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3 years ago

HELP ASAP!!!! CROSS-SECTIONS

Mathematics

2 answers:

ella [17]3 years ago

4 0

The answer to your problem is d hope this helps you

ser-zykov [4K]3 years ago

3 0

Answer:

Step-by-step explanation:

These problems where you are not told what basic shape you are working with and have to assume some properties, just should not be asked. You are to assume that this is a parallelepiped.

The answer that you want is B

The length of the rectangle is 8 in given along the bottom. The top is also 8 in. The width of that rectangle is 4. The rectangle is the top of the drawing.

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<img src="https://tex.z-dn.net/?f=-3%2Fz%2B7%2F4z%3D5%2Fz-25" id="TexFormula1" title="-3/z+7/4z=5/z-25" alt="-3/z+7/4z=5/z-25" a

ycow [4]

Answer:

z = 1/4

Step-by-step explanation:

See attached image

4 0

2 years ago

Read 2 more answers

Find the point-slope form. Then use that to find the slope-intercept form

umka2103 [35]

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ 5 &,& 10~) 
% (c,d)
&&(~ 8 &,& 16~)
\end{array}
\\\\\\
% slope = m
slope = m\implies 
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{16-10}{8-5}\implies \cfrac{6}{3}\implies 2
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-10=2(x-5)\implies y-10=2x-10
\\\\\\
y-=2x-10+10\implies y=2x$

4 0

4 years ago

Given Triangle DEF is isosceles and angle D is the vertex angle, Find x, DE, DF, EF

ch4aika [34]

Answer:

x=2;DE,EF=9,DF=5

Step-by-step explanation:

Since DEF is isoceles, you can set the equations

x+7 and 2x+5 equal to each other

x+7=2x+5, now solve for x

-x=-2,

x=2, now plug in for each side

DE,EF=9

DF=3(2)-1=5

4 0

3 years ago

Amelie's dog weighs 47.17 pounds. Amelie's dog weighs 5.3 times as much as Evan's dog.

kupik [55]

Answer:

8.9 lb

Step-by-step explanation:

I divided 47.17 by 5.3

47.17÷5.3= 8.9

then to check my answer I multiplied 8.9 by 5.3 and got 47.17

hope this helps <3

4 0

3 years ago

Guesstimate how much total time do Americans spend driving in one year? Express the answer in hours, years and lifetimes.

Drupady [299]

Answer:

1,460 hours per year.

113,880 hours in a lifetime.

Step-by-step explanation:

Great question, it is always good to ask away and get rid of any doubts that you may be having.

Let's assume that on an average day Americans drive 4 hours a day. This includes going and coming from work as well as any groceries they might need to do. Since there are 365 days in a year we can multiply this by the hours a day driven.

$365*4 = 1,460$

We can "guesstimate" that on average an American drives 1,460 hours per year.

Based on my research the average lifetime of an American is 78 years old. We can now multiply this by the number of hours driven in a year to have an idea of the number of hours driven in a lifetime.

$1,460*78 = 113,880$

On average we "guesstimate" that an American drives 113,880 hours in a lifetime.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

7 0

3 years ago