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4 years ago

Eva would like to buy a flute with an original price of $969.40. Which coupon should she use $75.00 off or 10% off

Mathematics

1 answer:

Dmitriy789 [7]4 years ago

8 0

Answer:

10% off would be $96.94

So using the Coupon for 10% off would be the best deal.

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Find the percent of increase or decrease?<br> N to 4/5n?

d1i1m1o1n [39]

Answer:

Decrease by 20%.

Step-by-step explanation:

We have to find the percent of increase or decrease from n to $\frac{4}{5}n$ .

Now, $\frac{4}{5}n = 0.8n < n$

So there is a decrease fro n to $\frac{4}{5}n$ .

Now, the percentage of decrease will be given by

= $[ \frac{\textrm {Original Value - Final Value}}{\textrm {Original Value}}]\times 100 \%$

= $[ \frac{n - 0.8n}{n}]\times 100 \%$

= 20% (Answer)

8 0

3 years ago

4* - 5(2*) + 4 = 0, u = 2* [Note: 4* = (2*)^2<br> Use the substitution given

KengaRu [80]

Answer:

x = 0, 2

Step-by-step explanation:

${4}^{x} - 5( {2}^{x} ) + 4 = 0 \\ {({2}^{x})}^{2} - 5( {2}^{x} ) + 4 = 0 \\ {u}^{2} - 5u + 4 = 0 \\ (u - 1)(u - 4) = 0 \\ u = 1 \: or \: u = 4 \\ {2}^{x} = 1 \: or \: {2}^{x} = 4 = {2}^{2} \\ x = 0 \: or \: x = 2$

5 0

2 years ago

Cynthia gave 15 of her toys to her little sister. If she had 25 toys, how many did she give away?

Phantasy [73]

she gave her sister 5 toys.

4 0

2 years ago

You can upgrade lighting at your factory to LED bulbs that coast 6.95 each and last an average of 5 years.

miskamm [114]

Answer:

$200

Step-by-step explanation:

Here is the full question

You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs $3 in labor to change a bulb. Over a 10-year period, about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?

in 10 years, the bulbs would be changed twice

Total cost incurred per bulb in 10 years = (6.95 + $3) x 2 = $19.90

Since there are 100 bulbs, total cost incurred would be - $19.90 x 100 = $1990

Cost per year = $1990 / (6.95 + $3) = $200

3 0

3 years ago

If AD BD, which of the following relationships can be proved and why?

VLD [36.1K]

IfIf AD BD, the following relationships that can be proved and why is: D. ΔACD ΔBCD, because of SAS.

<h3>Relationship that can be proved if AD=BD</h3>

The relationship that can be proved is ΔACD ΔBCD, because of SAS.

The reason is that m<CDA=M<CDB=90°

CD=CD

AD=BD

Hence, ΔACD=ΔBCD because of SAS. SAS congruence can tend to be proved when the length of the two side correspond and when the angle between the two side is equal.

Therefore the correct option is D.

Learn more about Relationship that can be proved if AD=BD here:brainly.com/question/16906407

#SPJ1

7 0

2 years ago