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labwork [276]
3 years ago
8

Gabbys piggy bank contains nickels and dimes worth $4.90 if she has 66 coins in all how many of each does he have

Mathematics
1 answer:
Serhud [2]3 years ago
8 0
This would be 32 Dime totaling $3.20 an 34 nickles for 1.70

34*5+170 aka 1.70
32*=320  aka 3.20
3.20+1.70+4.90

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Find the value of x?? Please help!!<br><br><img src="https://tex.z-dn.net/?f=x%20%2B%202%20%3D%20%5Cfrac%7Bx%7D%7B4%7D%20%2B5" i
elena-s [515]

Answer:

<h2>x = 4</h2>

Step-by-step explanation:

x + 2 =  \frac{x}{4}  + 5

Multiply through by 4 to eliminate the fraction

That's

4x + 8 =  \frac{x}{4}  \times 5 + 5 \times 4 \\ 4x + 8 = x + 20

<u>Subtract x from each side</u>

That's

4x  - x + 8 = x - x + 20 \\ 3x  + 8 = 20

<u>Subtract 8 from each side</u>

3x + 8 - 8 = 20 - 8 \\ 3x = 12

<u>Divide both sides by 3</u>

\frac{3x}{3}  =  \frac{12}{3}

We have the final answer as

<h3>x = 4</h3>

Hope this helps you

3 0
3 years ago
Sales tax in Reagan County is 7.5% on all purchases. Calculate the sales tax on the following purchase totals (round answers to
Gre4nikov [31]

Answer:

  (a) $1.92

  (b) $11.68

  (c) $19.21

Step-by-step explanation:

The tax is the product of the tax rate (7.5%) and the taxed amount.

__

<h3>(a)</h3>

  0.075 × $25.55 ≈ $1.92

<h3>(b)</h3>

  0.075 × $155.75 ≈ $11.68

<h3>(c)</h3>

  0.075 × $256.18 ≈ $19.21

_____

It is convenient to use a calculator for these values. A suitable calculator can do the rounding for you.

7 0
2 years ago
Line AB passes through A(-3, 0) and B(-6, 5). What is the equation of the line that passes through the origin and is parallel to
MArishka [77]
I hope this helps you



slope = 5-0/-6-(-3)= -5/3


(0,0)


m.(x1-x)=y1-y


-5/3.(0-x)=0-y


5x= -3y

5x+3y=0
4 0
4 years ago
2cos^2x+3cosx-2=0 ...?
VARVARA [1.3K]
Its like a polynomial.
 
cosx=x

so it'll be like

2x^2+3x-2=0

<span>(2x−1)(x+2)
</span>
which makes your life easy because you do not have to solve cos(x)=−2 because it cannot be, so only solve cos(x)=1/2
3 0
3 years ago
Latrell is packing boxes that can contain two types of items. Board games weigh 3 pounds and remote controlled cars weigh 1.5 po
xeze [42]
3x+1.5y\leq25

I hope this helps, I know its late, but maybe it will help other people.
7 0
3 years ago
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