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alexira [117]
3 years ago
6

F(x) = -x^2 Find f(3)

Mathematics
1 answer:
Lemur [1.5K]3 years ago
5 0

Answer:

9

Step-by-step explanation:

f(x) = -x^2

f(3) = -3^2

f(3) = 9

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the sum of the digits of a two number is 14 .if 36 is substracted from the number,the places of the digits are reversed.find the
Taya2010 [7]
The number in the ones place= X
The number in the tenths place= y
y+x=14.
y=14-x

Original placement of numbers=10y+x
New placement of numbers(after subtraction of 36)= 10x+y

10y+ x-36=10x+y
Substitute y with 14-x
So we would get

10(14-x)+ x-36=10x+(14-x)
=140-10x+x-36=10x+14-x
After transposing we get
140-14-36=10x-x+10x-x
=90=18x
X=90/18
x=5

Y=14-x
=14-5
=9


So the two digit number is
10y+x
=90+5
=95
5 0
3 years ago
Evaluate the expression |x-10| when x= -8<br><br> a. -8<br> b. -18<br> c. 8<br> d. -18
nordsb [41]
|x-10| when x = -8
| - 8 - 10 | = |-18| = 18 <==
4 0
3 years ago
9​in the power of 3 is equal to 3in the power of M, What number is M?<br> Help​ me please~°~​
zhannawk [14.2K]

Answer:

6

Step-by-step explanation:

9 ^3 =3^m

(3^2) ^3 =3^m

3 ^(2×3)=3^m

3 ^6 =3 ^m

m =6

8 0
3 years ago
Read 2 more answers
Write the equation of a line that goes through point (0,-8) has a slope of 0
Deffense [45]

Answer:

y = x - 8

Step-by-step explanation:

In the equation for slope, y = mx + b,

your slope being 0 makes the equation 'x' or 0x but x is preffered.

Your why would be -8 because there is no x in the point and it is a negative number.

5 0
3 years ago
Read 2 more answers
The scale of a map is 1 in. = mi. Find each length on the map
WITCHER [35]

The question gives the relationship to be

1in=21mi

We will interpolate to solve the question.

First Question: 147 mi

\begin{gathered} \text{If 1 in = 21 mi} \\ x\text{ in = 147 mi} \end{gathered}

Cross multiplying,

undefined

7 0
1 year ago
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