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3 years ago

I need help with this please

Mathematics

1 answer:

andrezito [222]3 years ago

7 0

Answer:

1988920000000000

Step-by-step explanation:

1.98892 x 1000000000000000 (15 zeros)

The upper number (in this case 15) indicates the amount of zeros after the 1 (10 is 10^1, 100 is 10^2)

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the length of a rectangle is 6in.more than than its width .Its area is 50 sq.in Find the width of the rectangle....

yulyashka [42]

L=6+W
A=LW
sub 6+W for L
A=(6+W)(W)
expand
oh, A=50
50=W²+6W
minus 50 both sides
0=W²+6W-50
we gots to use quadratic formula
for
aW²+bW+c=0
W= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$
we got
a=1
b=6
c=-50

W= $\frac{-(6)+/- \sqrt{(6)^2-4(1)(-50)} }{2(1)}$
W= $\frac{-6+/- \sqrt{36+200} }{2}$
W= $\frac{-6+/- \sqrt{236} }{2}$
W= $\frac{-6+/- 2\sqrt{59} }{2}$
W= $-3+/- \sqrt{59}$

W= $-3+ \sqrt{59}$ or W= $-3- \sqrt{59}$
aprox
W=-10.6811 or W=4.68115
can't be negative width

width=4.68115 or -3√59

7 0

2 years ago

(__)^2=(csc x-1)(csc x+1)

Aleksandr [31]

(csc x-1)(csc x+1)=csc²x-1²=csc²x-1=(1/sin x)² -1=1/sin x² - sin²x/sin²x=
=(1-sin²x)/sin² x = cos² x/ sin² x = (cos x/sin x)²= (cot x)²

8 0

3 years ago

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How to do: -8(1-a)=-7-(1-3a)

Fiesta28 [93]

In this question, you're solving for a.

Solve for a:

-8(1 - a) =-7 -(1 - 3a)

use the distributive property

-8 + 8a = -7 -(1 - 3a)

-8 + 8a = -7 - 1 + 3a

combine like terms

-8 + 8a = -8 + 3a

subtract 3a from both sides

-8 + 5a = -8

add 8 to both sides

5a = 0

divide both sides by 5

a = 0

7 0

2 years ago

1.Are AC^line and BE^line congruent? Explain.

Ksivusya [100]

Line AC has 7 spaces and line BE has 8

to know this you count from letter A to C which is 7. and then B to E which is 8

They ARE NOT CONGRUENT

3 0

2 years ago

The lenght of a rectangle is 27 cm and its width is 15 cm. *

valentina_108 [34]

Answer:

Step-by-step explanation:

So should I find area or perimeter?

5 0

2 years ago

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