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2 years ago

Midsegments DE= 7, EF=12 DF=16 if D, E, and F are midpoints of the sides of triangle ABC, find the perimeter of triangle of ABC

Mathematics

1 answer:

elena-14-01-66 [18.8K]2 years ago

7 0

Answer:

In a triangle, the segment joining the midpoints of any two sides will be parallel to the third side and half its length ⇒DE is parallel to AC, and DE = 8, AC=16.

Similarly, DF is parallel to BC, and DF=6, BC=12

Step-by-step explanation:

Similarly, EF is parallel to AB, and EF=3.5, AB=7

Hence, perimeter of ΔDEF = 8+6+3.5 = 17.5

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3 years ago

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If 2 times an integer x is increased by 7, the result is always greater than 16 but less than 29.

Degger [83]

Answer:

X=6

Step-by-step explanation:

Turning the question into a formulae

2X + 5 > 16; and 2X + 5 < 29

Let’s start by calculating the lower limit

2X + 5 = 16

X = (16–5)/2

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3 years ago

1.(01.01)

Alja [10]

The right answer is: Add 1, then divide by 6

Step-by-step explanation:

Given equation is:

$6x-1 = 11$

The solution of equation means that we have to isolate the variable on one side of the equation

So,

We will solve the equation to write the sequence of operations

So,

Adding 1 on both sides

$6x-1+1 = 11+1\\6x = 12$

Dividing both sides by 6

$\frac{6x}{6} = \frac{12}{6}\\x = 2$

We can see that the sequence is: Add 1 then divide by 6

Hence,

The right answer is: Add 1, then divide by 6

Keywords: Linear equation, variable

Learn more about linear equation at:

#LearnwithBrainly

5 0

2 years ago

Can someone help me with this

leonid [27]

Answer:

(y-b) /x = m

Step-by-step explanation:

y = mx+b

Subtract b from each side

y -b = mx+b-b

y-b = mx

Divide each side by x

(y-b) /x = mx/x

(y-b) /x = m

8 0

2 years ago