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3 years ago

I NEED HELP! PLEASE! I WILL GIVE OUT BRAINLIST IF CORRECT!

Mathematics

1 answer:

Lisa [10]3 years ago

8 0

Answer:

A reflection on the y axis, then a reflection on the x axis, then a translation of 7 units to the left

Step-by-step explanation:

plz mark me as brainliest

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What the answer to this

Bad White [126]

Answer:

A: 25

Step-by-step explanation:

3 0

3 years ago

What are the coordinates of the midpoint of EF?

BabaBlast [244]

The answer would be d. (1,3.5)
you would use the midpoint formula that is attached below.

7 0

3 years ago

David was in need for some money so he decided to clean out the water fountain at the mall he found 20 nickels and quarters. The

Shkiper50 [21]

Answer:

David find 8 quarters.

Step-by-step explanation:

Given:

David was in need for some money so he decided to clean out the water fountain at the mall he found 20 nickels and quarters.

The collection of nickels and quarters totaled to 2.6.

Now, to find the quarters David find.

Let the number of nickels be $x$

And the number of quarters be $y$

Thus, the number of nickels and quarters he found:

$x+y=20.$

⇒ $x=20-y$ .........( 1 )

The totaled of nickels and quarters:

$0.05x+0.25y=2.6$

(As 1 nickel=$0.05 and 1 quarter=$0.25)

Now, putting the equation ( 1 ) in the place of $x$ we get:

$0.05(20-y)+0.25y=2.6$

⇒ $1-0.05y+0.25y=2.6$

⇒ $1+0.20y=2.6$

Subtracting both sides by 1 we get:

⇒ $0.20y=1.6$

Dividing both sides by 0.20 we get:

⇒ $y = 8.$

So, the quarters = 8.

Therefore, David find 8 quarters.

3 0

3 years ago

The equation y 4.9t 2 3.5t 2.4 relates the height y in meters to the elapsed time t in seconds for a ball thrown downward at 3.5

tamaranim1 [39]

Answer:

$t \approx 0.43\,s$

Step-by-step explanation:

The vertical displacement function is $y(t) = -4.9\cdot t^{2}-3.5\cdot t + 2.4$ , where $y(t)$ is measured in meters and $t$ in seconds. Ball hits the ground when $y(t) = 0$ . That is:

$-4.9\cdot t^{2}-3.5\cdot t + 2.4 = 0$

Whose roots can be found by using the General Formula for Second-Order Polynomials:

$t_{1,2} = \frac{3.5\pm \sqrt{(-3.5)^{2}-4\cdot (-4.9)\cdot (2.4)} }{2\cdot (-4.9)}$

Solutions of this polynomial are:

$t_{1} \approx 0.43\,s,t_{2} \approx -1.14\,s$

Only the first root is physically consistent.

3 0

3 years ago

Hi can some1 help quickly :) tysm

frez [133]

Answer:

1:2 is the simplest form

Step-by-step explanation:

the ratio is 4:2 but since That's not the simplest form, you must find the GCF. the GCF is 2, divide both numbers by 2 and you get 2:1. you pull the ratio from segment AB and segment DF since both of them have measurements already stated.

hope this helps! :)

8 0

2 years ago