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Ierofanga [76]
2 years ago
7

Learn with an example

Mathematics
1 answer:
mafiozo [28]2 years ago
7 0

Answer:

-8

Step-by-step explanation:

In order to find the answer to this question you need to use the slope formula, substitute, subtract, and simplify if needed.

(9,5),(4,1) = (x^1,y^1), (x^2,y^2)

m = \frac{y^2-y^1}{x^2-x^1} = \frac{9-1}{4-5}

9-1=8

4-5=-1

= -8

Hope this helps.

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Terrance spent one fourth of his money on music he downloaded. He then gives 15 to charity. He spent half of what he had remaini
Aleks04 [339]
Work backwards..
30 helmet + 30 left = 60$
60 + 15 charity = 75$
75 + 25 music = 100$
8 0
3 years ago
Simplify.<br> (3x2 + 2x + 7x3) + (10x2 + 6x + 9)
schepotkina [342]

Answer:

7 x 3 + 13 x 2 + 8 x + 9

Step-by-step explanation:

7 0
4 years ago
Frank currently rents an
hammer [34]

9514 1404 393

Answer:

  • monthly payment $690.25
  • total interest $123,490
  • total repaid $248.490
  • difference from rent $9.75

Step-by-step explanation:

Frank's monthly payment will be $690.25.

The total of all payments will be $690.25 × 360 = $248,490.00.

The interest Frank will pay is $248,490 -125,000 = $123,490.00.

The difference between Frank's rent and his loan payment is ...

   $700 -690.25 = $9.75

6 0
3 years ago
Using Cramer’s Rule, what is the value of y in the system of linear equations below?
Vadim26 [7]

for the system of equations

a_1x+b_1y=c_1 \\a_2x+b_2y=c_2

the three matrices needed to use Cramer's Rule are:

D=\left[\begin{array}{cc}a_1&b_1\\a_2&b_2\end{array}\right] \\\\D_x=\left[\begin{array}{cc}c_1&b_1\\c_2&b_2\end{array}\right] \\\\D_y=\left[\begin{array}{cc}a_1&c_1\\a_2&c_2\end{array}\right].

To use Cramer's Rule we have to calculate the three determinants listed below of the matrices listed below.

D=\left[\begin{array}{cc}2&5\\-3&-2\end{array}\right] \\\\D_x=\left[\begin{array}{cc}-13&5\\3&-2\end{array}\right] \\\\D_y=\left[\begin{array}{cc}2&-13\\-3&3\end{array}\right] .

The value of the determinants are shown below.

det(D)=(2)(-2)-(-3)(5)=-4+15=11\\det(D_x)=(-13)(-2)-(3)(5)=26-15=11\\det(D_y)=(2)(3)-(-3)(-13)=6-39=-33\\

The value of y is \frac{det(D_y)}{det(D)}=-\frac{33}{11} =-3..

3 0
4 years ago
Using Figure 4, complete these functions.
otez555 [7]

Answer:

  • D. 21/29

Step-by-step explanation:

<u>Formulas used:</u>

  • sin θ = sin (180 - θ)
  • sin θ = opposite/hypotenuse

<u>Opposite:</u>

  • y- coordinate of given point = 21

<u>Hypotenuse:</u>

  • √x²+y² = √20²+21²= √841 = 29

<u>Then</u>

  • sin θ = 21/29

Correct choice is D

7 0
3 years ago
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