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postnew [5]
3 years ago
12

What is 2x-9=5x+12 with the step by step

Mathematics
2 answers:
snow_lady [41]3 years ago
6 0

Answer:

2x - 9 = 5x + 12 \\  - 3x = 21 \\   x =  - 7

Step-by-step explanation:

<em>x</em><em> </em><em>=</em><em> </em><em>-7</em>

jenyasd209 [6]3 years ago
3 0

Answer:

x = -7

Step-by-step explanation:

Please view the detailed answer in the image attached

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What is the area and perimeter of the triangle ABH? How do I solve it? The process and answers? I am trying to help my 7th grade
n200080 [17]

Step-by-step explanation:

I dont remember perimeter but area is A= 1/2 bh

7 0
3 years ago
hello. I hope your day was fine and have some difficulties in the three question I just took a picture of please help me ​
goblinko [34]
What do you wanna find in these questions?
3 0
3 years ago
Given cos theta=4/9 and csc theta 0 find sin theta and tan theta
Korvikt [17]
The correct question is
<span>Given cos theta=4/9 and csc theta < 0 find sin theta and tan theta
</span>
we know that
csc theta=1/sin theta
if csc theta < 0
then 
sin theta < 0

we have that
<span>cos theta=4/9

we know that
sin</span>² theta+cos² theta=1
so
sin² theta=1-cos² theta-----> 1-(4/9)²----> 1-(16/81)----> 65/81
sin theta=-√(65/81)---->-√65/9

the answer Part a) is 
sin theta=-√65/9

Part b) find tan theta

tan theta=sin theta/cos theta
tan theta=(-√65/9)/(4/9)-----> tan theta=-√65/4

the answer part b) is
tan theta=-√65/4
5 0
3 years ago
Read 2 more answers
Write the equation in slope-intercept form:<br> 3y = 2x +15
Sergeu [11.5K]

Answer:

y = 2/3x + 5

Step-by-step explanation:

Hope this helps! :)

3 0
3 years ago
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.
mote1985 [20]

The confidence interval for the mean usage of water is (18.7,20.5).

Given population standard deviation of 2.4, mean of 19.5 gallons per day and confidence interval of 98%.

We have to find the confidence interval for the mean usage of water.

To find out the confidence interval we have to first find margin of error.

μ=19.5

σ=2.4

α=0.98

α/2=0.49

We have to find the z value for the p value 0.49 which is z=2.33

Margin of error=z*μ/\sqrt{n}

=2.33*19.5/\sqrt{3034}

=0.82

lower level=mean -m

=19.5-0.82

=18.68

after rounding upto 1 decimal

=18.7

upper mean = mean+m

=19.5+0.82

=20.52

Hence the confidence interval for the usage of water is (18.7,20.52).

Learn more about margin of error at brainly.com/question/10218601

#SPJ4

7 0
2 years ago
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