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mamaluj [8]
3 years ago
5

the temperature of a hot cup of coffee left on the counter every minute the monthly sales of albums by a band whose popularity i

s declining the value of a home in a growing community every year the amount of money in a savings account that earns interest annually the amount of a radioactive element remaining in a sample every decade
Mathematics
1 answer:
zmey [24]3 years ago
5 0
I think uhhh i think it’s a carrot
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the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur
natita [175]

Answer:

The width of the frame is equal to 8\ cm  

Step-by-step explanation:

Let

x-------> the width of the frame picture

we know that

(28-2x)(32-2x)=192    

896-56x-64x+4x^{2} =192

4x^{2}-120x+704=0  

Simplify

x^{2}-30x+176=0

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}-30x+176=0

so

a=1\\b=-30\\c=176

substitute in the formula

x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}

x=\frac{30(+/-)\sqrt{196}} {2}

x=\frac{30(+/-)14} {2}

x=\frac{30+14} {2}=22\ cm  ----> this solution is not logic

x=\frac{30-14} {2}=8\ cm  

The width of the frame is equal to 8\ cm  

8 0
3 years ago
X) 7.A.47
vodomira [7]

Answer:

You will gain $27

Step-by-step explanation:

Just multiply $63 times 0.42857142857

8 0
3 years ago
If sin=3 by 5 and cos =4 by 5 find tan​
Afina-wow [57]

Answer:

<h3>3/4</h3>

Step-by-step explanation:

tan =   \frac{sin}{cos }

<h3> =3/5/4/5</h3>

=3/5 × 5/4

=15/20

<h3> </h3><h3> =3/4</h3>

7 0
3 years ago
Mia used 3 different base 10 blocks to model a 3 digit number what is the number?
spin [16.1K]

Answer:

I think its 300

but wouldn't that be like a 2 digit number like 30? scince they are only 10 blocks 10 + 10 + 10 (3×10= 30)

If you dont understand just coment.

5 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST<br> PLS DUE TOMORROW <br> 9/27/18
s2008m [1.1K]
30. is 8 [-5] [3] [-2] -2
4 0
3 years ago
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