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sleet_krkn [62]
3 years ago
6

Help me? answers por favor ?

Mathematics
2 answers:
goblinko [34]3 years ago
6 0
The answer to 21 is Never true because a supplementary angle always adds up to 180 degrees and obtuse angles are angles MORE than 90 degrees and 91 + 91 wouldn't make it supplementary.
dem82 [27]3 years ago
3 0
<span>Please, post only one question at a time.

The line passing through (1,4) and (-4,-1) has the following slope:

          -1 - 4          -5
m = ------------ = -------- = +1
          -4 - 1          -5

Find the slope of the line passing thru the other set of points.  Graph both lines.  What do you see?  Do the 2 lines have any particular relationship to one another?

</span>
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Point Eis on line segment DF. Given DE = 8 and EF= 2, determine the length<br> DF.
julia-pushkina [17]

Step-by-step explanation:

if that's what you mean

6 0
3 years ago
Mrs cousins works in a pool store and earns a 9.5% commission on every swimming pool she sells. how much commission did she earn
Dennis_Churaev [7]
She earned $532 for selling the pool
7 0
3 years ago
Four less than the product of ten and a number is eleven. is
nikitadnepr [17]

Answer:

If written in algebraic form it is, 10x - 4 = 11

Step-by-step explanation:

Four less ( minus 4 ) than the product of ten and a number ( 10 times x ) is eleven ( equal to 11 ).

Hopefully this helps!

Brainliest please?

3 0
3 years ago
Can someone please explain this
SSSSS [86.1K]

Answer:

-1

Step-by-step explanation:

can you also hep me on something

4 0
3 years ago
The ratio between the radius of the base and the height of the cylinder is 2:3.if its volume is 1617cm^3,the total surface area
zalisa [80]
The answer is 769.3 cm²

The volume of the cylinder is : V = π r² h
<span>The ratio between the radius of the base and the height of the cylinder is 2:3:
r/h = 2/3
h = 3/2r

V = 1617 cm
</span>π = 3.14

1617 = πr² * 3/2 r
1617 = πr³ * 3/2
1617 * 2/3 = πr³
1078 = πr³
r³ = 1078/π = 1078/3.14 = 343
r = ∛343 = 7 cm

h = 3/2r = 3/2 * 7 = 10.5 cm


The surface area of the cylinder is:
SA = 2πr² + 2πrh
      = 2 * 3.14 * 7² + 2 * 3.14 * 7 * 10.5
      = 307.72 + 461.58
      = 769.3 cm²
5 0
3 years ago
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