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Natasha2012 [34]
3 years ago
6

What is the value, to the nearest tenth, of 15 x 3 - 12 x 2 when x = 2.5​

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
4 0

Answer:

159.4

Step-by-step explanation:

I'm assuming that it's supposed to be 15x^3-12x^2 because when you copy and paste the "^" gets cut out

15*2.5^3 - 12*2.5^2 = 234.375 - 75 = 159.375

rounded is 159.4

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Nikitich [7]
6:3 boys to girls.
say for the sake of it, there are 60 boys and 30 girls.that makes 90 children.if 1/2 of the boys wore hats, then 30 boys wore hatsif 1/3 of the girls wore hats, then 10 girls wore hatsif 30 boys and 10 girls wore hats, then 40 children wore hatsif 40 children wore hats, then 40/90 children wore hats40/90 can be simplified to 4/94/9 children wore hats

5 0
4 years ago
Y= -3x^2-24x-46 write in vertex form
mario62 [17]

ANSWER

y= -3{(x + 4)}^{2}  + 2

EXPLANATION

The given function is:

y= -3x^2-24x-46

Factor -3 for the first 2 terms.

y= -3(x^2 + 8x)-46

We add and subtract the square of the coefficient of x.

y= -3(x^2 + 8x +  {(4)}^{2} )  - - 3( {4)}^{2} -46

Factor the perfect square trinomial.

y= -3 {(x + 4)}^{2} )  + 48 -46

The vertex form is:

y= -3{(x + 4)}^{2}  + 2

6 0
4 years ago
If f(x) = 3x2 + 1 and g(x) = 1 – x, what is the value of (f – g)(2)?
hjlf
Hello,

(f-g)(x)=3x²+1-1+x=3x²+x
(f-g)(2)=3*2²+2=3*4+2=14


7 0
4 years ago
Read 2 more answers
Fiona, an avid food blogger posted a total 216 recipes in 36 weeks. If she posted them at a constant rate, how many recipes did
Cloud [144]

Answer:

90

Step-by-step explanation:

216/36= 6

6 times 15=90

Hope this helped

:)

5 0
3 years ago
Read 2 more answers
Which is NOT a multiple of 15?<br><br> A) 45 <br> B) 60 <br> C) 90 <br> D) 115
fgiga [73]

Answer:

115

Step-by-step explanation:

115 cannot go into 15 evenly. The closest you can get is 7.

5 0
3 years ago
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