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Natali5045456 [20]
3 years ago
5

Can someone help me with this question?

Mathematics
1 answer:
stiks02 [169]3 years ago
7 0

5x−2(x+1)=14 ​

distribute

5x -2x-2 =14

3x-2 = 14

add 2 to each side

3x = 16

divide by 3

x=16/3

Answer x=16/3 or 5 1/3

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Charra [1.4K]

Answer:  -418, 728, 446, -429, 1159, -696

Step-by-step explanation:

1. n = -199 - 219 = \boxed{-418}.

2. m = 438 - (-290) = 438 + 290 = \boxed{728}.

3. 128 - (-318) = 128 + 318 = \boxed{446}.

4. The sum of 429 and 429 is 429+429 = 858. We need to subtract this from 429, so 429 - 858 = \boxed{-429}.

5. The sum of 510 and 319 is 510+319 = 829. Subtracting -330, we get 829 - (-330) = 829 + 330 = \boxed{1159}.

6. Call the unknown number "\star". Then \star + 298 = -398, so \star = -398 - 298 = \boxed{-696}. (Think about it.)

4 0
2 years ago
10.44 is 14.4% of what number?
kipiarov [429]
The answer for that is .. 17?
3 0
3 years ago
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Metallic silver has a density of 10.50. what is the mass, in g, of a silver ingot that is 28.0 cm long, 4.90 cm wide, and 3.60 c
frozen [14]

Answer:

5190 g

Step-by-step explanation:

Calculate the volume:

28.0 cm × 4.90 cm × 3.60 cm = 493.92 cm³

Density is mass divided by volume:

D = M / V

Solving for mass:

M = D V

Substituting values:

M = (10.50 g/cm³) (493.92 cm³)

M = 5186.16 g

Rounding to three significant figures, the mass is 5190 g.

3 0
3 years ago
If a cube measures 5.3 cm on each side and has a mass of 280 grams how much is its volume​
OlgaM077 [116]

Answer:

8.1 g/cm

Step-by-step explanation:

3 0
3 years ago
Can someone please help me? i hope you can see this omg
Gemiola [76]

Step-by-step explanation:

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width = (x - 7) units

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Area = 2 ( 2x² -11x - 21)

Area = 4x² - 22x - 42

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3 years ago
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