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4 years ago

do you think you could use a multiplication algorithm to multiply a 4-digit number by a 1-digit number? explain

1 answer:

4 0

Yes i could. The multiplication process will even be more simple since it only involve small number.

For Example:

1234
5
_______x

4 x 5 20
5 x 30 150
5 x 200 1000
5 x 1000 5000
________+

6170

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PLEASEEEE HELPPP MEEE <br> 6 and 7 PLEASE

Nitella [24]

Answer:

Question 6

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7

The width is 2x.

Step-by-step explanation:

Question 6)

Expand

$(5a+2)(a+4)$

solving to the expand

$(5a+2)(a+4)$

$\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$a=5a,\:b=2,\:c=a,\:d=4$

so the expression becomes

$=5aa+5a\cdot \:4+2a+2\cdot \:4$

$=5aa+5\cdot \:4a+2a+2\cdot \:4$

$=5a^2+20a+2a+8$

adding similar elements: 20a+2a=22a

$=5a^2+22a+8$

Hence,

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7)

Given

$A\:=\:8x^2$

$l=4x$

Using the formula

width = Area/Length

$=\:\frac{8x^2}{4x}$

$=2x$ ∵ $\mathrm{Divide\:the\:numbers:}\:\frac{8}{4}=2$

Therefore, the width is 2x.

5 0

3 years ago

A rectangular piece of paper has an area of 117 square inches and a perimeter of 44 inches. What are the dimensions of the paper

-Dominant- [34]

Answer:

13x9

Step-by-step explanation:

half of perimeret of rectangle L+W

half of perimeter of rectangle = 44/2 = 22

L+W=22

LxW=117

Think of 2 numbers that added =22 and multiplied =117

13+9 =22

13x9 =117

3 0

2 years ago

How do you bisect a line

Leya [2.2K]

Draw a straight line with a ruler

8 0

3 years ago

PLSS HEPPPP-P BRAINLIESTTT

Gnom [1K]

Answer:

d awnser

Step-by-step explanation:

4 0

3 years ago

Which three lengths CANNOT be the lengths of the sides of a triangle?

asambeis [7]

23 m, 17 m, 14 m
Cuz the length of a side must be bigger than the difference of the other two

4 0

3 years ago