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2 years ago

20 POINTS PLZ HELP!!!

Mathematics

1 answer:

Alexandra [31]2 years ago

4 0

Both triangles that are given (with right angles) lie in plane m, proving that AC is perpendicular to plane m. As angle acd is from a triangle that shares the common perpendicular, it too is a right angle

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Round 15,677 to the nearest ten thousand

masha68 [24]

15,677 rounded to the nearest ten thousand would be...
20,000

5 0

2 years ago

9x3^15 can be written as 3^n. What is the value of n

stich3 [128]

N=17
used a calculator

5 0

2 years ago

Read 2 more answers

Frank and Linda just finished a meal and received their bill for $47.60. They would like to leave their server a 20 percent tip.

ankoles [38]

Answer:

$57.12

Step-by-step explanation:

47.60(1.20)=$57.12

7 0

2 years ago

Is the relationship shown by the data linear? If so, model the data with an equation. x y –7 5 –5 9 –3 13 –1 17

diamong [38]

Given:

The table of values is:

x : -7 -5 -3 -1

y : 5 9 13 17

To find:

Whether the given data is linear and then find the equation.

Solution:

The given data is linear if the slope and rate of change is constant.

Slope formula:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Using the slope formula. we get

$\dfrac{9-5}{-5-(-7)}=2$

$\dfrac{13-9}{-3-(-5)}=2$

$\dfrac{17-13}{-1-(-3)}=2$

Since the rate of change is constant, i.e., 2, therefore the given data is linear.

The slope of a linear equation is 2 and it passes through the point (-7,5). So, the equation of the line is:

$y-y_1=m(x-x_1)$

$y-5=2(x-(-7))$

$y-5=2(x+7)$

$y-5=2x+14$

Adding 5 on both sides, we get

$y-5+5=2x+14+5$

$y=2x+19$

Therefore, the equation for the given data is $y=2x+19$ .

8 0

2 years ago

What is the value of "X"?

MrMuchimi

Answer:

Step-by-step explanation:

All triangles equal 180 degrees to this is what I did:

8x + 2 + 70 + 60 = 180

8x + 2 + 130 = 180

8x + 132 = 180

subtract 132 from each side

8x = 48

now divide each side by 8 to isolate the x

x = 6.

3 0

2 years ago