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Artemon [7]
3 years ago
9

At a contest,every correct answer earns you 5 points and every incorrect answer will deduct 3 points. Jessica has a score of 66.

If she answered 3 questions incorrectly, how many correct answers did she have?
Mathematics
1 answer:
BigorU [14]3 years ago
7 0

Answer:

15

Step-by-step explanation:

66=5x-3y

x=# right

y=# wrong

y=3

66=5x-9

75=5x

x=15

You might be interested in
Using the graph, predict how many people will be needed to eat 300 pounds of meal?​
kkurt [141]

Answer:

100 people

Step-by-step explanation:

if u notice the points are (2,6) and (6,18). 6÷2=3 and 18÷6=3, so if you catch this pattern than you can do 300÷3=100

8 0
3 years ago
How do you do this and what are the answers
scoray [572]
I can answer 1 to 4...
The area of a circle can be found by \pi r^{2}. Reminder: \pi = 3.14 (usually used when finding out the area of a circle)

1. 4^{2} = 16
\pi *16 or 3.14 * 16 = 50.24
50.24/4=12.56

2. 6^{2} = 36
\pi *36 or 3.14 * 36 = 113.04
113.04/10=11.304

(Not really sure if this is correct) 3. 2^{2}=4
\pi *4 or 3.14 * 4
12.56/2.66666667=11.70999999

4. 6^{2}=36
\pi *36= 113.04
113.04/6=18.84
5 0
3 years ago
Which expression is equivalent to -2.1 + (-5.9) + (-3.7)?
devlian [24]
I think the best answer would be (A) (2.1+5.9+3.7) but the only difference is that one is negative an the other is positive
4 0
3 years ago
Based on the given information, which conjecture is invalid?
a_sh-v [17]
Valid based on the given information<span>. If not, write </span>invalid<span>. ... So, the statement is </span>invalid<span>. Determine .....disprove a </span>conjecture<span> reached using inductive or deductive</span><span> .</span>
3 0
3 years ago
What is the LCD of 5/12 and -9/16 ?
Andreyy89
The least common denominator of 5/12 and -9/16 

The answer is 48.

Now, we have to change the numerators also to make this a equal fraction to the first ones we had.

5*4 = 20
12*4 = 48

20/48

-9*3 = -27
16*3 = 48

-27/48


7 0
4 years ago
Read 2 more answers
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