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serious [3.7K]
3 years ago
8

Is -3 a whole number

Mathematics
2 answers:
garik1379 [7]3 years ago
6 0

Answer:

No it is not -3 is an integers

ioda3 years ago
6 0

Answer:

no: -3 is an integer

Step-by-step explanation:

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What is 9x+1=7x-9? Help, please :) thanks.
dsp73
9x + 1 = 7x - 9
-7x. -7x
2x + 1 = -9
-1. -1
2x = -10
Divide by 2
x = -5
3 0
2 years ago
8.652<br> 10)<br> 1.2<br> Help please
icang [17]

Answer:

1.921

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?
VARVARA [1.3K]

Answer:

\displaystyle    - 155

Step-by-step explanation:

we are given a quadratic function

\displaystyle f(x) =  - 5 {x}^{2}  + 30x - 200

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

\displaystyle x _{ \rm  min} =  \frac{ - b}{2a}

the given function is in the standard form i.e

\displaystyle f(x) = a {x}^{2}  + bx + c

so we acquire:

  • b=30
  • a=-5

thus substitute:

\displaystyle x _{ \rm  min} =  \frac{ - 30}{2. - 5}

simplify multiplication:

\displaystyle x _{ \rm  min} =  \frac{ - 30}{ - 10}

simply division:

\displaystyle x _{ \rm  min} =  3

plug in the value of minimum x to the given function:

\displaystyle f (3)=  - 5 {(3)}^{2}  + 30.3 - 200

simplify square:

\displaystyle f (3)=  - 5 {(9)}^{}  + 30.3 - 200

simplify multiplication:

\displaystyle f (3)=  - 45  + 90- 200

simplify:

\displaystyle f (3)=   - 155

hence,

the minimum value of the function is -155

5 0
2 years ago
What's the hypothesis of a triangle ?
Mariana [72]
It is the slant side of the triangle its the longest side or in other words it forms a 90 degree angle the side thats going from top to bottom is you hypotenuse

6 0
2 years ago
Suppose you buy a DVD for 12.98. The sales tax is 7%. What is the total cost?
marissa [1.9K]
Rounded would be $13.89.
0.07 * 12.98 = 0.9086 and add that to 12.89 :)
5 0
2 years ago
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