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3 years ago

What is the answer for 7/10-1/2 in simplest form

2 answers:

6 0

$\frac{7}{10} - \frac{1}{2} \\ 
 \\ \frac{7x1}{10x1}= \frac{7}{10} \\ 
 \\ \frac{1x5}{2x5}= \frac{5}{10} \\
 \\ \frac{7}{10} - \frac{5}{10}= \frac{2}{10} \\ 
 \\ \frac{2:2}{10:2}= \frac{1}{5} \\
 \\ Solution: \frac{1}{5}$

Musya8 [376]3 years ago

4 0

Problem: 7/10 - 1/2
1/2 = x/10 Find the common denominator
1/2 = 5/10
Subtract the numerators
7-5
Answer: 2/10
Simplest form: 1/5

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Find the PERIMETER and AREA of each figure below

Oduvanchick [21]

Answer:

22)

$2(length+breadth+h)$

$2(5a^2b^2+3ab^2)$

$Perimeter: 2ab^2(5a^2+31)$

$Area:-$

$5a^2b^4 *3ab^2$

$A=15a^2b^6$

-----------

23)

$perimeter:-$

$4m^2+3mn^2+7mn$

$4m^2+10mn^2$

$answer: 2m(2m+5n^2)$

$Area:-$

$\frac{1}{2}* base* height$

$1/2*3mn^2*4m^2$

$6mx^{2+1}n^2$

$A=6m^3n^2$

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24)

$1/2*b*h$

$1/2x^24m^2*8mn$

$A=16m^3n$

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25)

$1/2*(7a^2b+11a^2b)*3ab$

$1/2*18a^2b*3ab$

$9a^2b*3ab$

$A=27 a^3b^2$

------------

26)

$A= 9\pi (x^3y)^2$

∴To calculate the perimeter , add the length of its sides.

∴To calculate the area, multiply its height by its width.

hope it helps...

have a great day!!

8 0

3 years ago

25 POINTS

kramer

Finding the volume of a cone (V=1/3 x pi x r^2 x h, where r is the radius and h is the height.
You will substitute in the information you know and then solve for the radius(r).

3 0

3 years ago

A store pays $20 for a hat. to make a profit the store prices the hat 60% higher. later a sale reduce the price by 10%. finally,

Maslowich

The clearance price of hat is $17.28

Step-by-step explanation:

Price paid by store = $20

Increment = 60% of price paid

Increment = $\frac{60}{100}*20 = \frac{1200}{100}$

Increment = $12

Increased price = 20+12 = $32

Sale = 10%

Discount amount = 10% of increased price

Discount amount = $\frac{10}{100}*32=\frac{320}{100}$

Discount amount = $3.2

Sale price = 32 - 3.2 = $28.8

Clearance sale = 40%

Discount of clearance sale = 40% of sale price

Discount = $\frac{40}{100}*28.8=\frac{1152}{100}$

Discount = $11.52

Clearance price = sale price - Discount of clearance sale

Clearance price = 28.8 - 11.52 = $17.28

The clearance price of hat is $17.28

Keywords: percentage, subtraction

Learn more about subtraction at:

#LearnwithBrainly

6 0

3 years ago

-2(x+y+2z). I need help with solving this problem

pychu [463]

Answer:

-2x-2y-2z I think that is answer

5 0

3 years ago

Read 2 more answers

At 7:00 A.M., Alicia pours a cup of tea whose temperature is 200°F. The tea starts to cool to room temperature (72°F). At 7:02 A

alexgriva [62]

Answer: A) Option B

B) 22.3 minutes.

Step-by-step explanation:

The temperature decreases in an exponential decrease, this means that we can write the equation as:

T(x) = A*r^x + B

Where A is the difference between the initial temperature and the room temperature, B is the room temperature, and r is a positive number smaller than 1, that says "how fast" the temperature decreases (and x is the variable, in units of time)

We know that the initial temperature

A = 200° - 72° = 128°

B = 72°

T(x) = 128°r^x + 72°

The only option with those two values is option B.

T(x) = 128(0.989)^x + 72

We should check that when x = 2m, the temperature must be 197°

T(2m) = 128*(0.989)^2 + 72 = 197.2° (that we can round down to 197°)

So this equation is correct

Now we want to find the time such the temperature is 172°F

then:

172° = 128°(0.989)^x + 72°

100° = 128°(0.989)^x

100/128 = (0.989)^x

x = ln(100/128)/ln(0.989) = 22.3 minutes.

Let's check in our equation:

T(22.3) = 128°(0.989)^22.3 + 72 = 172°

8 0

3 years ago