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Natalija [7]
3 years ago
7

Help!

Mathematics
2 answers:
REY [17]3 years ago
6 0

Answer:

0.79 yw hop ethis helped.

Step-by-step explanation:

padilas [110]3 years ago
5 0

Answer:

0.390

Step-by-step explanation:

0.79×0.79×0.79×0.79

= 0.38950081

= 0.390

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| 15x + 5y = 20<br> 1 - 3x = y + 6
Zina [86]

Answer:

There isn’t a solution to this when using substitution or elimination.

Step-by-step explanation:

4 0
3 years ago
In ΔABC (m∠C = 90°), the points D and E are the points where the angle bisectors of ∠A and ∠B intersect respectively sides BC an
Airida [17]

This is a little long, but it gets you there.

  1. ΔEBH ≅ ΔEBC . . . . HA theorem
  2. EH ≅ EC . . . . . . . . . CPCTC
  3. ∠ECH ≅ ∠EHC . . . base angles of isosceles ΔEHC
  4. ΔAHE ~ ΔDGB ~ ΔACB . . . . AA similarity
  5. ∠AEH ≅ ∠ABC . . . corresponding angles of similar triangle
  6. ∠AEH = ∠ECH + ∠EHC = 2∠ECH . . . external angle is equal to the sum of opposite internal angles (of ΔECH)
  7. ΔDAC ≅ ΔDAG . . . HA theorem
  8. DC ≅ DG . . . . . . . . . CPCTC
  9. ∠DCG ≅ ∠DGC . . . base angles of isosceles ΔDGC
  10. ∠BDG ≅ ∠BAC . . . .corresponding angles of similar triangles
  11. ∠BDG = ∠DCG + ∠DGC = 2∠DCG . . . external angle is equal to the sum of opposite internal angles (of ΔDCG)
  12. ∠BAC + ∠ACB + ∠ABC = 180° . . . . sum of angles of a triangle
  13. (∠BAC)/2 + (∠ACB)/2 + (∠ABC)/2 = 90° . . . . division property of equality (divide equation of 12 by 2)
  14. ∠DCG + 45° + ∠ECH = 90° . . . . substitute (∠BAC)/2 = (∠BDG)/2 = ∠DCG (from 10 and 11); substitute (∠ABC)/2 = (∠AEH)/2 = ∠ECH (from 5 and 6)
  15. This equation represents the sum of angles at point C: ∠DCG + ∠HCG + ∠ECH = 90°, ∴ ∠HCG = 45° . . . . subtraction property of equality, transitive property of equality. (Subtract ∠DCG+∠ECH from both equations (14 and 15).)
5 0
3 years ago
What is an equivalent expression for 3a + 5 ?​
Georgia [21]

Answer:

Equivalent  expression:

6a + 10

or

9a + 15

6 0
3 years ago
Rusty is training for a triathlon. He
USPshnik [31]

Answer:

207 miles

Step-by-step explanation:

92/4

9•23

6 0
3 years ago
I need to know how to do this math problem
ladessa [460]

figure it out yourself

5 0
3 years ago
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