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3 years ago

Expand the following 4 (x - 1)

Mathematics

2 answers:

RSB [31]3 years ago

7 0

Answer:

4x - 4

Step-by-step explanation:

4 × x = 4x

4 × -1 = -4

4x - 4

pantera1 [17]3 years ago

3 0

Answer:

4x-4

Step-by-step explanation:

4(x-1)
4*x-1*4
4x-4

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7 a. 49 b. 98 c. 12 14 I need the area!!

sp2606 [1]

Answer:

Step-by-step explanation:

The area of a triangle is

A = 1/2 bh

A = 1/2 (14)*7

A =49

3 0

2 years ago

Read 2 more answers

Pls help 4 100 points in geometry i will giv brainliest

dmitriy555 [2]

Answer:

a = 35

c = 85

Step-by-step explanation:

85 + 60 + a = 180 as they are all supplementary angles (together they form an angle of 180°)

therefore a = 35.

a + ( 180 -(a+85)) + c =180 (as the angles of a triangle add up to 180°. our triangle is NMT, the angles are a, c and 180°-(a+85°) for a theorem about lines secant to parallel lines)

therefore c = 85

7 0

2 years ago

Read 2 more answers

Simplify the following expression. 343 1/3 (Write your answer as an integer.)

aalyn [17]

343^1/3
=(7)^3*1/3 [ 3 and 3 are cancelled]
=7

4 0

3 years ago

Suppose the weights of the Boxers at this club are Normally distributed with a mean of 166 pounds and a standard deviation of 5.

lesya [120]

Answer:

0.1994 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 166 pounds

Standard Deviation, σ = 5.3 pounds

Sample size, n = 20

We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{5.3}{\sqrt{20}} = 1.1851$

P(sample of 20 boxers is more than 167 pounds)

$P( x > 167) = P( z > \displaystyle\frac{167 - 166}{1.1851}) = P(z > 0.8438)$

$= 1 - P(z \leq 0.8438)$

Calculation the value from standard normal z table, we have,

$P(x > 167) = 1 - 0.8006= 0.1994 = 19.94\%$

0.1994 is the probability that the mean weight of a random sample of 20 boxers is more than 167 pounds

3 0

2 years ago

What is the value of x? Also show work pls

drek231 [11]

Answer:

x = 34

Step-by-step explanation:

The angles are corresponding angles and corresponding angles are equal if the lines parallel

2x+3 = 71

Subtract 3 from each side

2x+3-3 = 71-3

2x = 68

Divide by 2

2x/2 = 68/2

x = 34

4 0

3 years ago