MATHEMATICS HIGH SCHOOL

A delivery driver earns $221 for 17 hours of work. Assuming he is paid by the hour, how much will he earn in 12 hours?

Answers

Answer 1

Answer:

Answer:

156

Step-by-step explanation:

221/17=13

13*12=156

Answer 2

Answer:

Answer:

$156

Step-by-step explanation:

221/17=x/12

221*12=17x

2652=17x

156=x

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at a concession, stand seven hotdogs and two hamburgers cost $12.75; two hot dogs and seven burgers cost $16.50. find the cost of one hot dog and one burger.
In this parallelogram, the measure of angle b exceeds the measure of angle a by 30 What is the measure of angle c
Please Answer ASAP Math Question
Can someone please just tell me if I did this right? It’s the volume of a cone.

Find the area of the polygon with the given vertices A (-6,1), B (4,1), C (4,-8), D (-6,-8)

Answers

Answer:

Step-by-step explanation:

Suppose there is an excess demand for cell phones. In a market without price controls, market pressures will cause the price of cell phones to _____ until it reaches the equilibrium price. decrease increase stay the same

Answers

When there is heavy demand, sellers always take advantage of the opportunity to skin, fleece, and screw the buyers, by INCREASING the price. "Equilibrium" is reached wgen the buyers say "Enough ! I'm not paying that price no matter how desperately I want to have it."

Answer:

increase

Step-by-step explanation: I hope im right

2x-3y=-143x-2y=-6
if (x,y) is a solution to the system of equations above, what is the value of x-y?
A)-20
B)-8
C)-4
D)8
can you show your work please

Answers

Answer:

Step-by-step explanation:

The given system of equations :

$2x-3y=-14.............................(1)\n3x-2y=-6.........................(2)$

Multiply equation (1) with 3 and equation (2) with 2 , we get

$6x-9y=-42.............................(3)\n6x-4y=-12.........................(4)$

Now subtract equation (4) from equation (3), we get

$5y=30\n\n\Rightarrow\ y=6$

Substitute the value of y in equation (1), we get

$2x-3(6)=-14\n\n\Rightarrow\ 2x=-14+18\n\n\Rightarrwo\ 2x=4\n\n\Rightarrow\ x=2$

Hence, the solution of the system : (x,y)=(2,6)

Now, consider $x-y$ and substitute the value of x and y , we get

$2-6=-4$

The solution to the equation is x - y = -4

Given data ,

To solve the system of equations, we can use the method of substitution or elimination. Let's use the method of elimination:

Multiply the first equation by 3 and the second equation by 2 to make the coefficients of x in both equations equal:

(3)(2x-3y) = (3)(-14)

(2)(3x-2y) = (2)(-6)

Simplifying these equations gives:

6x-9y = -42

6x-4y = -12

Now, subtract the second equation from the first equation:

(6x-9y) - (6x-4y) = (-42) - (-12)

-5y = -30

Divide both sides by -5:

y = 6

Substitute this value of y back into one of the original equations, let's use the first equation:

2x - 3(6) = -14

2x - 18 = -14

2x = 4

x = 2

Now , the value of x - y is given by

A = x - y

A = 2 - 6

A = -4

Hence , the equation is solved

To learn more about equations click :

brainly.com/question/19297665

#SPJ6

Help please!!
Solve for X.

Answers

9514 1404 393

Answer:

3) x = 9

4) x = 3

Step-by-step explanation:

3) The two short segments are indicated as having a sum equal to the long segment.

(x +2) +(-5 +x) = 15

2x = 18 . . . . . . . . . . . . add 3

x = 9 . . . . . . . . . divide by 2

(This makes the segments be 9+2 = 11 and -5+9 = 4, which total 15.)

4) Same deal.

3x +3 = 4x

3 = x . . . . . . . . subtract 3x

(This makes the segments be 3(3) = 9 and 4(3) = 12, where 9+3=12.)

Which of the following methods is used when one group of subjects is measured on only two separate occasions? a. chi square b. t test for two dependent groups c. one-way ANOVA d. t test for two independent groups

Answers

Answer:

Step-by-step explanation:

Kayla currently has an account balance of $2,134.96. She opened the account 12 years ago with a deposit of $1,327.35. If the interest compounds twice a month, what is the interest rate on the account?

Answers

Answer:

Interest rate is 1.728%

Step-by-step explanation:

Here, we are interested in calculating the monthly interest rate on an account.

Mathematically;

The compound interest formula amount is given as;

A = P( 1 + r/n)^nt

where A is the amount at the end of the compounding = $2,134.96

P is the principal which is the amount deposited = $1,327.35

r is the rate which we want to calculate

n is the number of times per year it is compounded = (2 * 12) = 24 ( twice monthly)

t is the number of years = 12

2,134.96 = 1327.35( 1 + r/24)^(24 * 12)

divide both sides by 1327.35

1.608 = (1 + r/24)^288

Take the ln of both sides

ln 1.608 = ln ( 1 + r/24)^288

ln 1.608 = 288 ln (1 + r/24)

0.21 = 288 ln ( 1 + r/24)

Divide both sides by 288

0.00072 = ln (1 + r/24)

1.000716527571 = 1 + r/24

r/24 = 0.00072

r = 24 * 0.00072

r = 0.01728

which is same as 1.728%

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