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3 years ago

Help me please with this Simplify. 5a-12a

1 answer:

4 0

It helps to imagine the variable a sort of as a unit. Like with 5 minus 12 lemons, it has no bearings on the addition/subtraction here.

Factor out a and subtract.

$5a-12a \\ (5-12)a \\ \boxed{-7a}$

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WILL MARK BIANLEAST PLZ PLZ PLZ I REALLIY NEED THIS ASAP

Lina20 [59]

Answer: 120 beats per minute

Step-by-step explanation:

If you look at the plotted points on the graph, you can see that the rate is decreasing at a constant rate. As each week passes, the beats per minute rate drops by 10 beats. Therefore on Week 5, the heart rate will be 120 beats per minute.

4 0

3 years ago

You purchase a laptop for $399.99, a carrying case for $24.99 and some cleaner for $5.00. The sales tax rate on your purchase is

Lynna [10]

Answer:

$461.15

Step-by-step explanation:

Total amount of items:

Add all the prices together

399.99+24.99+5=429.98

Sales tax:

Convert 7.25% to a decimal

7.25/100=0.0725

Multiply the total by the decimal

429.98*0.0725=31.17355

Final cost:

Add the sales tax and total amount

429.98+31.17355=461.15355

Round to the nearest cent/hundreth

$461.15

Hope this helps! :)

6 0

3 years ago

7/8(−32−48x)+36=23(−33x−18)−10x <br><br> Please Help

Xelga [282]

I hope I can help! :)

Answer:

-422
-------
727

Have a great day/evening/night! :)
Let me know if you have any additional questions!
-Kappifilms

3 0

4 years ago

What is 7.39 rounded to the nearest whole number?

lutik1710 [3]

7 is the answer 4 and lower you round down 5 and up is up

5 0

3 years ago

Read 2 more answers

Solve by completing the square 9x^ - 18 x +93= -6

gavmur [86]

$9x^2 - 18 x + 93= -6$

take away 93 from both sides
$9x^2 - 18 x = - 99$

Divide by 9 through
$x^2 - 2 x = - 11$

Add (b/2)^2 to form perfect square
$x^2 - 2 x + ( \frac{2}{2} )^2 = - 11 + ( \frac{2}{2} )^2$

Form perfect square
$(x - 1)^2 = - 10$

Square root both sides to find x
$x - 1 = \pm \sqrt{-10}$

add 1 on both sides
$x = 1+ i\sqrt{10} \ or \ 1- i\sqrt{10}$

7 0

3 years ago