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3 years ago

Equation: (y+12)/(-4)=5 What is y?

Mathematics

2 answers:

zlopas [31]3 years ago

6 0

The answer is y= -32

ValentinkaMS [17]3 years ago

3 0

Y= -32
Here's the answer!!!

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I’m I right? If not change it for me

dangina [55]

The first and third are correct. They are equal.

The second is incorrect. This is because 1800 meters = 1.8 km (not 18 km). The answer you should have is a "less than sign" because 1.8 km is smaller than 18 km.

To go from meters to kilometers, you move the decimal point 3 spots to the left. This is the same as dividing by 1000.

To go from kilometers to meters, you move the decimal point 3 spots to the right. This is the same as multiplying by 1000.

8 0

3 years ago

Read 2 more answers

Are the following ratios proportional? Explain why or why not. 3 to 8; 7:20

katrin2010 [14]

Nope! If they were proportional, one would be able to be reduced to the other.
It's like the (however clichéd) example of pie slices! If you cut two pies into 8 and 20 pieces, three pieces of the pie sliced into eight pieces will not be the same as seven pieces of the pie sliced into twenty!

4 0

4 years ago

"(b) use part (a) to find a power series for f(x) = 1 (4 + x)3 ."

Firdavs [7]

Assuming

$f(x)=\dfrac1{(4+x)^3}$

Recall that for $|x|$ ,

$\displaystyle\sum_{n\ge0}x^n=\frac1{1-x}$

Denote the above by $s(x)$ . Then

$s'(x)=\displaystyle\sum_{n\ge1}nx^{n-1}=\frac1{(1-x)^2}$
$s''(x)=\displaystyle\sum_{n\ge2}n(n-1)x^{n-2}=\frac2{(1-x)^3}$

Now,

$\dfrac1{(4+x)^3}=\dfrac1{4^3}\dfrac1{\left(1-\left(-\frac x4\right)\right)^3}=\dfrac1{2^7}\dfrac2{\left(1-\left(-\frac x4\right)\right)^3}$

which means we have

$f(x)=\dfrac1{2^7}s''(x)=\dfrac1{128}\displaystyle\sum_{n\ge2}n(n-1)\left(-\frac x4\right)^{n-2}$

which is valid for $\left|-\dfrac x4\right|$ , or $|x|$ .

4 0

3 years ago

How do I determine what the graph would look like for <br> y=−2x+1 y=−2x^2+1

artcher [175]

There should be a picture under the message I don’t know if it’s going to. Come through

8 0

4 years ago

The data for Shawn's phone has 32000 megabytes if storage for photos . She wants to increase the amount by 4% if each photo uses

Law Incorporation [45]

Answer:

Yes, she will have have enough new memory for 200 additional photos.

Step-by-step explanation:

Given:

Initial memory for storage, $M_{o}=32000\textrm{ megabytes}$

Increase in memory $=4%$

Therefore, increase in memory, $\Delta M=\frac{4}{100}\times 32000=1280\textrm{ megabytes}$

Now, memory consumed by 1 photo = 5 megabytes

So, memory consumed by 200 additional photos = $200\times 5=1000\textrm{ megabytes}$

Memory left in her phone = 1280 - 1000 = 280 megabytes

Therefore, she will have additional 280 megabytes of memory left in her phone.

As memory consumed by 200 additional photos is less than that of the increase in memory, therefore, she does have enough new memory for 200 additional photos.

6 0

3 years ago