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Paul [167]
3 years ago
9

Number ten please thanks

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
5 0
-3^2= -(3)^2

The exponent of 2 only applies to the number 3. -(3)^2 should equal -9. This is true because according to the order of operations, exponents should be evaluated before multiplication. The negative sign here represents -1* 3^2.
If you want to find -3 to the power of 2 it must be written (-3)^2.
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There are 15 coins, which are nickels and dimes only, in Ediths purse. The total value of the coins in her purse is $1.15. If n=
Goshia [24]

Answer:

n=7 d=8

Step-by-step explanation:

n+d=15 d=15-n

0.05n+0.1(15-n)=1.15

0.05n-0.1n+1.5=1.15

-0.05n=-0.35

n=7 d=8

5 0
2 years ago
Plz help me with this
Marrrta [24]

Answer:  c) 3

<u>Step-by-step explanation:</u>

Plug in y = -9 and the given x-value to see if it makes a true statement.

a) -4.5 falls in the piecewise function x < -3  --> y = -x

y = -x

-9 = -(-4.5)

-9 = 4.5    FALSE

b) -3 falls in the piecewise function -3 ≤ x ≤ -2  --> y = 2x

y = 2x

-9 = 2(-3)

-9 = -6    FALSE

c) 3 falls in the piecewise function x > -2 --> y = -x²

y = -x²

-9 = -(-3)²

-9 = -9   TRUE

d) 9 falls in the piecewise function x > -2 --> y = -x²

y = -x²

-9 = -(9)²

-9 = -81   FALSE

4 0
3 years ago
In order to ride a rollercoaster at the theme park ridersust be 52inches tall write and graph an inequality to show the safe hei
n200080 [17]

Answer:

http://misterkmath.weebly.com/uploads/1/3/8/0/13802304/8-2d_answers.pdf

Step-by-step explanation: here is the answer sheet

7 0
2 years ago
What is the volume of a cylinder with r=3 and h=10
____ [38]

This is one of those questions where, if you know the formula, it's easy,
and of you don't know the formula, there's no way.

In fact, the whole purpose of the question is to help you remember the formula.

The volume of a cylinder is

                           (pi) x (the radius)² x (the height).

For this particular cylinder, that's

                            (pi) x (3)² x (10) =

                           (pi) x (9) x (10)  =  90 pi cubic units.

If you use (3.14) for (pi), then that's  <em>282.6 cubic units</em>.
 
4 0
3 years ago
colleen truman earns aa 4.5% commission on all sales. in june, her sales totaled $40,000. how much did she earn in commission?
prisoha [69]
She earned 1,800$ in commission. Total=40,000$ multiply by the percentage which is 4.5% = 0.045
40,000 x 0.045=1,800$
8 0
3 years ago
Read 2 more answers
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