2 years ago

I need help with the second one plz help now 50 points

Mathematics

1 answer:

melomori [17]2 years ago

3 0

Answer:

If the temp is higher so is the amount of people on the beach

Step-by-step explanation:

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Mary has a collection of nickels and quarters for a total value of 4.90.if she has 42 coins total how many of each kind are ther

Ray Of Light [21]

Let x be the number of nickels and y be the number of quarters.

Then, x + y = 42 --- (1)

It is given that total value = 4.90.

Therefore, 0.05x + 0.25y = 4.9 --- (2)

Multiply (1) by 0.25

0.25x + 0.25y = 10.5 --- (3)

Now, subtract (2) from (3), we get,

0.2x = 5.6

Divide both sides by 0.2.

x = 28

x + y = 42

y = 42 - x

= 42 - 28

= 14

Hence, Mary has 28 nickels and 14 quarters in total.

7 0

2 years ago

Pls help i need help with this been working fo a bit

Alex Ar [27]

$\\ \sf\Rrightarrow \dfrac{6}{7}x-\dfrac{2}{5}y+\dfrac{5}{7}(y+x)$

$\\ \sf\Rrightarrow \dfrac{6}{7}x-\dfrac{2}{5}y+\dfrac{5}{7}x+\dfrac{5}{7}y$

$\\ \sf\Rrightarrow \dfrac{6}{7}x+\dfrac{5}{7}x-\dfrac{2}{5}y+\dfrac{5}{7}y$

$\\ \sf\Rrightarrow \dfrac{11}{7}x+\dfrac{-14+25}{35}y$

$\\ \sf\Rrightarrow \dfrac{11}{7}x+\dfrac{11}{35}y$

Done!

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2 years ago

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ra1l [238]

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2 years ago

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Swati recorded this data set, which contains an outlier.

podryga [215]

Answer:

lower quartile: 163 upper quartile: 184

Step-by-step explanation:

1. put the numbers in order from least to greatest. 97, 163, 169, 175, 184, 199

2. find the median. 172

3. find the median of the first 3 numbers to get your Q1. 163

4. find the median of the last 3 numbers to get your Q3. 184

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3 years ago

Which of the following reveals the minimum value for the equation 3x2 + 18x + 15 = 0?

11111nata11111 [884]

Answer:

Step-by-step explanation:

I have no idea

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2 years ago