HELP ME PLEASE IT WOULD BE NICE

Help I'm not comfortable with negative numbers

Gemiola [76]

B) < because the more negative or the farther away from zero a number is the smaller it is
c) = because if you subtract a negative number you are basically adding
d) = because anytime you multiply a negative by positive your answer will always be negative

a) -11 because -8+3=-5 and -5-6=-11
b) 11 because when you multiply a negative number by another negative your answer will always be positive so -3x-2=6 and 6+5=11
c) -4 because a negative number divided by a positive is always negative
d)42 because a negative number subtracted by a positive number makes a number more negative (btw always solve things in parenthesis first) so -4-3=-7 and again a negative multiplied by another negative is always positive so -7x-6=42

8 0

3 years ago

nother way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible in

siniylev [52]

Answer:

x,y

Step-by-step explanation:

because it shows range and dange

6 0

3 years ago

A parcel delivery service will deliver a package only if the length plus girth (distance around) does not exceed 84 in. What are

Lesechka [4]

Answer:

a) $\frac{28}{\pi}$ in

b) 28 in

c) 784 in²

Step-by-step explanation:

Let the length be 'L'

and the radius be 'r'

Thus, according to the question

L + 2πr = 84 in

L = 84 - 2πr ............(1)

Volume of the cylinder, V = πr²L

substituting the value of L from 1, we get

V = πr²(84 - 2πr)

or

V = 84πr² - 2π²r³

for points of maxima, differentiating the above equation and equating it to zero

$\frac{dV}{dr}=\frac{d(84\pi r^2-2\pi^2 r^3))}{dr}$

or

2(84)πr - 3(2)π²r² = 0

or

2πr(84 - 3πr) = 0

or

r = 0 and 84 - 3πr = 0

or

⇒ 3πr = 84

or

⇒ r = $\frac{28}{\pi}$ in

since, the radius cannot be zero therefore, r = 0 is neglected

Therefore,

a) The radius of the largest cylindrical package = $\frac{28}{\pi}$ in

b) from (2)

L = 84 - 2πr

or

⇒ L = $84 - 2\pi\times\frac{28}{\pi}$

or

⇒ L = 84 - 56 = 28 in

The length of the largest cylindrical package = 28 in

c ) The volume of the largest cylindrical package ,V = πr²L

= $\pi\times\frac{28}{\pi}\times28$

= 784 in²

7 0

3 years ago

D+(−5.004)=2.826<br> I am so confused. What do I do?

enyata [817]

Okayyy, so the answer is 7.830. Adding a negative number is the same as subtracting a positive number so you can rewrite it as d-5.004=2.826, then you will add 5.004 to 2.826 and for your answer you will get 7.830.

6 0

4 years ago

Read 2 more answers

Which sequences of transformations applied to shape I prove that shape I is similar to shape II?

dangina [55]

Answer:

The sequence of transformations applied to shape I is:

a. reflection across the x-axis, followed by a reflection across the y-axis, and then a dilation by a scale factor of 0.5

Step-by-step explanation:

Let us consider a point a (2,1) in shape I .

Now when this point is reflected across x-axis the point is transformed to:

(2,-1)

( Since the rule of transformation is:

(x,y) → (x,-y) )

Now again when this point is reflected across the y-axis the point is transformed to:

(-2,-1)

( Since the rule of transformation is:

(x,y) → (-x,y) )

Now when this point is dilated by a scale factor of 0.5 the point that is obtained is:

(-1,-0.5)

( Since, the rule of transformation is:

(x,y) → (0.5x,0.5y) )

Hence, A (2,1) → A' (-1,-0.5)

Similarly we will consider one more point on the shape I i.e. B(3,1)

Now when this point is reflected across x-axis the point is transformed to:

(3,-1)

( Since the rule of transformation is:

(x,y) → (x,-y) )

Now again when this point is reflected across the y-axis the point is transformed to:

(-3,-1)

( Since the rule of transformation is:

(x,y) → (-x,y) )

Now when this point is dilated by a scale factor of 0.5 the point that is obtained is:

(-1.5,-0.5)

( Since, the rule of transformation is:

(x,y) → (0.5x,0.5y) )

Hence, B (3,1) → B' (-1.5,-0.5)

Similarly all the other points of shape I could be mapped to obtain the shape II.

Hence, option: a is correct.

4 0

4 years ago

Read 2 more answers