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xxTIMURxx [149]
3 years ago
10

Which is the value of x in the equation 5x= 15

Mathematics
2 answers:
zmey [24]3 years ago
8 0
The value of x is 3.

In order to get this answer, you need to isolate the x. You do this by simply dividing both sides by 5. Dividing 5x by 5 will result In x and dividing 15 by 5 will result in 3. Therefore, x = 3
MatroZZZ [7]3 years ago
7 0
It is 3 because you take 5 times 3 and it equals 15
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The perimeter of a rectangle is 128 cm, and the ratio of its sides is 5: 3. Find the area of ​​a rectangle
Juliette [100K]

Answer:

Area = 960 cm^2

Step-by-step explanation:

Perimeter (P) = 2 (l + w)

P = 2l + 2w

Let the length be 5x

Let the width be 3x

From the question, P = 128.

Therefore:

128 = 2l + 2w

Divide both sides by 2.

l + w = 64

Recall we said:

l = 5x

w = 3x

So then:

5x + 3x = 64

8x = 64

Divide both sides by 8

x = 64/8

x = 8.

Since x = 8

Length = 5x = 5*8 = 40cm

Width =3x = 3 * 8 = 24cm

Area of a RECTANGLE:

Area = length * width

Area = 40 * 24

Area = 960 cm^2

7 0
3 years ago
What’s the x on this triangle ?
Dmitry [639]

Answer:

x = 5

Step-by-step explanation:

x is the length of the hypotenuse of this triangle.  The length of one of the legs of the triangle is 3" and that of the other leg is 4".

Applying the Pythagorean Theorem:  x^2 = 3^2 + 4^2, or 25

Thus, the length x is +√25, or 5.

x = 5

7 0
2 years ago
5 pounds is how many ounces
chubhunter [2.5K]

Answer:

80 ounces

Step-by-step explanation:

There are 16 ounces in a pound. So to convert from pounds to ounces, you multiply 5 by 16, which is 80.

4 0
3 years ago
Is this correct now?
Makovka662 [10]
I would say no it’s not correct, the point is not in the correct place
8 0
2 years ago
(1+1/3)^2−2/9 I am about to have a mental breakdown, please somebody answer
Archy [21]

Answer:

\frac{14}{9} = 1\frac{5}{9} \\\\1.5

Step-by-step explanation:

(1+1/3)^2-2/9\\\\= \left(1+\frac{1}{3}\right)^2-\frac{2}{9}\\\\\left(1+\frac{1}{3}\right)^2=\frac{4^2}{3^2}\\\\=\frac{4^2}{3^2}-\frac{2}{9}\\\\\frac{4^2}{3^2}=\frac{16}{9}\\\\=\frac{16}{9}-\frac{2}{9}\\\\\mathrm{Apply\:rule}\:\frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}\\\\=\frac{16-2}{9}\\\\\mathrm{Subtract\:the\:numbers:}\:16-2=14\\=\frac{14}{9}

8 0
3 years ago
Read 2 more answers
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