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2 years ago

Ill give Brainliest. please explain your answers. im so confused on these questions :((

Mathematics

1 answer:

Katen [24]2 years ago

8 0

Answer:

I'll answer the first one. Neither vehicles are crossing the speed limit since both are under 40mph.

Step-by-step explanation:

6 miles every 10 minutes = 36 miles every hour.

15 miles every 25 minutes = 36 miles every hour.

Speed limit = 40 mph

Neither vehicles are crossing the speed limit since both are under 40mph.

Hope this helped! :))

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A can of tuna has a volume 18pi cm3 and a height of 2 cm. Find the area of the label that wraps around the entire can and does n

Sphinxa [80]

Answer:

The area of the label is $12\pi\ cm^{2}$

Step-by-step explanation:

step 1

Find the radius

we know that

The volume of the cylinder (can of tuna) is equal to

$V=\pi r^{2} h$

In this problem we have

$V=18\pi\ cm^{3}$

$h=2\ cm$

substitute and solve for r

$18\pi=\pi r^{2} (2)$

Simplify

$18=r^{2}(2)$

$r^{2}=9$

$r=3\ cm$

step 2

Find the lateral area of the can

The lateral area of the cylinder (can of tuna) is equal to

$LA=2\pi rh$

we have

$r=3\ cm$

$h=2\ cm$

$LA=2\pi (3)(2)=12\pi\ cm^{2}$

5 0

3 years ago

Which number line shows the solution to fx-5 > 3?

sp2606 [1]

Answer:

Step-by-step explanation:

send the -5 to where the +3 is then you can now add the value together.

7 0

3 years ago

What is n x 2 squared= 14

zepelin [54]

Answer:

n=3.5

Step-by-step explanation:

2²=4

14÷4=3.5

3.5×4=14

3.5×2²=14

7 0

2 years ago

Find the vertex of the function given below. y= x2 - 6x +1

Helga [31]

Answer:

V( 3, -8 )

Step-by-step explanation:

Parable equation is of the form:

( x - h )² = 4p*(y - k)

In that expression, vertex has coordinates V ( h, k )

Then all we have to do is transform the given equation

y = x² - 6x + 1 or x² - 6x = y - 1 (1)

We can get a perfect square trinomial in the first member of the equation according to:

x² - 6x = ( x - 3 )² - 9

(x - 3 )² = x² - 6x + 9

By substitution en equation (1)

( x - 3 )² - 9 = y - 1

( x - 3 )² = y -1 + 9

( x - 3 )² = y + 8

( x - 3 )² = (y + 8 )

Then vertex coordinates are

V( 3 , -8)

3 0

3 years ago

Sally works at a store.

Ilya [14]

Answer:

Y is greater than or equal to 1/2x + 20

Y is less than or equal to 2/3x + 80

X is greater than or equal to 1200

X is less than or equal to 1850

Step-by-step explanation:

trust

8 0

2 years ago