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Natalija [7]
4 years ago
14

Misty took a multiple choice test in science that had 50 questions. If the relationship between the number she got correct and t

he number she got incorrect is 7:3, and she got 9 incorrect, how many did she get correct?
Mathematics
1 answer:
Alex4 years ago
4 0
In this case, the total number of questions in the test is 50. The possible outcome for the question would be answered wrong, answered correctly or not answered. To know the amount of the correct answer, you need to multiply the incorrect with correct/incorrect ratio. The equation would be:
correct answer: 9 answer * 7/3= 21 answer.

Then for this test misty has:
9 incorrect answer
21 correct answer
20 blank/ not answered
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Thursday, Jamal made y dollars per hour for 9 hours of
denis23 [38]

Answer:

The expression for the total amount of Jamal earned is              $ (14 y + 55)

Step-by-step explanation:

Given as :

The bonus amount earn by Jamal = $ 55

According to question

On Thursday

∵ For 1 hour of work , Jamal earn y dollars

∴ For 9 hours of work , Jamal will earn 9 × y = 9 y dollars

On Friday

∵ For 1 hour of work , Jamal earn y dollars

∴ For 5 hours of work , Jamal will earn 5 × y = 5 y dollars

So, The total earning on both days of his work = 9 y + 5 y = 14 y dollars

Since Jamal also earn bonus of $ 55

So, Total earning of Jamal including bonus = 14 y + $ 55

Hence The expression for the total amount of Jamal earned is  $ (14 y + 55) Answer

6 0
3 years ago
(08.05, 08.06 MC)
babunello [35]

A=16x²-8x+1

16x²-8x+1=l²

(16x²-4x)-(4x+1)=l²

4x(4x-1)-1(4x-1)=l²

x=1/4 or 1

Therefore

since x=1/4

l²=1/4=>l=>√(1/4)

l=1/2

since x=1

l²=1=>l=>√1

l=1

Therefore the length of each sides

1 or 1/2

6 0
3 years ago
This is my question it is in the screen shot please help me.
PolarNik [594]
4 in = 10.2 cm
7kg = 15.4 lbs
6 gal = 22.7 L
66 ft = 19.8 m
3 0
3 years ago
A magazine printed photos of three celebrities along with three photos of the celebrities as babies. The baby pictures did not i
Anna35 [415]

The probability of matching the first one correctly is  1/3 .
Then there are only two baby-pix left, so ...
The probability of matching the second one correctly is  1/2 .
Then there's only one baby-pic left, so ...
The probability of matching the third one correctly is  1 .

So the probability of matching all three correctly is

                (1/3) x (1/2) x (1)  =  1/6  =  (16 and 2/3) percent .
 
5 0
4 years ago
Read 2 more answers
How do you find the length of the short leg on a 30°-60°-90° triangle when all you have is the long leg?
tatyana61 [14]
The ratios of the sides
hypotnuse=2x
x=short leg (oposite 30)
x√3=long leg (oposite 60)

long leg=x√3
to find x, divide by √3
longleg/√3=short leg=x
rationalize denomenator, times √3/√3
(longleg√3)/3=short leg

the legnth of the short leg is
(longleg√3)/3

5 0
4 years ago
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