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cupoosta [38]
3 years ago
14

Help I need the answer to this, please.

Mathematics
1 answer:
Jobisdone [24]3 years ago
3 0

Answer:

The simplified fraction of the expression \frac{5^2\times 5^{-4}}{5}  will be:

  • \frac{5^2\times \:5^{-4}}{5}=\frac{1}{125}

Step-by-step explanation:

Given the expression

\frac{5^2\times 5^{-4}}{5}

Steps to solve the expression

\frac{5^2\times 5^{-4}}{5}=\frac{5^{-2}}{5}          ∵ 5^2\times \:5^{-4}=5^{2-4}    

           =\frac{1}{5^3}

           =\frac{1}{125}           ∵ 5^3=125

Therefore, the simplified fraction of the expression \frac{5^2\times 5^{-4}}{5}  will be:

  • \frac{5^2\times \:5^{-4}}{5}=\frac{1}{125}

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Expand
ddd [48]

Answer:

The working of expressions is shown below.

Step-by-step explanation:

We are given the following information:

a) Expand

3(x+4)\\3\times x + 3\times 4\\3x + 12

b) Expand and simplify

4(x+5)-2(x-3)\\=(4x + 20) -(2x-6)\\=( 4x-2x) + (20 + 6)\\= 2x + 26\\=2(x +13)

c) Expand

(x+2)(x+7)\\=x\times x + x\times 7 + 2\times x + 2\times 7\\= x^2 + 7x + 2x + 14\\=x^2 + 9x +14

d) Factorize fully

12x-18\\=6(2x-3)

3 0
3 years ago
Read 2 more answers
A number is doubled, then decreased by 13.7. The result is greater than 125.28. What is the smallest integer that satisfies this
Elina [12.6K]

Answer:

x > 69.49

Step-by-step explanation:

Step 1: Write out equation

2x - 13.7 > 125.28

Step 2: Add 13.7 to both sides

2x > 138.98

Step 3: Isolate <em>x </em>by dividing both sides by 2

x > 69.49

So <em>x</em> has to be greater than 70 in order to fit into the question context.

8 0
4 years ago
А.
Marysya12 [62]

Answer:

24 ft^2

Step-by-step explanation:

Area of ABC=(1/2)*b*h

=(1/2)*8*6=24 ft^2

8 0
3 years ago
Read 2 more answers
Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining Bismuth-210 transforms i
Luden [163]

Answer:

Approximately 76.5 mg.

Step-by-step explanation:

Given,

The initial quantity of the Bismuth-210, P = 233 mg,

Also, the rate of decay per day, r = 13 %

Thus, the quantity of the Bismuth-210 after 8 days would be,

A=P(1-\frac{r}{100})^8

=233(1-\frac{13}{100})^8

=233(1-0.13)^8

=233(0.87)^8

=76.4733194697

\approx 76.5\text{ mg}

3 0
3 years ago
Simplify the following expression, 4.2x+4.7=18.6
zhannawk [14.2K]

Answer:

Step-by-step explanation:

4.2x+4.7=18.6

Multiple each term by 10

42x + 47 = 186

Collecting like terms

42x = 186 - 47

42x = 139

x = 139/42

x = 3 13/42 or 3.3

5 0
3 years ago
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