If 4x + 5y =10 and x + 3y = 8, then (5x+8y)/3(A) 18
(B) 15
(C) 12
(D) 9
(E) 6

Answers

Answer 1

Answer: $\left \{{ \big{4x + 5y =10} \atop \big{x + 3y = 8}} \right.\n-----------\n4x+5y+x+3y=10+8\n5x+8y=18\n\n \frac{\big{ 5x+8y}}{\big{3}}=\frac{\big{ 18}}{\big{3}}=6\ \ \ \Rightarrow\ \ \ Ans.\ E$

Answer 2

Answer: $\left \{ {{4x + 5y =10} \atop {x + 3y = 8}} \right. \Rightarrow \n \n \left \{ {{4x + 5y =10} \atop {(-4)x + (-4).3y = (-4)8}} \right. \Rightarrow \n \n \left \{ {{4x + 5y =10} \atop {-4x -12y = -32}} \right. \Rightarrow \n \n \n 5y-12y=10-32 \Rightarrow \n \n -7y=-22\Rightarrow \n \n y= (22)/(7)$

$y= (22)/(7) \wedge x+3y=8\Rightarrow \n \n x+3.(22)/(7)=8\Rightarrow - (10)/(7)$

$(5x+8y)/(3) = \n \n (5(- (10)/(7))+8.(22)/(7))/(3) = \n \n ( -(50)/(7)+ (176)/(7))/(3)= \n \n ( (126)/(7))/(3) = (18)/(3)=6$

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What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?

Answers

Answer:

F(x) -4 shifts it down 4 units from f(x)

Step-by-step explanation:

When we add or subtract from f(x) this causes a shift in the vertical direction.

When we add it shifts it up.

When we subtract is shifts it down

F(x) -4 shifts it down 4 units

The two-way table shows the number of girls and boys who are right-handed or left-handed. What percent of left-handed people are girls? % Right-handed Left-handed Girls 8 2 Boys 9 2

Answers

______________________________
| | Right-handed | Left-handed|
|------------------------------------------------------|
|Girls | 8 | 2 |
|------------------------------------------------------|
|Boys | 9 | 2 |
|_____|_____________|__________|

What percent of left-handed people are girls?

There are a total of 4 left handed people, 2 of which are girls.

2/4 = 1/2 = 50%

50% of left-handed people are girls.

1x1x1x50x34x3x4x5x4x4x4x4x4x4x4x4x4x4x4x4x4x4x4x4

Answers

Answer:

4.3808666

Step-by-step explanation:

Answer:

7.009386627e15

Step-by-step explanation:

4h-2h+5=19 Solve for h

Answers

4h - 2h + 5 = 19

2h + 5 = 19 -> subtract 5 on both sides

2h = 14 -> divide by 2 on both sides

h = 7

Answer:

h=7

Step-by-step explanation:

4h-2h+5=19

2h+5=19

2h=19-5

2h=14

h=14/2

h=7

Suppose you have a wallet with $5 bills, $10 bills, and $20 bills. If the probability of picking a $20 bill is 4/15, and the probability of picking a $20 bill is 4/15, and the probability of picking a $5 bill is 1/3, what is the probability of picking a $20 bill?

Answers

The question does not make any sense. The probability of a 20 bill has already been given.

Given:
$5 bills
$10 bills
$20 bills

probability of $20 is 4/15
probability of $5 is 1/3

numerator is the number of events
denominator is the number of outcomes

the missing probability is of the $10 bill.

4/15 + 1/3 + x = 1 or 15/15

$5 bill = 1/3 x 5/5 = 5/15

15/15 - 4/15 - 5/15 = (15-4-5)/15 = (15-9)/15 = 6/15 = 2/5

the probability of $10 is 2/5

Answer:

The problem isn't copied out correctly. the first $20 should be $10

Step-by-step explanation:

two product are listed on sale this week. brand A is priced at $15.89 and brand B is priced at 17.37 how many is brand B than brand A