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2 years ago

Help please i’ll give extra points : )

Mathematics

1 answer:

nalin [4]2 years ago

8 0

Answer:

rub the magnets with a stronger magnet then they would be more magnetized

Explanation: If you rub a magnet with lets say some metal then that metal would be magnetized so if you where to rub those 2 magnets with a stronger magnet those magnetized would be magnetized even more than they already are

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You have used the Distributive Property to transform numerical expressions such as (5)(3) + (2)(3) to (5 + 2)(3). How would you

IrinaK [193]

5x + 2x.....combine like terms..... = 7x

5x + 2x....subbing in 1 7x - 1....subbing in 1
5(1) + 2(1) = 5 + 2 = 7 7(1) - 1 = 7 - 1 = 6

5x + 2x...subbing in 2 7x - 1...subbing in 2
5(2) + 2(2) = 10 + 4 = 14 7(2) - 1 = 14 - 1 = 13

5x + 2x...subbing in 3 7x - 1...subbing in 3
5(3) + 2(3) = 15 + 6 = 21 7(3) - 1 = 21 - 1 = 20

5x + 2x...subbing in 4 7x - 1....subbing in 4
5(4) + 2(4) = 20 + 8 = 28 7(4) - 1 = 28 - 1 = 27

5x + 2x...subbing in 5 7x - 1...subbing in 5
5(5) + 2(5) = 25 + 10 = 35 7(5) - 1 = 35 - 1 = 34

5x + 2x result values are 1 more then 7x - 1 result values
there are no values that will make the 2 expressions equal....
because 5x + 2x = 7x......and the other one is 7x - 1......so the 7x - 1 values will always be 1 number less...because ur subtracting one

5 0

2 years ago

If triangle ABC is rotated 90 counterclockwise and then reflected across the x- axis, what will be the coordinate of A?

Furkat [3]

Answer:

Step-by-step explanation:

8 0

2 years ago

A right triangle has legs of 18 inches and 24 inches whose sides are

pav-90 [236]

Given:

A right triangle has legs of 18 inches and 24 inches.

The short leg is increasing by 4 in/sec and the long leg is shrinking at 9 in/sec.

To find:

The rate of change of the hypotenuse.

Solution:

Let x be the shorter leg (Base), y be the larger leg (Perpendicular) and z be the hypotenuse.

We have,

$\dfrac{dx}{dt}=4\text{ in/sec}$

$\dfrac{dy}{dt}=-9\text{ in/sec}$

$x=18$

$y=24$

According to the Pythagoras theorem,

$Hypotenuse^2=Base^2+Perpendicular^2$

$z^2=x^2+y^2$ ...(i)

$z^2=(18)^2+(24)^2$

$z^2=324+576$

$z^2=900$

Taking square root on both sides.

$z=\pm \sqrt{900}$

Side cannot be negative. So,

$z=30$

Differentiating (i) with respect to time t, we get

$\dfrac{d}{dt}z^2=\dfrac{d}{dt}(x^2+y^2)$

$2z\dfrac{dz}{dt}=2x\dfrac{dx}{dt}+2y\dfrac{dy}{dt}$

$2(30)\dfrac{dz}{dt}=2(18)(4)+2(24)(-9)$

$60\dfrac{dz}{dt}=144-432$

$60\dfrac{dz}{dt}=-288$

Divide both sides by 60.

$\dfrac{dz}{dt}=\dfrac{-288}{60}$

$\dfrac{dz}{dt}=-4.8$

Here, negative sign means hypotenuse is decreasing.

Therefore, the hypotenuse is shrinking at 4.8 in/sec.

7 0

2 years ago

Can anyone help me pls?

koban [17]

Answer:

a. What is asked: How many miles did she ride on Monday and Tuesday together?

b. What are the given facts: On Monday, she rode 1/5 of a mile, and on Tuesday she rode 2/5 of a mile.

c. What is the operation to be used: Addition

d. What is the number sentence: 1/5 + 2/5

e. What is the solution: 1/5 + 2/5 = 3/5

f. What is the complete answer: 3/5 of a mile

6 0

2 years ago

Solve pls brainliest

liraira [26]

1- 192
2-36

1- 168(original altitude)
+360(because the question says the hill is ______ 360 feet higher than checkpoint 2)
192

2- 168(checkpoint 2)
-132( checkpoint 4)
______
036

3 0

1 year ago