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2 years ago

I just need help with this problem

Mathematics

1 answer:

Oksanka [162]2 years ago

7 0

+1/31 and -1/31
Hope this helps.

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Tobin is solving the equation 3 (x minus 1.25) = 11.25. His work is shown below.

Bezzdna [24]

Answer:

tobin should have divided by three

Step-by-step explanation:

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2 years ago

Read 2 more answers

HELPPP PLZZZZZ HURRY WILL MARK BRAINLEST

Aliun [14]

Answer:

3) 30 ft

4) 4.8 inches

6) Perimeter = 16 Area = 24

7) Perimeter = 28 Area = 32

8) Perimeter = 29 Area = around 50

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3 years ago

How can you find the area of a triangle using the Law of Sines?

aniked [119]

Explanation:

One formula for the area of a triangle is ...

Area = (1/2)ab·sin(C)

This presumes you know the measures of two sides and the angle between them. The Law of Sines is typically used where you know all the angles and only one side measure.

You would use the law of sines to find an additional side measure, then make use of the above formula for area.

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2 years ago

Help!! BRAINLIEST TOO!

natulia [17]

Answer:

36.5 inches

Step-by-step explanation:

Given

See attachment for the given data

Required

Which length is closest to 4.2lb

The given data is a linear dataset.

So, we start by calculating the slope (m)

$m =\frac{y_2 - y_1}{x_2 - x_1}$

Pick any two corresponding points from the table

So, we have:

$(x_1,y_1) = (8,1.21)$

$(x_2,y_2) = (12,1.63)$

So:

$m =\frac{y_2 - y_1}{x_2 - x_1}$

$m =\frac{1.63 - 1.21}{12 - 8}$

$m =\frac{0.42}{4}$

$m =0.105$

The linear equation is then calculated using:

$y = m(x - x_1) + y_1$

This gives:

$y = 0.105 * (x - 8) + 1.21$

Open bracket

$y = 0.105x - 0.84 + 1.21$

$y = 0.105x + 0.37$

To get the length closest to 4.2lb,

we set $y = 4.2$

Then solve for x

So, we have:

$y = 0.105x + 0.37$

$4.2 = 0.105x + 0.37$

Collect like terms

$0.105x= 4.2 - 0.37$

$0.105x= 3.83$

Solve for x

$x= 3.83/0.105$

$x\approx 36.5$

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3 years ago

3^x = 27^a+b and a^2-b^2/(a-b)=5 What is x?

Colt1911 [192]

Your answer should be 3x-x+2=4 hope this helps..

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3 years ago