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3 years ago

Can someone please answer it correctly please help me I need it

Mathematics

2 answers:

Marat540 [252]3 years ago

8 0

Answer:

I realized my mistake before, the answer is 15%

Step-by-step explanation:

93.80-79.73

you divide that answer by 93.80

* by 100 and add a %

Ludmilka [50]3 years ago

6 0

Answer: 15%

Step-by-step explanation:

Discount percentage = [(original price-discounted price)/original price]*100

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Branlet will be marked so help out all my gemstones

Jobisdone [24]

Answer:

B is the right answer.

Step-by-step explanation:

56 + 0.08x = 164

0.08x = 164 - 56

0.08x = 108

0.08x/0.08 = 108/0.08

x = 1,350

To confirm that:

56 + 0.08x

56 + 0.08(1,350)

56 + 108

= 164

164 is the answer.

6 0

3 years ago

Read 2 more answers

In a series RL circuit, ET = 120 V, R = 40 Ω, and XL = 30 Ω. What is ER?

Delvig [45]

Answer:

The voltage across resistor is $E_{R}=96V$

Step-by-step explanation:

We are given with Voltage across terminals of a series RL circuit, $E_{T}=120V$

And Resistance R=40Ω

And inductor reactance $X_{L}=30$ Ω

Since Resistor and inductor are in series, same current flows through both.

And that current, I = $\frac{E_{T}} {Z}$

$=\frac{120}{\sqrt{40^{2}+30^{2}}}= \frac{120}{\sqrt{2500}}$

= $\frac{120}{50}=2.4A$

Therefore voltage across resistor, $E_{R}=IR=2.4X40=96V$

7 0

4 years ago

Diana had a large stack of playing cards. She knew that 17 of them were kings. She took a sample of 30 cards and found 4 kings.

Mandarinka [93]

Answer:

Diana approximately had 128 cards

Step-by-step explanation:

Let n be the number of cards Diana had. She knows that

there are 17 kings among n cards
4 kings among 30 cards

Write a proportion:

$\dfrac{17}{n}=\dfrac{4}{30}$

Cross multiply:

$4n=17\cdot 30\\ \\4n=510\\ \\n=\dfrac{510}{4}=127.5\approx 128$

5 0

3 years ago

2. Lupita deposits $34,890 in an account that pays 3.2% simple interest. She keeps the money in

Andre45 [30]

Answer:

34890*3.2%*3=$3349.44

3349.44+34890=$38239.44

3 0

3 years ago

I need answer quickly

DerKrebs [107]

Answer: a is the # of elements in A but NOT B, that is A ONLY

b is the # of elements in B but NOT A, that is B only

N is the # of elements in the INTERSECTION of A and B

a + N = 99

b + N = 25

a + b + N = 123

Subtracting the first two equations: a - b = 74

Subtracting the last two equations: -a = -98

a = 98

So then a - b = 74 and a = 98

98 - b = 74

-b = -24

b = 24

a = 98, b = 24 and a + b + N = 123

98 + 24 + N = 123

122 + N = 123

N = 1

98 are in A only

24 are in B only , which is the answer to the question

1 is in both A and B

Step-by-step explanation:

4 0

3 years ago