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Fudgin [204]
2 years ago
13

What is 3x²-2 if x is -3

Mathematics
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

Step-by-step explanation:

3x² -2 =3*(-3)²-2=3*9 - 2

         = 27 - 2

        = 25

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Savannah is 24 years older than Ryan, while Sebastian is 5 times as old as Ryan. If Savannah and Sebastian are twins, which equa
IRISSAK [1]

Answer: I think the answer would be b) 24+2x=5x

sry if it's wrong


3 0
3 years ago
What is the volume of this pyramid?<br><br> • 7560 cm³<br> • 5040 cm³<br> • 2520 cm³<br> • 1728 cm³
gavmur [86]

Answer:

Volume = 2520 cm^3.

Step-by-step explanation:

The volume of a pyramid = 1/3 * area of the base * height.

The base of this pyramid is a triangle and its area

= 1/2 * 18 * 24 cm^2 so the volume of the pyramid is:

1/3 * 1/2 * 18 * 24 * 35

= 2520 cm^3.

6 0
3 years ago
Find the percent of change from the first value to the second. 72: 81 -
nordsb [41]

Answer:

+12.5%

Step-by-step explanation:

This is rather simple. Subtract 72 from 81, then put the difference over 72. Then, multiply that by 100.

(81 - 72)/72 * 100

<em>Subtract 72 from 81 to get 9</em>

9/72 * 100

<em>Multiply 9 by 100 to get 900</em>

900/72

<em>Simplify the above fraction by cancelling out 9.</em>

100/8

<em>Divide 100 by 8 to get 12.5%</em>

The percent of change is +12.5%

5 0
2 years ago
Help me please 2-4x=x+16
Elina [12.6K]
2-4x=x+16
-5x=13

x=-2.6
5 0
3 years ago
NEED TO SUBMIT NOW PLS HELPPP
kherson [118]

Answer: 40

Step-by-step explanation:

138/x = 207/60

8280 = 207x

divide by 207

40 = x

7 0
3 years ago
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