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Elina [12.6K]
3 years ago
6

PLEASE HELP ILL GIVE BRAINEST if two ratios are equal they form a ____

Mathematics
1 answer:
Contact [7]3 years ago
7 0

Answer:

proportion

Step-by-step explanation:

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Quando existe, dizemos que a solução de um sistema de equações lineares é o conjunto ordenado de números que satisfaz todas as e
QveST [7]
X representa o numero das suas respostas certas.
y represnta o numero das suas respostas erradas.
O total de perguntas <span>é 25, portanto
x + y = 25

Agora tratamos do dinheiro.
Come</span>ça com <span>R$ 500,00
Pelas x respostas certas, recebe 200x.
Pelas y respostas errads perde 150y.
O total de dineheiro inicial mais os ganhos menos as perdas s</span>ão iguais a
R$ 600,00, portanto
500 + 200x - 150y = 600
200x - 150y = 100
20x - 15y = 10

Temos um sistema de duas equações com duas variaveis.

<span>x + y = 25</span>
20x - 15y = 10

      15x + 15y = 375
+    20x - 15y = 10
---------------------------
       35x         = 385
           x         = 11

x + y = 25

11 + y = 25

y = 14

Resposta: Errou 14 perguntas.


5 0
3 years ago
How to model using base 10 blocks to multiply 4x16
uysha [10]

Answer:

Step-by-step explanation:

64

3 0
3 years ago
HELP PLZ!!Which equations have exactly one y-value for any given x-value? Select all that apply.
lbvjy [14]

Answer:

The answer is A,C, and D

Step-by-step explanation:

3 0
3 years ago
How to evaluate 3H +2 for H equals 10
Free_Kalibri [48]

Answer: 32

Step-by-step explanation:

3H+2

3(10)+2

30+2

32

4 0
3 years ago
Which of the following is r2 + 4s evaluated for r = 4 and s = 1.5?
11Alexandr11 [23.1K]
So if you have r^2 + 4s and r=4 and s = 1.5 r^2 is 4^2 which is 16 and 4s is 1.5 x 4 which is 6 so you do 16 + 6 which is 22 so the correct answer is a.
8 0
3 years ago
Read 2 more answers
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