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Lelechka [254]
3 years ago
13

What number : Decreased by 40% is 60 ?

Mathematics
2 answers:
Nuetrik [128]3 years ago
3 0

Answer:

100

Step-by-step explanation:

Equation:

.6x=60 because 60 percent of x is 60.

x=100

Check:

100-.4(100)=60

True.

Grace [21]3 years ago
3 0

Answer:

100

Step-by-step explanation:

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What is 13/6 as a mixed fraction
irina1246 [14]

Answer:

The answer is 2 1/6

Step-by-step explanation:

First you would divide 13 by six and that would leave you with 2 with a remainder of 1. Then you would put together the fraction leaving 6 as the denominator, 2 as the whole number, and 1 as the numerator.

Let me know if you need any other help!

5 0
2 years ago
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Use a net to find the surface Area of the square pyramid The height of the pyramid is 9 yes and the base sides are all 2.5 yrds
Cerrena [4.2K]

Answer:

Area = 51.68yd^2

Step-by-step explanation:

Given

h = 9yd -- height

a = 2.5yd --- base sides

Required

Determine the surface area

The net is not given. So, I will solve directly.

The surface area is calculated as:

Area = a^2 + 2a\sqrt{\frac{a^2}{4} + h^2}

So, we have:

Area = 2.5^2 + 2*2.5\sqrt{\frac{2.5^2}{4} + 9^2}

Area = 6.25 + 5\sqrt{\frac{6.25}{4} + 81}

Area = 6.25 + 5\sqrt{1.5625 + 81}

Area = 6.25 + 5\sqrt{82.5625}

Area = 6.25 + 5* 9.086

Area = 51.68yd^2

6 0
3 years ago
How to put 634 in scientific form​
svetoff [14.1K]

Answer:

6.34 × 10²

Step-by-step explanation:

Calculating scientific notation for a positive integer is simple, as it always follows this notation: a x 10b.

Step 1

To find a, take the number and move a decimal place to the right one position.

Original Number: 634

New Number: 6.34

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 6 . 3 4

Decimal Count: 1 2

There are 2 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 6.34

b = 2

Now the whole thing:

6.34 x 10²

Step 4

Check your work:

10² = 100 x 6.34 = 634

7 0
3 years ago
Read 2 more answers
I need help please I will give you brainliest
liubo4ka [24]

Answer:

Step-by-step explanation:

4a: x=729

4b: x=9/25

5a ln (2)

5b log2(24

7 0
2 years ago
PLEASE HELP
Aliun [14]

Hello from MrBillDoesMath!

Answer:

(x^4-2) (x^4 -1)


Discussion:


Let u = x^4, then

x^8 - 3x^4 + 2

= u^2 - 3u + 2

= (u -2) ( u -1)

= (x^4-2) (x^4 -1)



Thank you,

MrB

8 0
3 years ago
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