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Katarina [22]
3 years ago
12

Question 4

Mathematics
1 answer:
stealth61 [152]3 years ago
3 0
Question 4:
2x-3
Because we don’t know how much Fernando has that would be where we fill in the variable giving you 2x then 3 dollars less will give you the -3 therefore 2x-3
Question 5:
1/2x+7
Because we don’t know Deb’s age that would be the variable and we are looking for half of Deb’s age giving you 1/2x then the 7 years more giving you the +7 hence 1/2x+7
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LeAnn wants to giftwrap a present she got for her little brother. How many square inches of giftwrap will be needed to cover a b
Step2247 [10]
Posted a picture showing the solution. Everything is on it, including calculations.
The answer is 142 square inches (or 142 in.^2) same thing.

Hope this helps!

6 0
3 years ago
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Find the equation (in terms of x) of the line through the points (-2,3) and (4,-9)<br> y =
shepuryov [24]

Answer:

y =5

Step-by-step explanation:

m=

−9−7

5−5

=

−16

0

=0

y=mx+b

5=(0)(7)+b

b=5

therefore y = 5

3 0
3 years ago
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How do I find area of a circle if they only give me the diameter
disa [49]

Answer:

divide the diameter by 2

Step-by-step explanation:

the equation for the area of a circle is Pi times the radius squared. the radius is half the diameter, so if you need to find the area of the circle, just divide the diameter by 2 and you will have the length of the radius. then, jut plug it in to the equation.

7 0
3 years ago
Read 2 more answers
(25 POINTS!!)What is the equation of the line that passes through the points (15,9) and (-2,9)?
Viktor [21]

Let's use the point-slope formula...

<em>y-y1=m(x-x1) </em>

<em>m is the slope. </em>

<em>y--9=7(x--2) </em>

<em>Subtracting a negative number is the same as adding a positive number... </em>

<em>y+9=7(x+2) </em>

<em>y+9=7x+14 </em>

<em>Let's subtract 9 from both sides... </em>

<em>-9+y+9=7x+14-9 </em>

<em>y=7x+5 </em>

<em>The formula is now in the format of... </em>

<em>y=mx+b </em>

<em>This is known as slope-intercept. </em>

<em>m is the slope. </em>

<em>b is the y-intercept, the value of y when x=0. </em>

<em>Standard formula is... </em>

<em>Ax+By=C </em>

<em>Neither A nor B equal zero. </em>

<em>A is greater than zero. </em>

<em>y=7x+5 </em>

<em>Let's move 7x to the left side of the equation.  It becomes negative. </em>

<em>-7x+y=5 </em>

<em>Let's multiply both sides by -1 to render A greater than zero. </em>

<em>-1(-7x+y)=(5)(-1) </em>

<u>7x-y=-5 </u>

<u>This is the equation in standard form.</u>

5 0
4 years ago
Read 2 more answers
Help it’s my last question please!
MatroZZZ [7]

Answer:

What is it??

Step-by-step explanation:

wat's the question??

7 0
3 years ago
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