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docker41 [41]
3 years ago
13

3x -y= -1 + -3x + 3y= 27

Mathematics
1 answer:
schepotkina [342]3 years ago
8 0

Answer:

Answer:

y = 13

Explanation:

You want to add the like variables:

  (3x - y) = -1

+(-3x +3y) = 27

The x's cancel out:

2y = 26

Divide by 2 on both sides to get the y by itself and solve for y

y = 13

Step-by-step explanation:

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Estimate 6.1 DIVIDED 8
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<span>Estimate 6.1 DIVIDED 8
When you say estimate, meaning you have to round off the decimal to its nearest whole number to solve it easily 
=> 6.1 = 6
=> 6  / 8 = 0.75 is the quotient of the given equation.</span>
4 0
3 years ago
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Lisa, Juan and isaac equally shared 1/2 of a cake which fraction of the whole cake did each of them recieve
IgorLugansk [536]

Answer:

Each will receive \frac{1}{6}th of the cake.

Step-by-step explanation:

Let the amount of cake = c

Lisa, Juan and Isaac are the persons who are sharing half of a cake equally.

Number of persons = 3

Part of the cake shared = \frac{c}{2}

Fraction of the cake shared by each = \frac{\text{Amount of cake shared}}{\text{Number of persons who shared}}

                                                             = \frac{\frac{1}{2}c}{3}

                                                             = \frac{1}{6}c

Therefore, fraction of total cake shared by each member will be \frac{1}{6} of the total amount of cake.

6 0
2 years ago
(a) Use Euler's method with step size 0.2 to estimate y(1.4), where y(x) is the solution of the initial-value problem y' = 3x −
Archy [21]

Answer:

Step-by-step explanation:

5 0
2 years ago
the perimeter of the rectangle is 86 inches. if the length is 3 inches longer that the width, find the width of a rectangle.
yawa3891 [41]
The length is 23in and the width is 20 inches
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3 years ago
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Newly purchased tires of a particular type are supposed to be filled to a pressure of 30 psi. Let m denote the true average pres
dimulka [17.4K]

Answer:

a) 48.21 %

b) 45.99 %

c) 20.88 %

d) 42.07 %

e) 50 %

Note: these values represent differences between z values and the mean

Step-by-step explanation:

The test to carry out is:

Null hypothesis  H₀    is                           μ₀ = 30  

The alternative hypothesis                      m  ≠ 30

In which we already have the value of z for each case therefore we look  directly the probability in z table and carefully take into account that we had been asked for differences from the mean (0.5)

a)  z = 2.1   correspond to  0.9821  but mean value is ubicated at 0.5 then we subtract    0.9821 - 0.5  and get 0.4821   or 48.21 %

b)  z = -1.75   P(m) = 0.0401     That implies the probability of m being from that point p to the end of the tail, the difference between this point and the mean so 0.5 - 0.0401 = 0.4599 or 45.99 %

c)  z = -.55    P(m) = 0.2912    and this value  for same reason as before is 0.5 - 0.2912 = 0.2088  or 20.88 %

d)  z = 1.41     P(m) = 0.9207    0.9207 -0.5     0.4207  or  42.07 %

e)  z = -5.3   P(m) = 0    meaning there is not such value in z table is too small to compute  and difference to mean value will be 0.5  

d)  z= 1.41      P(m) =

4 0
2 years ago
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