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Vesna [10]
3 years ago
9

If I get an 85 on a test but I missed 6 questions how many questions are there?

Mathematics
2 answers:
Afina-wow [57]3 years ago
7 0
There are 40 questions on the test, 10% of 40 is 4 and 5% is 2 so 4+2=6 so you missed 6 out of 40 questions

aliya0001 [1]3 years ago
7 0
If you mean 85% then you got 15% wrong.
6 questions is 15% of the test. x is the total amount of questions.
6=.15(X)
6/.15=x
x=40
answer: 40 questions

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John is skiing on a mountain with an altitude of 1200 feet. The angle of depression is 21 About how far does
Agata [3.3K]

Answer:

John ski down the mountain is 1285.37 feet.

Step-by-step explanation:

Given : John is skiing on a mountain with an altitude of 1200 feet. The angle of depression is 21.

To find : About how far does  John ski down the mountain ?

Solution :

We draw a rough image of the question for easier understanding.

Refer the attached figure below.

According to question,

Let AB be the height of mountain i.e. AB=1200 feet

The angle of depression is 21 i.e. \theta=21^\circ

We have to find how far does  John ski down the mountain i.e. AC = ?

Using trigonometric,

\cos\theta = \frac{AB}{AC}

\cos(21)= \frac{1200}{AC}

AC=\frac{1200}{\cos(21)}

AC=1285.37

Therefore, John ski down the mountain is 1285.37 feet.

7 0
4 years ago
The mean of this data set is 9. What number is missing?<br><br> 11,20,_,3,1
kherson [118]
Let the missing number be x

Mean is the total sum of data over the number of data therefore,

(11+20+x+3+1) / 5 = 9
Then simplify
(35 + x) / 5 = 9
Then multiply 5 to both sides
35 + x = 45
Then subtract 35 to both sides to find x
X= 10

Hope this helps!

7 0
2 years ago
the temperature in winter night was -23 degrees Fahrenheit the temperature Rose by 5° when the sun rose when the sunset again th
expeople1 [14]

So we have -23 degrees to start

Then add 5 to it

It becomes -23+5=-18

Now subtract 7 from that so -18-7=-25 degrees

Hope this helps

8 0
3 years ago
151 1/2 over 25 1/4=6
Setler79 [48]

Answer: 6 = 6

Step-by-step explanation:

8 0
2 years ago
What is the answer to <br> 1+38*225(12/77)
Neporo4naja [7]
1+38*225(12/77)
1+38*225*6.41
1*8550*6.41
1+54,805.5
54,806.5
Use pemdas to solve it
4 0
3 years ago
Read 2 more answers
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