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Elden [556K]
3 years ago
8

9. What is the value to the solution for the system of equations y = -5X-9 and y = 2x + 5.​

Mathematics
1 answer:
sertanlavr [38]3 years ago
5 0

9514 1404 393

Answer:

  (x, y) = (-2, 1)

Step-by-step explanation:

Equate the two expressions for y.

  -5x -9 = 2x +5

  -14 = 7x . . . . . . . .add 5x-5

  -2 = x . . . . . . . . . divide by 7

Then ...

  y = 2(-2) +5 = 1

The solution is (x, y) = (-2, 1).

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7: Jikayla earns $19 per hour babysitting. Last week, she worked 7 hours on Monday, 6 hours on Tuesday, and 7 hours on Wednesday
____ [38]

Answer:

$475

Step-by-step explanation:

7+6+7+5 = 25

25*19 = 475

6 0
4 years ago
What is the range of the function: {(1, 3); (3, 5); (5, 7); (7, 9)}?                                     A. {1, 3, 5, 7}        
IRISSAK [1]
\{(1;\ \underline{3});\ (3;\ \underline{5});\ (5;\ \underline{7});\ (7;\ \underline{9})\}\\\\Range\ of\ this\ function:\{3;\ 5;\ 7;\ 9\}\\\\Domain\ of\ this\ function:\{1;\ 3;\ 5;\ 7\}
5 0
3 years ago
Read 2 more answers
If Julia has 20 cupcakes, and 10 people eat one cupcake, how much cupcakes are left?
Feliz [49]
There are going to be 10 cupcakes left,hope I helped (:
8 0
3 years ago
Read 2 more answers
Math:
Dahasolnce [82]

Answer:

a) x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}, x_{2} = \frac{5\pi}{6}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}, b) x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}, x_{2} = \frac{5\pi}{3}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}

Step-by-step explanation:

a) The equation must be rearranged into a form with one fundamental trigonometric function first:

\sqrt{3}\cdot \csc x - 2 = 0

\sqrt{3} \cdot \left(\frac{1}{\sin x} \right) - 2 = 0

\sqrt{3} - 2\cdot \sin x = 0

\sin x = \frac{\sqrt{3}}{2}

x = \sin^{-1} \frac{\sqrt{3}}{2}

Value of x is contained in the following sets of solutions:

x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}

x_{2} = \frac{5\pi}{6}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}

b) The equation must be simplified first:

\cos x + 1 = - \cos x

2\cdot \cos x = -1

\cos x = -\frac{1}{2}

x = \cos^{-1} \left(-\frac{1}{2} \right)

Value of x is contained in the following sets of solutions:

x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}

x_{2} = \frac{5\pi}{3}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}

7 0
3 years ago
Yen has 25 dimes she gives the same number of dimes to each of her 5 children how many dimes will each receive?
Brums [2.3K]
Each child will get 5 dimes.
25 ÷ 5 = 5
4 0
4 years ago
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