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BabaBlast [244]
2 years ago
14

Solye for r. r - 4.5 < 11

Mathematics
1 answer:
Anarel [89]2 years ago
5 0

Answer:

r < 15.5

Step-by-step explanation:

r - 4.5 < 11

  + 4.5   + 4.5

r < 15.5

r can be any number less than 15.5

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What is 2y^3 when y=4
aliina [53]
Plug the y value in
2(4)^3

Evaluate exponents first (order of operations)
2(64)

Multiply
128

Final answer: 128
8 0
3 years ago
Add 3.2 + (-0.8)
Nataliya [291]

Answer:

It's 64354.4 and I hope that's it .

6 0
3 years ago
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What is the sST for the data set (1, 5), (2, 8), (4, 14)?<br><br> 14<br> 42<br> 25<br> 9
ohaa [14]

Answer:

42

Step-by-step explanation:

SST = ∑ ( y − ¯ y ) ² (¯ y = mean of y values)

¯ y = (5+8+14)/3 = 27/3 = 9

∑ ( y − ¯ y ) ² =  ( 5 − 9 ) ² +  ( 8 − 9 ) ² +  ( 14 −9 ) ²

=  (  − 4 ) ² +  (  − 1 ) ² +  ( 5 ) ²

= 16 + 1 + 25

= 42

7 0
3 years ago
What is the product of 2x - 5 and 3x2 + 5x - 7? Write your answer in standard form.
Orlov [11]

Answer:

(2x - 5 ) (3x^2 + 5x - 7) = 6x^3 - 5x^2 - 39x - 35

The product of 2x – 5 and 3x2 + 5x - 7equal to the product of 5x - 2 and 3x2 + 5x - 7 are not equal.

Step-by-step explanation:

Product means multiplication

Product of 2x - 5 and 3x^2 + 5x - 7

(2x - 5 ) (3x^2 + 5x - 7)

= 6x^3 + 10x^2 - 14x - 15x^2 - 25x - 35

Collect like terms

= 6x^3 + 10x^2 - 15x^2 - 14x - 25x - 35

= 6x^3 - 5x^2 - 39x - 35

Product of 5x - 2 and 3x^2 + 5x - 7

(5x - 2) (3x^2 + 5x - 7)

= 15x^3 + 25x^2 - 35x - 6x^2 - 10x + 14

Collect like terms

= 15x^3 + 25x^2 - 6x^2 - 35x - 10x + 14

= 15x^3 + 19x^2 - 45x + 14

The product of 2x – 5 and 3x^2 + 5x - 7equal to the product of 5x - 2 and 3x^2 + 5x - 7 are not equal.

They both consist of different variables in their multiplier

8 0
3 years ago
What is the midpoint of line segment AB?
Elza [17]

Answer

Midpoint = (3, 5.5)

Step by step explanation

Here we have to use the midpoint formula.

Midpoint = ( \frac{x1 + x2}{2} , \frac{y1 + y2}{2} \\)

Here the point A = (-1, 8) and B = (7, 3)

x1 = -1, y1 = 8, x2 = 7 and y2 = 3

Now plug in these values into the formula.

Midpoint = (\frac{-1 + 7}{2} , \frac{8 + 3}{2}

= (6/2, 11/2)

= (3, 5.5)

Therefore, the midpoint the line segment AB is (3, 5.5)

Thank you.


8 0
3 years ago
Read 2 more answers
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