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Butoxors [25]
3 years ago
12

Which equation represents the line that passes through the point (-1 -2) and (3 10)

Mathematics
1 answer:
ELEN [110]3 years ago
5 0

Answer:

the answer is y = 3x + 1

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history teacher is giving a test. The total points for the test is 99 points and contains 17 questions. Multiple Choice question
kati45 [8]
Whats the question ???
8 0
3 years ago
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Use the Pythagorean Theorem to find an approximate value of x
kozerog [31]

Answer:

Step-by-step explanation:

Hypotenuse² =base² + altitude²

(3x + 4)² = (2x + 1)² + (3x)²

{Use (a+b)² = a² + 2ab + b²}

(3x)² + 2*3x+4 + 4² = (2x)² + 2*2x*1 + 1² + 9x²

9x² + 24x + 16 = 4x² + 4x + 1 + 9x²

9x² + 24x + 16 = 13x² + 4x + 1

0 = 13x² + 4x  + 1 - 9x²  - 24x - 16

13x² - 9x² + 4x - 24x +1 - 16 = 0

4x² - 20x - 15 = 0

a = 4 ; b =-20  ; c = -15

D = b² - 4ac  = (-20)² - 4*4*(-15) = 400 + 240 = 640

√D = √640 = 25.30

x=\dfrac{-b+\sqrt{D}}{2a} \ ; \ x=\dfrac{-b-\sqrt{D}}{2a}\\\\\\x=\dfrac{20+25.30}{2*4} \ ; \ x=\dfrac{20-25.30}{2*4}\\\\\\x=\dfrac{45.30}{8} \ ; \  x =\dfrac{-5.30}{8}\\\\

x = 5 .66   ; x = -0.66

Ignore x = -0.66 as length of a side cannot be negative

Answer : x = 5.66

7 0
2 years ago
If 36 units is 75% how much is 100%
hodyreva [135]

Answer:

48 units

Step-by-step explanation:

75%=36

or 3/4=36

then 1/4=12 and 4/4=48

8 0
3 years ago
Read 2 more answers
The students in Mr. Sanchez's class are converting distances measured in miles to kilometers. To estimate the number of kilomete
Luda [366]
Let 
x-----------> the distances measured in miles

<span> Abby method 
1)2x
2)2x-20%------> 2x-0.4x
</span>algebraic expression<span>-----> [2x-0.4x]---------> 1.6x

</span> Renato method 
1)x/5
2)(x/5)*8-------> 8x/5
algebraic expression----->[8x/5]---------------> 1.6x<span>

Part B)
</span>[2x-0.4x]=[8x/5]---------> 1.6x=8x/5--------> 5*(1.6x)=8x-------> 8x=8x
therefore
<span>the two methods give the same answer
the answer is 1.6x</span>
4 0
3 years ago
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What is the answer to 18.9=2.1x
Contact [7]
9 to find the answer divide 2.1 by 18.9 in which you'll get 9 = x
8 0
3 years ago
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