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gogolik [260]
3 years ago
14

Find a value of X so that the figure is a square.

Mathematics
2 answers:
rodikova [14]3 years ago
5 0
Hello !
We know that a square has all equal sides.

That means the side 3x+39 is equal to the side 3(5x-3):
            

           3x+39 = 3(5x-3)
           3x+39 = 15x-9   | - 3x 
           3x-3x+39 = 15x-3x-9
                   39 = 12x-9  | + 9
                   39 + 9 = 12x-9+9
                   48 = 12x  | ÷ 12
                   x = 48/12 ⇔ x = 4

 


So,one side is 3*4 + 39 = 12 + 39 = 51
And the other side is 3(5*4 - 3) = 3(20-3) = 3*17 = 51



As you can see,the sides are equal.
drek231 [11]3 years ago
4 0
3(5x-3)=3x+39
15x-9=3x+39
12x=48
x=4
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Scott and Nikki each have a full 1.5-gallon container of liquid laundry detergent. The lid on Scott's container can hold 3 fluid
Tom [10]

Given:

Scott and Nikki each have a full 1.5-gallon container of liquid laundry detergent.

Lid on Scott's container can hold 3 fluid ounces of detergent.

Lid on Nikki's container can hold 4 fluid ounces of detergent.

To find:

The number of lids full of detergent Scott have more than Nikki.

Solution:

We know that,

1 gallon = 128 fluid ounces

1.5 gallon = 192 fluid ounces

Lid on Scott's container can hold 3 fluid ounces of detergent. So, number of lids full of detergent Scott have is

\dfrac{192}{3}=64

Lid on Nikki's container can hold 4 fluid ounces of detergent.  So, number of lids full of detergent Nikki have is

\dfrac{192}{4}=48

Difference between number of lids is

64-48=16

Therefore, Scott have 16 lids more than Nikki. Hence, the correct option is B.

5 0
3 years ago
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La apotema de un hexagono regular mide 5.2 cm. Calcula el lado y el area delo hexagono. Por favor es urgente
Marta_Voda [28]

Bonjour,

Soit c le côté de l' hexagone.

On a 5.2²+(c/2)²=c²

==>c²=5.2*4/3

c²=104/15

c=√(104/15)=2,6331223544175332023251281391631...

Aire de l'hexagone= 5.2*c/2*6=41,076708728913517956271998970944

Je me suis permis de répondre en Français car l'énoncé était en Espagnol. (Thanks to Google translator)

8 0
3 years ago
Allen’s phone company charges him $20 a month and $5 per gig of data used. His bill last month was $55. Write an equation to rep
Ilia_Sergeevich [38]

Answer:

x (constant) = 20 ((month)) y (variable) = 5 ((gig of data))

Step-by-step explanation:

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2 years ago
A university class has 22 students: 3 are nursing majors, 9 are psychology majors, and 10 are business majors. (Each student has
KiRa [710]

Answer:

27/462

OR

.058

Step-by-step explanation:

the probability that the first student, selected at random, is a nursing student is 3/22.

the probability that the second student, selected at random from the remaining students, is an accounting major is 9/21.

the probability the first student chosen is a nursing student and the second student chosen is an accounting major is therefore 3/22 * 9/21 = 27/462.

7 0
2 years ago
2 more ASAP thanks for all the help btw
natta225 [31]

Answer: B

Step-by-step explanation:

It's the only one that's correct.

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3 years ago
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