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3 years ago

PLEASE THIS IS A QUIZ SOMEONE DO THESE IM CRYINGN

Mathematics

2 answers:

coldgirl [10]3 years ago

8 0

Answer:

There are 4 quarters in a dollar and 8 quarters in 2 dollars.

Step-by-step explanation:

a quarter is $0.25 a dollar is $1.00. 0.25+0.25+0.25+0.25=1.00. if 1 dollar is 4 quarters multiply 4 quarters by two to get two dollars

spin [16.1K]3 years ago

8 0

1st answer is 4 second answer is 8

A dollar has a total of 100 pennies and a quarter is 25/100 divide by that the answers will be 4 and do the same for 8

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Three cards are drawn from a standard deck of 52 cards without replacement. Find the probability that the first card is an ace,

MrRissso [65]

Answer:

$4.82\cdot 10^{-4}$

Step-by-step explanation:

In a deck of cart, we have:

a = 4 (aces)

t = 4 (three)

j = 4 (jacks)

And the total number of cards in the deck is

n = 52

So, the probability of drawing an ace as first cart is:

$p(a)=\frac{a}{n}=\frac{4}{52}=\frac{1}{13}=0.0769$

At the second drawing, the ace is not replaced within the deck. So the number of cards left in the deck is

$n-1=51$

Therefore, the probability of drawing a three at the 2nd draw is

$p(t)=\frac{t}{n-1}=\frac{4}{51}=0.0784$

Then, at the third draw, the previous 2 cards are not replaced, so there are now

$n-2=50$

cards in the deck. So, the probability of drawing a jack is

$p(j)=\frac{j}{n-2}=\frac{4}{50}=0.08$

Therefore, the total probability of drawing an ace, a three and then a jack is:

$p(atj)=p(a)\cdot p(j) \cdot p(t)=0.0769\cdot 0.0784 \cdot 0.08 =4.82\cdot 10^{-4}$

4 0

4 years ago

Describe the graph of the function. y = 2x2 + 12x – 15

andriy [413]

The gaph should be a parabola

8 0

4 years ago

Read 2 more answers

Write the equation of the line which contains the point (0,2) and has a slope of 3/4

DanielleElmas [232]

Answer:

y=3/4x+2

Step-by-step explanation:

4 0

3 years ago

What’s the answer to. -4w > 12*

lutik1710 [3]

Answer:

Easyy that is=√y2590

Step-by-step explanation:

that is for the equations

3 0

3 years ago

Someone please help me with this question i really need help

Nina [5.8K]

Answer:

b = 7.76

Step-by-step explanation:

ABC is a triangle. In a triangle, we have the formula as following:

+) Cosine ∠An angle = $\frac{Adjacent side a^{2} + Adjacent side b^{2} - Opposite side^{2} }{ 2 * Adejacent side a* Adejacent side b}$

As we can see in the figure, Angle B has:

+) Adjacent side a is BA = 10

+) Adjacent side b is BC = 12

+) Opposite side is AC = b

The measure of Angle B is 40°.

Replace these into the formula, we have:

+) Cosine ∠B = $\frac{AB^{2}+BC^{2}-AC^{2} }{2ABBC}$

⇔ Cosine 40° = $\frac{10^{2}+12^{2} -b^{2} }{2*10*12}$

⇔ 0.766 = $\frac{244 - b^{2} }{240}$

⇔ 0.766 x 240 = 244- b^2

⇔ 183.84 = 244 -b^2

⇔ b^2 = 244 - 183.84 = 60.16

⇔ b = $\sqrt{60.16}$ = 7.76

7 0

3 years ago