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Usimov [2.4K]
3 years ago
11

Solve the proportion 7/5=21/x

Mathematics
1 answer:
Marysya12 [62]3 years ago
8 0

Answer:

=15

Step-by-step explanation:

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Picture is in frame please answer
almond37 [142]

Answer:

B. Honest

Step-by-step explanation:

lts because si marcos nikatkat sa punuan sa monggos

3 0
3 years ago
The perimeter of a triangle is 19 cm. If the lengh of the longest side is twice
aliya0001 [1]

If the  perimeter of a triangle is 19 cm. The lengths of 3 sides is: a = 8, b = 7, c = 4.

<h3>Parimeter</h3>

Let a = longest

Let b= shortest

Let c= third side

a = 2c

a = (b+ c) - 3

a + 3 = b + c

Using three variables to solve the expression for perimeter

Perimeter= 19 cm

a+ b + c = 19

a + (a + 3) = 19

2a + 3 = 19

2a= 16

Divide both side by 2a

a=16/2

a = 8

a = 2c

8 = 2c  

c=8/2

c = 4

a + b + c= 19

8 + b + 4 = 19

12 + b = 19

b=19-12

b = 7

Hence,

a = 8, b = 7, c = 4

Therefore If the  perimeter of a triangle is 19 cm. The lengths of 3 sides is: a = 8, b = 7, c = 4.

The complete question is:

Perimeter of triangle is 19cm. If the length of the longest side is twice that of the shortest side and 3 less than the sum of the lengths of the 2 sides find lengths of 3 sides.

Learn more about perimeter here:brainly.com/question/19819849

#SPJ1

7 0
2 years ago
A ranger stands at the top of a 140-foot tower. She spots a tent at a 14° angle of depression.   What is the distance from the t
Ksenya-84 [330]
Angle of depression=14°
height of tower=h=140 ft
   
                             tan(14°)=x/140
                             x=34.906 ft (distance from tent to the base of tower)

6 0
4 years ago
Tara is the editor of the school newspaper. She tries to devote about 1/2 of the paper to news, 1/3 to pictures, and the remaind
Klio2033 [76]
5/6 of the paper is devoted to news and pictures

first I made the fraction have equal denominators which was 6 by doing that I multiplyed the numerator and the denominator

1/2
1×3=3
2×3=6
therefore 1/2 being equivalent to 3/6


1/3
1×2=2
3×2=6
therefore 1/3 being equivalent to 2/6

now you would be able to add the numerators, so 2+3=5
therefore being 5/6 of the paper is devoted to news and pictures
4 0
3 years ago
HELP PLEASE! Step by step
ExtremeBDS [4]

Answer:

6 cm

Step-by-step explanation:

Area of a rectangle = length * width

Here, length and width are 12 cm and 3 cm, so

Area = 12*3 = 36 cm squared

Area of a square = side * side

36 = 6*6

Thus, side = 6 cm

8 0
3 years ago
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