All categories

3 years ago

Helpppppppppppppp plzzzzz

Mathematics

1 answer:

AnnyKZ [126]3 years ago

3 0

Answer:

x = 12.75

Measure of angle YXZ = 49.75 degrees

Step-by-step explanation:

Complementary angles have a sum of 90 degrees so we add them and set them equal to 90.

3x + 2 + 5x - 14 = 90

Combine like terms

8x - 12 = 90

Add 12 to both sides

8x = 102

Divide both sides by 8 to isolate x

x = 12.75

Measure of angle YXZ = 49.75 degrees

You might be interested in

What is the rule

Taya2010 [7]

Add 5

y is found by adding 5 to x

5 0

3 years ago

If Mike loses $5 per week, how much does he lose in 4 weeks?

MrMuchimi

Answer:

Step-by-step explanation:

$1week \: = 5 \\ 4 \: weeks = x \\ \\ x = 20$

hope this helps you.

Can I have the brainliest please?

Have a nice day!

7 0

3 years ago

Find the equation of all tangent lines having slope of -1 that are tangent to the curve y=(9)/(x+1)

fredd [130]

Answer:

$f(x)=\frac9{x+1}\\ f'(x)=-\frac9{(x+1)^2}\\ f'(x)=-1\ \iff\ -\frac9{(x+1)^2}=-1\ \to \ \frac9{(x+1)^2}=1\ \to \ (x+1)^2=9\\ |x+1|=3\ \to \ x+1=3\ \vee\ x+1=-3\\ x_1=2\ \vee\ x_2=-4\\ f(x_1)=f(2)=\frac9{2+1}=3\\ f(x_2)=f(-4)=\frac9{-4+1}=-3$

First tangent line:

$y=f'(x_1)\cdot (x-x_1)+f(x_1)\ \to \ y=-1(x-2)+3\ \to \ y=-x+5$

Second tangent line:

$y=f'(x_2)\cdot (x-x_2)+f(x_2)\ \to \ y=-1(x+4)-3\ \to \ y=-x-7$

Notice: slope of -1 means that both $f'(x_1), \ f'(x_2)$ are equal to -1, so $f'(x_1)=-1 \ and \ f'(x_2)=-1$

6 0

3 years ago

Read 2 more answers

What is the answer to 7(1 + 4k)

Sophie [7]

How to solve it:
•1. multiply 7 x 1= 7
•2. multiply 7 x 4k= 28k

so the answer is: 7+28k

i hope i have been helpful :)

8 0

3 years ago

Read 2 more answers

Solve each system by graphing 4x-y=9 and x-3y=16

Fynjy0 [20]

\left[x \right] = \left[ 16+3\,y\right][x]=[16+3y] totally graphic doing ur sheets

5 0

3 years ago

Read 2 more answers