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-Dominant- [34]
4 years ago
14

What is the value of x in the equation −x = 6 − 3x + 8? −14 −7 14 7

Mathematics
1 answer:
krek1111 [17]4 years ago
3 0

Answer:

  x = 7

Step-by-step explanation:

Add 3x to both sides of the equation.

  2x = 6+8

Divide both sides by 2.

  x = 7

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the base length of a particular triangle is 4 inches mote than its height. it the area of the triangle is 10.5 square inches, fi
IRINA_888 [86]

Answer:

<u>Height = 3 inches and Base length = 7 inches</u>

Step-by-step explanation:

1. Information provided to answer the question correctly:

Base of the triangle = x+ 4

Height of the triangle = x

Area of the triangle = 10.5 inches²

2. Find the base length and height

Let's recall the formula of the area of a triangle:

Area = (Base * Height)/2

Replacing with the values we know:

10.5 = x (x + 4)/2

21 = x² + 4x

x² + 4x - 21 = 0

(x + 7) (x - 3) = 0

(x₁ + 7) = 0 ⇒ x₁ = -7

(x₂ - 3) = 0 ⇒ x₂ = 3

We take  x₂ as the answer because x₁ = -7 is not a valid height.

<u>Height = 3 inches and Base length = 7 inches</u>

3 0
4 years ago
Ms. Alonzo ordered 5,000 markers for her store. Only
viva [34]

Answer:

500

Step-by-step explanation:

1/10 of 5000 is 500.

500 x 10 = 5000

8 0
3 years ago
Mako runs 10 miles in 2 hours. If he continues at this rate, how many miles
Vesnalui [34]

Answer:

Answer: 25 miles

Step-by-step explanation:

Explanation: He will run 5 hours= 5x5=25

3 0
3 years ago
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Simplify 2x-(-3x+9). 5x-9 –x-9 x+9
vampirchik [111]

Answer:

5x - 9

Step-by-step explanation:

2x -(-3x + 9)                

2x + 3x - 9)                  DISTRIBUTE -1

5x - 9                           COMBINE LIKE TERMS

8 0
3 years ago
Evaluate 26 +2⁶<br><br>A) 52<br><br><br>B)90<br><br>C)128<br><br>D) 481,890,304​
seraphim [82]

Answer:

the answer is B

Step-by-step explanation:

2^6=64

64+26=90

6 0
3 years ago
Read 2 more answers
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