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oksian1 [2.3K]
3 years ago
5

Anna scored 27 questions right on her test. She scored a 90%. How many questions were on the test?​

Mathematics
2 answers:
-BARSIC- [3]3 years ago
7 0

Answer:

30

Step-by-step explanation:

divide 27 by 9

you get 3

add 3 to 27 because 3 = 10%

30 questions

hope this helped! :)

valkas [14]3 years ago
6 0

Answer: 30

Step-by-step explanation: 30 times .9 is 27, meaning that 90%of her grade would be 27.

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Five and one eight multiplied by 16
algol13
Ima be honest I used a calculator but the answer is 82
8 0
3 years ago
Read 2 more answers
What is the length of the diameter of a circle if the endpoints of the diameter are at the points (4, 2) and (–6, –1)?
Oksana_A [137]

Answer:

d= 10.44030651

Step-by-step explanation:

The diameter is the length  between the endpoints.  We can find it using the distance formula.

d= sqrt((x2-x1)^2+(y2-y1)^2 )

d = sqrt((-6-4)^2+ (-1-2)^2)

d = sqrt((-10)^2+(-3)^2)

d= sqrt(100+9)

d = sqrt(109)

d= 10.44030651

3 0
3 years ago
An investment advisor believes that there is a 60% chance of making money by investing in a specific stock. If the stock makes m
inessss [21]

Answer:

\mathbf{ 0.6 \times 0.5 = 0.3 }

Step-by-step explanation:

Let M denote the event that the stock makes money and D denote the event that the stock pays dividends.

It is given that P(M) = 0.6

Observe that the two events M and D are not independent because if the stock doesn't make money then it will not pay dividends. Therefore the event D | M^{c} (D given M does not occur) is a null event, i.e

P(D|M^{c}) = 0

It is also given that,

P(D|M) = 0.5

Recall that : P(D|M) = \frac{P(D \cap M)}{P(M)}

Here, we are required to find P(D \cap M)

P(D \cap M) =P(D|M) \times P(M)= 0.5 \times 0.6 = 0.3

7 0
3 years ago
Ms. Fitzgerald had 2 1 /4 gallons of fruit punch. She served 3 /8 gallon of the fruit punch
Luda [366]

Answer:

1 7/8

Step-by-step explanation:

1/4=2/8

2+2/8-3/8= 1 7/8

8 0
2 years ago
Help! In parallelogram LMNO below, find the length of MO
pashok25 [27]

Answer:

Step-by-step explanation:

The diagonals of a parallelogram bisect each other.

5y - 8 = 3y + 1              Add 8 to both sides

5y = 3y + 1 + 8             Subtract 3y from both sides

5y - 3y = 9                   Combine

2y = 9                          Divide by 2

2y/2 =9/2  

y = 4. 5

5y - 8 =

5(4.5) - 8 =

22.5 - 8 =

14.5

That represents 1/2 of MO

MO = 2 * 14.5

MO = 29

5 0
3 years ago
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