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Sedaia [141]
3 years ago
10

3x(5+4)=7 what dose that =

Mathematics
2 answers:
Pepsi [2]3 years ago
6 0

Answer:

x = -5/15

Step-by-step explanation:

hope this helps

Zigmanuir [339]3 years ago
5 0
The answer is x=-15/5
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Using the following relationship,
Aleks04 [339]
D. xb-a=y because it the close to being it it looks like
8 0
3 years ago
HELP FAST!!! PLZ I BEG YOU!! I'LL GIVE BRAINLYEST!!! 10 POINTS!!! PLZ!!!
MA_775_DIABLO [31]

Answer:

I think it is A

Step-by-step explanation:

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6 0
4 years ago
Read 2 more answers
ABC is a right angled triangle. All the measurements are in cm.
prohojiy [21]

Step-by-step explanation:

By Pythagoras' Theorem,

we have x² + (x + 2)² = (x + 4)².

=> 2x² + 4x + 4 = x² + 8x + 16

=> x² - 4x - 12 = 0

(The constants are a = -4, b = -12)

=> (x - 6)(x + 2) = 0

=> x = 6 or x = -2

The value x = -2 is rejected as side lengths cannot be negative.

Hence we have x = 6.

=> AB = 6cm, BC = 8cm, AC = 10cm.

P.S. What you see above is the full solution. You just need to type x² - 4x - 12 = 0 in the blank.

7 0
3 years ago
Plz help me thank you
lana [24]

√5.√8

=√40

√2×2×2×5

2√10

option A is correct

8 0
3 years ago
Read 2 more answers
Can someone please help me with this question?
Charra [1.4K]
So what I would do is first multiply the mean by 4 and that is the total u need, 146.5, to have a mean of 36 and 5/8. Next I add the lengths given, which is 110.625, and then I would subtract it from 146.5 which is 35.875 which is 35 and 7/8. You can also check the answer by finding the mean of the 4 numbers and determining if it comes out to 36 and 5/8. The answer is C. Hope this helps!
4 0
3 years ago
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