OK. <u>2 = -t² + 4t + 5</u>
Subtract 2 from each side: 0 = -t² + 4t + 3
Multiply the right side by -1 : 0 = t² - 4t - 3
Unfortunately, this can't be factored. The only other way I know
to find the solutions to a quadratic equation is with the use of the
quadratic formula. When you do that, you get these solutions:
t = 2 + √7 = about<em> 4.65</em>
and
t = 2 - √7 = about <em>-0.65</em> .
If this equation comes from a problem that involves real people throwing
real things into the air and making vertical motion, then you want only the
positive solution.
Complete question :
the original blueprint of a concrete patio has a scale of 2 inches=3 feet. victoria wants to make a new blueprint of the patio with a length of 16.8 inches. original blueprints length is 14 inches and original blueprints width is 12 inches. what is the scale for the new blueprint and what is the width of the blueprint with the new scale?
Answer:
2.5 fts, 14.4 fts
Step-by-step explanation:
Given that:
Scale of original blueprint : 2inches = 3 feets
To make a new blueprint with a length of 16.8 inches, the scale for the new blueprint will be :
Original scale : 2 inches = 3 feets
Original blueprint length = 14 inches
Then,
2 inches = 3 feets
14 inches = d
Cross multiply :
2d = 42
d = 21 feets
Hence, new scale for blueprint :
16.8 inches = 21 feets
2 inches = d
16.8d = 42
d = 2. 5 feets
For the width :
14 inches = 16.8 feets
12 inches = w
14w = 201.6
w = 201.6/14
Width = 14.4feets
Answer:
-1.25
Step-by-step explanation:
(3,8) (7,3)
(8-3)/(3-7)= 5/-4= -1.23
FYI: watch some videos on Khan academy on finding slope
Answer:
I KNOW FOR SURE
Step-by-step explanation:
if that's all the question is then I definitely know the answer ;)
if you forgot to write the rest then hmu haha
