Tim answered all the questions on his math test but got 10 answers wrong. He received 4 points for every correct answer, and the
re was no penalty for wrong answers. His score was 76 points.
2 answers:
Let number of answers correctly given by Tom = x
Number of Incorrect answers = 10
Marks given to Tim for every correct answer = 4 Marks
Marks for incorrect answer= 0
Total Score = 76
The equation , when all the above statement are combined together
→4 x + 10 × 0 = 76
→ 4 x = 76
x = 19
Number of Right Answers = 19
Number of Wrong Answer= 10
Total Question = 19 + 10= 29
Solve this Equation :
Here "q" is the number of correct answer.
4(q-10)=76
divide both sides by 4
1/4*4(q-10)=76/4
q-10=19
q-10+10=19+10
add 10 to both sides
q=29
So Tim answers correct to 29 questions.
Hope this helps !
Photon
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Answer:
im Pretty sure it’s 20 I did this awhile ago
Step-by-step explanation:
The value of x is 13 for the first attachment.
Presumably you want to find
, where
presumably denotes the complement of
. We have
and since
, we have
the set of all values in
*not* in
; that is,
.
Now
The Answer is 10/12 because you need to multiply both the numerator and the denominator by 2
The formula for this problem is A=P(1+(r/n))^nt.
A is what you're trying to find. P=400 r=0.06 t=3 n=1, since it's compounded once per year.
Now plug in those values to get A=400(1+(0.06/1))^1*3
I get an answer of $476.41