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3 years ago

Jimthompson5910 is such a great help and so important in making a differnce here.

Mathematics

1 answer:

stealth61 [152]3 years ago

7 0

Answer:

Step-by-step explanation:

find the gradient of the line using the y=mx +c method rearrange 2x+12y=-1 to become 12y=-2x-1...divide both sides by 12 so m=-1/6. To find the slope of a line perpendicular to 2x+12y=-1 when their slopes multiply they give -1. The gradient of the perpendicular line is 6. Using the point it passed through (0,9) use the equation of a line formula which would be y-9/x-0=6

cross multiply and you'll get y=6x+9

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Fiven the function w(x) = 9x+8, evaluate w(5)

dezoksy [38]

9(5)+8=53

All you have to do is plug 5 in for x

8 0

3 years ago

Starting with the definition 1.00in. = 2.54 cm, find the number of kilometers in 7.00mi . Please describe conversions.

ella [17]

The answer is 11.265408 km.

To calculate the number of kilometers, we will use several conversions:
A) 1 mi = 63,360 in
B) 1 in = 2.54 cm
C) 1 cm = 0.00001 km

A) 1 mi = 63,360 in
7 mi = 63,360 in · 7 = 443,520 in

B) 1 in = 2.54 cm
443,520 in = 2.54 cm · 443,520 = 1,126,540.80 cm

C) 1 cm = 0.001 km
1,126,540.80 cm = 0.00001 km · 1,126,540.80 = 11.265408 km

6 0

3 years ago

Read 2 more answers

Area formula for 8c by 8c using A=bh

QveST [7]

Answer:

64 c^2

Step-by-step explanation:

If the base is 8c and the height is 8c

A = bh

= (8c) * (8c)

= 84 c^2

5 0

3 years ago

Use the set B = {5, 7, 9, 11} to determine n(B).<br> n(B) = 0

kkurt [141]

9514 1404 393

Answer:

n(B) = 4

Step-by-step explanation:

There are four (4) elements in set B.

n(B) = 4

5 0

3 years ago

What is the factorization of the trinomial below -x^2+x+42

aksik [14]

For the given trinomial

$a=-1, b=1 ,c=42$

We need to multiply a by c
$-1 \times 42 = - 42$

We split the middle term with these two factors
$7,-6$
To obtain,

$- {x}^{2} + 7x -6x + 42$
We now factor

$- {x}^{2} + x + 42 \: = x( - x + 7) + 6( - x + 7)$
This implies

$- {x}^{2} + x + 42: = (x + 6)(7 - x)$

4 0

4 years ago

Read 2 more answers