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babunello [35]
3 years ago
8

Which expression is equivalent to 16a−18b+20a

Mathematics
2 answers:
Alja [10]3 years ago
7 0

Answer:

(16a+20a)-18b

=36a-18b

Step-by-step explanation:

victus00 [196]3 years ago
6 0

Answer:

2a - b

Step-by-step explanation:

First combine like terms.

(16a + 20a) - 18b

36a - 18b

This can be simplified by dividing the expression by 18

\frac{36a}{18} - \frac{18b}{18}

2a - b

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Dina has a number cube that she uses for a game. The number cube has the shape of a triangular pyramid, with 4 faces numbered 1
yaroslaw [1]

Answer:

A) The relative frequencies in the table are reasonably close; C) The relative frequency of rolling an even number is 0.51.

Step-by-step explanation:

The relative frequencies given are at most 0.02 apart.  This means they are reasonably close.

The theoretical probability for each outcome would be 1/4, or 0.25; this means the theoretical probability of rolling an even number would be 0.50, not 0.51.

However, the relative frequency of rolling an even number would be 0.24+0.27 = 0.51.

Since the relative frequencies are reasonably close, the number cube is likely to be fair.

6 0
3 years ago
Read 2 more answers
I’m confused can ya help me
Harlamova29_29 [7]

Answer:

C & D

Step-by-step explanation:

x² + 3x - 3 = 0

a = co efficient of  x² = 1

b=  co efficient of x = 3

c = constant = -3

roots = (-b ± \sqrt{b-4ac})/2a

    = (-3±\sqrt{3^{2}-4*1*[-3]} )/2*1

    = (-3±\sqrt{9+12})/2

    = (-3±√21)/2

  x = \frac{-3+\sqrt{21}}{2}     ; x =\frac{-3-\sqrt{21}}{2}

7 0
3 years ago
How many unit cubes will fit in the rectangular prism? <br> A) 9 B) 36 C) 40 D) 45
antiseptic1488 [7]

Answer:

D) 45

Step-by-step explanation:

5 x 3 x 3 = 45

8 0
2 years ago
This is confusing I need help pls
DIA [1.3K]

The answer to your question is 42

4 0
3 years ago
Which are true of the function f(x) = 49(1/7)^x Check all that apply.
Karolina [17]

The given function is : y= f(x) =49 [\frac{1}{7}]^x

The statements which are true regarding this function is  

1. As you can observe that y is defined for all values of x , so Domain is set of all values that x can take which is set of all real numbers.

2. Also, x =\frac {\log[\frac{y}{49}]}{-\log7}, so x is defined for all values of y. Range is all values that y can take which is also set of all real numbers greater than zero, i.e y>0.

As ,x =0 then y= 49 and x_{1} =1 then y_{1}  = 7,

so ,y_{1} = \frac{y}{7}.

So, Option (1),(4) and (5) are correct.

8 0
3 years ago
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