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3 years ago

8

A) 2x - (x - 3) = 5

1 answer:

Lana71 [14]3 years ago

6 0

Answer:

x=2

Step-by-step explanation:

2x-(x-3)=5

2x-x+3=5

x+3=5

-3 -3

x=2

Check:

2x-(x-3)=5

2(2)-(2-3)=5

2(2)-(-1)=5

4-(-1)=5

4+1=5

5=5

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Determine whether a triangle with the given vertices is a right triangle.

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A) right triangle
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3 years ago

Add or subtract. Write your answer in scientific notation. 6.4 x 10^3+ 1.4 x 10^4+ 7.5 x 10^3

ycow [4]

Answer:

2.79 * 10^4

Step-by-step explanation:

6.4 x 10^3+ 1.4 x 10^4+ 7.5 x 10^3

The exponents need to be the same

6.4 x 10^3+ 14 x 10^3+ 7.5 x 10^3

Add the numbers

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Multiply by the exponent

27.9 * 10 ^3

But this is not in scientific notation

Move the decimal one place to the left and add one to the exponent

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3 years ago

Please help . Really need done . Thank you . Will mark Brainly .

Gekata [30.6K]

Answer:

(5,2)

Step-by-step explanation:

Answer (5,2)

N(2)

W E(5)

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8 0

3 years ago

The ratio of an object's weight on Earth to its weight on Neptune is 5:7. How much would a person who weighs 150 pounds on Earth

jarptica [38.1K]

5/7 = 150 / ?

using cross product

5 * ? = 7 * 150

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Choice C

4 0

3 years ago

Read 2 more answers

20 Points + Brainliest for the answer and Explanation!!!

Vlad1618 [11]

Answer:

$P+Q=5x^2+4$

$Q-P=-x^2-4x+16$

Step-by-step explanation:

We are given

$P=3x^2+2x-6$

$Q=2x^2-2x+10$

Calculation of P+Q:

$P+Q=3x^2+2x-6+2x^2-2x+10$

now, we can combine like terms

$P+Q=3x^2+2x^2+2x-2x+10-6$

$P+Q=5x^2+0+4$

$P+Q=5x^2+4$

Calculation of Q-P:

$Q-P=2x^2-2x+10-(3x^2+2x-6)$

Firstly, we will distribute negative sign

$Q-P=2x^2-2x+10-3x^2-2x+6$

now, we can combine like terms

$Q-P=2x^2-3x^2-2x-2x+6+10$

$Q-P=-x^2-4x+16$

8 0

2 years ago