3 years ago

These three. Please. I don’t know how to do them

Mathematics

1 answer:

IRINA_888 [86]3 years ago

3 0

Answer:

23)

P = 20x^2 + 14xy^2

A = 70x^3y^2

24)

P = 8a^3b + 4ab

A = 4a^4b^2

25)

A = 18x^3y

Step-by-step explanation:

23)

P = 2(10x^2 + 7xy^2)

P = 20x^2 + 14xy^2

A = 10x^2 x 7xy^2

A = 70x^3y^2

24)

P = 2a^3b + 6a^3b + 4ab

P = 8a^3b + 4ab

A = 1/2(2a^3b)(4ab)

A = 4 a^4 b^2

25)

A = 1/2(4xy+8xy)(3x^2)

A = 1/2(12xy)(3x^2)

A = 18x^3y

You might be interested in

Five friends each buy a shirt that cost $15 and a pair of shoes that cost $50. Write an expression to show how much total money

Vika [28.1K]

Answer:

5(50+15)=x

x being the total

Step-by-step explanation:

4 0

3 years ago

Here is a circle and a scaled copy of the circle with a scale factor of `2`.

3241004551 [841]

Answer:

So we know that C= 2×pi×r
Say the r of the first circle is 1 then C= 2pi
Now its dilated by a scale factor of 2 so the r=2, so the C=4pi
We notice the circumference doubles.

5 0

3 years ago

Which of the following represents the approximate circumference of a circle with a diameter of 5.8 ft? A. 9.106 ft C. 18.212 ft

mario62 [17]

Answer:

C-18.212 feet

Step-by-step explanation:

7 0

3 years ago

A city's population is 12,000 and grows at 2.6% rate. What will the population be after 25 years? A city's population is 230,000

Levart [38]

Answer:

The 12000 City would become 22,986 people, while the 230,000 city would become a population of 124,223.

Step-by-step explanation:

1st Part:

=12000⋅(0.026000000000000002⋅25)

=12000(2.718281828459045)(0.65)

=22986

2nd Part:

=230000⋅(−0.044000000000000004⋅14)

=230000(2.718281828459045)(−0.616)

=124223

3 0

3 years ago

Read 2 more answers

9 cm

goldenfox [79]

Answer:

Step-by-step explanation:

a^2 + b^2=c^2 so 81 + 9= 90 c= Square root of 90 which is 9.5.

<h3 />

7 0

3 years ago