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slamgirl [31]
4 years ago
7

Work out this problem: 2x + 3x -12x Show you work

Mathematics
1 answer:
joja [24]4 years ago
7 0

Answer:

-7x

Step-by-step explanation:

2x + 3x - 12x

Add 2x + 3x, resulting in 5x

5x - 12x = -7x

It's negative because the -12 is the bigger number.

Hope this helps :D

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An animal shelter has 40 puppies. If the puppies are 32% of the total dog and cat population, how many dogs and cats are in the
dusya [7]
X= total number of animals

Total times percent of puppies equals number of puppies.  Use numbers you know to find x.

x * 32%= 40 puppies
x * 0.32= 40 puppies
0.32x= 40
x= 125 total animals

Total - #puppies = # cats
125 - 40 = 85 cats

Answer- 40 puppies and 85 cats
7 0
4 years ago
Probability and Statistics
Rainbow [258]

Answer:

Step-by-step explanation: if you want to obtain the probability that x<em> </em>\leq-3 , then you need to add the probability for the cases x=-3 and x=-5.

p=0.13+0.17= 0.3

answer=0.3

6 0
3 years ago
The sum of 7/3 and four times a number is equal to 2/3 subtracted from five times the number?
Artyom0805 [142]

Answer:

-3

Step-by-step explanation:

7 0
3 years ago
In a 30° -60° -90° triangle, what is the length of the hypotenuse when the shorter leg is 7 in.?
soldi70 [24.7K]

Answer:

the length of the hypotenuse is 14 in

Step-by-step explanation:

Focus on the 30 degree angle.  Recall that the sine of an angle is defined as

             opposite side        

sin Ф = ----------------------

                hypotenuse  

and that sin 30° is always 1/2.

                                7 in                               1

Then sin 30° = ------------------- must equal -----      

                         hypotenuse                        2

After cross-multiplying this equation, we have 2(7 in) = (1)(hypotenuse),

so that the length of the hypotenuse is 14 in.

6 0
3 years ago
In Diagram 1, the value of x is what?
Bezzdna [24]

Answer:

x = 18.75

Step-by-step explanation:

The angles are alternate interior angles and alternate interior angles are equal when the lines are parallel

3x-10 = 65-x

Add x to each side

3x-10+x = 65-x+x

4x-10 = 65

Add 10 to each side

4x-10+10 = 65+10

4x = 75

Divide each side by 4

4x/4 = 75/4

x = 18.75

8 0
3 years ago
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