2 years ago

Find f(-1) given f(x) = –2x^3 + 3x^2 – 22

Mathematics

1 answer:

MArishka [77]2 years ago

6 0

$\\ \sf\longmapsto f(-1)$

$\\ \sf\longmapsto -2x^3+3x^2-22$

$\\ \sf\longmapsto -2(-1)^3+3(-1)^2-22$

$\\ \sf\longmapsto -2(-1)+3(1)-22$

$\\ \sf\longmapsto 2+3-22$

$\\ \sf\longmapsto 5-22$

$\\ \sf\longmapsto -17$

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What is the simplified value of the expression below?<br> -2.8+58

tatiyna

Answer:

55.2

Step-by-step explanation:

-2.8+58

=58-2.8=55.2

now we dont write -55.2 becuase we check which no. is greater . we take the sign of greatest no. so in this case it is 58

so ans=55.2

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3 years ago

Jackie is reading a 252 page novel for her summer reading project. On Monday she reads 4/8 of the novel. On Tuesday she reads 28

natima [27]

So far, Jackie has read 217 pages

In order to determine the total number of pages Jackie read, we would have to determine the number of pages she read each day and add these pages together

Number of pages she read on Monday = $\frac{4}{8}$ x 252 = 126 pages
Number of pages she read on Tuesday = 28 pages
Number of pages she read on Wednesday = $\frac{1}{4}$ x 252 = 63 pages