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3 years ago

How do you get the answer for 820 decreased by 25%

1 answer:

7 0

So in this one, we are DECREASING by 25%, so we say 25% of 820...

25% × 820 =
.25 × 820 = 205

Now since we are decreasing by 25%, we take our answer and subtract it from the original amount, 820.

820 - 205 = 615

820 decreased by 25% is
615.

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Math help! plsss on these questions

likoan [24]

1.)-2v-7=-23
-2v=-16
v=8
2.)x/3-10=-12
x/3-10=-12
x/3=-2
x=-6
3.) x/4+10=14
x/4=4
x=16

5 0

2 years ago

if a smaller square of side 3 cm is cut out from a bigger square of side 9 cm to form a new shape ,What is the perimeter of the

Verdich [7]

Need to find:

Perimeter of new square formed?

$~$

Solution:

Side of smaller square = 3cm.
Side of Bigger square = 9cm

$~$

Using formula:

Perimeter of square = 4 × side

$~$

Perimeter of smaller square:

⟹ 4 × 3

⟹ 12 cm

$~$

Perimeter of Bigger square:

⟹ 4 × 9

⟹ 36cm

$~$

Perimeter of new square = Perimeter of Bigger square - Perimeter of smaller square

⟹ 36 - 12

⟹ 24 cm

$~$

∴ Perimeter of new square formed is 24 cm.

8 0

2 years ago

PLEASE HURRY!!!!!!

Anni [7]

Answer:

Step-by-step explanation:

The manager visits a park and interviews people who are waiting to use the tennis courts.

7 0

3 years ago

Taylor is making a mini apple pie with a radius of 3.14 in for her math class. what is the area of her mini pie?

artcher [175]

So First of all we need to know how to find the area of a circle.

Assuming that the apple pie is the shape of a circle

The formula for area is $\pi$ $r^{2}$

Well we know that the radius = 3.14

And we know that $\pi$ = 3.14 as well.

All we have to do is multiply..

3.14 x $3.14^{2}$ = 30.95

So the area of the pie is 30.95 in

Good Luck! :)

3 0

2 years ago

I need help please.....

maria [59]

Here, Function: h(t)= -16t² + 70t + 40

So, put the value of t, (time at which you want to calculate the height)

h(1) = -16(1)² + 70(1) + 40
h(1) = -16 + 110
h(1) = 94

Now, h(2) = -16(2)² + 70(2) + 40
h(2) = -64 + 180
h(2) = 116

h(3) = -16(3)² + 70(3) + 40
h(3) = -144 + 250
h(3) = 106

In short, Your height depends on time, and at each time it would be different, can be expressed by the coordinates on a Graph: (1, 94) (2, 116) (3, 106)

Hope this helps!

8 0

3 years ago