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anyanavicka [17]
4 years ago
6

(8b^3 − 6 + 3b^4 ) − (b^4 − 7b^3 − 3) =

Mathematics
1 answer:
Scrat [10]4 years ago
3 0

Answer:

2b^4 + 15b^3 - 3

Step-by-step explanation:

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Help me urgent pleasses
Natali5045456 [20]

Answer:

192

Step-by-step explanation:

No of chocolates bought =3*48 +2*24

=192

8 0
3 years ago
Tom determines the system of equations below has two solutions, one of which is located at the vertex of the parabola. equation
BabaBlast [244]
Y = ( x - 3 )² + 4
Vertex of the parabola:  ( 3, 4 )
y = - x + b
4 = - 3 + b
b = 7
Equation 2: y = - x + 7
( x - 3 )² + 4 = - x + 7
x² - 6 x + 9 + 4 = - x + 7
x² - 5 x + 6 = 0
x - 2 x - 3 x + 6 = 0
x ( x - 2 ) - 3 ( x - 2 ) = 0
( x - 2 ) ( x - 3 ) = 0
x 1 = 2,  x 2 = 3
y 1 = 5,  y 2 = 4
5 0
3 years ago
Suppose that you are interested in estimating the average impact a job training program has on wages. After controlling for obse
Ede4ka [16]

Answer:

False

Step-by-step explanation:

From the question we are told that

The coefficient for the training is r   =  0.55

The standard error is SE  =  1.06

The confidence level is 95%

Generally the level of significant is mathematically represented as

\alpha  =( 100 -95)\%

=> \alpha  = 0.05

Generally the critical value of \alpha  = 0.05 obtained from the normal distribution table is Z_{0.05} =  1.645

Generally the test statistics is mathematically represented as

t  =  \frac{r }{SE}

=> t  =  \frac{0.55}{1.06}

=> t  =  0.5189

Generally given that the t <  Z_{\alpha }

Hence  there is no sufficient evidence to conclude that the program has a positive and statistically significant impact on wages at a 95% confidence level.

So the answer is False

3 0
4 years ago
What is the distance between point a (1,4) and b (-2,-3)
avanturin [10]
The answer you are looking for is 5.
7 0
3 years ago
Read 2 more answers
Richard is frustrated. He knows the line to the right should have a 3 and a 4 in the equation but he can't remember if it is y =
Alisiya [41]

Answer:

The correct equation is "y=4x+3"

Step-by-step explanation:

Given equation:

y= 4x+3 \ \ or \ \ y=3x+4

As per the given line formula:

\to y=mx+c

The slope(m) of the line is \frac{4}{1} = 4  and y-intercept at 3, that is the point (c). So, the correct equation of the line:   y = 4x + 3

7 0
3 years ago
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