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nadya68 [22]
3 years ago
13

7×(5-2)=7×_ = _ what is the answer​

Mathematics
2 answers:
MrRissso [65]3 years ago
5 0
7*(5-2) = 7*3 = 21

Hope this helped
makvit [3.9K]3 years ago
4 0

Answer: x=3

Step-by-step explanation:

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On a map, 2 inches represent 35 miles. How many inches would 105 miles be
Genrish500 [490]

Answer:

6 inches

Step-by-step explanation:

105÷35=3

3x2=6

7 0
2 years ago
In a certain lake, trout average 12 in. in length with standard deviation 2.75 in. and the bass average 4 lb. in weight with sta
NISA [10]

Answer:

The bass fish was the better catch

Step-by-step explanation:

From the question we are told that

     The  population mean for trout is  \mu_1  =  12 \ in

     The  standard deviation is  \sigma_1  =  2.75  \  in

      The  population mean for  base  is  \mu _2  =  4 \ lb

      The standard deviation is  \sigma_2  =  0.8 \ lb

      The number of  trout caught   x_1  =  18

     The number of  bass caught  x_2  =  6

Generally z-value(standardized value ) for the of number  trout caught  is mathematically represented as

        z_1 = \frac{x_1 -  \mu_1}{\sigma_1 }

substituting value

       z_1 = \frac{18 -  12}{2.75 }

       z_1 = 2.18

Generally z-value(standardized value ) for the of number  bass caught  is mathematically represented as

        z_2 = \frac{x_2 -  \mu_2}{\sigma_2 }

substituting value

       z_2 = \frac{6 -  4}{0.8 }

       z_2 = 2.5

From our calculation we see that  z_2 >  z_1

The  fish that was the better catch is the bass fish

3 0
3 years ago
The volume of a gold bar is 100cm cubed
Dahasolnce [82]

Answer:

1930g

Step-by-step explanation:

Mass = density × volume

Mass = 19.3×100 = 1930g

6 0
3 years ago
Which expressions are equivalent to 4d+6+2d?
quester [9]

Answer:

(3d+3) + (3d+3)

Step-by-step explanation:

6 0
3 years ago
A metal rod is 25.000cm long at 25.0 degrees Celsius. When heated to 102.0 degrees Celsius, it is 25.054 cm long. What is the co
inn [45]
<span>You may deduce what it represents by analyzing the formula you just wrote.
Well, </span>the coefficient of linear expansion as the fractional change in length per degree of temperature change. 

ΔL = c x L(initial) x ΔT 

where c is the coefficient of linear expansion. You can rewrite the equation to give you c. 

c = ΔL / [L(initial) x ΔT] 

<span>Just substitute the variables and the answer will be
c = 0.000028. </span>

Now, what it represents.It may represent the extent to which the rod expands with temperature when compared to its original length. 
6 0
4 years ago
Read 2 more answers
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