All categories

3 years ago

Given: m∠9 = 50° and m∠5 = 42°. Find the m∠14. Just type the number of the answer in the answer box.

Mathematics

1 answer:

sergejj [24]3 years ago

3 0

Answer:

Step-by-step explanation:

∡5 = 42°

find: ∡ 14

solution:

since ∡5 = ∡13 = 42°

∡14 = 180 - ∡13

= 180 - 42

= 138°

You might be interested in

Which of the following is an extraneous solution of the square root of -3x-2=x+2

yarga [219]

Answer:

x=-6 is an extraneous solution

Step-by-step explanation:

we have

$\sqrt{-3x-2} =x+2$

squared both sides

$-3x-2=(x+2)^2$

$-3x-2=x^2+4x+4$

$x^2+7x+6=0$

solve the quadratic equation by graphing

The solution is x=-6 and x=-1

see the attached figure

<u><em>Verify each solution</em></u>

substitute the value of x in the original expression

For x=-6

$\sqrt{-3(-6)-2} =-6+2$

$\sqrt{16} =-4$

$4=-4$ ----> is not true

Is an extraneous solution

For x=-1

$\sqrt{-3(-1)-2} =-1+2$

$\sqrt{1} =1$

$1=1$ ----> is true

Is the solution

4 0

3 years ago

-4x + 12 = 8<br><br> Solve for x

jasenka [17]

Answer:

x=1

Step-by-step explanation:

1.Move the constant to the right

2. Calculate

3. Divide both sides

4 0

3 years ago

X+y=11 and 22X+15y=228

Lady_Fox [76]

X+y=11
22x+15y=228

y=11-x
22x+15y=228
22x+15(11-x)=228
22x+165-15x=228
7x+165=228
7x=63
x=9

9+y=11
y=2

The solution to the system of equations is (9,2)

6 0

3 years ago

Will mark brainliest! The triangles shown below must be congruent, true or false

olchik [2.2K]

True because they have the same size angles

8 0

3 years ago

Read 2 more answers

Answer all questions: 1) The electric field of an electromagnetic wave propagating in air is given by E(z,t) = 4cos(6 x 10^8 t -

Andre45 [30]

Answer:

Step-by-step explanation:

4 0

3 years ago