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HACTEHA [7]
3 years ago
13

Please help!! Will get brainliest! Zoom if can’t see. Correct answer only!!

Mathematics
1 answer:
8090 [49]3 years ago
7 0
Domain = Set of all real numbers, which is choice B
Range = Choice C) y \le 3

The domain is the set of allowed x value inputs of a function. In this case, we can plug in any x value we want. The graph stretches forever in both directions along the x axis. This is shown by the arrows.So that's why the domain is the set of all real numbers.

The range is the set of outputs of a function. It is the set of possible y values. As you can see on the graph, the highest point is at (-1,3) which is the vertex.
The largest y value possible is y = 3. Any other y value smaller than this is possible. So the range is therefore y \le 3 where y is a real number


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Find m∠1. Then classify the triangle by its angles
omeli [17]

9514 1404 393

Answer:

  • ∠1 = 60°
  • equilateral triangle

Step-by-step explanation:

The sum of angles in a triangle is 180°, so we have ...

  60° +60° +∠1 = 180°

  ∠1 = 180° -120° = 60°

The measure of angle 1 is 60°.

All of the angles are the same, so this is an equiangular triangle, better known as an equilateral triangle.

3 0
3 years ago
The net of a rectangular prism is shown below.
Mamont248 [21]

Answer:

28

Step-by-step explanation:

Using a net to find the surface area of a rectangular prism

Finding the areas of each of the rectangles and squares of the net of a rectangular prism and adding up those areas gives the surface area or total surface area of the prism.

For example, if the length of one side of the cube 4 units then the area of one its face is 4 × 4 = 16 square units. From the net, we can see that there are six equal faces and so we get the total surface area is 6 × 16 = 96 square units.

Surface Area of a Rectangular Prism using Nets

A rectangular prism or cuboid is formed by folding a net as shown −

Cuboid

We can see from the net that there are two rectangles with dimensions 3 cm by 6 cm, two rectangles with dimensions 2 cm by 6 cm and two rectangles with dimensions 2 cm by 3 cm. The total surface area is then

2 × 3 × 6 + 2 × 2 × 6 + 2 × 2 × 3 = 72 cm2

Example 1:

Find the surface area of the given rectangular prism in square cm.

Rectangular Prism in Square cm

Solution

Step 1:

Using net, the surface area of a rectangular prism

= 2lw+wh+lh; l = 6 ; w = 5; h = 3

Step 2:

Surface area of given prism = 26×5+6×3+3×5

= 230+18+15

= 126 square cm

Example 2:

Find the surface area of the given rectangular prism in square cm.

Rectangular Prism Square cm

Solution

Step 1:

Using net, the surface area of a rectangular prism

= 2lw+wh+lh; l = 5; w = 6; h = 4

Step 2:

Surface area of given prism = 25×6+5×4+6×4

= 230+20+24

= 148 square cm

6 0
3 years ago
Read 2 more answers
in 1985, there were 285 cell phone subscribers in the small town of Centerville. the number of subscribers increased by 75% per
Vladimir79 [104]

Answer:

  43,872

Step-by-step explanation:

The growth of cell phone subscribers in Centerville can be modeled by an exponential function.

  y = ab^x . . . . . where a = initial value, b = growth factor

The growth rate is given as 75% per year, so x will have units of years. It will be zero for the year 1985. The growth factor is ...

  b = 1 + growth rate = 1 +0.75 = 1.75

Then the model is ...

  y = 285·1.75^x

__

For x = 1994 -1985 = 9, the number of subscribers is modeled as ...

  y = 285·1.75^9 ≈ 43,872

The model predicts 43,872 cell phone subscribers in 1994.

7 0
2 years ago
Last week jackson babysits 1 1/2 times as many hours as he babysat this week . last week jackson babysat 12 hours .how many hour
Stells [14]
Multiply fraction (1 1/2) by the # of hours last week (12).

= 1 1/2 * 12
change to improper fraction
= 3/2 * 12
multiply numerators
= (3*12)/2
= 36/2
= 18 hours

ANSWER: D) 18 H

Hope this helps! :)
5 0
4 years ago
How to do this question I need to go to school on 1/9
ELEN [110]
$7.9 cost of one pack
10 packs cost is $79
She pays $29 + Voucher

From the total $79 we substract the $29 she paid with cash or card.

79-29=50

So the value of the voucher is $50

PS: celia should cut on chocolate. Not healthy for her :)
5 0
3 years ago
Read 2 more answers
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