Vamos calcular quantos metros de corda Maria comprou na segunda vez:
33 - 21 = 12
Ela pagou R$ 9,60 a mais na segunda compra do que na primeira.
Logo, Maria pagou R$ 9,60 em 12 metros
Agora vamos calcular quanto ela pagou por metro:
9,60 ÷ 12 = 0,80
R$ 0,80 por metro
Para saber quanto Maria gastou na primeira compra multiplicamos os 21 metros pelo seu valor unitário:
21 × 0,8 = 16,80
Resposta: R$ 16,80 Letra B
Domain includes all the x-values in the function. Range includes all the y-values in the function.
The first table has x-values of -1, 3, and 6, and y-values of 4, 5, and 6. This means that the domain and range would be given by the following sets:
Domain: {-1, 3, 6}
Range: {4, 5, 6}
The second set of points has x-values of -4, -4, -3, and 1, and y-values of 1, 1, 3, and 4. Duplicate points are not listed within the domain and range, so the domain and range would be given by the following sets:
Domain: {-4, -3, 1}
Range: {1, 3, 4}
Answer:
I believe that
1) Isosceles, acute
3) Scalene, obtuse
5) Isosceles, right
7) Equilateral, acute
Step-by-step explanation:
This should help in the future. :)
Answer:
- 4x + 36
Step-by-step explanation:
(
- 6)² = ( - 6)( - 6)
Each term in the second factor is multiplied by each term in the firs t factor, that is
( - 6) - 6( - 6)
Distribute both parenthesis
= - 2x - 2x + 36 ← collect like terms
= - 4x + 36
Answer:
Step-by-step explanation:
The segment addition theorem tells you ...
CD +DE = CE
x^2 +12x = 32 -2x
Subtract the right side to put this in standard form.
x^2 +14x -32 = 0
(x +16)(x -2) = 0
x = -16 or 2
In order for DE to have a positive length, we must have x > 0. So ...
CD = x^2 = 2^2 = 4
DE = 12x = 12(2) = 24
CE = 32 -2x = 32 -2(2) = 28
