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3 years ago

HOW CAN A NUMBER LINE HELP YOU MULTIPLY BY 3

Mathematics

1 answer:

dimaraw [331]3 years ago

8 0

Answer:

yes

Step-by-step explanation:

Students write multiplication that match the repeated jumps on a number line and they do skip counting on a number line like 2´s 3´s 9´s and more!

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PLEASE HELP ASAP DUE 11:59 TODAY PLEASE ANSWER 6 and 7.

alekssr [168]

Number 1 is:

C and E

Number 2 is:

400

7 0

2 years ago

Given two vectors A=2i+3j+4k,B=i-2j+3k find the magnitude and direction of sum (physics question)

Law Incorporation [45]

Answer:

$Magnitude =\sqrt{59} \\\\Direction \: of \: \overrightarrow{A + B} = \frac{3}{\sqrt {59}} , \:\frac{1}{\sqrt {59}} , \:\frac{7}{\sqrt {59}}$

Step-by-step explanation:

A=2i+3j+4k

B=i-2j+3k

Sum of the vectors:

A + B = 2i+3j+4k + i-2j+3k = 3i + j + 7k

$Magnitude =\sqrt{3^2 + 1^2+ 7^2} \\\\Magnitude =\sqrt{9+1+49} \\\\Magnitude =\sqrt{59}$

Direction of the sum of the vectors:

$\widehat{A + B} =\frac{\overrightarrow{A + B}}{Magnitude\: of \:\overrightarrow{A + B}} \\\\\widehat{A + B} =\frac{3i + j + 7k}{\sqrt {59}} \\\\\widehat{A + B} =\frac{3}{\sqrt {59}} i +\frac{1}{\sqrt {59}} j+\frac{7}{\sqrt {59}} k\\\\Direction \: of \: \overrightarrow{A + B} = \frac{3}{\sqrt {59}} , \:\frac{1}{\sqrt {59}} , \:\frac{7}{\sqrt {59}} \\\\$

3 0

2 years ago

It's a little blurry sorry please help

Ghella [55]

Answer:

It's X=2

Working out:

(left one):

2(x+3)=10

2x+6=10

2x=10-6

2x=4

x=2

Working out:

(right one):

2(x+3) must be all divided by 2 so it will be x+3 and same for 10, it will be 5 so...

x+3=5

x=5-3

x=2

Hope it helps ^---^

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2 years ago

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which of the following angles would from an obtuse isosceles triangle 100,40,40 30,75,75 90,30,60

Vesna [10]

Answer:

100, 40, 40

Step-by-step explanation:

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2 years ago

7. An example for using estimation would be:

Aliun [14]

Guessing the number of pennies in a jar

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2 years ago

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