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Mars2501 [29]
2 years ago
8

When the sum of 7 and three times a positive number is subtracted from the square of the​ number, 0 results. find the number?

Mathematics
1 answer:
schepotkina [342]2 years ago
3 0
<span>The answer is...
x^2 - (7 + 2x) = 0
x^2 - 2x - 7 = 0</span>
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A person wants to create a vegetable garden and keeps the rabbits out by enclosing it with 100 feet of fencing. The area of the
alekssr [168]

Answer:

The garden can not have area of 700ft^2

Step-by-step explanation:

We are given equation for area as

A(w)=w\times (50-w)

where

w is the width (in feet) of the garden

now, we are given area =700 ft^2

so, we can set area =700

and then we can solve for w

w\times (50-w)=700

50w-w^2=700

-w^2+50w-700=0

now, we can use quadratic formula

ax^2+bx+c=0

w=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

we can compare and find a,b, and c

a=-1 , b=50 , c=-700

now, we can plug values

w=\frac{-50\pm \sqrt{50^2-4\left(-1\right)\left(-700\right)}}{2\left(-1\right)}

w=25-5\sqrt{3}i,\:w=25+5\sqrt{3}i

We can see that values of w is not real

so, w does not exists when area =700

so, The garden can not have area of 700ft^2


4 0
2 years ago
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dangina [55]
I’m pretty sure the answer is either D or E but I’m not positive !
7 0
2 years ago
How do you subtract<br> -6 - (-7)? <br> Can you explain it step by step too? Thanks!
djverab [1.8K]
\bf -6-(-7)\implies -6-1(-7)\implies -6-1\cdot -7\implies -6+(-1\cdot -7)&#10;\\\\\\&#10;-6+(+7)\implies -6+7\implies 1
3 0
3 years ago
A garden table and a bench cost $653 combined. The garden table cost $97 less than the bench. what is the cost of the bench?
SIZIF [17.4K]

T is the cost of the table. B is the cost of a bench.

b+t=652
b+98=t

t-98+t=652
2t=554
t=277
b=375

Hope this helps!

8 0
3 years ago
The instructions on the bag of concrete mix say to add 2 gallons of water to each 8 pound bag of concreate mix. how much concrea
IRINA_888 [86]
4 pounds. if you divide the number of pounds by gallons you get the amount of pounds per gallon. 8 divided by 2 is 4.
5 0
2 years ago
Read 2 more answers
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