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laila [671]
3 years ago
14

You look behind the stove and discover a slice of bread that you misplaced several weeks ago. Needless to say, it is covered wit

h mold. Since the mold started growing, the area it has covered has doubled each day. By the end of the 8th day, the entire surface of the bread is covered. When was the bread half-covered with mold?
Mathematics
1 answer:
Licemer1 [7]3 years ago
8 0

Answer:

On the 7th day.

Step-by-step explanation:

The mold doubles, so on the 7th day, the mold would be half-there.

I used the 8th day's description to figure this out.

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Sole the system by elimination -4x+9y=9 x-3y=-6
Natalka [10]

Answer:

A) -4x + 9y = 9

B) x -3y = -6

We multiply B) by 3

B) 3x -9y = -18 Then add it to A)

A) -4x + 9y = 9

-x = -9

x = 9

9 -3y = -6

3y = 15

y = 5


Step-by-step explanation:


5 0
3 years ago
How do u divide monomials?
pantera1 [17]
Different examples above! hope this helps c:

8 0
3 years ago
Which explains how to find the quotient of the division below? Negative 3 and one-third divided by StartFraction 4 over 9 EndFra
Ulleksa [173]

Answer:

(B) Write Negative 3 and one-third as Negative StartFraction 10 over 3 EndFraction, and find the reciprocal of StartFraction 4 over 9 EndFraction as StartFraction 9 over 4 EndFraction. Then, rewrite Negative 3 and one-third divided by StartFraction 4 over 9 EndFraction as Negative StartFraction 10 over 3 EndFraction times StartFraction 9 over 4 EndFraction. The quotient is Negative 7 and StartFraction 6 over 12 EndFraction = Negative 7 and one-half.

Step-by-step explanation:

To find the quotient of the division:

-3\dfrac13 \div \dfrac49

Step 1: \text{Write}$ $ -3\dfrac13$ as $ -\dfrac{10}{3}

-3\dfrac13 \div \dfrac49 =  -\dfrac{10}{3} \div \dfrac49

Step 2: Find the reciprocal of  \dfrac94

-\dfrac{10}{3} \times \dfrac94\\=-7\dfrac12

4 0
3 years ago
Read 3 more answers
Can some explain this to me do i need to covert something or can someone explain it to me how in gonna get the answer i try to d
solniwko [45]
Cross multiply:

2.5 ft x 16.5 ft = 41.25 ft

now divide:

41.25 / 8.25 = 5

L = 5 feet 
7 0
3 years ago
Solve for x.<br><br> logx+log3=log18
ad-work [718]

<u>Answer:</u>

<em>The value of x in log x + log 3 = log 18 is </em><em>6</em><em>.</em>

<u>Solution:</u>

From question, given that log x + log 3 = log 18 ---- eqn 1

Let us first simplify left hand side in above equation,

We know that log m + log n = log (mn) ----- eqn 2

Adding log m and log n results in the logarithm of the product of m and n (log mn)  

By using eqn 2, log x + log 3 becomes log 3x.  

log x + log 3 = log 3x ---- eqn 3

By substituting eqn 3 in eqn 1, we get

log 3x = log 18  

Since we have log on both sides, we can cancel log and the above equation becomes,

3x = 18

x = \frac{18}{3} = 6

Thus the value of x in log x + log3 = log18 is 6

6 0
3 years ago
Read 2 more answers
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