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grin007 [14]
2 years ago
15

7x + 5 = 3x - 15solve for x​

Mathematics
2 answers:
jek_recluse [69]2 years ago
6 0

Answer:

7x+5=3x-15 x=-5

Step-by-step explanation:

Subtract from both sides

7x+5-5=3x-15-5

{Simplify}

7x=3x-20

{Subtract}{3x from both sides}

7x-3x=3x-20-3x

{Simplify}

4x=-20

Divide both sides by 4

4x over 4= -20 over 4

 {Simplify}  

  x=-5

Digiron [165]2 years ago
4 0

7x +5 = 3x -15

4x = -20

x = -5

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Find the 50th term sequence 5 , -2 , -9 , -16
Anni [7]
5 - 7 = - 2 ;
- 2 - 7 = - 9 ;
-9 - 7 = -16 ;
"common difference" d is - 7 ;
The n-th term of an arithmetic sequence is of the form <span>an = a1 + (n – 1)d ;
</span>a50 = 5 + 49 × ( - 7 ) = 5 - 343 = - 338;
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3 years ago
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What is the sum of the prime factors of 105 not including 1
Aleks04 [339]
15 is the answer because 5 is a prime factor so 5 into 105=21 and 3 is another prime factor so 3 into 21=7 and 7 is another so 7 into 7=1 and 5+3+7=15
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3 years ago
patsy can decorate 3 1/2 cupcakes in 1/4 hour at this rate how many cupcakes can patsy decorate in 1 hour
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Answer:

14 cupcakes per hour

Step-by-step explanation:3 1/2 or 3.5 times 4

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2 years ago
Linda saw an alligator in the zoo. Dylon told her he had seen an
lubasha [3.4K]

Answer:

9

Step-by-step explanation:

12-3=9

if dylon saw a 12 foot alligator that was 3 feet longer than the one linda saw to find out how long the alligator linda saw is, subtract the difference from the longer one12-3=9

8 0
2 years ago
An irrigation system (sprinkler) has a parabolic pattern. The height, in feet, of the spray of water is given by the equation ℎ(
maw [93]
  1. The irrigation system is positioned 9.5 feet above the ground to start.
  2. The spray reaches a maximum height of <u>84.5 feet</u> at a horizontal distance of <u>5 feet</u> away from the sprinkler head.
  3. The spray reaches all the way to the ground at about 10.87 feet away​

<h3>How to determine the position?</h3>

Since the height (feet) of the spray of water is given by this equation h(x) = -x² + 10x + 9.5, we can logically deduce that the irrigation system is positioned 9.5 feet above the ground to start.

<h3>How to determine the maximum height?</h3>

For any quadratic equation with a parabolic curve, the axis of symmetry is given by:

Xmax = -b/2a

Xmax = -10/2(-1)

Xmax = 5.

Thus, the maximum height on the vertical axis is given by:

h(x) = -x² + 10x + 9.5

h(5) = -(5)² + 10(5) + 9.5

h(5) = -25 + 50 + 9.5

h(5) = 34.5 feet.

Therefore, the spray reaches a maximum height of <u>84.5 feet</u> at a horizontal distance of <u>5 feet</u> away from the sprinkler head.

Also, the spray reaches all the way to the ground at about:

Maximum distance = √34.5 + 5

Maximum distance = 10.87 feet.

Read more on maximum height here: brainly.com/question/24288300

#SPJ1

<u>Complete Question:</u>

An irrigation system (sprinkler) has a parabolic pattern. The height, in feet, of the spray of water is given by the equation h(x) = -x² + 10x + 9.5, where x is the number of feet away from the sprinkler head (along the ground) the spray is.

1. The irrigation system is positioned____ feet above the ground to start.

2. The spray reaches a maximum height of ____feet at a horizontal distance of feet away from the sprinkler head.

3. The spray reaches all the way to the ground at about_____ feet away​

8 0
2 years ago
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