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GarryVolchara [31]
1 year ago
9

9. If DF = 42, find DE.7x+1 4x-3DEF what is DE​

Mathematics
1 answer:
andreev551 [17]1 year ago
3 0

Answer:

29

Step-by-step explanation:

So DF = 42, And we know that DF = DE + EF

Therefore (7x+1) + (4x-3) = 42

11x -2 = 42

11x = 44

x = 4

Substitute x = 4 onto DE equation, so 7(4) +1

= 29.

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Which recursive formula can be used to generate the sequence below, where f(1) = 6 and n ≥ 1?
Trava [24]

f (n + 1) = f(n) – 5  is the recursive formula can be used to generate the sequence below, where f(1) = 6 and n ≥ 1

<h3><u>Solution:</u></h3>

Given that,

f(1) = 6 and n ≥ 1

Given sequence is 6, 1, -4, -9, -14

<em><u>Let us first analyse the logic used in this sequence</u></em>

6 - 5 = 1

1 - 5 = -4

-4 - 5 = -9

-9 - 5 = -14

Thus the next terms in sequence are obtained by subtracting 5 from previous term

Thus a recursive formula can be formed as:

f (n + 1) = f(n) – 5

Where "n" is the nth term

Let us check our recursive formula:

f(1+ 1) = f(1) - 5

f(2) = f(1) - 5

f(2) = 6 - 5 = 1

Thus we have got f(2) = 1 which is correct as per given sequence

4 0
2 years ago
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(b) Amira takes 9 hours 25 minutes to complete a long walk. (i) Show that the time of 9 hours 25 minutes can be written as 113 1
geniusboy [140]

<em>Answer: x= mc2 Is the formula of the given question</em>

5 0
1 year ago
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Product A requires 5 machine hours per unit to be produced, Product B requires only 3 machine hours per unit, and the company's
Lesechka [4]

Answer:

  Produce only Product B.

Step-by-step explanation:

The contribution margin per machine hour for product A is ...

  ($16 -$6)/(5 hour) = $2 per hour

The contribution margin per machine hour for product B is ...

  ($12 -$5)/(3 hour) ≈ $2.33 per hour

The company should produce the maximum possible number of the product that contributes the most per machine hour: Product B.

5 0
1 year ago
Four grey polygons join together as shown in the diagram. I’ve calculated angle a but I don’t know angle b. Angle a is 108
mr Goodwill [35]

Answer:

Part 1) a=108^o

Part 2) b=24^o

Step-by-step explanation:

Part 1) Find the measure of angle a

we know that

The formula to calculate the measure of the interior angle of a regular polygon is equal to

\frac{180^o(n-2)}{n}

where

n is the number of sides of the regular polygon

For the regular pentagon in the figure

n=5

substitute in the formula

a=\frac{180^o(5-2)}{5}

a=\frac{180^o(3)}{5}

a=108^o

Part 2) Find the measure of angle b

Remember that a regular polygon has equal sides and equal interior angles

so

In the figure , the length of the side of the two smaller equilateral triangles is equal to the length of the side of the regular pentagon

therefore

The triangle in white of the figure is an isosceles triangle

The measure of the vertex angle of the isosceles triangle is equal to

360^o-(108^o+60^o+60^o)=132^o

Remember that

The sum of the interior angles of triangle must be equal to 180 degrees

so

2b+132^o=180^o

solve for b

2b=180^o-132^o

2b=48^o

b=24^o

7 0
1 year ago
Noah read 6 books in 9 months. What was his rate of reading in books per month?​
MatroZZZ [7]

a quarter of a book a month

8 0
2 years ago
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