MATHEMATICS HIGH SCHOOL

Parker earns $4 in rewards for every $75 he spends at the grocery store. If he earned $44 in rewards last month. how much did he spend at the store

Answers

Answer 1
Answer:

he spent $825 at the store
Answer 2
Answer:

Answer:

825$

Step-by-step explanation:

you divide 44 by 4 that gets you 11 then multiply 11 times 75

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Which is an expression to find the speed in m/s? d = 100 m, t = 20 s

A. 100 - 20


B. 100 + 20


C. 100/20


D. 100 x 20

Answers

C. 100/20
 This is because the formula to finding speed is distance divided by time.

Answer:

100/20

Step-by-step explanation:

Y varies directly with X and has a constant rate of change of 6. When the value of Y is 11, then the value of X could be _____.equal to zero
less than 2
equal to 6
greater than 11

Answers

Answer:  The correct option is (B) less than 2.

Step-by-step explanation:  Given that Y varies directly with X and has a constant rate of change of 6.

We are to find the possible value of X when the value of Y is 11.

Since Y varies directly with X, so we can write

Y\propto X\n\n\Rightarrow Y=kx~~~~~~~~~~~~~~~(i),~~~~~~~~~\textup{[where 'k' is the constant of variation]}

Since the rate of change is constant and is equal to 6, so we must have

k=6.

So, from equation (i), we have

Y=kX\n\n\Rightarrow Y=6X~~~~~~~~~~~~~~~~~~~~~~(ii)

Now, when Y = 11, then from equation (ii), we get

Y=6X\n\n\Rightarrow 11=6X\n\n\Rightarrow X=(11)/(6)<(12)/(6)=2\n\n\n\Rightarrow X<2.

Thus, the value of X is less than 2 when Y = 11.

Option (B) is CORRECT.

Answer: The correct option is (B) less than 2.

Step-by-step explanation:  Given that Y varies directly with X and has a constant rate of change of 6.

We are to find the possible value of X when the value of Y is 11.

Since Y varies directly with X, so we can write

Since the rate of change is constant and is equal to 6, so we must have

So, from equation (i), we have

Now, when Y = 11, then from equation (ii), we get

Thus, the value of X is less than 2 when Y = 11.

Option (B) is CORRECT.

Step-by-step explanation:

Help me i have till midnight to get this done
4x+3xy+xy-x+3

Answers

Answer:

3x+4xy+3

Step-by-step explanation:

Simplify it: 4x+3xy+xy-x+3

5x+3xy+xy+3 subtract x

5x+4xy+3 add xy

Hope this helps plz mark brainliest if correct :D

Answer:

simplfiy: 4xy+3x+3

have a nice day and hope this answer helped!

(if you want step by step, you can comment)

Steven wants to buy a $495 bicycle. Steven has no money saved, but will be able to deposit $40 into a savings account when he receives his paycheck each Friday. However, before Steven can buy the bike, he must give his sister $65 that he owes her. For how many weeks will Steven need to deposit money into his savings account before he can pay back his sister and buy the bike?

Answers

$495 + $65 = $560

$560 / 40 = 14

He must save for 14 paychecks.

Answer:

He must save for 14 paychecks.

Step-by-step explanation:

$495 + $65 = $560

$560 / 40 = 14

He must save for 14 paychecks.

A proposed null hypothesis states that there is no difference in the population mean heights of two neighboring districts. The difference of the sample means is 10 cm, and the standard deviation of the difference of sample means is 6 cm. Which conclusion can we draw at the 68% confidence level?

Answers

Answer:

Explained

Step-by-step explanation:

Null hypothesis is something that states that there is no difference between the population means, while the alternative hypothesis states that there is difference between the two.

So, If the difference of the sample means is 10cm, and the standard deviation of the difference of sample means is 6 cm. Then  the population means of the two districts will be different according to the manual solution.

Answer:

The population means of the two districts are different.

Step-by-step explanation:

Data are drawn from a symmetric and bell shaped distribution with a mean of 120 and a standard deviation of 5. There are 900 observations in the data set. What percentage of observations are less than 130? How many observations are less than 130? This is suppose to be two different questions but they seem the same to me. Please please please help me.

Answers

How many requests an actual number, not a percent. To get the number from the percentage, assume you've got p% observations (which is 97.5%). The actual number of observations is p*900/100, that is 9 times the 97.5% or 877.5 observations (I know, odd thing you get a non-integer). I guess I got the wrong percentage (I don't do statistics just yet at school ;) )
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