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bazaltina [42]
3 years ago
5

If x is equal to 50 and y is equal to 8 then what is the value of x - 7y?

Mathematics
2 answers:
Studentka2010 [4]3 years ago
8 0

35 i think.

cause when x is = 50 and y = 8, 7+8 = 15.

50 - 15 = 35.

sorry if wrong.

sesenic [268]3 years ago
4 0

Answer.

5x+7y=50

Step-by-step explanation:

7y=5x-50

y=(5x-50)/7

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If D is the center of the circle below and AC measures 48, what is the measure of ABC
dimulka [17.4K]

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How do we know that a circle must complete up to 180, then we have to:

180 - 48 = 132

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4 0
2 years ago
A famous Premier-league footballer was quoted on Match of the Day to have a goal-scoring statistic of 0.36
stepan [7]

Answer:

13a.\  The \ probability\ of \ scoring\ a\  goal\  in\  a\  game\  is\  0.36\\\\b. 3 \ games

14.

a. \ \£90\\b. \ 26 \ weeks\\c. \ \£4,860

15. This is not possible since p(yellow)=0.10 which is less than the stated 0.35

Step-by-step explanation:

13 a. -A goal-scoring statistic is the probability of a player scoring one goal in any given game played.

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b. To determine the number of games it takes to score a whole goal, we divide the probability by 1 goal:

Games=\frac{1 \ game}{p(goal)}\\\\=\frac{1}{0.36}\\\\=2.778\approx 3

Hence, it takes approximately 3 games to score a full goal.

14.-The cost of a GCSE retake is £600 and attracts a 15% deposit

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C_g=0.15\times 600\\\\=\£90

Hence, the 15%  deposit amount equals £90

b.#The student pays the balance in a £20 per week scheme,the total number of weeks is calculated as:

t=\frac{Balance}{Rate}\\\\=\frac{600-90}{20}\\\\=\frac{510}{20}\\\\=25.5\approx 26

Hence, it takes 26 weeks to clear the balance.

c. Given that 10% is the equivalent of £450

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100\%=\frac{540}{0.1}\\\\=\£5400

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=540\times 10\\\\=\£5400

We subtract the discount amount for the per-discount price:

Cost=Total -discount\\\\=5400-540\\\\=\£4860

Hence, it will cost £4,860 without the discount.

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7 0
3 years ago
2x-y-3z=7, 3x+y+=10, 5x+y+2z=15
rosijanka [135]
Y 50 I think it is I am not to sure
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