3 years ago

Help someone to help me :( in number 2 and 3

1 answer:

7 0

So the things that you need to know are in the picture I have to see if I can help you with the other one hope this helps.

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19 points if uu help meeee

DochEvi [55]

Answer:

It is 21

Step-by-step explanation:

It is not hard all you got to do is 25+6=21 hope it helps plz Mark me brainlest :)

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3 years ago

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If I can travel 280 miles in 4.5 hours how many hours will it take me to travel 500 miles round to the nearest hundred

Lelu [443]

Answer: 8.01

Step-by-step explanation:

Speed = distance/time = 280/4.5 = 62.44mph

Time = distance/speed = 500/62.44 = 8.0071 hrs

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3 years ago

Using the sine rule, calculate the length y. Give your answer to 2 s.f.

Tpy6a [65]

Answer:

y = 9.84 mm

Step-by-step explanation:

Law of sine:

$\sf \boxed{\bf \dfrac{a}{Sin \ A}=\dfrac{b}{Sin \ B}= \dfrac{c}{Sin \ C}}$

a = y

A = 31°

b = 17 mm

B = 117°

$\sf \dfrac{y}{Sin \ 31^\circ}=\dfrac{17}{Sin \ 117^\circ}\\\\$

$\sf y = \dfrac{17}{Sin \ 117^\circ}*Sin \ 31^\circ\\\\ y = \dfrac{17}{0.89}*0.515\\\\y = 9.84 \ mm$

8 0

2 years ago

How do i divide and multiply rational expressions?

notka56 [123]

Answer:

To multiply rational expressions, first factor all numerators and denominators and cancel any factors you can. Then multiply what you have left.

Step-by-step explanation:

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3 years ago

Solve each system of equations. Equation 1: x+3y=-5 Equation 2: 9x+3y=3

bekas [8.4K]

Answer:

Equation 1: x-3y+5=0

Equation 2: 3x+y-1=0

Step-by-step explanation:

Equation 1: x+3y=-5

x+3y+5=-5+5

x=3y+5=0

Equation 2: 9x+3y-3=0

3x+y-1=0

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3 years ago