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mars1129 [50]
2 years ago
7

Practice Set 1.4 by 1. Solve the following simultaneous equations. 2 3 (1) 8 5 15 ; -+-= = 77 = ху + x y er's 15 5 () (2) 10 2.

-=4 ; x+y x- y = -2 x+y x-y 27 31 (3) + = 85 ; 31 27 + = 89 x- 2y+3 x- 2y+3 (4) 1 1 3 3x + y 3x - y 4 + II 1 1 2(3x + y) 2(3.x - y) 8 19​
Mathematics
2 answers:
ale4655 [162]2 years ago
8 0

Answer:

que?

SEIKŌ O DAMARE!!

ANATA WA WATASHI

Goshia [24]2 years ago
3 0

Answer:

wow are fan of Lisa from BLACKPINK

NICE

I TOO LIKE HER

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Find intercepts of: 3x-3y+9=0 <br> X-intercept as a ordered pair<br> Y-intercept as a ordered pairr
ahrayia [7]
3x - 3y + 9 = 0

The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates of (0, b). It is also the value of y when x = 0.

To solve for the y-intercept, set x = 0:

3(0) - 3y + 9 = 0
3(0) - 3y + 9 = 0

Subtract 9 from both sides:
- 3y + 9 - 9 = 0 - 9
- 3y = -9
Divide both sides by -3 to solve for y:

-3y/-3 = -9/-3
y = 3

Therefore, the y-intercept is (0, 3).

The x-intercept is the point on the graph where it crosses the x-axis, and has coordinates of (a, 0). It is also the value of x when y = 0.

To solve for the x-intercept, set y = 0:

3x - 3(0)+ 9 = 0
3x -0 + 9 = 0

Subtract 9 from both sides:
3x + 9 - 9 = 0 - 9
3x = -9

Divide both sides by 3 to solve for x:

3x/3 = -9/3
x = -3

Therefore, the x-intercept is (-3,0).

The correct answers are:
Y-intercept = (0, 3)
X-intercept = (-3, 0)
7 0
2 years ago
20a+12a-8 simplified
bixtya [17]

That would 32a - 8, Good Luck!

7 0
3 years ago
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A train leaves a train station at 1 p.m. it travels at an average rate of 60 mi/hr. a high-speed train leaves the same station a
aleksklad [387]
The second train will catch up with the first train in 1.6 hours
7 0
3 years ago
30 \div \frac{1}{3} 30÷ 3 1 ​
ioda

Answer:

<h2>90</h2>

Step-by-step explanation:

30 \div \frac{1}{3} \\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:30=\frac{30}{1}\\=\frac{30}{1}\div \frac{1}{3}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\=\frac{30}{1}\times \frac{3}{1}\\\\\mathrm{Apply\:rule}\:\frac{a}{1}=a\\=30\times \:3\\\\=90

7 0
3 years ago
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Photo Necessities produces camera
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Answer:

A graphing calculator can do quadratic regression on the given points. It tells you the cost function is

.. c(x) = (1/2)x^2 +8x +10

Then c(12) = 178

The cost function predicts the total cost of producing 12 camera cases is $178.

Step-by-step explanation:

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