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3 years ago

There are 30 students in a sixth grade class. 60% of the students are girls. How many of the students are girls?

Mathematics

1 answer:

shtirl [24]3 years ago

7 0

Answer:

Step-by-step explanation:

30 students * 60/100= 18

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Write the monomial in standard form. name it's coefficient and identify its degree.

Hunter-Best [27]

Answer:

$Standard\ Form = {3n^2} m^{-2}$

Step-by-step explanation:

Given

$\frac{2}{3m^2n} * 4.5n^3$

Required

Write in Standard Form

To start with; the two monomials have to be multiplied together;

$\frac{2}{3m^2n} * 4.5n^3$

$Standard\ Form = \frac{2 * 4.5n^3}{3m^2n}$

Split the numerator and the denominator

$Standard\ Form = \frac{2 * 4.5 * n^3}{3 * m^2 * n}$

Multiply Like terms

$Standard\ Form = \frac{9 * n^3}{3 * m^2 * n}$

Divide 9 by 3 to give 3

$Standard\ Form = \frac{3 * n^3}{m^2 * n}$

Divide n³ by n to n²

$Standard\ Form = \frac{3 * n^2}{m^2 }$

Split fraction

$Standard\ Form = {3 * n^2} * \frac{1}{m^2 }$

From laws of indices;

$\frac{1}{a^n} = a^{-n}$

$Standard\ Form = {3 * n^2} * \frac{1}{m^2 }$ becomes

$Standard\ Form = {3 * n^2} * m^{-2}$

Multiply all together

$Standard\ Form = {3n^2} m^{-2}$

5 0

3 years ago

Solve the system of linear equations by elimination x + 2y = 13 --x+y=5

katen-ka-za [31]

Answer:

{x,y} = {1,6} Have a great day

5 0

3 years ago

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Solve the equation. PLS

pochemuha

Answer:

n= 26, so the answer would be 'B'.

Step-by-step explanation:

n-8=18

n=18+8

n=26

4 0

3 years ago

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Please help me find the value of x

Novay_Z [31]

Set the equations to equal each other because the angles are equal.
8x - 63 = 4x - 27
+63 on both sides
8x = 4x + 36
-4x on both sides
4x = 36
/4 on both sides
x = 9

Answer:
x = 9

7 0

3 years ago

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You bought a magazine for $7 and some candy bars for $4 each. You spent a total of $23. How many candy bars did you buy?

trasher [3.6K]

Answer:

4 candy bars

Step-by-step explanation:

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3 years ago

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