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jekas [21]
3 years ago
13

MathWiz wya? I need some help with this...show your work <3

Mathematics
1 answer:
Lady_Fox [76]3 years ago
4 0

Answer:

(4i+1)^2

4i^2 + 2(4i) + 1

16(-1) + 8i + 1

-15+8i

8i-15

(x+1) + (x-2)(x+3)

(x+1) + (x^2-2x+3x-6)

(x+1)+x^2+x-6

x+1+x^2+x-6

x^2+2x-5

Let me know if this helps!

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Find the length of the diagonal BD in the quadrilateral ABCD shown in the coordinate plane ?
Leno4ka [110]

bearing in mind B is at (4,3) and D is at (-2,-4).


\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ B(\stackrel{x_1}{4}~,~\stackrel{y_1}{3})\qquad D(\stackrel{x_2}{-2}~,~\stackrel{y_2}{-4})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ BD=\sqrt{(-2-4)^2+(-4-3)^2}\implies BD=\sqrt{(-6)^2+(-7)^2} \\\\\\ BD=\sqrt{36+49}\implies BD=\sqrt{85}

6 0
4 years ago
Read 2 more answers
A nursery owner buys 7 panes of glass to fix some damage to her greenhouse. The 7 panes cost
Kobotan [32]

Answer:

Its 6.45

Step-by-step explanation:

we first need to know how much is one pane of glass so i divide

15.05÷ 7 and got $2.15

so each one pane of glass is $2.15

than i multiply 2.15 x 3 and got 6.45

So the cost is 6.45

3 0
3 years ago
Please help!!!! *Middle school math*
kifflom [539]

Answer:

2,728‬ words

Step-by-step explanation:

So this is a basic multiplication problem, so we just multiply the only numbers there:

88 x 31 = 2,728‬

So Captain's Sea Stories has 2,728‬ words in total

hope this helps:)

8 0
3 years ago
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2018 copper penny struck at the Philadelphia mint in 1794 was sold for 345000 rate of return
vodomira [7]

Answer:

The rate of return is 8%.

Step-by-step explanation:

The time span from 1794 to 2018 is (2018 - 1794) = 224 years.

Now, a penny i.e. 0.01 pounds of money as a principal gets the final sum of 345000 pounds after 224 years.

Here we have to calculate the rate of return if the interest is compounded yearly.

Using the formula of compound interest of r% APR, we get

345000 = 0.01 (1 + \frac{r}{100})^{224}

⇒ 1 + 0.01r = 1.08

⇒ 0.01r = 0.08

⇒ r = 8% (Answer)

6 0
4 years ago
What is the next term in the multiplication or geometric pattern that begins in 14, 70, 350
Lina20 [59]

Answer:

1750

Step-by-step explanation:

your rule is times 5 so 350*5=1750

5 0
3 years ago
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