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Veronika [31]
2 years ago
10

When y=3 and x= 1/2 1.4(2y-4x)-1= 2. 4x^2+2y^3-10= 3.4(x^+1)+2x+3y=

Mathematics
1 answer:
Olegator [25]2 years ago
6 0

Answer:

1. 15

2. 45

3. There is a missing digit.

Step-by-step explanation:

Given:  <u>y=3</u> and <u>x= 1/2</u>

<h2>Question 1: 4(2y-4x)-1=</h2>
  • Numerical factors in this term have been multiplied.

4(6-4/2)-1

  • We can reduce this fraction by dividing both numerator and denominator by a common numeric factors.

4(6-2)-1

  • Numerical terms in this expression have been added.

4*4-1

  • Numerical factors in this term have been multiplied.

16-1

  • Numerical terms in this expression have been added.

15

<h2>Question 2: 4x^2+2y^3-10 = </h2>

4/2²2*27-10

4/2²+54-10

  • We need to perform a multiplication.
  • The following rule is applied:
  • \frac{A}{B} C=\frac{AC}{B}

45: Numerical factors in this term have been multiplied.

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Gavyn and Alex win some money and share it in the ratio 4:1. Gavyn gets £18 more than Alex. How much did they get altogether?
densk [106]

Answer:

£30

Step-by-step explanation:

Gavyn has £18 more than Alex

—› G - A = £18

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1u = £18 ÷ 3

= £6

total units = 4 + 1 = 5

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3 0
3 years ago
The scores on the entrance exam at a well-known, exclusive law school are normally distributed with a mean score of 200 and a st
ruslelena [56]

Answer:

the lowest passing score would be x = 298

Step-by-step explanation:

School wishes that only 2.5 percent of students taking test pass

We are given

mean= 200,

standard deviation = 50

We need to find x

The area under the curve can be found by:

2.5 % = 0.025

So, 1- 0.025 = 0.975

We need to find the value of z for which the answer is 0.975

Looking at the z-score table, the value of z is: 1.96

Now, using the formula:

z = x - mean/standard deviation

1.96 = x - 200/50

=> 1.96 * 50 = x-200

98 = x - 200

=> x = 200+98

x = 298

So, the lowest passing score would be x = 298

8 0
3 years ago
GIVING BRAINLIEST AND THE REST OF MY POINTS, PLS HELP!!!! :((
Nataly_w [17]

Answer:

The correct line plot is choice C.

Step-by-step explanation:

If you look at the data values, you'll notice that there are three 11\frac{1}{4}, and the only line plot that depicts this is choice C, so that is the correct answer.

7 0
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The linear combination method is applied to a system of equations as shown.
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D is the answer to the question
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Bond [772]

Answer: look at the picture

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