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4 years ago

1) Jesse agrees to watch his friend's dog, Spot. His friend leaves 119 ounces of

Mathematics

1 answer:

geniusboy [140]4 years ago

7 0

Answer:

17 ounces

Step-by-step explanation:

you first divide 119÷7 = 17 which is your answer

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Which expression is equal to 254−−√−424−−√ ?

hichkok12 [17]

Answer:

$-2\sqrt{6}$

Step-by-step explanation:

<u><em>The correct expression is</em></u>

$2\sqrt{54}-4\sqrt{24}$

we know that

$54=(2)(3^3)=(3^2)(2)(3)=(3^2)(6)$

$24=(2^3)(3)=(2^2)(2)(3)=(2^2)(6)$

substitute in the expression above

$2\sqrt{(3^2)(6)}-4\sqrt{(2^2)(6)}=2(3)\sqrt{6}-4(2)\sqrt{6}=6\sqrt{6}-8\sqrt{6}=-2\sqrt{6}$

5 0

3 years ago

Christopher compró un nuevo reloj en la tienda cuando tenían una rebaja de 20%. Si el precio normal del reloj era $48, ¿cuánto p

Otrada [13]

Answer:

38.40

Step by Step

48•0.8

3 0

3 years ago

Please show work for number 3 and 4!

svetoff [14.1K]

Answer:

Three: x = 400

Four : 9

Step-by-step explanation:

Three

a = 10*√2

2a = √(2x) Square both sides.

4a^2 = 2x Divide both sides by 2

2a^2 = x Put a = 10√2 into a^2

2(10√2)^2 = x Square a

2(100*2) = x Multiply the result by 2.

2(200) = x

x = 400

Four

x^(a^2) / x ^(b^2) = x^36

Substitute a + b = 4 in for b.

x^(a^2) / x^(4 - a)^2 = x^36

Subtract powers

x^(a^2 - (4 - a)^2 = x^36

x^(a^2 - (16 - 8a + a^2) = x^36

Gather like terms

x^(8a - 16) = x^36

The powers are now equal

8a - 16 = 36

Add 16 to both sides

8a = 36 + 16

8a = 52

Divide by 8

a = 6.5

Solve for b

a + b = 4

6.5 + b = 4

b = 4 - 6.5

b = - 2.5

a - b = 6.5 - (- 2.5) = 9

7 0

3 years ago

Approximately 80,000 marriages took place in the state of New York last year. Estimate the probability that for at least one of

sasho [114]

Answer:

a)0,45119

b)1

Step-by-step explanation:

For part A of the problem we must first find the probability that both people in the couple have the same birthday (April 30)

$P=\frac{1}{365} *\frac{1}{365}=\frac{1}{133225} \\$

Now the poisson approximation is used

λ=nP=80000*1/133225=0,6

Now, let X be the number of couples that birth April 30

P(X ≥ 1) =

1 − P(X = 0) =

$1-\frac{(e^-0.6)*(-0,6)^{0} }{0!}$

P(X ≥ 1) = 0,45119

B) Now want to find the

probability that both partners celebrated their birthday on th, assuming that the year is 52 weeks and therefore 52 thursday

$P=52*\frac{1}{365} *\frac{1}{365}=\frac{52}{133225} \\$

Now the poisson approximation is used

λ=nP=80000*52/133225=31.225

Now, let X be the number of couples that birth same day

P(X ≥ 1) =

1 − P(X = 0) =

$1-\frac{(e^-31.225)*(-31.225)^{0} }{0!}$

P(X ≥ 1) = 1

6 0

3 years ago

Column

Artist 52 [7]

I think the answer is C hope this helps

6 0

3 years ago