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timama [110]
4 years ago
15

What number when substituted for the variable, makes the equation 4/5x = 20 true?

Mathematics
2 answers:
Galina-37 [17]4 years ago
8 0
25
but im bad sooooooooo
ivolga24 [154]4 years ago
3 0
Sent a picture of the solution to the problem (s).

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Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility
pashok25 [27]

Answer: a) D = √148

                 m = (-5,4)

b) D = √241

m = (1, 7.5)

c) D = √20

m = (0,-4)

Step-by-step explanation:

Distance and Midpoint Formulas

distance = D = √[(x₂-x₁)² + (y₂-y₁)²]

Midpoint: m = ((x₂+x₁)/2 , (y₂+y₁)/2)

(−4, 10) and (−6, −2)

D = √[(-6-(-4))² + (-2-10)²] = √[(-6+4))² + (-2-10)²] = √[(-2))² + (-12)²] =

√[4 + 144] = √148

m = ((-6+(-4))/2 ; (-2+10)/2

m = (-10/2 ; 8/2)

m = (-5,4)

(−1, 15) and (3, 0)

D = √[(3-(-1))² + (0-15)²] = √[(3+1))² + (0-15)²] = √[(4)² + (-15)²] =

√[16 + 225] = √241

m = ((3+(-1))/2 ; (0+15)/2

m = (2/2 ; 15/2)

m = (1,7.5)

(2, −3) and (−2, −5)

D = √[(-2-2)² + ((-5)-(-3)²] = √[(-4))² + (-5+3)²] = √[(-4)² + (-2)²] =

√[16 + 4] = √20

m = (-2+2))/2 ; (-5+(-3))/2

m = (0/2 ; -8/2)

m = (0,-4)

3 0
3 years ago
Someone plz tell me the steps thanks
Assoli18 [71]
64.9814814815You can search for any mathematical expression, using functions such as: sin, cos, sqrt, etc. You can find a complete list of functions here.RadDegx!Invsinlnπcoslogetan√AnsEXP<span>xy</span>()%AC789÷456×123−0.=<span>+

</span>
4 0
3 years ago
Find the least common multiple of the following polynomials: 5y^2-80 and y+4
algol [13]
5y^2 - 80 = 5(y^2-16) = 5(y - 4)(y + 4)

LCM of 5(y - 4)(y + 4) and (y + 4) is 5(y - 4)(y + 4) 

-----------------------------------------------------------------------
Answer: 5(y - 4)(y + 4) (Answer D)
-----------------------------------------------------------------------
3 0
3 years ago
Read 2 more answers
What is the y-interecept of the line y-14=6(x-2.5)
spayn [35]

Answer:

Y-intercept = -1

Step-by-step explanation:

Convert to slope-intercept form:

y-14 = 6(x-2.5)

y-14 = 6x-15

y = 6x-1

Therefore, the y-intercept is -1

3 0
3 years ago
Determine the x- and y-intercepts of the graph of y=−1/3x+3 .
andrey2020 [161]
X-intercept : -9 (-9,0)
y-intercept: 3 (0,3)
3 0
3 years ago
Read 2 more answers
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