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Eva8 [605]
3 years ago
9

Simplify the expression: 7(d - 1) + 2

Mathematics
1 answer:
Alinara [238K]3 years ago
3 0

Answer: 7d-5

I hope it helps you!!!!!

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a jeweler has priced a diamond ring at $850. this price represent $50 less than twice the cost of the ring to the jeweler. find
Alla [95]
850$  = X
Cost of ring = Y

X= (Y x 2) + 50

850= (Y x 2)

900=Y x 2

450 = Y
4 0
3 years ago
Convert from $0.20 dollars to cents
Arada [10]
Since 100 cents = $1

Then to convert $20 to cents, all you have to do is multiply.

 $20 × 100 cents

<em><u>=2000 cents. </u></em>

More examples to try:

Convert $0.10 dollars to cents.

$10 × 100 cents = 1000 cents.

 

Here is a guild for next time:

100 cents = $1
200 cents = $2
300 cents = $3
400 cents = $4
___ cents = $__

So.....now you can fill in the blanks by yourself. Tell me the answer if possible! :D

~Hope this helped!~

 
8 0
3 years ago
Assume that y varies inversely with x. If y=7 when x=2/3, find y when x=7/3
fgiga [73]
Inverse variation is of the form:

y=k/x, which we can express as:

yx=k  we are given the point (2/3, 7) so we can solve for k

7(2/3)=k

14/3=k

y=14/(3x), so when x=7/3

y=(14/3)/(7/3)

y=(14/3)(3/7)

y=2
5 0
3 years ago
What is the total value of the digit 4 in the number: 34,712?<br> 40<br> 1,000<br> 400<br> 4,000
aev [14]

Answer: 4,000

Step-by-step explanation:

It is in the thousands place

4 0
3 years ago
what was the original principal for an 8% simple interest bank account that holds $4340 after 3 years?
strojnjashka [21]

The principal amount is \$3500

<u>SOLUTION: </u>

Given that, simple interest 8\%; \$4340 after 3 years

We have to find the principal.

Now, let the principal amount be p.  

Then, \text { Simple Interest }=\frac{p \times 8 \times 3}{100}=\frac{p \times 24}{100}

Now, we know that, Balance = Principal amount + Simple Interest  

\begin{array}{l}{\rightarrow \$ 4340=p+\frac{24 p}{100}} \\\\ {\rightarrow 4340=p\left(1+\frac{24}{100}\right)} \\\\ {\rightarrow 4340=p \times \frac{100+124}{100}} \\\\ {\rightarrow p=4340 \times \frac{100}{124}} \\\\ {\rightarrow p=35 \times 100} \\\\ {\rightarrow p=3500}\end{array}

5 0
3 years ago
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