All categories

3 years ago

Please help. This is a question on my final exam.

Mathematics

1 answer:

mel-nik [20]3 years ago

7 0

Answer:

Step-by-step explanation:

You might be interested in

HELLPPPPPP PLZ Thank you

uranmaximum [27]

Answer:

it is 25 words per minuet

Step-by-step explanation:

7 0

3 years ago

I need help,I need to use substitution but I don't know how

lions [1.4K]

If $y=x+6$ and $y=-2x-3$ , then you can replace $y$ in either equation with the equivalent expression given by the other equation. In this case, you have

$x+6=-2x-3$

and you can solve for $x$ .

$x+2x+6-6=-2x+2x-3+6\implies3x=3\implies\dfrac{3x}3=\dfrac33\impliesx=1$

Then $y=1+6=7$ .

For the second system, you can write

$5x-y=-5\implies 5x-5x-y=-5-5x\implies-y=-5-5x$

$\implies-(-y)=-(-5-5x)\implies y=5+5x$

Then substitute this into the second equation and you get

$3x-6(5+5x)=24\implies3x-30-30x=24\implies-27x-30+30=24+30$

$\implies-27x=54\implies x=2$

so that

$y=5+5(2)=15$

8 0

4 years ago

A new cars salesperson, sold an average of $23,797 per day for the first 4 days she worked. The next 4 days she worked, she sold

Paha777 [63]

She average 14623.75

5 0

3 years ago

What is 4613203.125 rounded as a whole number

ANTONII [103]

Answer:

4613203

Step-by-step explanation:

To round as a whole number, take the decimals and see what the first number of the decimal is. if the number is 5 or more, its 1 more number. if its lower than 5, its not a whole number.

3 0

3 years ago

Your quiz must include at least one word problem the requires multiplication or division of decimal by a power for ten. Example:

butalik [34]

Answer:

Total cost= $235

Step-by-step explanation:

Giving the following information:

Dontae wants to buy 100 tiles for his kitchen floor. The tiles cost $2.35.

To calculate the total cost, we need to use the following formula:

Total cost= 2.35*x

x= number of tiles

For 100 tiles:

Total cost= 2.35*100

Total cost= $235

5 0

3 years ago