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Verizon [17]
3 years ago
5

What is f(–3) for the function f(a) = –2a2 – 5a + 4?

Mathematics
1 answer:
victus00 [196]3 years ago
7 0
The answer is 31 why? you replace the variable with -3
So it's f (a)=-2 (-3)(2)-5 (-3)+4
f (a)=31 that is the final answer.
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Fran has 7 sheets of paper for a coloring project. If she only uses 1/3 of a sheet of paper per drawing how many drawings can sh
notka56 [123]

Answer:

21 drawings

Step-by-step explanation:

So lets figure out how many drawings she can make per page. If she make a drawing using 1/3 of the page she can make 3 drawings per page. Now that we know she can make 3 drawings per padge, we can figure out how manyt drawings she can make by multiply the pages by drawings per padge. Let x be the drawings she can make.

7*3=x

Multiple 7*3

21=x

She can make 21 drawings

8 0
3 years ago
PLEASE HELP ME PLEASE
a_sh-v [17]

Answer:

20 bottles

Step-by-step explanation:

Number of bottles

=  5 \div  \frac{1}{4}   \\  \\  = 5 \times  \frac{4}{1}  \\  \\  = 20

3 0
2 years ago
Read 2 more answers
How do you solve 8/125 to get the decimal answer: 0.064?
Paha777 [63]
To get a fraction to a decimal, you divide the top number by the bottom number. So, in this case it would be 8 divided by 125. Gives you 0.064.
5 0
3 years ago
Read 2 more answers
Can anyone please help me with this.
geniusboy [140]

Answer:


Step-by-step explanation:

Givens

The triangle is equilateral.                         Given

<K = < M = 60                                             Property of an equilateral triangle.

IE = IE                                                           Reflexive property

Proof

  • <IEK = <IEM  = 90                                  Property of perpendicular
  • <EIK = 180 - 60 - 90                              All triangles have 180 degrees
  • <EIK = 30                                               Subtraction
  • <MIK = 180 - 60 - 90                             All triangles have 180 degrees
  • <MIK = 30                                              Subtraction
  • <MIE = <KIE                                           Both = 30 degrees
  • IE = IE                                                     Reflexive property
  • <IEK = <MEI                                            Both are right angles.
  • ΔMIK ≡ΔKIE                                            ASA
5 0
3 years ago
Read 2 more answers
A medical device company knows that 11% of patients experience injection-site reactions with the current needle. If 4 people rec
Orlov [11]

Answer:  0.6274

Step-by-step explanation:

Given: The proportion of patients experience injection-site reactions with the current needle : p=0.11

Sample size : n= 4

Let x be a binomial random variable that represents the people get an injection-site reaction.

Binomial probability formula: P(X=x)= ^nC_x p^x(1-p)^{n-x}

The required probability : P(x=0)

=\ ^4C_0(0.11)^0(1-0.11)^4\\\\=(1)(1)(0.89)^4\\\\=0.62742241\\\approx0.6274

Hence, the  probability that none of the 4 people get an injection-site reaction =  0.6274

6 0
3 years ago
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