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amid [387]
3 years ago
11

Please help me pleaseeee

Mathematics
2 answers:
adelina 88 [10]3 years ago
8 0
The answer is n=18

Hope this helps :))
Amanda [17]3 years ago
5 0

Answer:

18

Step-by-step explanation:

n=(6*42)/14

n=252/14

n=18

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If y is 2.5 when x is 5 and i varies directly with x, find y when x is 14 ?
Anestetic [448]

ANSWER

y = 7

EXPLANATION

If y varies directly with x, we write the mathematical statement;

y \propto \: x

When we introduce the constant of proportionality k, then we write the equation,

y = kx

If y is 2.5 when x is 5,then we have;

2.5 = 5k

k =  \frac{2.5}{5}

k = 0.5

The equation of variation then becomes;

y = 0.5x

when x=14,

y = 0.5(14)

y = 7

8 0
3 years ago
Read 2 more answers
There are three small rounds of cheddar cheese in Grace’s refrigerator. She wants to bring a small wedge of cheese in her lunch
Travka [436]

Answer:

The one-fourth of one round of cheddar cheese

Step-by-step explanation:

Because if we cut every round in 4 equal pieces, 4x3=12, we will have 12 equal pieces of cheddar cheese.

6 0
3 years ago
The circumference of a circle is . What is the area of the circle in terms of ?
LenKa [72]

Answer:

\frac{225}{4}π

Step-by-step explanation:

Formula for the circumference of a circle

2r(π)

Area of a circle

πr²

2r(π)=x

x/2(π)=r

π(x/2(π))²=Area

π(x²/4(π)²)=Area

(x²/4(π))=Area

(15π)²÷4π=Area

\frac{225}{4}π

7 0
3 years ago
victor want to make a book tower of height 48 cm .If the thickness of book is 12 mm ,how many books will he need to make the des
lions [1.4K]

Answer:

40

Step-by-step explanation:

1. Change 48 cm to mm, which will give you 480 mm

2. Divide 480 mm by 12 mm, that will give you 40

Therefore, Victor needs 40 books to make his desired height.

6 0
2 years ago
Please help!! 20 POINTS
rjkz [21]

f(-3) would be 36.

When looking at synthetic division, the numbers across the top represent the coefficients of x^2, x and the constant in that order. Therefore, the equation is as follows.

2x^2 - 5x + 3

Now we can put -3 into the equation and solve.

2(-3)^2 - 5(-3) + 3

2(9) + 15 + 3

18 + 15 + 3

36

7 0
3 years ago
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