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bixtya [17]
3 years ago
8

Solve the system of equations by substitution. Show all work neatly on your work page. Checking your answer is wise. :) Plz need

Mathematics
1 answer:
Flauer [41]3 years ago
7 0

Answer:

x=5

Step-by-step explanation:

3x+2(-3x+11)=7

Use distributive property:

3x-6x+22=7

Combine like terms:

-3x+22=7

-3x=-15

Then divide:

-3x/3=-15/3 = 5

x=5

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Write a trinomial with 3x as the GCF of its terms.​
Sonja [21]

Answer:

3x (x² + x + 1)

You could write any trinomial like this

3 0
3 years ago
How do you answer a, b and c, answers and also how you worked it out
Kruka [31]

We can either convert to standard form first or convert to a common multiplier, kinda like a common denominator.  The latter makes more sense if they wanted the result in scientific notation, but let's do it that way anyway.

a)

4.5 × 10⁴ + 3.8  × 10³ = 45 × 10³ + 3.8  × 10³ = 48.8× 10³ = 48,800

Answer:  48,800

b)

4.5 × 10⁴ - 3.8  × 10³ = 45 × 10³ - 3.8  × 10³ = 41.2× 10³ = 41,200

Answer:  41,200

c)

7.2 × 10⁻³ + 6.3  × 10⁻² = 7.2 × 10⁻³ + 63  × 10⁻³ = 70.2 × 10⁻³

       = 7.02 × 10⁻² = 0.0702

Answer: 0.0702

4 0
3 years ago
The walls of a square storage room in a warehouse are 300 feet long. What is the distance from one corner to the other corner of
yulyashka [42]
Use Pythagoras theorem. (a^2 + b^2 = c^2)

300^2+300^2 = 180000
√180000 = 424.3

The answer is 424 foot.

Hope this helps.
3 0
3 years ago
What is the interquartile range (IQR) for the data set 14,15,17,19,20,23,26,30,32
natka813 [3]

Answer:

12 ??

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Solve 6x + c = k for x. A. 6(k-c) B. k+c/6 C. k-c/6 D. 6(k+c)
Likurg_2 [28]

Answer:

x=k/6-c/6

hope this helps

Step-by-step explanation:

5 0
3 years ago
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