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netineya [11]
3 years ago
9

the next Science test will have 50 questions.How many questions does Julia need to answer correctly to recieve a score of 90%

Mathematics
2 answers:
andrezito [222]3 years ago
5 0
She will have to answer 45 questions right because if you multiply 50×.90. You will get 45, so she can only get 5 questions wrong.
Katarina [22]3 years ago
3 0
Julie will need to answer 45 questions correctly to receive a score of 90%
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This expression represents the average cost per game, in dollars, at a bowling alley, where n represents the number of games: .
koban [17]

Answer:

$4.75

Step-by-step explanation:

The expression given for then average cost is :

(3n + 7 / n)

If the number of games, n = 4

The average cost becomes :

(3n + 7) / n

Put n = 4 in the equation

(3(4) + 7) / 4

(12 + 7) / 4

19 / 4

= 4 3/4

= $4.75

4 0
2 years ago
G(a) = 4a − 5 Find (g g)(6)
N76 [4]

Answer:

19

Step-by-step explanation:

substitute 6 for a

4(6) + 5 =

24-5 =

19

7 0
3 years ago
Find the length of the missing side. The triangle is not drawn to scale.
timofeeve [1]

Answer:

6

Step-by-step explanation:

a^2 + 8^2 = 10^2

a^2 + 64 = 100

a^2 = 36

sq root of a = sq root of 36

a = 6

8 0
3 years ago
Read 2 more answers
Find the product. Your answer must be in simplest form.<br> 7/8 of 56
Leviafan [203]

Answer:

You probably know that the number above the fraction line is called the numerator and the number below it is called the denominator. To work out the fraction of any number, we first need to convert that whole number into a fraction as well.

Here's a little tip for you. Any number can be converted to fraction if you use 1 as the denominator:

56

1

So now that we've converted 56 into a fraction, to work out the answer, we put the fraction 7/8 side by side with our new fraction, 56/1 so that we can multiply those two fractions.

That's right, all you need to do is convert the whole number to a fraction and then multiply the numerators and denominators. Let's take a look:

7 x 56

8 x 1

=  

392

8

In this case, our new fraction can actually be simplified down further. To do that, we need to find the greatest common factor of both numbers.

You can use our handy GCF calculator to work this out yourself if you want to. We already did that, and the GCF of 392 and 8 is 8.

We can now divide both the new numerator and the denominator by 8 to simplify this fraction down to its lowest terms.

392/8 = 49

8/8 = 1

When we put that together, we can see that our complete answer is:

49

1

The complete and simplified answer to the question what is 7/8 of 56 is:

49

Hopefully this tutorial has helped you to understand how to find the fraction of any whole number. You can now go give it a go with more numbers to practice your newfound fraction skills.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Find the missing side of each triangle. leave your answers in simplest radical form
dedylja [7]
X^2 = 4^2 - (2√3)^2
x^2 = 16 - 12
x^2 = 4
x = 2

answer
x = 2 cm
7 0
3 years ago
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