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UNO [17]
3 years ago
8

THE FIRST ANSWER GETS BRAINLIEST AND 50 POINTS 9(x-5)+8(x+5)

Mathematics
2 answers:
julia-pushkina [17]3 years ago
8 0

Answer:

  • 17x - 5

Step-by-step explanation:

  • 9(x - 5) + 8(x + 5) =        open parenthesis
  • 9x - 45 + 8x + 40 =       collect like terms and simplify
  • 17x - 5
rusak2 [61]3 years ago
6 0

\\ \sf\longmapsto 9(x-5)+8(x+5)

\\ \sf\longmapsto 9x-45+8x+40

\\ \sf\longmapsto 9x-8x-45+40

\\ \sf\longmapsto x-5

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Qual é a posição relativa entre as retas y = 2x + 5 e y = -4x + 1
nadezda [96]
I think the answer is -3
6 0
3 years ago
If -7-4r=-15, what is the value of r/2 + 9
TEA [102]

Answer:

Step-by-step explanation:

Consider -7-4r=-15. Adding 7 on both sides of the equation,

-4r=-8 --- r = 2

Plug in value of r in r/2 + 9 = 2/2+9 = 1+9 = 10

6 0
2 years ago
I reallyy need help on this!<br> Thank you in advance
sattari [20]

Answer:828.96m^2

Step-by-step explanation:

radius(r)=8m

L=25m

π=3.14

total surface area of cone(tsa)=πxr^2+πxrxL

Tsa=3.14x8^2+3.14x8x25

Tsa=3.14x8x8+3.14x8x25

Tsa=200.96 + 628

Tsa=828.96

3 0
3 years ago
How it came to this
ryzh [129]
You were really close :D
The mistake you made is that 44 - 36 is 8, not 6.
Using 8 instead, the answer is:
3~\frac{8}{12}=3~\frac{3}{4},~or~3.75
4 0
3 years ago
Need help ASAP!! Write an informal proof to show triangles ABC and DEF are similar.
yaroslaw [1]

Answer:

Δ ABC and Δ DEF are similar because their corresponding sides are proportional

Step-by-step explanation:

Two triangles are similar if their corresponding sides are proportional which means the corresponding sides have equal ratios

In the two triangles ABC and DEF

∵ AB = 4 units

∵ DE = 2 units

∴ \frac{AB}{DE}=\frac{4}{2}=2

∵ BC = 6 units

∵ EF = 3 units

∴ \frac{BC}{EF}=\frac{6}{3}=2

∵ CA = 2 units

∵ FD = 1 units

∴ \frac{CA}{FD}=\frac{2}{1}=2

∴ \frac{AB}{DE}=\frac{BC}{EF}=\frac{CA}{FD}=2

∵ All the ratios of the corresponding sides are equal

∴ The corresponding sides of the two triangles are proportional

∴ Δ ABC is similar to Δ DEF

6 0
3 years ago
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