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Nat2105 [25]
3 years ago
12

Reasoning Solve the system of linear equations using substitution. Use pencil and paper. Which expression would be easier to sub

stitute into the other​ equation, in order to solve this​ problem? Explain your reasoning. x = 4y - 2 x + 4y =7
Mathematics
2 answers:
viktelen [127]3 years ago
6 0

Answer:

yes

Step-by-step explanation:

spin [16.1K]3 years ago
5 0

Answer:

x = 5 /2 , y = 9 / 8

Step-by-step explanation:

x = 4y - 2 ....... (i)

x + 4y =7 ....... (ii)

Substituting eqn  (i) into eqn (ii);

(4y - 2 ) + 4y = 7

4y - 2 + 4y = 7

8y = 7 + 2 = 9

y = 9 / 8

substitute y = 9 / 8 in eqn (i)

x = 4 (9 / 8) - 2

x = 9 / 2   -   2

x = (9 - 4 ) / 2

x = 5 / 2

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Westkost [7]

Answer:

Step-by-step explanation:

Let x be the random variable. Since it is normally distributed and the population mean and population standard deviation are known, we would apply the formula,

z = (x - µ)/σ

Where

x = sample mean

µ = population mean

σ = standard deviation

From the information given,

µ = 474

σ = 32

x = 514

The probability of being below 514 is expressed as P(x < 514)

For x = 514,

z = (514 - 474)/32 = 1.25

Looking at the normal distribution table, the probability value corresponding to area below the z score is 0.89

Therefore,

P(x < 514) = 0.89

5 0
3 years ago
Someone please help me with this question
Lyrx [107]

Answer: Neither

Step-by-step explanation:

It is not an angle of the quadrilateral, so it is not an interior angle.

It does not form a linear pair with any interior angle of the quadrilateral, so it is not an exterior angle.

6 0
2 years ago
Solve each equation<br> (This is a fraction)<br> 6/11 = r/11
Mashutka [201]

Answer:

r=6

Step-by-step explanation:

6/11=r/11

cross product

11*r=6*11

11r=66

r=66/11

r=6

7 0
3 years ago
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andrew-mc [135]

Answer:

the second one

Step-by-step explanation:

because g(x) and f(x) is bout the same

6 0
4 years ago
what are the x- and y- coordinates of point C, which partitions the directed line segment from A to B into the ratio 5:8? Round
Ede4ka [16]

Answer:

(1.2, –4.7) hope this helps lol

4 0
3 years ago
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