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3 years ago

In the diagram below of triangle EFG, H is a midpoint of EF and J is a midpoint

Mathematics

1 answer:

gregori [183]3 years ago

8 0

Answer:

m<HJF = $56^{o}$

Step-by-step explanation:

From the given diagram, ΔFHJ is similar to ΔFEG. So that;

m<HJF = m<EGJ

⇒ 10x + 36 = 6x + 44

10x - 6x = -36 + 44

4x = 8

x = $\frac{8}{4}$

x = 2

Substitute the value of x in the expression for m<HJF to have,

m<HJF = 10x + 36

= 10(2) + 36

= 20 + 36

m<HJF = $56^{o}$

The measure of angle HJF is $56^{o}$ .

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Answer:

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Step-by-step explanation:

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3 years ago

How many real solutions exist for this system of equations?

Rom4ik [11]

Answer:

One

Step-by-step explanation:

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2 years ago

Hermina cut a 10 by 15 piece of cardboard down the diagonal

katen-ka-za [31]

Answer:

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Step-by-step explanation:

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2 years ago

Use counting to determine the whole number that corresponds to the cardinality of these sets:______. (a) A= (xl x € Nand 20.<

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

Cardinality of a set is defined as number of element in a set. It is represented as n(X) where X is any set.

a) Given the set A =(x l x € N and 20.< x<27). According to the set, the set contains the values of natural numbers between 20 and 27. The values are 21, 22, 23, 24, 25 and 26

A = (21, 22, 23, 24, 25, 26)

According to the set A, it can be seen that there are 6 elements in the set, this means n(A) = 6.

b) Given B=(x | xeN and x+1=x)

Since natural numbers starts from 1, the first element in the set is 2 i.e 1+1

The elements of the set B = (2, 3, 4, 4...)

The number of whole number in the set is therefore infinite.

c) For the set C={x l xe N and (x- 1)(x - 9) = 0)

We need to get the root of the equation (x- 1)(x - 9) = 0

x-1 = 0 and x-9 = 0

x = 1 and x = 9

Hence the element C = (1,9)

The number of whole number in the set is n(C) = 2

d) D={xlx E N, H X 5 100, and x is divisible by both 5 and 8)

Given the value of x between 5 and 100, the values of x divisible by 5 = (10, 15, 20, 25, 30, 35, 40, 45, 50 , 55, 60 , 65, 70, 75, 80 85, 90, 95)

values of x divisible by 8 = (16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96)

The total number of elements in both set = 29 i.e n(D) = 29

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3 years ago