Andy is one-fourth as old as his grandfather, who is 76 years old. Write an equation to determine whether Andy is 19 or 22 years old.

Answers

Answer 1

Answer: We know that if we multiply Andy's age by four we obtain 76. Lets assume that Andy's age its x. so
4*x=76
Now we have to solve equation
4*x=76 /:4 divide both sides by 4
x=19 - its the answer

Answer 2

Answer: A=Andy
G=Andy's Grandfather

A*4=G
G=76
A*4=76
/4
a=19

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What is (1.6x + 7.3) + (–0.6x + 2) – (7.8 – 3.4x), simplified?(1.6x + 7.3) + (–0.6x + 2) – (7.8 – 3.4x)

1.6x + 7.3 – 0.6x + 2 – 7.8 + 3.4x

1.6x – 0.6x + 3.4x + 7.3 + 2 – 7.8

Answers

Answer:

$4.4x + 1.5$

Step-by-step explanation:

$(1.6x + 7.3) + (-0.6x + 2) - (7.8 -3.4x)$

To simplify this we use order of operation PEMDAS

WE start with removing the parenthesis and then we combine like terms

Multiply negative sign inside the third parenthesis

$1.6x + 7.3-0.6x + 2-7.8 +3.4x$

Now we combine like terms

$1.6x-0.6x+3.4x=4.4x$

$7.3+ 2-7.8=1.5$

so simplified expression is $4.4x + 1.5$

(1.6x + 7.3) + (–0.6x + 2) – (7.8 – 3.4x)
1.6x + 7.3 – 0.6x + 2 – 7.8 + 3.4x
1.6x – 0.6x + 3.4x + 7.3 + 2 – 7.8
4.4x + 1.5
thats all I guess

What is the inquality

Answers

Answer:

Step-by-step explanation:

Equations and inequalities are both mathematical sentences formed by relating two expressions to each other. In an equation, the two expressions are deemed equal which is shown by the symbol =. ... An equation or an inequality that contains at least one variable is called an open sentence.

An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value. a ≠ b says that a is not equal to b. a < b says that a is less than b. a > b says that a is greater than b. (those two are known as strict inequality)

Difference in size,degree,circumstances etc lack of equality.

How much will you save per lb, by buying the least expensive? Round to the nearest cent. 2.5 lbs for $8.75 or 3 pounds for $9.75.

Answers

Answer:

$0.25 per pound.

Step-by-step explanation:

Let us find unit rate for both quantities.

$\text{Price per pound}=\frac{8.75\text{ dollars}}{2.5\text{ pound}}$

$\text{Price per pound}=3.5\frac{\text{ dollars}}{\text{ pound}}$

Therefore, cost of per pound for first given rate is $3.5.

Now let us find unit rate for second quantity.

$\text{Price per pound}=\frac{9.75\text{ dollars}}{3\text{ pound}}$

$\text{Price per pound}=3.25\frac{\text{ dollars}}{\text{ pound}}$

We can see that price for second quantity is less than 1st. To find the savings per pound we will subtract 3.25 from 3.5.

$\text{Savings per pound}=3.50-3.25$

$\text{Savings per pound}=0.25$

Therefore, we will save $0.25 per pound by buying the least expensive.

Answer:

0.25

Step-by-step explanation:

If 3t-7=5t, then 6t=?

Answers

$3t-7=5t\n\n5t=3t-7\ \ \ \ /-3t\n\n5t-3t=3t-3t-7\n\n2t=-7\ \ \ \ /\cdot3\n\n2t\cdot3=-7\cdot3\n\n6t=-21$

$3t-7=5t\n 2t=-7\n 6t=-21$

Solve the system of equations.What is x and y

−2x+15y=−24
2x+9y=24

Answers

−2x+15y=−24

2x+9y=24

Add the two equations together.

-2x +2x = 0

15y + 9y = 24y

-24+24 = 0

The two equations when added become:

24y = 0

Solve for y:

divide both sides by 24:

y = 0/24 = 0

The value of Y is 0

Now replace Y in one of the equations and solve for x:

2x+9(0) = 24

2x + 0 = 24

2x = 24

Divide both sides by 2:

x = 24/2

x = 12.

The value of x is 12

The solution is (12,0)

Answer:

The solution is ( x , y ) = ( 12 , 0 )

Step-by-step explanation:

[ Refer to the attachment ]

A share of stock in the bree medical supply company is quoted at 35 1/4,suppose you hold 20 shares of that stock which you bought at 31 1/2 if you sold that stock at 35 1/2,which of the following would be true?A. you suffered a loss of $75.00
B. you made a profit of $705.00
C. you made a profit of $75.00
D. you suffered a loss of $630.00

Answers

Hi there, we know the total number of stocks bough is 20, the rate was 31 1/2=63/2, 20*63/2=10*63=630 dollars, the rate they were sold is 35 1/4=141/4 dollars, 5*141=705 dollars, the amount of profit is 20 stocks. So, 705-630=75 dollars. So, the answer is C. You made a profit of $75.00

the answer will be c

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