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DerKrebs [107]
3 years ago
6

7x+2y=24 8x+2y=30 can someone show the work.

Mathematics
2 answers:
ahrayia [7]3 years ago
7 0
Well 
8x+2y=30 X&Y would both be 3 because 8*3=24 and 2*3=6 so it turns into 24+6=30 

The first one I'm not sure on sorry.
marissa [1.9K]3 years ago
4 0
Notice that both equations contain + 2y  so if we subtract  the first equation form the second we get:-

8x - 7x + 2y - 2y = 30 - 24

x = 6 

Now to find the value of y we substitute for x in the first equation.

7(6) + 2y = 24
2y = 24 - 42
2y = -18
y = -9 

So the solution  to the system of equations is  x = 6 , y = -9 (answer)

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On a coordinate plane, which point lies on the y-axis? A) (6, 6) B) (0, 6) C) (6, 0) D) (6, 6)
bezimeni [28]

Answer:

<h2>B) (0, 6)</h2>

Step-by-step explanation:

If the point lies on the y-axis then the first coordinate of the point is equal 0.

(0, y) - y is any real number.

5 0
3 years ago
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the scale of a tower to its scale model is 1 meter 5cm . if the tower is 6 meters by 20 meters what are the dimensions of the sc
nikklg [1K]
1 m = 5 cm

6 m = 6 * 5 = 30 cm
20 m = 20 * 5 = 100 cm

dimensions are : 30 cm by 100 cm
8 0
3 years ago
The table shows the price of apples in the local market. What is the cost of 12 pounds of apples? Apples (pounds) Price (dollars
MAXImum [283]
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cost :     6, 12, ?, 24

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5 0
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Find the length of segment ST <br> A) 74 units <br> B) 12 units <br> C) 10 units <br> D) 74 units
vodomira [7]
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4 0
4 years ago
Can u guys answer my question 13 and 14 pls
Alika [10]

Answer:

√2=1.414

then :√8 +2√32 +3√128+4√50

√8=√2³ =2√2

2√32=√2^5 = 4*2√2 = 8√2

3√128 = 3√2^6*2=8*3√2 =24√2

4√50 =4√5²*2= 20√2

add results : 2√2+8√2 +24√2+20√2=54√2

<h2>54√2=54×1.414=76.356 ( it is not in the options)</h2>

x=7-4√3

√x+ 1/√x

√(7-4√3) +1/√(7-4√3) =

(8-4√3)/√(7-4√3)

(8-6.93)/√(7-6.93) = 4 ( after rounded to the nearest whole number)

4 is your answer

3 0
3 years ago
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