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2 years ago

What is the solution for x in the equation? 9x - 20 - 4x = 40

Mathematics

2 answers:

yan [13]2 years ago

4 0

Answer:

Step-by-step explanation:

X=12

kotykmax [81]2 years ago

4 0

Answer:

x= 12

Step-by-step explanation:

9x-20-4x=40

add 20 on both sides

40+20=60

combine like terms

9x-4x=5x

divide 60 by 5

=12

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In a shipment of onions, 12% are damaged. 1,144 onions are undamaged.

katovenus [111]

Since 12% of them are damaged, that means the percentage of them that aren't 88%.
The easiest way to do it is to divide 88 from 1,144, written as 1,144<span>÷88.
That's 13. So, then you would multiply 13 by 100. To get the total amount of onions. That'd be 1,300.</span>

5 0

3 years ago

F() = x2 + 1<br> g(x) = 5 - x<br> (f+g)(x) =

frutty [35]

Answer:

(f+g)(x) = x² - x + 6

Step-by-step explanation:

We can find (f+g)(x) by adding f(x) and g(x).

f(x) = x² + 1

g(x) = 5 - x

(f+g)(x) = f(x) + g(x)

(f+g)(x) = (x² + 1) + (5 - x)

(f+g)(x) = x² + 1 + 5 - x

(f+g)(x) = x² - x + 6

4 0

2 years ago

A machine is used to fill containers with a liquid product. Fill volume can be assumed to be normally distributed. A random samp

motikmotik

Answer:

There is no statistical evidence at 1% level to accept that the mean net contents exceeds 12 oz.

Step-by-step explanation:

Given that a random sample of ten containers is selected, and the net contents (oz) are as follows: 12.03, 12.01, 12.04, 12.02, 12.05, 11.98, 11.96, 12.02, 12.05, and 11.99.

We find mean = 11.015

Sample std deviation = 3.157

a) $H_0: \bar x= 12 oz\\H_a: \bar x >12$

(Right tailed test)

Mean difference /std error = test statistic

$\frac{11.015-12}{\frac{3.157}{\sqrt{10} } } \\=-0.99$

p value =0.174

Since p >0.01, our alpha, fail to reject H0

Conclusion:

There is no statistical evidence at 1% level to accept that the mean net contents exceeds 12 oz.

3 0

2 years ago

Write a whole number that rounds to 9000 if we are rounding to the nearest thousand

Liono4ka [1.6K]

9001

Or any whole number less than 9500

4 0

3 years ago

Can someone please help me out!!?

HACTEHA [7]

Answer:

x = 7

Step-by-step explanation:

$\frac{10}{8} = \frac{3x-6}{12}$ --> Triangle Similarity Theorem

120 = 8(3x - 6) --> Cross Multiplying

120 = 24x - 48 --> Distributing the 8

24x - 48 + 48 = 120 + 48 --> Adding 48 on both sides

24x = 168 --> Simplifying

24x/24 = 168/24 --> Divide 24 on both sides

x = 7 --> Simplifying

Hope this helped! <3

8 0

2 years ago