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Vladimir79 [104]
3 years ago
12

What is the coefficient of the second term of the trinomial? (4a+5)2=16a2+Ba+25 Enter your answer in the box. B =

Mathematics
1 answer:
DochEvi [55]3 years ago
3 0

Answer:

B=40

Step-by-step explanation:

we know that

(a+b)^{2}=a^{2}+2ab+b^{2}

In this problem we have

(4a+5)^{2}=16a^{2}+Ba+25

The second term of the trinomial is equal to

2(4a)(5)=40a

therefore

B=40

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Solve the system using elimination.<br> 3x - 5y = 8<br> X - 5y = - 4
Goryan [66]

Answer::.x=6,y=2

3x - 5y = 8......(1)

X - 5y = - 4......(2)

subtracting equation 2 from 1 we get

Step-by-step explanation:

3x - 5y = 8

X - 5y = - 4

-

------------------

2x=12

x=12/2=6

multiplying equation 2 by3 weget

3x-15y=-12........(3)

subtracting equation 1from 3

3x-15y=-12

3x-5y=8

-

------------------

-10y=-12-8

y=-20/-10=2

6 0
3 years ago
List the next four multiples of each fraction 1/4
julsineya [31]

Answer:

It should be easy to complete.

Step-by-step explanation:

1/2

7 0
3 years ago
The coffee merchant plans to mix some fancy $6.50 per pound ground coffee called royal soil with 10 pounds of a lowly $2 per pou
taurus [48]

Answer and explanation:

Given:

Royal soil= $6.50 per pound

Royal peasant = $2 per pound of 10 pounds

Blend total pounds is x+10, price is unknown hence solved below

Using algebra

We find unknown x = number of pounds of royal soil

$6.50(x)+$2(10)=6.50x+20/x+10(x+10)

= 6.50x+20= 6.50x²+85x+200

8 0
3 years ago
Write the contrapositive of the conditional statement. Determine whether the contrapositive is true or false. If it is false, fi
scZoUnD [109]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
Tom borrowed $35,000 to remodel his house. At the end of 5-year loan, he had repaid a total of $46,375. At what simple interest
Wewaii [24]
The formula for simple interest is <em>I</em> = <em>prt</em>, where <em>I</em> is the amount of interest, <em>p</em> is the principal borrowed, <em>r</em> is the interest rate written as a decimal number, and <em>t</em> is the amount of time in years.  First we find the amount of interest.  He borrowed $35000 but paid back $46375.  That means he paid 46375-35000 = $11375 in interest.  We can now substitute our information into our interest formula:
11375=35000(<em>r</em>)(5)
11375=35000(5)(<em>r</em>) ----- remember that multiplication is commutative
11375=175000<em>r</em>
Divide both sides by 175000 to cancel it:
11375/175000 = 175000<em>r</em>/175000
0.065 = <em>r</em>
To convert this to a percentage, we multiply by 100:
0.065(100) = 6.5%
5 0
3 years ago
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