3 years ago

If you were to solve the following system by substitution what would be the best variable to solve

Mathematics

1 answer:

nadezda [96]3 years ago

3 0

We need to know more about what you are talking about

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Please hurry I will mark you brainliest

Irina18 [472]

Answer:

The solution to above problem is 1- $45n 2- $(250+28n) 3- $(500+20n)

Step-by-step explanation:

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2 years ago

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If you place a 34-foot ladder against the top of a building and the bottom of the ladder is 25 feet from the bottom of the build

Nat2105 [25]

Answer:

Step-by-step explanation:

Since it says round to the nearest tenth of a foot, I might be wrong. But anyways I hope this helps!

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2 years ago

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Allen runs 8 miles in 3 hours at a steady pace. how long does it take him to run 3 miles

Amiraneli [1.4K]

$\begin{array}{ccc}8miles&-&3hours\\\\3miles&-&xhours\end{array}\\\\8x=3\cdot 3\\\\8x=9\ \ \ \ /:8\\\\x=\frac{9}{8}\\\\x=1\frac{1}{8}\ (h)$

$v=\frac{8}{3}\ mph\\\\s=3miles\\\\t=s:v\\\\t=3:\frac{8}{3}=3\cdot\frac{3}{8}=\frac{3}{1}\cdot\frac{3}{8}=\frac{9}{8}=1\frac{1}{8}\ (h)$

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3 years ago

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ANSWER IS C

MA_775_DIABLO [31]

Answer:

x <2

Step-by-step explanation:

2.5 – 1.2x < 6.5 – 3.2x

Add 3.2x to each side

2.5 – 1.2x+3.2x < 6.5 – 3.2x+3.2x

2.5 +2x < 6.5

Subtract 2.5 from each side

2.5+2x-2.5<6.5-2.5

2x<4

Divide by 2

2x/2 < 4/2

x <2

8 0

2 years ago

A dog is standing 12 feet from a tree looking at a bird in the tree. the angle of elevation from the dog to the bird is 50°. how

jasenka [17]

The distance of the bird from the ground will be given by:
tan θ=opposite/adjacent
θ=50°
opposite=h
adjacent=12 ft
plugging in the values in the formula we get:
tan 50=h/12
thus
h=12tan50
h=14.301 ft
=14.3 ft

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3 years ago