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miriamjb
09.01.2022 •
Mathematics
Es para antes de las 5
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Answers on questions: Mathematics
- M Mathematics Find the distance between the two points rounding to the nearest tenth (if necessary). (0,1) and (-5,4) 5.8 12 8.5 5...
- M Mathematics What is the value of 18 − 3k + 9 when k = 4? pls help!!...
- M Mathematics Sonya has four straws of different lengths: 2 cm, 8 cm, 14 cm, and 16 cm. How many triangles can she make using the straws? A one triangle B two triangles C no triangle D more...
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- M Mathematics Which inequality shows that -15 is to the left of -10 on a horizontal number line...
- M Mathematics Please help I’ve been stuck on it for a while now...
- M Mathematics Anybody know this ? I need help...
- M Mathematics Which is a valid proportion? 3 21 428 5 29 30 4 16 7- 49 글 3-12...
- M Mathematics If you have 2x - 4 list three input and their output values...
- M Mathematics In AUVW, the measure of ZW=90°, the measure of ZU=65°, and WU = 45 feet. Find the length of UV to the nearest tenth of a foot. 106.5 feet...
Ответ:
17) just take the root of 100. the text says its square(d).
10m
And checking it gives 10m * 10m = 100m²
18) you need to learn some square numbers to ace this topic. it isn't that complicated, just multiply natural numbers with themselves
like
1² = 1
2² = 4
3² = 9
4² = 16
5² = 25
6² = 36
7² = 49
8² = 64
Now we can see that a) sqrt(55) lies between 7 and 8, and that its value is somewhere in between
7 < a < 8
(ignoring the negative solution to the root oc)
try b, c and d yourself. if you struggle, leave a comment.
I got a problem finding exercises 19 to 21, seriously
22) well...
a * b = 18ft²
6ft * 3ft seems just right. pure guesswork here, seems to be to easy with these numbers.
but we can also write it as a system of two functions
a * b = 18ft²
a = 2b
and then solve it by substituting a in line one with 2b, since a is 2b this is allowed.
2b * b = 18
2 b² = 18
b² = 9
b = 3
(we ignore -3 as a solution bc negative length makes no sense)
plugging that b into line two of the system gives
a = 2 * 3
a = 6
27) rationale can we written as a ratio (a fration)
it almost sounds too simply
rationals are either the root of square numbers, bc they can be solved cleanly, or they got a repeating pattern after the point.
b and c apply to these rules, a and d not
30) lol, I just figured out where the missing exercises are hidden XD
31) just add up the three rectangles (easy part) with the two triangles top and bottom each triangle is just 12m * 16m / 2 (bc it's a triangle, not a rectangle). since you got two triangles you just multiply by two (it's like ignoring the decision. also, the two triangles together would indeed make just a n9ce rectangle).
if you really need the values, leave a comment, but that will not help you in any test.
you can also post your solutions and I'll check them.
32) area of the circle times two
plus area of a rectangle wrapped around the cylinder.
circle are is pi*r² -> pi * (28 in)²
(remember to double for two circles)
rectangle is the circumference of the circle (pi * 28in) times the height of the cylinder
like in 31), feel free two post your results or ask for values if you really struggle to grasp the pattern here.
hope you have a great day and that you understand some more of the topic. you can ace it :)