015

hence 2800 - 1680

then the answer is 1120 Bald Eagles

7 0
3 years ago
Read 2 more answers
Substitute 3x+y=4 5x-y=22
Mrac [35]
Simultaneous Equations

3x + y = 4
5x  - y = 22
The signs of the matching values aren't the same so we add the rest of the equations.
8x = 26
Divide both sides by 8 to get x = 3.25
Now substitute back into the first equation.
(3 x 3.25) + y = 4
9.75 + y = 4
Subtract 9.75 from both sides
y = -5.75
4 0
3 years ago
An article bought a television for 2500 dollars and sold for 2325dollars find a.loss b.loss%​
SpyIntel [72]

Answer:

Loss= $175

Loss %= 7%

Step-by-step explanation:

First of all, you find the difference between 2500 and 2325 which is 175, as his has decreased, it is a loss of $175

To find the percentage you do the difference over the original amount

So 175/2500 which will give you 0.07

0.07 x 100 will give you 7%

5 0
3 years ago
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