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erik [133]
3 years ago
7

< ADF measures 2x degrees and < FDC measures x + 12 degrees. What is the measure

Mathematics
1 answer:
gtnhenbr [62]3 years ago
7 0

Answer:

<h2>Angle ADF is equal to 52° and angle FDC is equal to 38°.</h2>

Step-by-step explanation:

In the image attaches, you can observe that angles ADF and FDC are complementary angles, because they sum 90°.

\angle ADF + \angle FDC = 90\°

And we know that

\angle ADF=2x\\\angle FDC = x+12

Replacing these expressions, we have

2x+x+12=90\°\\3x=90\° - 12\°\\x=\frac{78}{3}\\ x=26

Then, we replace this value in each expression to find both angles measures.

\angle ADF= 2(26)=52\°\\\angle FDC = 26+12=38\°

Therefore, angle ADF is equal to 52° and angle FDC is equal to 38°.

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max2010maxim [7]

Answer: 11/3

Step-by-step explanation:

5 0
3 years ago
If you multiply a number by 3 and then add 40, the result is the same as if you add 17 to the number and then multiply by 2. Wha
Finger [1]

Answer:

The number is -6

The second operation is -60

Step-by-step explanation:

Let the number be x.

Solving (a): The value of x

Operations 1:

Multiply by 3: 3x

Add 40: 3x + 40

Operations 2:

Add 17: x + 17

Multiply by 2: (x + 17) * 2

To find x, equate both operations.

3x + 40 =  (x + 17) *2

3x + 40 =  2x + 34

Collect like terms

3x - 2x = 34 - 40

x = -6

Solving (b):

Operations:

Subtract 9: x - 9

Multiply by 4: (x - 9) * 4

This gives:

(x - 9) *  4 = (-6 - 9) * 4

(x - 9) *  4 = -15 * 4

(x - 9) *  4 = -60

6 0
3 years ago
so i don't understand 3rd grade made but this says "estimate the sum" estimate the sum of 265+436 but my only numbers i have to
matrenka [14]

You round the number to the nearest 100 :- So 265 is closer to 300 that it is to 200 so you use 300.

436 is closest to 400 then 500 so we use 400.

so the estimate is 300 + 400 = 700.

5 0
4 years ago
Given that 7^2=12^x, evaluate 12^2x
melomori [17]
7^2=12^x
this implies that:
ln7^2=ln 12^x
2ln 7=x ln 12
x=(2 ln 7)/ln12
thus
12^2x=12^[2((2 ln 7)/ln12)]
=2401
Answer: 2401
5 0
3 years ago
Solve for the inequality <br><br> 2(m-3) +7&lt;21
Hoochie [10]

Answer:

2m-6 +7<21

2m+1<21

2m<20

m<10

7 0
3 years ago
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