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4 years ago

6

Simplify the equation: 5d(7-3)- 16d+3x2da 10db 14dc 21dd 25d

1 answer:

Vanyuwa [196]4 years ago

5 0

Answer:

a 10d

Step-by-step explanation:

5d(7-3)- 16d+3*2d

Simplify what is inside the parenthesis first PEMDAS

5d(4) -16d +3*2d

Then we multiply and divide from left to right

5d(4) -16d +3*2d

20d -16d +3*2d

20d -16d+6d

Then we add and subtract from left to right

4d+6d

10d

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Determine 7th term in the geometric sequence whose first term is 5 and whose common ratio is 2.

blagie [28]

$\bf n^{th}\textit{ term of a geometric sequence}
\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=5\\
r=2\\
n=7
\end{cases}
\\\\\\
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3 years ago

Brian rides his bicycle 24 miles in 2 hours. Write a ratio of Brain's miles per hour. Use the ratio from #1 to determine how far

Sati [7]

Answer:Ratio in miles per hour is 12 miles per hour.

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Step-by-step explanation:

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6 0

4 years ago

Draw the graphs of the equations x – y = 1 and 2x + y = 8. Shade the area bounded by these two lines and y-axis. Also, determine

NikAS [45]

Answer:

Using Geometry to answer the question would be the simplest:

Step-by-step explanation:

Remembering the formula for the area of a triangle which is $A=\frac12bh$ . One can then tackle the question by doing the following:

Step 1 Find the y-intercepts

The y-intercepts are found by substituting in $x=0$ .

Which gives you this when you plug it into both equations:

$-y=1\\y=-1\\y=8$

So the y-intercepts for the graphs are $(0,-1)\\$ , and $(0,8)$ respectively.

Now one has to use elimination to solve the problems by adding up the equations we get:

$x-y=1\\2x+y=8\\3x=9\\x=3$

Now to solve for the y component substitute:

$2(3)+y=8\\y=2$

Therefore, the graphs intersect at the following:

$(3,2)$

Now we have our triangle which is accompanied by the graph.

now to solve it we must figure out how long the base is:

$b=8-(-1)\\b=9$

The height must also be accounted for which is the following:

$h=3$

Now the formula can be used:

$A=\frac12bh=\frac12(9)(3)=\frac{27}2\ \text{units}^2$

7 0

3 years ago

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5. Simplify<br> (7x2+ 8) - (x2 - 2)

Gennadij [26K]

Answer:

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3 0

3 years ago

Write 8.62 in word form.

borishaifa [10]

Eight point six two is the answer

7 0

3 years ago

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