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Sladkaya [172]
3 years ago
12

I only need the answer for number 8 in this picture! please and thank you!!

Mathematics
2 answers:
Natali [406]3 years ago
8 0

Answer:

I cant see the full picture of the bottom triangle

Step-by-step explanation:

Leona [35]3 years ago
8 0

Answer:

Step-by-step explanation: you divide 11 by 5 because you know the length for the same side on both of those triangles therefore you divide the number for the larger figure by thesmaller one and you get you get your scale factor (the number you divide or multiply by to shrink ir stretch a figure to equal the size a similar figure). Now knowing what you scale factor is you can multiply 6 times 2.2 to get 13.2. Also you multiply 6 and 2.2 because on both triangles if you were to rotate them 6 and x are the same side of both triangles. I hope I helped.

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the gestation period of rhinos (487 days) is what percent longer than the gestation period of dogs (65days).
marishachu [46]

percent change = ((new value) - (reference value))/(reference value) × 100%

... = (487 -65)/65 × 100%

... = 422/65 × 100%

... = 6.492 × 100%

... ≈ 649%

The gestation period of rhinos is 649% longer than the gestation period of dogs.

4 0
3 years ago
The ratio of boys to girls in Mr. Smith's class is 3:2.
ankoles [38]

Answer: A and E

Step-by-step explanation: since the question says boys to girls and not girls to boys we assume the first number in the ratio is boys. This makes A correct 3 boys for every 2 girls. And 3+2 is 5 so for every 5 students there are 2 girls because you add the 3 boys

7 0
3 years ago
275 miles on 14 gallons<br><br><br>pls hurry
vaieri [72.5K]

Answer:

1 gallon per 19.64mi

Step-by-step explanation:

275/14 =19.6428571429

8 0
2 years ago
Read 2 more answers
The volume, V, of a right cone varies jointly with the square of the radius of the base, r, and the height, h. When r = 6 and h
Sveta_85 [38]

Answer:

V=πr^2(h/3)

Step-by-step explanation:

V=π6^2(8/3)

6 0
3 years ago
Ayuda con mates por favor
QveST [7]

Answer:

a) x = -1 and  y = 5, b) x = 2 and y = -1, c) x = -2 and y = 1, d) x = 2 and y = -9, e) x = 2 and y = -2, f) x = 2 and y = -1, g) x = 2 and y = -1, h) x = 1 and y = 2.

Step-by-step explanation:

Each system is solved as follows (Cada sistema es resuelto como sigue):

a) 2\cdot x + y = 3 and 3\cdot x - y = -8

y = 3 - 2\cdot x

3\cdot x - 3 + 2\cdot x = -8

5\cdot x = -5

x = -1

y = 5

b) x - 2\cdot y = 4 and -x+3\cdot y = -5

x = 4 + 2\cdot y

-4-2\cdot y+3\cdot y = - 5

-4+y = -5

y = -1

x = 2

c) -2\cdot x + 5\cdot y = 9 and x - y = -3

x = y-3

-2\cdot y +6 +5\cdot y = 9

3\cdot y = 3

y = 1

x = -2

d) 5\cdot x - 4\cdot y = 2 and 3\cdot x + 2\cdot y = -12

3\cdot x + 2\cdot y = -12

6\cdot x + 4\cdot y = -24

4\cdot y = -6\cdot x -24

5\cdot x +6\cdot x +24 = 2

11\cdot x = -22

x = 2

y = -9

e) x + y = 0 and 2\cdot x +3\cdot y = -2

y = -x

2\cdot x -3\cdot x = -2

-x = -2

x = 2

y = -2

f) 3\cdot x + 5\cdot y = 1 and x + y = 1

y = 1 - x

3\cdot x + 5 - 5\cdot x = 1

-2\cdot x = -4

x = 2

y = -1

g) 5\cdot x - 2\cdot y = 12 and 4\cdot x + 3\cdot y = 5

x = \frac{12+2\cdot y}{5}

x = \frac{5-3\cdot y}{4}

\frac{12+2\cdot y}{5} = \frac{5-3\cdot y}{4}

4\cdot (12+2\cdot y) = 5\cdot (5-3\cdot y)

48 + 8\cdot y = 25 - 15\cdot y

23\cdot y = -23

y = -1

x = 2

h) 7\cdot x + 8\cdot y = 23 and 3\cdot x + 2\cdot y = 7

3\cdot x + 2\cdot y = 7

12\cdot x + 8\cdot y = 28

8\cdot y = 28 - 12\cdot x

7\cdot x +28-12\cdot x = 23

-5\cdot x = -5

x = 1

y = 2

8 0
3 years ago
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