3 years ago

Help pleaseee i cant

Mathematics

1 answer:

maw [93]3 years ago

8 0

how are you today

Step-by-step explanation:

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Subtract the following polynomials, then place the answer in the proper location on the grid.

Grace [21]

(3m - 4n - 7) - (8m + n - 6)

3m - 8m = - 5m
-4n - n = -5n
-7 - (-6) = -7 + 6 = -1

-5m - 5n - 1 is your answer

hope this helps

8 0

3 years ago

(√0,04-√(-1,2)²+√121)×√81

Semenov [28]

Answer: 90

Step-by-step explanation:

$\displaystyle\ \Large \boldsymbol{} (\sqrt{0,04}-\sqrt{(-1,2)^2}+\sqrt{121 } ) \cdot \sqrt{81} = \\\\\\(0,2-1,2+11)\cdot 9=(11-1)\cdot 9=90$

6 0

3 years ago

What is the area of this triangle? A=bh2 17 m² 30 m² 60 m² 120 m²

e-lub [12.9K]

A = 1/2 x bh
A = 1/2 x 5 x 12
A = 6 x 5
A = 30m

6 0

3 years ago

Read 2 more answers

Simply the imaginary number square root -45

Paraphin [41]

Answer:

3i $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

and $\sqrt{-1}$ = i

Given

$\sqrt{-45}$

= $\sqrt{9(5)(-1)}$

= $\sqrt{9}$ × $\sqrt{5}$ × $\sqrt{-1}$

= 3 × $\sqrt{5}$ × i

= 3i $\sqrt{5}$

6 0

3 years ago

-8h+z/7 Use z=21 and h=4

Klio2033 [76]

Answer:

Hope this helps

Step-by-step explanation:

7 0

3 years ago