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vagabundo [1.1K]
3 years ago
14

Help, please..................

Mathematics
1 answer:
sesenic [268]3 years ago
7 0

Answer:

9

Step-by-step explanation:

9

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Which property is shown (5×3)+(5×9)=5×(3+9)
mote1985 [20]
Resolve to do so
5x3=15 
5x9=45 
3+9=12
15+45=5x12 
15+45=60 
5x12=60 
60=60
Which property is shown I did not understand but I think with the result 60 = 60 alone, but you will understand if you can not send me a comment, so I'll try to make you understand  =)

8 0
3 years ago
In a woodworking class, you need to make five triangles out of plywood. Each triangle has a height of 6 inches and a base of 14
vampirchik [111]
The area of a triangle can be calculated through the equation,
                            A = bh / 2
where A is area, b is base, and h is height. 
Substituting the known values from the given above to the equation
                            A = (14 in)(6 in) / 2 = 42 in²
Since, there are five of these triangles, the total area is,
                            total area = 5(42 in²) = 210 in²
Thus, the total area of the plywood needed is 210 in².
6 0
3 years ago
Read 2 more answers
Four times a number decreased by seven
Elden [556K]
In order to answer this question, we must break this mathematical expression up into a series of mathematical operations (exponent, multiplication,division, addition, and/or subtraction):

"4 times a number" - The word "times" implies that we have to multiply 4 by an unknown number. We can simply label this unknown number as x.
"cubed" - In order to "cube" a number, we must raise it to the third power, or have an exponent of 3. Our unknown number of x now becomes x3 because we raised it to the third power.
"decreased by 7" - The word "decreased" implies that we must subtract 7 from the product of 4 multiplied by x3

With all of the information we now have, we can form an algebraic expression for this problem.
"4 times a number cubed decreased by 3" now becomes:
4x3 - 7
7 0
3 years ago
2. Ali is collecting signatures for a petition,
swat32

Step-by-step explanation:

Since the options are not clear enough, please kindly see the attached file for more explanation

7 0
3 years ago
This question. Help?
kompoz [17]

Answer:

52.3 about;)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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