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3 years ago

Rewrite 20 = 8x + 4r

Mathematics

1 answer:

3241004551 [841]3 years ago

4 0

Answer:

Step-by-step explanation:

20 = 8x + 4r can be rewritten in multiple ways.

1. Reduce the coefficients: 5 = 2x + r

2. Solve for r: r = 5 - 2x

5 - r

3. Solve for x: x = -----------

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Two sides and an angle are given. determine whether the given information results in one triangle, no triangle, three triangles,

Crazy boy [7]

We are given 2 sides 18.7, 16.1 and a NON-included angle.
We have to calculate the altitude of the triangle.
altitude = 18.7 * sine (35)
altitude = 18.7 * 0.57358
altitude = 10.725946 
In this case, side c is greater than the altitude and is less than side a so 2 two triangles will be formed.

Source:
http://www.1728.org/trigssa.htm

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3 years ago

Suppose Sally has $28.00 in her bank account and starts saving $18.25 every week. Her friend Suzy has $161.00 in her bank accoun

Elza [17]

Sally has $28.00 in her bank account and starts saving $18.25 every week.

Let x represent the number of weeks from when he have $28.00 in her account.

and y represent the amount in her account at week x;

We can write the function of the case as;

$y=mx+b$

where m is the amount she saves every week, and b the initial amount in her account.

$\begin{gathered} m=\text{ \$18.25} \\ b=\text{ \$28.00} \end{gathered}$

So, the function will be;

$y=18.25x+28$

Her friend Suzy has $161.00 in her bank account and is withdrawing $15 every week.

Using the same rule as in a above;

$\begin{gathered} m=-15\text{ (withdrawing is negative)} \\ b=161 \end{gathered}$

The function will be;

$y=-15x+161$

The graph of the two functions is shown below;

The point where the two lines intersect is shown in the graph above.

The point is at;

$(4,101)$

Which is at week 4 and balance $101.

The point at which they intersect is the point where they both have the same values.

It is the week when both Sally and Suzy have the same amount in there account.

So, at the fourth week (week 4) Sally and Suzy both have $101 in their account

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1 year ago

Becky is 7 year older than half of Bryan's age. If Bryan is 36 how old is becky ?

Tanya [424]

Answer: Im going to guess 25

Step-by-step explanation: bryan is 36 half of 36 is 18 and becky is 7 years older than 18 which half so you would do 18+7=25 there is your answer.

I THINK DONT QUOTE ME ON THAT ANSWER

8 0

3 years ago

Help and please number the answers accurately thanks a lot!

kvasek [131]

Answer:

I KNOWW THE ANSWER!!

Step-by-step explanation:

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3 years ago

What property 8 + 43 = 43 + 8

zysi [14]

Answer:

commutative property

Step-by-step explanation:

It's basically just changing the order of the equation.

3 0

3 years ago