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sweet-ann [11.9K]
3 years ago
7

Can someone please help me?

Mathematics
1 answer:
madam [21]3 years ago
7 0

Answer:

Length of enlarged picture is 12.5 inches

Step-by-step explanation:

To determine the length of the enlarged picture, we need to compare the width of the original to the enlarged

This will enable us know the scale factor in use

that would be;

8.75/3.5 = 2.5

so the scale is 1 to 2.5

To get the length of the enlarged picture, we simply multiply the original length by 2.5

That would be 5 * 2.5 = 12.5 inches

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Water is being pumped to empty a swimming pool.
IceJOKER [234]
To empty the pool, you need to lower the water level by 150cm. since you can only lower it by 30cm every 2 hours (also same as 15 cm per hour), that means it will take you 10 hours.

150cm*(2 hours)/(30cm) = 150*(1/15) = 150/15 = 10.

6 a.m. + 10 hours = 4 p.m.

So the answer is C.) 4 p.m.
3 0
4 years ago
Help please thank you
lara31 [8.8K]

One of the rules of logarithms is as follows;

\begin{gathered} \log _ab=x \\ Is\text{ equivalent to,} \\ a^x=b \end{gathered}

We can now insert the corresponding values in the question provided, as shown below;

\begin{gathered} \log _2\frac{1}{16}=-4 \\ \text{This is equivalent to,} \\ 2^{-4}=\frac{1}{16} \end{gathered}

Note that, one of the rules of exponents, states that a number when raised to the power of a negative value, is equivalent to the reciprocal of that expression. An example is shown below;

a^{-x}=\frac{1}{a^x}

Therefore, our equation can now be re-written as follows;

\begin{gathered} 2^{-4}=\frac{1}{16} \\ \frac{1}{2^4}=\frac{1}{16}^{} \\ \frac{1}{16}=\frac{1}{16} \end{gathered}

However, the question requires the answer to be expressed in exponential form. Therefore,

\log _2\frac{1}{16}=2^{-4}

4 0
2 years ago
X^20-1=0,how many real roots does each have​
Ainat [17]

Answer:

x = 1,-1   2 real roots

Step-by-step explanation:

PLEASE GIVE BRAINLIEST

4 0
3 years ago
What type of linear association does the graph show?
ExtremeBDS [4]

Answer:

I think strong positive

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
Solve.<br><br> 100x − 200 &gt; 60x − 120
irakobra [83]

Answer:

x>2

Step-by-step explanation:

Step 1: Subtract 60x from both sides.

100x−200−60x>60x−120−60x

40x−200>−120

Step 2: Add 200 to both sides.

40x−200+200>−120+200

40x>80

Step 3: Divide both sides by 40.

40x/40> 80/40

x>2

Hope this helped :)

8 0
3 years ago
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