1. 12 + (-7) How do you do dis

Mathematics

2 answers:

nata0808 [166]3 years ago

7 0

Answer:

Step-by-step explanation:

subtract 12 and 7 which will give you 5

Julli [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Think of it kind of like 12 - 7

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What is the T.A. = and V =

chubhunter [2.5K]

The formula of the area of the equilateral triangle:
$A_\Delta=\dfrac{a^2\sqrt3}{4}\\\\a=3\to A_\Delta=\dfrac{3^2\sqrt3}{4}=\dfrac{9\sqrt3}{4}$

The formula of the area of the rectangle:
$A=width\times length=wl\\\\w=3;\ l=6\\\\A=3\cdot6=18$

$T.A.=2A_\Delta+3A\\\\T.A.=2\cdot\dfrac{9\sqrt3}{4}+3\cdot18=\dfrac{9\sqrt3}{2}+54=(54+4.5\sqrt3)\ in^2$
The formula of the volume of the triangular prism:
$V=A_\Delta\cdot l\\\\V=\dfrac{9\sqrt3}{4}\cdot6=\dfrac{9\sqrt3}{2}\cdot3=\dfrac{27\sqrt3}{2}=13.5\sqrt3\ in^3$

8 0

3 years ago

5 - 3tan3x = 0 trên -π< x < π.

Lelu [443]

Step-by-step explanation:

the answer is In photo above