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4 years ago

Solve: 1/7x + 3/4=9/8

1 answer:

8 0

<span><span>x=<span><span>21</span><span>/8

</span></span></span><span>Decimal Form: 2.625
</span>Hope that helped!!</span>

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I need a little help with this question. Thanks in advance!

Marianna [84]

the answer would be B.

5 0

3 years ago

Fred placed 3 strands of bacteria in a petri dish. The bacteria strands double every hour. Write a formula to represent how many

miv72 [106K]

Answer:

C. $f(n) = 3(2)^n$ ; 48 strands of bacteria

Step-by-step explanation:

Fred placed 3 strands of bacteria in a petri dish.

The bacteria strands double every hour.

Formula : y = ab^x

Where a is the initial value

b = growth rate

x = hours

So, A formula to represent how many bacteria strands are present at the nth hour : $f(n)=3(2)^n$

Now we are supposed to find how many strands of bacteria are present at 4 hours.

Substitute the value in the formula :

$f(4)=3(2)^{4}$

f(4)=48

Hence 48 strands of bacteria are present at 4 hours.

4 0

3 years ago

The table shows weights for different US coins. Allen has one of each coin in his hand.

kozerog [31]

Round each coin weight to the nearest gram first, penny 3g, nickel 5g, dime 2g, quarter 6g, half dollar 11g. Now add those numbers together as he has one of each coin 3+5+2+6+11=27 grams

6 0

3 years ago

PLEASE HELP!!!!!!!!!!!!!!

Lelechka [254]

Answer:

Step-by-step explanation:

(8x²-18x+10)/(x²+5)(x-3)

express the expression as a partial fraction:

(8x²-18x+10)/[(x^2+5)(x-3)] =A/x-3 +bx+c/x²+5

both denominator are equal , so require only work with the nominator

(8x²-18x+10)=(x²+5)A+(x-3)(bx+c)

8x²-18x+10= x²A+5A+bx²+cx-3bx-3c

combine like terms:

x²(A+b)+x(-3b+c)+5A-3c

(8x²-18x+10)

looking at the equation

A+b=8

-3b+c=-18

5A-3c=10

solve for A,b and c (system of equation)

A=2 , B=6, and C=0

substitute in the value of A, b and c

(8x²-18x+10)/[(x^2+5)(x-3)] =A/x-3 +(bx+c)/x²+5

(8x²-18x+10)/[(x^2+5)(x-3)] = 2/x-3 + (6x+0)/(x²+5)

(8x²-18x+10)/[(x^2+5)(x-3)] =

(4x+2)/[(x²+4)(x-2)]

(4x+2)/[(x²+4)(x-2)]= A/(x-2) + bx+c/(x²-2)

(4x+2)=a(x²-2)+(bx+c)(x-2)

follow the same step in the previous answer:

the answer is :

8 0

3 years ago

Need help with ixl please give right answer fill in the blanks please if 2 answer give same answer best explanations will get br

miss Akunina [59]

The equation of line that has slope 8 and passes though (2,7) is: $y=8x-9$

Step-by-step explanation:

Given

Slope of line = 8

passes through (2,7)

Equation of line in slope-intercept form is given by:

$y = mx+b$

Putting the value of slope

$y = 8x+b$

Too find the value of b, putting (2,7) in the equation

$7 = 8(2) + b\\7 = 16+b\\b = 7-16\\b = -9$

Putting b=-9 int he equation

$y=8x-9$

Hence,

The equation of line that has slope 8 and passes though (2,7) is: $y=8x-9$

Keywords: Equation of line, slope

Learn more about equation of line at:

#LearnwithBrainly

3 0

3 years ago