What is the missing length?<br> 20 cm<br> area = 580 cm

To derive the standard formula of a circle, a radius r is constructed as the hypotenuse of a right triangle as shown. On a coord

vlabodo [156]

Answer:

The answer is "x-h and y-k".

Step-by-step explanation:

The center is (h, k) with E (x, y) point, and its length of the legs used during extracting the standard circle equation should be found. Its right triangle length base is (x-h) units, as well as the right triangle's length, is (y-k). So, these are the required leg lengths, that's why the above-given points are correct.

4 0

3 years ago

2) The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there ar

IRINA_888 [86]

Answer:

Step-by-step explanation:

Since the number of streetlights in a town is growing linearly, the street lights are increasing in arithmetic progression.

The formula for determining the nth term of an arithmetic sequence is expressed as

Tn = a + (n - 1)d

Where

a represents the first term of the sequence.

d represents the common difference.

n represents the number of terms in the sequence.

For n = 0, T0 = 130, therefore,

130 = a + (0 - 1)d

130 = a - d - - - - - - - - - -1

For n = 4, T4 = 154, therefore,

154 = a + (4 - 1)

154 = a + 3d - - - - - - - - - -2

Subtracting equation 2 from equation 1, it becomes

- 24 = - 4d

d = - 24/- 4 = 6

Substituting d = 6 into equation 1, it becomes

130 = a - 6

a = 130 + 6 = 136

a) The explicit formula for the number of lights in n months is

Tn = 136 + 6(n - 1)

b) The number of months that it will take to reach 200 lights is

200 = 136 + 6(n - 1)

200 - 136 = 6(n - 1)

64 = 6(n - 1)

6n - 6 = 64

6n = 64 + 6 = 70

n = 70/6 = 11.66

Approximately 12 months

3 0

3 years ago

PLEASE HELP .!!! ILL GIVE BRAINLIEST.. *EXRTA POINTS* .. DONT SKIP :(( !

olga nikolaevna [1]

Answer:

its D

Step-by-step explanation:

he is incorrect so that leaves us with b or d. and b is wrong about how much cheaper 60% is.

the 40% one is $75.57

the 60% one is $67.98

60% is about 7 dollars less. so it's D

4 0

3 years ago

What is the product of 1.7 × 10−13 and 3.5 × 1025?

kkurt [141]

ANSWER

$3.95 \times {10}^{12}$

EXPLANATION

The first number is

$1.7 \times {10}^{ - 13}$

The second number is

$3.5 \times {10}^{25}$

The product of the above two numbers is
$1.7 \times {10}^{ - 13} \times 3.5 \times {10}^{25}$

We regroup the numbers to obtain,

$(1.7 \times 3.5) \times {10}^{ - 13} \times {10}^{25}$

We now multiply out the expression in the bracket to obtain,

$3.95 \times {10}^{ - 13} \times {10}^{25}$

Recall also that,

${a}^{m} \times {a}^{n} = {a}^{m + n}$

We apply this property to obtain,

$3.95 \times {10}^{ - 13 + 25}$

This finally simplifies to,

$3.95 \times {10}^{12}$

Therefore the correct answer is D.

8 0

3 years ago

Read 2 more answers

Shoes?

FromTheMoon [43]

The answer Is C here is my explanation:

20% of 900 = 180

Therefore 900+180=1080

So there answer is 1080 (C)

5 0

2 years ago

Read 2 more answers

What is the missing length? 20 cm area = 580 cm