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In-s [12.5K]
3 years ago
8

Solve following equations. -2 (5+x) = -22

Mathematics
1 answer:
pashok25 [27]3 years ago
4 0
I believe your answer is x = 6.

Hope this helps!
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N divided by 2 - 6 = 8
dybincka [34]

Answer:

N=28 my friend

Step-by-step explanation:

7 0
3 years ago
If a sample of pure sodium has a mass of 8.2 grams and sodium has an average atomic mass of 22.99 g/mol, how many sodium atoms a
Nonamiya [84]
8.2 grams = 1 mol
Na ________
22.99 grams

First multiply the value of 8.2 to 1. Then divide by the value of 22.99 to determine the number of moles of sodium present in the 8.2 gram sample.

Then use the following equation to solve for sodium atoms.

Number of moles of Na • Avogadro Number = Number of sodium atoms.

0.3566782 • (6.02 X 10^23). = 2.1472 X 10 ^ 23. Or 2.15 X 10 ^ 23.

The answer is the second option - 2.15 X 10 ^ 23.
7 0
3 years ago
Given: △DMN, DM=10 3 m∠M=75°, m∠N=45° Find: Perimeter of △DMN
OlgaM077 [116]

Angle D is 180° -75° -45° = 60°. Drawing altitude MX to segment DN divides the triangle into ΔMDX, a 30°-60°-90° triangle, and ΔMNX, a 45°-45°-90° triangle. We know the side ratios of such triangles (shortest-to-longest) are ...

... 30-60-90: 1 : √3 : 2

... 45-45-90: 1 : 1 : √2

The long side of ΔMDX is 10√3, so the other two sides are

... MX = MD(√3/2) = 15

... DX = MD(1/2) = 5√3

The short side of ΔMNX is MX = 15, so the other two sides are

... NX = MX(1) = 15

... MN = MX(√2) = 15√2

Then the perimeter of ΔDMN is ...

... P = DM + MN + NX + XD

... P = 10√3 +15√2 + 15 + 5√3

... P = 15√3 +15√2 +15 . . . . perimeter of ΔDMN

5 0
3 years ago
3x3x3x11x11x__? = 16 335
kodGreya [7K]
Let the unknown number be y;

3×3×3×11×11×y = 16335;
3267×y = 16335;
y = 16335/3267;
y = 5;
5 0
3 years ago
Read 2 more answers
A software coder can type 79 words per minute. She works 5 eight hour days each week (not including
lions [1.4K]

Answer:

A. 189,600

Step-by-step explanation:

(79×60)×5=23700

23700×8=189600

8 0
3 years ago
Read 2 more answers
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