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saw5 [17]
3 years ago
12

Equivalent expression: y−(−3y)

Mathematics
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

4y

-(- = +

y+3y

4y

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Find the sum and the product of the roots of the equation:<br><br> x^2−37x+27=0
lawyer [7]

Answer:

Sum of the Roots = 37

Product of the Roots = 27

Step-by-step explanation:

Here, the given expression is  x^{2}  - 37x + 27 = 0

Now the general Quadratic Equation is of the form:

ax^{2}  + bx + c = 0

Here, Sum of the Roots = -(\frac{b}{a} )

and the Product of the Roots =  (\frac{c}{a} )

So, comparing the general equation with the given equation, we get:

a = 1, b = -37 and c = 27

So, Sum of the Roots = -(\frac{-37}{1} )  =  37

and the Product of the Roots =  (\frac{27}{1} ) = 27

6 0
3 years ago
If 3 * 9 + 2y = 47 what is the value of y
docker41 [41]
Answer: 10

Why?
3*9+2y=47
3*9= 27
27+2y=47
47-27= 20
2y=20
20/2=10
Y=10

Hope this helps :D
6 0
3 years ago
If a and b are positive numbers, find the maximum value of f(x) = xa(7 â x)b on the interval 0 ⤠x ⤠7.
algol [13]
Given f(x)=x^a(7-x)^b on the interval 0 ≤ x ≤ 7, for maximum value, f'(x) = 0.

f'(x)=0 \\  \\ \Rightarrow -bx^{a}(7-x)^{b-1}+ax^{a-1}(7-x)^b=0 \\  \\ \Rightarrow ax^{a-1}(7-x)^b=bx^{a}(7-x)^{b-1} \\  \\ \Rightarrow a(7-x)=bx \\  \\ \Rightarrow (a+b)x=7a \\  \\ \Rightarrow x= \frac{7a}{a+b}
8 0
3 years ago
The equation for the cross-section of a parabolic satellite TV dish is stated below, measured in inches. How far is the focus fr
leonid [27]
<span> The coordinates of the focus are </span><span><span>(<span>h,k+<span>1/<span>4a</span></span></span>)</span><span>(<span>h,k+<span>1/<span>4a</span></span></span>)

y=1/38*x^2
here h=0,k=0 ,a=1/38

so if we put values to find focus
focus(0,0+1/4*1/38)=(0,9.5)
</span></span><span>
</span>
3 0
3 years ago
the temperature at midnight on Tuesday was 3 degrees. At midnight on Wednesday the temperature is 7 degrees colder. what is the
liq [111]

Answer:

-4

Step-by-step explanation:

first, you minus 3 by 3 until you get zero then you minus 4 from zero which gets you -4 degrees.

3 0
3 years ago
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