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3 years ago

,please help me solve these 2. problems I am having trouble

Mathematics

1 answer:

Harlamova29_29 [7]3 years ago

4 0

Hi,

1) D

Working :
If the bell rings for 2 weeks straight that means it rings for 14 days.

The bell rings 48 times a day (2 * 24).

The answer is then: 48*14 = 672

2) C

Working:

144 cookies * 8 batches = 864 cookies

864 divided into boxes of 8 = 864 / 8 = 108

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Which inequality represents that - 14 more

babunello [35]

Answer:

A) -14 + 2n > 18

Step-by-step explanation:

inequality represents that - 14 more than twice a number is no less than 18.

<h3>Hope it is helpful...</h3>

7 0

3 years ago

You throw two four-sided dice. Let the random variable X represent the maximum value of the two dice. Compute E(X). Round your a

Troyanec [42]

Answer:

E(X)=3.125

Step-by-step explanation:

We are given that two four sided dice.

Then , the sample space

{(1,1),(1,2),(1,3),(1,4),(2,1),(2,2),(2,3),(2,4),(3,1),(3,2),(3,3),(3,4),(4,1),(4,2),(4,3),(4,4)}

Total number of outcomes=16

Let the random variable X represent the maximum value of the two dice

Outcomes X P(X)

(1,1) 1 1/16

(1,2),(2,1),(2,2) 2 3/16

(1,3),(2,3),(3,1),(3,2),(3,3) 3 5/16

(1,4),(3,4) ,(2,4),(4,1),(4,2),(4,3),(4,4) 4 7/16

Using the probability formula

$P(E)=\frac{Favorable\;outcomes}{Total\;number\;of\;outcomes}$

Now,

$E(X)=\sum_{i=1}^{n}x_iP(x_i)$

$E(x)=1(1/16)+2(3/16)+3(5/16)+4(7/16)$

$E(x)=\frac{1+6+15+28}{16}$

$E(x)=\frac{50}{16}=3.125$

7 0

3 years ago

What is 1.584x10 to the seventh power is in standard notation.

Eva8 [605]

Answer:

None

Step-by-step explanation:

Thats not how math works

The proper answer would be 15,840,000,000

3 0

3 years ago

Suppose that y varies jointly with w and x and inversely with z and y = 175 when w = 5, x = 20 and z = 4. Write the equation tha

Allisa [31]

A]<span>Given that y varies jointly with w and x and inversely with z and y = 175 when w = 5, x = 20 and z = 4.
then
y=kwx/z
where k is the constant or proportionality given by:
k=yz/wx
but
y=175, when w=5, x=20, z=4
hence
k=(175*4)/(5*20)
k=7
Thus the equation is:
y=(7xw)/z

b]</span><span>find y when w = 2, x = 24 and z = 6.
y=(7*2*24)/6
y=336/6
y=56</span>

4 0

3 years ago

You invest $3,150.00 in a stock plan. The first year, it loses 5% of its value. The second year, it gains 9% of its value. What

Norma-Jean [14]

First year it loses 5%
3,150×(1−0.05)
=2,992.5
second year gains 9%
2,992.5×(1+0.09)
=3,261.825

4 0

3 years ago

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