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djverab [1.8K]
3 years ago
12

​−x+4y=4 ​−x+3y=1 Is (8,3) a solution of the system A. Yes B. No

Mathematics
1 answer:
valkas [14]3 years ago
5 0
It has to be yes........
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Solve for all values of x by factoring.<br> x^2 + 4x – 30 = -3x
vichka [17]

Answer:

{x}^{2}  + 4x - 30 =  - 3x \\{x}^{2}  + 7x - 30 = 0 \\  {x}^{2}  - 3x + 10x - 30 = 0 \\ x(x - 3) + 10(x - 3) = 0 \\ (x - 3)(x + 10) = 0 \\  \boxed{x = 3} \\  \boxed{x =  - 10}

<h3><em><u>x=3 or x=-10</u></em> is the right answer.</h3>

7 0
3 years ago
A map of a town was made using a scale factor of 1 inch =1/2 mile. On the map, Sonja measures that her house is 3 inches away fr
NikAS [45]

Answer:

1.5 miles

Step-by-step explanation:

According to the scale, we can simply multiply the distance that Sonja measured on the map by the actual mile distance that it states on the scale (1/2 or 0.5) to calculate the actual distance between Sonja's house and Sal's house like so...

3 * 0.5 = 1.5 miles

Therefore, we can see now that there is a total actual distance of 1.5 miles between both of their houses, which is represented as 3 inches on the map.

3 0
3 years ago
PLZ help ASAP!!! I will mark Brainliest!
GuDViN [60]

Answer:

C

Step-by-step explanation:

x=60

60

60+30=90

60-30=30

60+90+30=180

6 0
3 years ago
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When trying to find the best deal for items, you should ____
kodGreya [7K]
Question 1:

All provided options would give the best deal on an item

Answer: Option d [all of the above]

Question 2:

When an item's price is knocked off by 15%, it means the item has only 85% of its original value left to pay. Hence, a discount of 15% means multiplying the original price by 85%

Answer: option C
6 0
3 years ago
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Find h(x) +g(x). h(x)=x^2+6x and g(x)=-2x-3
AURORKA [14]

Answer:

h(x) + g(x) = x^{2} + 4x - 3

Step-by-step explanation:

h(x) + g(x) = (x^{2} + 6x) + (-2x - 3)

x^{2} + 4x - 3

3 0
3 years ago
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