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Alik [6]
4 years ago
13

I need help I've been trying but couldn't get it

Mathematics
1 answer:
Sophie [7]4 years ago
5 0
Since angles that add up to make a line add up to 180 degrees, you know

Angle ACD + angle ACB=180

Since it tells you ACD is 100, substitute that in.

100+ACB=180
ACB=80

Next, the sum of all the interior angles in a triangle is 180.

ACB+A+B=180.

Substitute in the values you know.

80+A+60=180
A=40

Angle a is 40 degrees.

Hope this helps!
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Is 563 divisibly by 4
marusya05 [52]

Answer:

No

Step-by-step explanation:

To be divisible by 4 the last two digits have to be divisible by 4

so

is 63 divisibly by 4?

no

because is odd and four is even

so we can conclude that 563 is not divisible by 4

3 0
3 years ago
Read 2 more answers
Given a:b and b:c, find a:b:c. Write the ratio in simplest form. a:b=10:25 and b:c=45:27
Aleksandr [31]

Answer:

a:b:c=2:5:3

Step-by-step explanation:

a:b=10:25

a:b=2:5(divided by 5)

b:c=45:27

b:c=5:3(divided by 9)

a:b:c=2:5:3

6 0
3 years ago
Sinx + cosx= 1 then find the value of x
Kobotan [32]
   1√2sinx+1√2cosx=1√2.

This can be written as

cos(x−π4)=cos(π4)

The general solution of this equation ls

x−.π4=2nπ±π4,n=0,±1,±2,...,

So, x=2nπandx=(4n+1)π2,n=0,±1,±2,±3....

 ANSWER: x=2nπandx=(4n+1)π2,n=0,±1,±2,±3....


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4 0
3 years ago
Whats 1/3 of 1/2? thanks!​
GuDViN [60]

Answer:

It's 1/6, hope this helps!

7 0
2 years ago
Read 2 more answers
If Y= 9, is the inequality true or false? Y + 3 &lt; 12
Serjik [45]

Answer:

False

Step-by-step explanation:

To solve this problem, plug in the value for Y, 9, into the inequality.

9 + 3 < 12

Now, solve the inequality. Evaluating 9 + 3, the equation becomes:

12 < 12

12 is not less than 12 (12 = 12), therefore the answer is false.

5 0
4 years ago
Read 2 more answers
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