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2 years ago

Find the product using identities (3x – 2)(3x+9)

Mathematics

2 answers:

lora16 [44]2 years ago

6 0

Answer:

9x^2+21x-18

Step-by-step explanation:

Rom4ik [11]2 years ago

4 0

9x^2+21x-18
3x*3x = 9x^
3x*-2= -6x
9*3x= 27x
27x-6x=21x
9*-2=-18

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A customer wants to purchase a pair of shoes that cost $45 and the state sales tax is 7%.

Rasek [7]

Answer:

$22.84

Step-by-step explanation:

The tax is calculated by 0.075 * 21.25 = 1.59375 or $1.59. So the total bill is the cost of items purchased plus tax, which is $21.25 + $1.59 = $22.84.

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2 years ago

How much more area does a large pizza with a 12 in. diameter have than a small pizza with an 8 in. diameter? Round your answer t

uranmaximum [27]

I'm pretty sure its 87 in2 but don't trust me! lol

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2 years ago

Read 2 more answers

Which of the two solids below are similar ?

Pachacha [2.7K]

Answer: I and II.

Step-by-step explanation:

By definition, two solids are similar if their corresponding sides are in the same ratio.

Knowing this, let's find which solids are similar:

Corresponding sides ratio of solids I and II:

$\frac{3}{2}=\frac{2}{\frac{4}{3}}=\frac{5}{\frac{10}{3}}$

$\frac{3}{2}=\frac{3}{2}=\frac{3}{2}$

Corresponding sides ratio of solids I and III:

$\frac{3}{\frac{9}{2}}=\frac{2}{3}=\frac{5}{8}$

$\frac{2}{3}=\frac{2}{3}=\frac{5}{8}$

Corresponding sides ratio of solids II and III:

$\frac{2}{\frac{9}{2}}=\frac{\frac{4}{3}}{3}}=\frac{\frac{10}{3}}{8}}$

$\frac{4}{9}=\frac{4}{9}=\frac{5}{12}$

You can observe that the solids I and II are similar.

3 0

2 years ago

Please help sorry if it’s a little blurry! I’ll mark brainliest if you tell me why you got that answer.

In-s [12.5K]

Answer:

the answer is c

Step-by-step explanation:

Since jane weighs 126 and is gaining 3 pounds per month that would make the part of the equation that is 126+3m and since Cynthia weighs 134 and is gaining 2 pounds every month that is what makes the 134+2m part of the equation. And since the equation is 134+2m=126+3m then the goal is to find how many months it would take for their weights' to be equal. Sorry that my explaining skills are terrible hopefully I helped a little.

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2 years ago

Beth is making a beanbag seat in the shape of a cube. Each side of the seat is 2 feet long. Beth needs to find the volume of the

valkas [14]

Answer:

4 bag's

Step-by-step explanation:

Given the bean bag made by beth is in the shape of cube with each side of the cube equal to 2 feet.

Now Also given that each bean bag holds 2 cubic feet of beans.

Let the number of bags of beans recquired are x

The total number of beans available are 2x cubic feet

Now the volume of the bean bag made by beth is

$Volume = side^{3}$

Volume = $2^3$

Volume = 8 cubic feet

Now 8 = 2x

x = 4

Therefore the number of bag's of beans recquired are 4

4 0

3 years ago