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3 years ago

Can I please get help with these ASAP

Mathematics

1 answer:

Gre4nikov [31]3 years ago

7 0

Answer:

Kindly find attached.

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1/4- 1/3 help me solve this please

sp2606 [1]

1/4 - 1/3 = 3/12 - 4/12 = - 1/12

3 0

3 years ago

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Find the solution x-2y=-26 x-y=-2

zalisa [80]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}x-2y=-26\\x-y=-2&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-2y=-26\\-x+y=2\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad-y=-24\qquad\text{change the signs}\\.\qquad\qquad y=24\\\\\text{Put the value of y to the second equation:}\\\\x-24=-2\qquad\text{add 24 to both sides}\\x=22$

3 0

3 years ago

Please help me I really need it please I will friend request you I will give you points, even though I don't have some right now

guapka [62]

Answer:

9.53939 = 9.53 or rounded to 9.54

Step-by-step explanation:

5 0

2 years ago

In the United States, the mean age of men when they marry for the first time follows the normal distribution with a mean of 24.6

Sedbober [7]

Answer:

$z= \frac{25-24.6}{\frac{2.8}{\sqrt{66}}}=1.16$

So we want to find this probability:

$P(z$

And using the normal standard distirbution or excel we got:

$P(z$

Step-by-step explanation:

Let X the random variable that represent the age of men married of a population, and for this case we know the distribution for X is given by:

$X \sim N(24.6,2.8)$

Where $\mu=24.6$ and $\sigma=2.8$

We are interested on this probability

$P(\bar X$

The sample size is n =66. We can use the z score to solve this problem:

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

If we find the z score for 25 we got:

$z= \frac{25-24.6}{\frac{2.8}{\sqrt{66}}}=1.16$

So we want to find this probability:

$P(z$

And using the normal standard distirbution or excel we got:

$P(z$

5 0

3 years ago

Use parentheses to show two ways of grouping the numbers in 12 • 8 • 25. Tell which expression you think would be easier to simp

Natalija [7]

Step-by-step explanation:

First no. is 12

Second no. is 8

Third no. of 25

Way 1 of grouping the numbers,

(12×8)×25

We can use associative law of multiplication as follows :

(a×b)×c = a×(b×c)

(12×8)×25 = (96) × 25

= 2400

Way 2,

12×(8×25) = 12 × 200

= 2400

Way 2 is easier to simplify because when we multiply 8 and 25, we get 200. It is very easy to multiply any number with a number that have zeroes. As a result we easily get the answer i.e. 2400.

5 0

2 years ago

Read 2 more answers