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2 years ago

Simlplify the expression. 2.3h(6-k)

Mathematics

1 answer:

makvit [3.9K]2 years ago

3 0

Answer:

13.8h-2.3hk

Step-by-step explanation:

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I need help with 4 and 5 please

Tamiku [17]

Answer:

Step-by-step explanation:

to find 4, you use the equation $a^{2}+b^{2}=c^{2}$ where the c= hypotenuse, which is the slant of the triangle. Then you width and length can by put as a and b. This gives you $15^{2}+4^{2} = s^{2}$ . Then you solve for s which end up being 15.5.

3 0

3 years ago

I don't get math very much so plz help me

padilas [110]

A. 167.1 i believe
b. 20.25 i believe
c. 829.74 i believe
d. what is exactly d couldn't see the whole thing

6 0

3 years ago

Simplify the ratio 18 : 30 : 72

Gemiola [76]

To simplify this ration we need to divide each member of ration with same number.
We can start with 2.
18/2: 30/2 : 72/2 or
9:15:36

Now we can divide by 3 because 15 isn't divisible by 2.
we get:
3:5:12

This ration cannot be simplified further.

4 0

3 years ago

Read 2 more answers

A plant in the manufacturing sector is concerned about its sulfur dioxide emissions. The weekly sulfur dioxide emissions follow

egoroff_w [7]

Answer:

The correct option is b) 1.70

Step-by-step explanation:

Consider the provided information.

The weekly sulfur dioxide emissions follow a normal distribution with a mean of 1000 ppm (parts per million) and a standard deviation of 25.

Thus, μ=1000 and σ = 25

The CEO wants to know if the mean level of emissions is different from 1000.

Therefore the null and alternative hypothesis is:

$H_0:\mu =1000$ and $H_a:\mu \neq1000$

The sample size is n = 50 and $\bar x=1006$ ppm.

Now calculate the test statistic by using the formula: $z=\frac{\bar x-\mu}{\frac{\sigma}{\sqrt{n}}}$

Substitute the respective values in the above formula.

$z=\frac{1006-1000}{\frac{25}{\sqrt{50}}}$

$z=\frac{6}{\frac{25}{\sqrt{50}}}=1.697\approx 1.70$

Hence, the correct option is b) 1.70

7 0

3 years ago

A wise man once said 500 reduced by 4 times my age is 232. what is his age

11Alexandr11 [23.1K]

Well 500 reduced by 4 times my age is 232...
The first step to discover the age (I'll assume that's your question) is subtract 232 from 500 500-232 equals 268. Divide this by 4 to get 67. Boy, that's a pretty old age. Hope this helps!

3 0

3 years ago