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ioda
3 years ago
11

4) Se a = 7, b = -3 e c =2, a equação do 2º grau que corresponde a esses coeficientes é: 2x(x+1) + 5x² - 5x = - 2 2x² + 7x - 5 =

0 3x² -7 = 0 4(x² + 7) - 3x - 7 = 0 Nenhuma das alternativas acima.
Mathematics
1 answer:
maxonik [38]3 years ago
3 0

Answer:

hiduddseir rut the. rwi. ei ej ei rfcua di

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PLEASE PLEASE PLEASE HELP ME YALL‼️‼️‼️‼️‼️
Inessa [10]

Answer:

Hi .. im happy to help

answer is 0.033

Step-by-step explanation:

P = C(4,4)÷C(10,4)

P = 1 ÷ 30

p =  \frac{1 }{30}

p = 0.033

3 0
3 years ago
You are purchasing four items and want to calculate the tax. The items cost $2.50, $8.75, $3.00, and $10.25. The tax rate is 6%.
Nastasia [14]

add 2.50+8.75+3.00+10.25=24.50

then

24.50*.06=$1.47

7 0
3 years ago
A factory employs skilled laborers at$25 per hour and unskilled laborers at $12 per hour. The total hourly cost of the factory’s
yarga [219]
For this case what you should do is the following system of equations:
 x: skilled laborers
 y: unskilled laborers
 By writing the system we have:
 x + y = 24
 25x + 12y = 405
 Solving the system:
 Step 1:
 -25x + -25y = -600
 25x + 12y = 405
 Step 2:
 -13y = -195
 y = 195/13
 y = 15
 step 3:
 x = 24-y
 x = 24-15
 x = 9
 Answer:
 skilled laborers = 9
 unskilled laborers = 15
6 0
4 years ago
What is 2 + 3<br> jjghh<br> jsj dewdkd kwdwmd dkd dkwd dwqk
navik [9.2K]

Answer:

5?

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Joe works mowing lawns and babysitting. He earns $9.10 an hour for mowing and $7.90 an hour for babysitting. How much will he ea
kirill115 [55]

Answer:

Joe would receive $9.10 for One hour of mowing the lawn and $39.50 for Five hours of babysitting, which (if needed) adds up to $48.60

Step-by-step explanation:

It's as simple as multiplication. Since he only mowed the lawn for one hour, it would only be $9.10. Since he babysat for 5 hours, you'd simply multiply $7.90 by five, giving you the answer $39.50

3 0
3 years ago
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