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4 years ago

3(x² + 3x - 10) Simply the expression

Mathematics

2 answers:

miv72 [106K]4 years ago

5 0

Answer:

3 $x^{2}$ +9x-30

Step-by-step explanation:

Multiply the three into each number

3 $x^{2}$ +9x-30

HACTEHA [7]4 years ago

3 0

Answer:

3x² + 9x - 30

Step-by-step explanation:

3 × x² = 3x²

3 × 3x = 9x

3 × -10 = -30

3x² + 9x - 30

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400 people were surveyed about their eye color. 8% of the people surveyed have green eyes. how many people had green eyes

VashaNatasha [74]

Answer:

Step-by-step explanation:

The problem above can be solved by using the multiplication operation.

Given: 400 people

8% of the people with green eyes

Let's solve:

Let x be the number of people with green eyes.

x = 400 x 8%

x = 400 x (0.08)

x = 32

So, the number of people surveyed with green eyes is 32. The rest of the surveyed people (368) have a different eye color.

3 0

3 years ago

10(1+3x)=-20 and -5x-8(1+7x)=-8 With steps

SOVA2 [1]

(1)

10(1+3x)=-20

Cross multiply.

10+30x=-20

Isolate x on one side. So you would subtract 10 on each side. and one side will cross each other out. leaving you with,

30x=-20-10

Subtract 10 from -20.

30x=-30

Divide each side by 30 to get x.

30x÷30=-30÷30

Therefore,

x=-1

(2)

-5x-8(1+7x)=-8

Cross multiply -8(1+7x)

-5x-8-56x=-8

Isolate all x's on one side. So you would add 8 on each side. and one side will cross each other out. leaving you with,

-5x-56x=-8+8

Add 8 to -8.

-5x-56x=0

Subtract -56x from -5x

-61x=0

Divide each side by -61

-61x÷-61=0÷-61

Therefore,

x=0

6 0

4 years ago

Find the volume of the figure below.

Gala2k [10]

$V=\pi r^{2} h\\V=\pi (3)^{2} (6)\\V=\pi (9)(6)\\V=54\pi units^{3} \\ or\\V=169.64(rounded to hundredth)$

7 0

3 years ago

Brainliest for my sister, black badger cat! noone else

san4es73 [151]

Answer:

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Step-by-step explanation:

3 0

3 years ago

I dont understand how to do this inequality 4x +6 <-6

Mama L [17]

4x + 6 < -6

First, subtract 6 from both sides. / Your problem should look like: 3x < -6 - 6
Second, simplify -6 - 6 to -12. / Your problem should look like: 3x < -12
Third, divide both sides by 4. / Your problem should look like: x < $-\frac{12}{4}$
Fourth, simplify $\frac{12}{4}$ to 3. / Your problem should look like: x < -3

Answer: x < -3

5 0

4 years ago