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Alex_Xolod [135]
2 years ago
14

CAN ANYBODY HELP ME WITH THIS? btw not really yelling

Mathematics
1 answer:
Alexeev081 [22]2 years ago
7 0
The area of the scale drawing will be:
600 square feet.
Step-by-step explanation:
The actual length of a wall in the room is 46 feet and the actual width of the room is 69 feet.
It is given that:
The scale factor of a room for a scale drawing is 2.3.
The length of the room according to the scale drawing will be:
46÷2.3=20 feet
and the width of the room according to scale drawing will be:
69÷2.3=30 feet
We know that the wall is in the shape of a rectangle.
This means that the area of scale drawing will be:
Length×Width
= 20×30
= 600 square feet.
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2 years ago
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(-3,2) 90 degrees about the origin clockwise
drek231 [11]
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8 0
3 years ago
Solve the inequality x^2-4x-7<0
ANEK [815]

Answer:

Inequality Form:

2 − √ 11 < x < 2 + √ 11

Interval Notation:

( 2 − √ 11 , 2 + √ 11 )

Step-by-step explanation:

Solve the inequality for  x  by finding  a ,  b , and  c  of the quadratic then applying the quadratic formula.

8 0
3 years ago
Solve the quadratic.<br><br><br> 4x^2+4-20=0<br><br><br><br><br> brainlist if you explain
frez [133]

Answer:

  • x = -1/2(1 +√21) ≈ -2.79129
  • x = -1/2(1 -√21) ≈ 1.79129

Step-by-step explanation:

We assume the middle term is supposed to be 4x.

We can remove a common factor of 4 to simplify this a bit.

  x^2 +x -5 = 0

This is of the form

  ax^2 +bx +c = 0

where a=1, b=1, c=-5.

__

The <em>quadratic formula</em> gives the solutions as ...

  x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

Filling in the given coefficients, we have ...

  x = (-1 ±√(1^2 -4·1·(-5)))/(2·1)

  x = (-1±√21)/2

The solutions are x = -1/2(1 +√21) and -1/2(1 -√21).

_____

<em>If what you wrote is what you intend</em>, then the equation simplifies to 4x^2 -16 = 0.

Dividing by 4 and factoring the difference of squares gives ...

  x^2 -4 = 0

  (x -2)(x +2) = 0

These factors are zero (hence their product is 0) for the values x = 2 and x = -2.

The solutions are x=2 and x=-2.

5 0
2 years ago
Rob Barros $15 from his father and then he borrows three dollars more drag numbers to write an equal using negative integers to
Vikentia [17]

Answer:

The amount of money in dollars that Rob owe his father is -$18

Step-by-step explanation:

From the given information:

Rob borrows $15 from his father and then he also borrows $3 more.

Thus, the amount he owes is father is now:

- $15  - $3 = - $18     Since we are using negative integers.

The amount of money in dollars that Rob owe his father is -$18

3 0
2 years ago
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