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3 years ago

What is an equation for the linear function whose graph contains the points (9,7) and (4,-8)

Mathematics

1 answer:

Tom [10]3 years ago

3 0

Answer

y-7=3 * (x-9)

Step-by-step explanation:

find the equation using point slope formula

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ollegr [7]

Answer:

x = 2

y = -3

z = 4

( 2 , -3, 4 )

Step-by-step explanation:

x + y + z = 3 ---- i

x – y =5 ---- ii

y - z = -7 ---- iii

ii + iii

x - z = -2 ---- iv

i + ii

2x + z = 8 --- v

iv + v

3x = 6

x = 2

x=2 substitute for v

z = 4

x =2 substitute for ii

y = -3

5 0

3 years ago

If a = 7 and b = 11, what is the measure of ∠B? (round to the nearest tenth of a degree) A) 32.5° B) 39.2° C) 50.5° D) 57.5°

Ilia_Sergeevich [38]

Answer:

D) 57.5°

Step-by-step explanation:

As the question is not complete. So, let's suppose it is a right angle triangle then, we can apply Pythagoras theorem to calculate the hypotenuse or the third side.

Pythagoras Theorem = $c^{2}$ = $a^{2} + b^{2}$

a = 7 and b = 11

$a^{2}$ = 49

$b^{2}$ = 121

Plugging in the values, we will get:

$c^{2}$ = 49 + 121

$c^{2}$ = 170

c = $\sqrt{170}$

To calculate the unknown angle B, we can use law of sine.

Law of sine = $\frac{a}{sinA}$ = $\frac{b}{sinB}$ = $\frac{c}{sinC}$

So,

$\frac{c}{sinC}$ = $\frac{b}{sinB}$

$\frac{\sqrt{170} }{sin90}$ = $\frac{11}{sinB}$

Sin90 = 1

sinB = $\frac{11}{\sqrt{170} }$

B = $sin^{-1}$ ( $\frac{11}{\sqrt{170} }$ )

B = 57.5°

8 0

3 years ago

What is a multiple in math

Anit [1.1K]

A multiple in math is like 9: 9,18,27,36,45,54 or like 2:2,4,6,8,10,12,14

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3 years ago

Evaluate each function for the domain -2,-1,0,1,2,3 as the values of the Omani increase, do the values of the range increase or

anyanavicka [17]

Can u give me thanks I need it so I can get 50 points plz plz

6 0

3 years ago

What is .4, 5/8, 38%, .5 from least to greatest

MrRa [10]

Least to Greatest: 38%, .4, .5, 5/8

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3 years ago

Read 2 more answers