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melisa1 [442]
3 years ago
9

What’s the value of X

Mathematics
2 answers:
lawyer [7]3 years ago
4 0

Answer:

10

Step-by-step explanation:

andrezito [222]3 years ago
4 0

Answer:

10

Step-by-step explanation:

The angles are vertically opposite , thus equal

5x = 7x - 20

2x = 20

x = 10

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6. How much heat is lost cooling 25 grams of water from 90°C to 45°C?
sergey [27]

Answer:

4,7025 (kJ).

Step-by-step explanation:

1) according to the condition: m=25 gr.; t₂=90; t₁=45; c=4.18 J/(g°C);

2) the formula of required heat is

Q=c*m*(t₂- t₁);

3) according to the formula of heat:

Q=4.18*25*45=4702.5 (J).

8 0
3 years ago
-x/3 = 2 x = -6 x = 6 x = -1
ikadub [295]

The question is -x/3 = 2 which is 1/3x=2

multiply both sides by 3, and you'll get x = 6

8 0
3 years ago
Identify the function shown in this graph
s2008m [1.1K]

Answer:

a

Step-by-step explanation:

rise/run and y-intercept

8 0
2 years ago
Read 2 more answers
I need answer now please 15 points<br>​
Alja [10]

Answer:

28

I'm not fully sure

Step-by-step explanation:

(m^2-5m+9)^2

9^2(9x2)= 18

m^2-5m+18

2x-5= 10( need to find a way to remove the m)

10+18=28

the way I solved it is confusing

4 0
3 years ago
Point P' is the image of P(-2,4) under a translation by 2 units to the left and 5 units down.
scZoUnD [109]

Answer:

(-4,-1)

X value: -2 - 2 = -4.

Y value: 4 - 5 = -1

8 0
3 years ago
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