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Ber [7]
3 years ago
12

1) 4x - 5y = -22 -2x + 5y = 26

Mathematics
2 answers:
taurus [48]3 years ago
7 0
Point form:
(2,6)

Equation form:
X=2, y=6
PolarNik [594]3 years ago
5 0
Answer:

X=2


Explanation: simultaneous equations
4x-5y=-22.....1

-2x+5y=26.....2

Add equation 2 to equation 1

2x=4

Divide both sides by two

X=2
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Write an equation of the line through (3,-5) and perpendicular to 3y=x-6
Alona [7]
3y = x - 6
y = 1/3x - 2. 
slope her is 1/3. A perpendicular line will have anegative reciprocal slope. To find the negative reciprocal of a number, u flip the number and change the sign. So the slope we need os -3/1 or just -3.(see how I flipped the slope and changed the sign)

y = mx + b
slope(m) = -3
(3,-5)...x = 3 and y = -5
now we sub and find b, the y int
-5 = -3(3) + b
-5 = -9 + b
-5 + 9 = b
4 = b

so ur perpendicular equation is : y = -3x + 4
3 0
3 years ago
$9500 is invested, part of it at 11% and part of it at 8%. For a certain year, the total yield is $937.00. How much was invested
netineya [11]

Answer:

5900 at 11%

3600 at 8%

Step-by-step explanation:

x= invested at 11%

y= invested at 8%

x+y=9500

.11x+.08y=937

Mulitply the first equation by .11

.11x+.11y= 1045

Subtract this and the second equation

(.11x+.11y)-(.11x+.08y)=1045-937

.03y=108

y=3600

SOlve for x

x+3600=9500

x=5900

8 0
3 years ago
Please help worth a lot
KonstantinChe [14]

Answer:

(-2, -3)

Step-by-step explanation:

when its relected its just flipping over the horizontal axis (x-axis) so in turn that is the answer! :) hope this helped you

6 0
3 years ago
At the end of the race every child drank a 16 fluid ounce bottle of water.if 15 children were in the race ,how many quarts of wa
Harlamova29_29 [7]

7.5 quarts

16*15=240 fluid ounces when you take 240 and divide it by 32 you get 7 quarts and 16 fluid ounces

5 0
4 years ago
90 POINTS WILL GIVE BRAINLIEST for which value of theta is cot theta equal to cos theta
Angelina_Jolie [31]

Answer:

...so cos t = cot t can only happen when cos t is 0 or sin t is 1. (But sin t = 1 only happens when cos t = 0, so cos t = 0 is enough.)  

arccos(0) is pi/2, plus or minus any multiple of pi.

Step-by-step explanation:

 

cotθ = cosθ  

cosθ/sinθ = cosθ  

sinθ = 1  

θ = π/2

pi also = to 3.14 etc.

3 0
3 years ago
Read 2 more answers
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