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xxTIMURxx [149]
3 years ago
5

What is -8(×+2)+2(×-1)=​

Mathematics
1 answer:
loris [4]3 years ago
8 0

Answer:

-8x-16+2x-2

-4x = 18

x= -4.5 or -4 1/2

Step-by-step explanation:

You might be interested in
Please help!!!!!!!!
Lynna [10]

Answer: the number, converted to base 10 is 884

Step-by-step explanation:

The table gives symbols for a base 12 numerical system and it is called Caidoz numbers.

Looking at the table, the corresponding Caidozian number that we considering is 618 to base 12. Converting 618 to base 10, it becomes

8 × 12^0 = 8 × 1 = 8

1 × 12^1 = 1 × 12 = 12

6 × 12^2 = 6 × 144 = 864

Therefore, 618 to base 12 to 618 to base 10 would be

8 + 12 + 864 = 884

8 0
3 years ago
25°c convert to ° f​
Thepotemich [5.8K]

Answer:

77

Step-by-step explanation:

i used google to answer it.

x - 32 * 5/9 =25

3 0
3 years ago
The mayor is interested in finding a 95% confidence interval for the mean number of pounds of trash per person per week that is
baherus [9]

Answer:

(30.09, 32.91)

Step-by-step explanation:

Mean number of pounds of trash = x = 31.5 pounds

Standard deviation = s = 7.8 pounds

Sample size = n = 120

Confidence level = 95%

Since, we are given the sample standard deviation instead of the population standard deviation, we will use t-test to find the confidence interval.

Degrees of freedom = df = n - 1 = 120 - 1 = 119

The t-value associated with 95% confidence interval and df=119 from the t-table comes out to be:

t = 1.98

The formula to calculate the confidence interval is:

(x-t\frac{s}{\sqrt{n}}, x+t\frac{s}{\sqrt{n}})\\

Using the values in above expression we get:

(31.5-1.98\times\frac{7.8}{\sqrt{120}}, 31.5+1.98\times\frac{7.8}{\sqrt{120}})\\\\ =(30.09,32.91)

Thus, the 95% confidence interval for the mean number of lbs of trash per person per week that is generated in the city is (30.09, 32.91)

6 0
3 years ago
Solve linear equation y=4-x y=x-4
Hatshy [7]
{ y = 4 - x
   y = x - 4

Subsititute  y = x - 4

[ ( x - 4 )] = 4 - x ]

isolate x for ( x - 4 ) =  4  - x

x = 4

For y  = x - 4

Subsititute<span>  x = 4
</span>
y = 4 - 4

y = 0

Solution 

x = 4  and y = 0

hope this helps!



3 0
3 years ago
Which of the following points is a solution to y ≤ −2x + 3?
Alika [10]

Answer:

d; below; y = −2x + 2

Step-by-step explanation:

the equality  ≤  means left to right that y is equal or less than. We see that 2 is equal or less than 3.

We check the resulting equation also and see that if we +3 it = 1 and if we +2 it equals 0 so we know +2 in answer format can be less than also. But with questions we are measuring the units and +2 is less than +3.

5 0
3 years ago
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