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SSSSS [86.1K]
4 years ago
15

Gavyn was thinking of a number. Gavyn doubles it and gets an answer of 30.6. What was the original number?

Mathematics
1 answer:
GrogVix [38]4 years ago
3 0

Answer:

15.3

Step-by-step explanation:

Half the result.

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Please help, marking brainleist, show work
Stels [109]

Answer:

Perimeter: 16x + 16

Area: 40x + 15

Step-by-step explanation:

Remember, the perimeter is the sum of all the sides of a figure, it can be found by adding up all the sides. The area is the space within the figure, in the case of a quadrilateral can be found by multiplying the length by the width. Finally, in a rectangle, the opposite sides are congruent, parallel, and intersect in 90degree (right) angles.

Using this,

1. Find the perimeter

Since opposite sides are congruent, there will be two sides with a measure of ( 8x + 3 ), and two sides with the measure of 5. Hence the sum of all the sides would be

8x + 3 + 8x + 3 + 5 + 5

Add them together,

16x + 16.

The perimeter of the figure is 16x + 16

2. Find the area,

To find the area of a rectangle, multiply the length by the width.;

( 8x + 3 ) * 5

Distribute:

40x + 15

The area of the figure is 40x + 15

4 0
3 years ago
18. Find the measure of each numbered angle.
DiKsa [7]

Answer:

m∠1 = 50°, m∠2 = 90°, m∠3 = 40°, and m∠4 = 50°

Step-by-step explanation:

Angles on straight line are equal;

m \angle1 + 130 = 180

m \angle1= 180 - 130 \\ m \angle1= 50

Vertical angles are equal,

m \angle4=  m \angle \: 1= 50 \degree

Complementary angles add up to 90°.

m \angle3 + m \angle4  = 90 \degree \\ 40 + m \angle3 = 90 \degree. \\  m \angle3 = 90 \degree - 50 \degree \\ m \angle3 = 40 \degree

Angles on straight line adds up to 180°

m \angle1 + m \angle2 + m \angle3 = 180 \degree

40 + m \angle2 + 50 = 180 \\  m \angle2 = 180 - 50 - 40 = 90

7 0
3 years ago
Benjamin's age is 6 years less than twice Lucas's age. If Benjamin is 12 years old, how old is Lucas? Choose the answer below th
julsineya [31]

We can express Benjamin's age with x, we can express Luca's age as y.

x-6=2y

So, if x=12

2y=6

y=3

Therfore, Lucas is 3 years old

3 0
3 years ago
You are repairing a fence and have 7.9 metres of wood. You need 10 metres.
iren2701 [21]
4 you will have 2.1 meters of wood left over
5 0
3 years ago
From a group of 6 candidates, a committee of 2 people is selected. In how many different ways can the committee be selected? I k
kolezko [41]
This is a combination problem. 

6 nCr 2

\frac{6!}{2! * (6-2)!} =  \frac{720}{48}=15<span><span>

</span></span>
7 0
3 years ago
Read 2 more answers
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