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atroni [7]
3 years ago
9

Prove that if AC=DF and AB=DE then BC=EF

Mathematics
1 answer:
Step2247 [10]3 years ago
8 0
In triangle ABC and DEF
AC =DF, [ given ]
AB =DE, [ given ]
angle A = angle D
by SAS
ABC congruent to triangle DFE
so
BC = EF, [ CPCTC]
hence proved
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Jonny has five Apples he gives four to Sarah how many apples do he have left ?
Korolek [52]

Answer:

He has one.

Step-by-step explanation:

He has five, and gives sarah four. That means that you take all but one away from 5. 5-4=1.

6 0
3 years ago
8(12+a) I'm Having trouble with this
KonstantinChe [14]

Answer:

8a+96

Step-by-step explanation:

8(12+a)

= 96+8a

5 0
3 years ago
Read 2 more answers
Check the consistency of 2x-3y=7 and x-2y+1=0
Furkat [3]

Answer:

x = 17, y = 9

or as an ordered pair, (17, 9).

The equations are consistent.

Step-by-step explanation:

2x - 3y = 7

x - 2y  = -1        Multiply this equation by -2:

-2x + 4y = 2     Add this to the first equation:

y = 9.

Plug y = 9 into the second equation:

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x = -1 + 18 = 17.

3 0
3 years ago
(x - 1)2 = 4<br> how do i do this
Gnoma [55]

Answer:

x = 3

Step-by-step explanation:

(x - 1)2 = 4

how to get this solved is very simple.

first step to apply is the BODMAS RULE

B..................... bracket

O..................... of

D.....................Division

M.................... multiplication

A..................... addition

S.................... Subtraction

so (x - 1)2 = 4

we have,

2x - 2 = 4 ( by opening the bracket)

collect the like terms

2x = 4+2

divide both sides by 2

2x/2 = 6/2

x = 3

to check if your answer is correct put the value of x = 3 into the question and see if the right hand side will equal to the left handside

(x - 1)2 = 4

(3-1)2=4

2(2)=4

4=4.............................. proved

8 0
3 years ago
What is the perimeter of DEFG, shown?
Murrr4er [49]

Answer:

C.34

Step-by-step explanation:

you find the length which is 10 squares and the width which is 7 squares. Since the shape is a quadrilateral you add all sides to find the perimeter= 2L+2W. 2(10)+2(7)=20+14=34

4 0
3 years ago
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