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Debora [2.8K]
4 years ago
15

If x= -2 what is the value of -5x + 8x/4 + 7

Mathematics
2 answers:
AVprozaik [17]4 years ago
6 0
-5(-2) + 8(-2) /4 + 7
10 - 16/4 + 7
10 - 4 + 7
13
Andrej [43]4 years ago
3 0

Answer:

13

Step-by-step explanation:

Hope This Helps!

Plz Mark Brainliest!

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How many window coverings are necessary to span 50 windows if each window covering is 15 windows long?
julia-pushkina [17]
<span><u><em>The correct answer is: </em></u>
4.

<u><em>Explanation</em></u><span><u><em>: </em></u>
To find this answer, we divide the number of windows, 50, by the length (in windows covered) of each covering, 15:
</span></span>\frac{50}{15} = 3 \frac{1}{3}<span><span>.
This means that 3 coverings won't quite be long enough, so we will need 4. </span></span>
4 0
3 years ago
A poll is given, showing 45% are in favor of a new building project.
katrin [286]

Answer:

The probability is 0.136125

Step-by-step explanation:

45% are in favor of the project, the probability of selecting someone in favor of the project will be 45/100 = 0.45

The probability of selecting someone not in favor of the project = 1 - probability of selecting someone in favor of project = 1-0.45 = 0.55

Now we have 3 people to be chosen at random with exactly one of them favoring the new building project. This means two of them will not favor the building project

Thus the probability here is = the probability of favoring * the probability of not favoring * the probability of not favoring

= 0.45 * 0.55 * 0.55 = 0.136125

4 0
3 years ago
G(x) = 2x – 4<br> h(x) = 3x - 3<br> Find g(h(-8)
igor_vitrenko [27]
-58 put in -8 for h(x) that equals -27 Put in -27 for g(x) that equals -58
6 0
3 years ago
George has a triangle-shaped garden in his backyard. He drew a model of this garden on a coordinate grid with vertices A(4, 2),
GarryVolchara [31]

The coordinates of triangle A′B′C′ is  A′(2, 1), B′(1, 2), C′(3, 2)

On plotting the coordinates on the graph, it is found :

Option A is the coordinates of a straight line.

Option C is the coordinates of a bigger triangle

Option D has a different shape.

Only option B fulfills the required condition of similar shape and scale factor of 0.5 .

Vertices of a triangular garden:

A(4,2)

B(2,4)

C(6,4)

Scale factor = 0.5

What are the coordinates?

  • A coordinate system in geometry is a system that uses one or more numbers, or coordinates, to determine the position of points or other geometric elements on a manifold such as Euclidean space.
  • Coordinates are numerical distances or angles that uniquely identify points on two-dimensional (2D) surfaces or in three-dimensional (3D) space ( 3D ). Mathematicians, scientists, and engineers use a variety of coordinate schemes.

Learn more about coordinates here: brainly.com/question/24513436

#SPJ1

6 0
2 years ago
Which expression is represented by the phrase "the square of y decreased by the quotient of 28 and 7"?
padilas [110]

Answer:

y^2-(28/7)

or, y^2-(4)

3 0
3 years ago
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