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MissTica
3 years ago
11

What is another strategy that you can use to multiply 2 digit by 2 digit numbers?

Mathematics
1 answer:
ipn [44]3 years ago
8 0

You may write them separating the units and tens digits, and then use FOIL to add 4 easy tems. For example, let's compute 21\cdot 36:

21\cdot 36=(20+1)(30+6)=600+120+30+6 = 756

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Ashley adds Polynomial A and B together:
icang [17]

Answer:

coefficient of x: 2

coefficient of y: 3

coefficient of z: -7

Step-by-step explanation:

To solve this problem, first we need to sum the polynomials A and B, then we need to check the coefficients of x, y and z.

The sum of the polynomials is:

A + B = 5z + 4x^2 - 6y + 2 + 2x + 9y - 12z - 2

A + B = 4x^2 + 2x + 3y - 7z

So, the coefficients are:

coefficient of x^2: 4

coefficient of x: 2

coefficient of y: 3

coefficient of z: -7

3 0
3 years ago
Read 2 more answers
Find two numbers whos diffrence is 16 and the product is 720
antiseptic1488 [7]

Answer:

the numbers who's difference is 16 and the product is 720 is

36 &20

Explanation:

to finding numbers you have to express the equation in a quadratic equation then Factor it.

since the two numbers have a difference of 16 you can say that the first number is x and the second number is x -16 then their product is 720.

x(x-16)=720

x²-16x=720

x²-16x-720=0

(x-36)(x+20)

there are two possible value of x but since you are looking for the positive value of x, choose the positive value of x the first number is 20.

To find the second number

x-16=20

x=20+16

x=36

the second number is 36

<u>Now </u><u>to </u><u>check</u>

<u>3</u><u>6</u><u>-</u><u>2</u><u>0</u><u>=</u><u>1</u><u>6</u>

<u>2</u><u>0</u><u>*</u><u>3</u><u>6</u><u>=</u><u>7</u><u>2</u><u>0</u>

8 0
3 years ago
A box contains 10 green marbles and 11 white marbles. If the first marble chosen was a green marble, what is the probability of
Neko [114]

Answer:

11/20

Step-by-step explanation:

At the beginning, the number of marbles in the box are:

10 green marbles

11 white marbles

The first marble chosen is green, and then it is not replaced in the box. Therefore, the number of green marbles left in the box is 9.

Therefore, the total number of marbles left in the box is:

n=9+11=20

Now we want to find the probability to choose a white marble. The number of white marble is

w=11

Therefore, the probability of choosing a white marble is:

p(w)=\frac{w}{n}=\frac{11}{20}

3 0
3 years ago
What will be the length of the battery?
kobusy [5.1K]

Answer:

:) 17

Step-by-step explanation:

68 = 4 x L

68 div by 4 = 17

the length is 17

6 0
2 years ago
Read 2 more answers
The surface area of a triangular pyramid is 1836 ft2.
Archy [21]
A triangular pyramid has 4 triangular faces. If all 4 have the same area, then one of them has area 1/4 of the surface area, 1836. That gives 459 sq ft as the area of one of the triangular faces.
3 0
3 years ago
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