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3 years ago

Evaluate the expression 2x+3 if x= 3

Mathematics

2 answers:

ikadub [295]3 years ago

6 0

Answer:

Step-by-step explanation:

2(x=3)+3

6+3

It is nine

Citrus2011 [14]3 years ago

4 0

let the value be a

2x+3=a

2(3)+3=a

6+3=a

9=a

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NEED HELP ON ALL OF THESE PLEASE

tangare [24]

Answer:

1) 2670m^2

2) 4718 in^2

3) 4730 ft^2

4) 7900cm^2

5) 11 542mm^2

6) 3740m^2

7) 6374m^2

8) 2824 ft^2

9) 6004mm^2

Step-by-step explanation:

Area of a rectangular prism = 2wl + 2lh + 2hw

Where,

w = width

l = length

h = height

1) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 10m; l = 31m; w = 25m

Area = 2(25m)(31m) + 2(31m)(10m) + 2(10m)(25m)

= 2(775m^2) + 2(310m^2) + 2(250m^2)

= 1550m^2 + 620m^2 + 500m^2

= 2670m^2

2) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 21 in; l = 35 in; w = 29 in

Area = 2(29in)(35in) + 2(35in)(21in) + 2(21in)(29in)

= 2(1015in^2) + 2(735in^2) + 2(609in^2)

= 2030in^2 + 1470in^2 + 1218in^2

= 4718 in^2

3) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 19 ft; l = 39ft; w = 28ft

Area = 2(28ft)(39ft) + 2(39ft)(19ft) + 2(19ft)(28ft)

= 4730 ft^2

4) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 24,cm; l = 49cm; w = 38cm

Area = 2(38cm)(49cm) + 2(49cm)(24cm) + 2(24cm)(38cm)

= 7900cm^2

5) 11 542mm^2

6) 3740m^2

7) 6374m^2

8) 2824 ft^2

9) 6004mm^2

Note : Kindly follow the same process for the remaining questions, you'd get their correct answers. I can't finish up due to time constraints. However, you may send me a direct message for the remaining answers. Thank you.

5 0

3 years ago

Read 2 more answers

What expression are equivalent to 35+30s-45t i need 2 answers

Svetlanka [38]

Answer:

35+15s+15s-25t-20t

and 35+20s+10s-15t-30t

Step-by-step explanation:

i tried

5 0

3 years ago

How can you use the multiplication property of equality to rewrite the equation 0.6x + 4.8 = 7.2

Kobotan [32]

$0.6x + 4.8 = 7.2$

$0.6x=7.2-4.8$

$0.6x=2.4$

$x=4$

7 0

2 years ago

Read 2 more answers

These ordered pairs, {(2,4) (3,6) (4,8) (5,10)}, are a function. True False

ki77a [65]

Answer:

True

Step-by-step explanation:

In order for a relation (a set of ordered pairs) to be considered a function, every value in the domain (the set of all the first numbers in the pair) is associated with one value in the range (the set of all second numbers in the pair). This is easiest to see visually. Our domain is the set {2, 3, 4, 5} and our range is the set {4, 6, 8, 10}, and we can visualize the ordered pair (2, 4) as an "arrow" starting a 2 in the domain and ending at 4 in the range. When seen this way, a relation is a function if every value in the domain only has one arrow coming out of it. We can see from the attached picture that the ordered pairs in the problem are a function, so this statement is true.

8 0

3 years ago

Calculate (1.6) · (0.215). Show your reasoning.

EleoNora [17]

Answer:

0.344

Step-by-step explanation:

i cant show reasoning its just 1.6 times 0.215

8 0

3 years ago