3 years ago

A boat starts at a point A. It travels a distance of 7 km on a bearing of 135° to point B. From B it

Mathematics

1 answer:

dexar [7]3 years ago

8 0

Answer:

c.using scale of 1 cm:1km draw a diagram

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What is (2v+5)(2v-5)

DedPeter [7]

Answer:

4v^2-25

Step-by-step explanation:

(2v+5)(2v-5)

Using (a-b)(a+b)=a^2-b^2, simplify the product

(2v)^2-5^2

To raise a <u>product to a power</u>, raise each factor to that power.

4v^2-5^2

Evaluate the <u>power.</u>

4v^2-25

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neonofarm [45]

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Give B is the midpoint of AC, what is AC?

Savatey [412]

Answer:

$\fbox{27}$

Step-by-step explanation:

$4x+3=3x+9\\4x+3-3=3x+9-3\\4x=3x+6\\4x-3x=3x-3x+6\\x=6$

Plug in the 6 to the equations. Since B is the midpoint of AC, then both should be equal once plugged in [and solved].

$4(6)+3\\= 27\\3(6)+9\\= 27\\\\\fbox{27}$

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7nadin3 [17]

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