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scZoUnD [109]
3 years ago
7

PLEASE HELP ME PLEaSE

Mathematics
2 answers:
Annette [7]3 years ago
8 0

Answer: 15x-6y-7

Step-by-step explanation:

3*5x

3*2y

15x-6y-7

FromTheMoon [43]3 years ago
5 0

Answer:

15x-6y-7

Step-by-step explanation:

3(5x-2y)-7

(3*5)x = 15x

(3*-2)y = -6y

-7 = -7

15x-6y-7

Hope this helps. Have a nice day. May it be filled with joy and happiness. Please, be safe and wash your hands. Happy Holidays.

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Extra points!!no links tho
Naddik [55]

Answer:

<h3>              a. the  vertex represents a minimum point</h3><h3>              b.  f(x) = (x + 5)² - 5</h3>

Step-by-step explanation:

a.

a = 1 > 0  ← that means the parabola opens up, so the vertex is minimum of the function

b.

  f(x)=x^2+10x+20\\\\f(x)=\underline{x^2+10x+25} - 25+20\\\\f(x)=(x+5)^2-5

5 0
3 years ago
What happens to the function f(x)=x4 when it becomes f′(x)=x4+5?
elena-s [515]
I think it moves 5 units to the right Im not sure tho!!
8 0
2 years ago
A bag of nuts weighs 3 ounces and costs 50 cents. What is the unit price? Round to the nearest cent.
galina1969 [7]

Answer:

50 cents/3 ounces = 16.67 cents/ounce

Step-by-step explanation:

maybe

8 0
2 years ago
Read 2 more answers
Justin is a teacher and takes home 76 papers to grade over the weekend. He can grade at a rate of 7 papers per hour. How many pa
allochka39001 [22]

Answer:

7.6

Step-by-step explanation:

I know math!!!!!!!!!!

3 0
3 years ago
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
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