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2 years ago

Calculate 2556÷12 using long divison

Mathematics

2 answers:

Mazyrski [523]2 years ago

4 0

Answer:

213

Step-by-step explanation:

Veronika [31]2 years ago

3 0

Answer: 106.5

Step-by-step explanation:

BECAUSE ----> (2556/12) ÷ 2 = 106.5 so thats that!

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There are 9 boys and 6 girls in a hall, each holding coins in their hand. The mean number of coins for the children is 18 The me

Orlov [11]

Answer:

Step-by-step explanation:

Average = total number of coins / number of students

If the mean number of coins with boys is 14, the total number of coins held by boys = 14 x 9 = 126

The total number of coins held by the students = total number of children x average number of coins held by the children

15 x 18 = 270

The total number of coins held by girls = 270 - 126 =144

The mean number of coins for the girls = 144 / 6 = 24

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3 years ago

What is the scale factor for the set of similar figures?

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4 years ago

What are the solutions to m2 – 9 = 0?

Sati [7]

Answer:

m2-9=0

Step-by-step explanation:

Two solutions were found :

m = 3

m = -3

Step by step solution :

Step 1 :

Trying to factor as a Difference of Squares :

1.1 Factoring: m2-9

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 9 is the square of 3

Check : m2 is the square of m1

Factorization is : (m + 3) • (m - 3)

Equation at the end of step 1 :

(m + 3) • (m - 3) = 0

Step 2 :

Theory - Roots of a product :

2.1 A product of several terms equals zero.

When a product of two or more terms equals zero, then at least one of the terms must be zero.

We shall now solve each term = 0 separately

In other words, we are going to solve as many equations as there are terms in the product

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

2.2 Solve : m+3 = 0

Subtract 3 from both sides of the equation :

m = -3

Solving a Single Variable Equation :

2.3 Solve : m-3 = 0

Add 3 to both sides of the equation :

m = 3

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4 years ago

Solve for y.<br> 3(y-2) = y +4-2(-5y-2)<br> Simplify your answer as much as possible.

choli [55]

Answer:

y = -7/4

Step-by-step explanation:

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3 years ago

Polygons QRST and Q′R′S′T′ are shown on the following coordinate grid: A coordinate plane with two polygons is shown. Polygon QR

creativ13 [48]

As you can see from the picture you have:
to rotate point S about the origin by $90^0$ clockwise to form point S'';
to rotate point R about the origin by $90^0$ clockwise to form point R'';
to rotate point Q about the origin by $90^0$ clockwise to form point Q'';
to rotate point T about the origin by $90^0$ clockwise to form point T''.
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Note that rotation $90^0$ clockwise is the same as rotation $270^0$ counterclockwise, so the correct answer is rotating $270^0$ counterclockwise about the origin and translating 1 unit down.

8 0

4 years ago

Read 2 more answers

Calculate 2556÷12 using long divison​

Calculate 2556÷12 using long divison