All categories

4 years ago

12 POINTS PLEASE HELP 9TH GRADE MATH

Mathematics

1 answer:

Akimi4 [234]4 years ago

8 0

Answer:

The answer to your question is 73°

You might be interested in

What are the slope, m, and y-intercept, (0,b), of the line described by the equation 3x+6=12

alina1380 [7]

Answer:

slope=3,y-intercept=6

Step-by-step explanation:

Slope is the rate of change so It is an independent variable and has an x at the end

The y-intercept is the initial value which is technically the start off and the number 6 seems to be a dependent variable.

7 0

4 years ago

Write the equation of the line perpendicular to 2x+3y=9 that passes through (-2,5). Write your answer in slope-intercept form. S

Harman [31]

ANSWER

$y = \frac{3}{2} x + 8$

EXPLANATION

The line given to us has equation,

$2x + 3y = 9$

We need to write this equation in the slope intercept form to obtain,

$3y = - 2x + 9$

$\Rightarrow \: y = - \frac{2}{3}x + 3$

The slope of this line is

$m_1 = - \frac{2}{3}$
Let the slope of the perpendicular line be

$m_2$

Then
$m_1 \times m_2 = - 1$

$- \frac{2}{3} m_2= - 1$

This implies that,

$m_2 = - 1 \times - \frac{3}{2}$

$m_2 = \frac{3}{2}$

Let the equation of the perpendicular line be,

$y = mx + b$

We substitute the slope to get,

$y = \frac{3}{2} x + b$

Since this line passes through
$(-2,5)$
it must satisfy its equation.

This means that,

$5= \frac{3}{2} ( - 2)+ b$

$5 = - 3 + b$

$5 + 3 = b$

$b = 8$

Wherefore the slope-intercept form is

$y = \frac{3}{2} x + 8$

6 0

4 years ago

As an estimation we are told 5 miles is 8 km. <br> Convert 2.5 miles to km.

Digiron [165]

Answer:

$4km$

Step-by-step explanation:

In order to find the answer to this question you must simply divide.

$5m=8km$

$2.5m=4km$

$8\div2=4$

$5=2.5+2.5$

$=4km$

Hope this helps

7 0

3 years ago

A wire 22 cm long is cut into two pieces. The longer piece is 4 cm longer than the shorter piece. Find the length of the shorter

guajiro [1.7K]

Answer:

Explanation: L = longer piece S = shorter piece

L + S = 22

L = 4 + S

S + S + 4 = 22
-4 -4
S + S = 18

S = 18/2 = 9 cm

L = 4 + S —> 4 + 9 = 13 cm

To confirm:

13 cm + 9 cm = 22 cm

Therefore, the shorter piece is 9 cm.

3 0

3 years ago

The two triangles are similar What is the value of x? Enter your answer in the box x =

lilavasa [31]

Answ x=59

Step-by-step explanation:

4 0

3 years ago