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grandymaker [24]
3 years ago
6

Solve the equation 7h-5(3h-9)=-72

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
7 0
7h-5(3h-9)=-72

7h-15h+45=-72

-8h+45=-72

-8h+45-45=-72-45

-8h=-117


-8h/-8=-117/-8
h=117/8 
Hope this helps :)
STALIN [3.7K]3 years ago
3 0
H=14 is your answer.

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I need help with this
sergejj [24]

Answer:

20

Step-by-step explanation:

<em>5+5+5+5</em>

6 0
3 years ago
Will give brainiest to correct answer<br><br><br> 40x + 45
snow_tiger [21]

Answer:

x= 1.125

Step-by-step explanation:

first we want to get the variable by itself so divide

just divide 45 by 40

5 0
2 years ago
Read 2 more answers
The number of days that homes stay on the market before they sell in Houston is bell-shaped with a mean equal to 56 days. Furthe
antoniya [11.8K]

Answer:

D. 8

Step-by-step explanation:

We have been given that the number of days that homes stay on the market before they sell in Houston is bell-shaped with a mean equal to 56 days. Further, 95 percent of all homes are on the market between 40 and 72 days.

As per empirical rule 95% of the data on bell curve lies between 2 standard deviations of mean.

So we can set an equation as:

72-56=2\sigma or

40-56=-2\sigma

16=2\sigma

\frac{16}{2}=\frac{2\sigma}{2}

8=\sigma

40-56=-2\sigma

-16=-2\sigma

\frac{-16}{-2}=\frac{-2\sigma}{-2}

8=\sigma

Therefore, the standard deviation for our given data is 8 and option D is the correct choice.

6 0
2 years ago
Please help having trouble!
zmey [24]

Answer:

Option C is the correct choice that is y

Step-by-step explanation:

As this is a multiple choice question we will reduce the options and work on it with the given points (0,-2),(-2,-3)

Note:We know that \leq ,\geq where there is = sign associated with it have a straight line graph there is no breaking in the line.

And when there is simply we have a dashed line when we plot it on a graph.

So option B and D are discarded.

Now one-by one we will put the values (x,y)\ (-2,3) to know which equation it satisfies.

If we put y=3 then x=-2.

So working with option A.

y

Plugging the values.

3

And we know that x must be equal to -2 so this is not the right answer.

We are left with only one choice that is C .

So option C is the correct option of the above inequality.

7 0
3 years ago
Which number would make the sentence true?
AURORKA [14]

Answer:

22% = 0.22

Step-by-step explanation:

Lat'e express all the given numbers in decimal form so we understand how they are located on the number line.

We start with 2/11 , since the number we are looking for has to be larger than this \, and smaller than 1.42:

\frac{2}{11} = 0.181818181818...

So we understand that we are looking for a number that can be placed between the lower boundary (0.181818...) and the upper boundary (1.42) on the number line. That is: we are looking for a number greater than 0.18181818... and less than 1.42.

Now let's look at each of the given options (also writing them in decimal form to facilitate the comparison with the lower and upper boundaries we just found):

1\frac{2}{3} = 1.66666666... This number is grater than the upper boundary given to us (1.42), it would be placed to the right of 1.42 on the number line. Therefore we discard it for not being in the requested interval (section) of the number line.

0.153 is already in decimal form, and clearly less than (thus to be placed on the left of) the lower boundary (0.181818...) of the requested interval. Therefore we discard it for not being in the requested interval (section) of the number line.

22% in decimal form is written as: \frac{22}{100} = 0.22. This number is greater than the lower boundary (0.181818...) and also less than the upper boundary (1.42). Therefore it is a choice that would make the sentence true.

1.3*10^1=1.3*10=13 which is clearly greater than the upper boundary of the interval, so we discard it.

7 0
3 years ago
Read 2 more answers
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