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pickupchik [31]
3 years ago
10

How many solutions does this system of equations have? Use either the substitution method or the elimination method. −2x + 4y =

4 x − 2y = 6 exactly one solution no solution infinitely many solutions
Mathematics
2 answers:
olganol [36]3 years ago
7 0
It has no solution so it is b
timama [110]3 years ago
4 0
No solution

-2x+4y=4
2(x-2y=6)

-2x+4y=4
2x-4y =12
0=16
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If photocopier is making reduce copies of a photo that measures 25 cm in height. The height of the first copy is 80% of the heig
tatyana61 [14]
25 x .80 = 20.00cm

25 x .85 = 21.25cm

PLEASE GIVE BRAINLIEST
5 0
3 years ago
if someone wants to buy something that costs $750.000 and it’s 35% off, how much does it costs after the discount?
Serggg [28]

Answer:487.5

Step-by-step explanation:

if it is a 35% discount it means you are trying to find 65% of the number because 65+35=100%

to find 65%, you find 5% first, then multiply by 13 to get 65%.

to find 5%, you divide by 20.

750/20=37.5.

37.5*13=487.5

7 0
2 years ago
Someone please tell formula
ivolga24 [154]

<u>Answer:</u>

(i) Total cost of the flat is Rs. 540000.

(ii) Expenditure incurred on labour is Rs. 150000

<u>Step-by-step explanation:</u>

According to the question, cement cost is Rs. 112500, which represents 75° in the pie chart.

(i) The total cost of the flat is represented by the total 360° in the pie chart.

∴ Using unitary method

75° represents Rs. 112500

⇒ 360° represents = \frac{112500}{75}  ×  360

                                = Rs. 540000

∴  Total cost of flat = Rs. 540000

(ii) Similarly, to calculate the cost of labour, represented by 100° in the pie chart, we can use the unitary method:

75° represents Rs. 112500

⇒ 100° represents =  \frac{112500}{75}  ×  100

                               = Rs. 150000

∴ Cost of labour = Rs. 150000

5 0
2 years ago
Lines AB and CD are parallel. If the measure of angle W equals 124 degrees, what is the measure of angle X?
mezya [45]

Answer:

56 degrees

Step-by-step explanation:

They are supplementary, so they add to 180. 180 - 124 = 56.

7 0
4 years ago
2. Confirm that 1+V5 and 1 - V5 are the correct roots for x2 – 2x – 4 = 0.
hoa [83]

Answer:

see explanation

Step-by-step explanation:

Given

x² - 2x - 4 = 0 ( add 4 to both sides )

x² - 2x = 4

To solve use the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 1)x + 1 = 4 + 1

(x - 1)² = 5 ( take the square root of both sides )

x - 1 = ± \sqrt{5} ( add 1 to both sides )

x = 1 ± \sqrt{5}, thus

x = 1 + \sqrt{5} or x = 1 - \sqrt{5}

5 0
3 years ago
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