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harkovskaia [24]
3 years ago
12

HELP PLEASEEE 9th Grade Geometry

Mathematics
1 answer:
Shtirlitz [24]3 years ago
6 0

Step-by-step explanation:

AD ≅ BC, Given

∠BCD ≅ ∠ADC, Given

CD ≅ CD, Reflexive property

ΔBCD ≅ ΔADC, SAS congruence

∠BDC ≅ ∠ACD, CPCTC

ΔECD is an isosceles triangle, definition of isosceles

DE ≅ CE, properties of isosceles triangles

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5 lb. 10 oz. − 3 lb. 1 oz. = lb. oz.
Darina [25.2K]

Answer:

2 lbs  9 oz

Step-by-step explanation:

Lets line up the ounces and pounds and subtract

  5 lb. 10 oz.

− 3 lb. 1 oz.

------------------------

2 lbs  9 oz


3 0
3 years ago
Read 2 more answers
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Step-by-step explanation:

6 0
2 years ago
Joel needs to buy some blank DVDS and zip disks to back up a large amount of data that has been generated by an accounting firm.
wlad13 [49]

Answer:

D = 4, Z = 24

Step-by-step explanation:

6D+3Z = 96

5D+4Z = 116

multiply top by 5 and bottom by -6

top equation = 30D+15Z = 480

bottom equation = -30D-24Z = -696

Cancel 30D and -30 D

top equation  = 15Z = 480

Bottom equation = -24Z = -696

15Z - 24 Z = 480 - 696

-9Z = 216

Z = 216/9

Z = 24

Now that we have the value of Z, we can substitute it in any equation to find D

6D + 3(24) = 96

6D + 72 = 96

6D = 96 - 72

6D = 24

D = 24/6

D = 4

4 0
3 years ago
What is 100 + 4200 + 50 rounded to the nearest ten thousand
Finger [1]
100+4200 is 4,300 4,300+50 is 4,350 if you rounded that to the nearest 10,000 it's 10,000 Explain cause I think you're missing something from the question
4 0
3 years ago
Wha is 5÷312 in long division
bezimeni [28]

The answer is 62 with a remainder of 2.


Hope this helps!





5 0
3 years ago
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