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3 years ago

HELP PLZ! I'll MARK BRAINLIEST!!

Mathematics

2 answers:

Alex787 [66]3 years ago

5 0

Answer:

x<-6 or -6>x. You're answer is -6

Interval notation would be (-infinity to -6)

Step-by-step explanation:

mash [69]3 years ago

4 0

Answer: x is greater than 15

Step-by-step explanation:

1/3x - 4 greater than 1

Add 4 to both sides

1/3x greater than 5

Divide both sides by 1/3

X greater than 15

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The base of the triangle decreases by 30% and the height increases by 20%.

sergeinik [125]

Answer:

Area decreases by 16%

Step-by-step explanation:

Use formula for the area of the triangle

$A=\dfrac{1}{2}\cdot \text{Base}\cdot \text{Height}$

Initial triangle:

The base is 18 cm

The height is 5 cm

The area is

$A_{initial}=\dfrac{1}{2}\cdot 18\cdot 5=45\ cm^2$

New triangle:

The base is $(1-0.3)\cdot 18=0.7\cdot 18=12.6\ cm$

The height is $(1+0.2)\cdot 5=1.2\cdot 5=6\ cm$

The area is

$A_{new}=\dfrac{1}{2}\cdot 12.6\cdot 6=37.8\ cm^2$

Area decreases by

$100\%-\dfrac{37.8}{45}\cdot 100\%=100\%-84\%=16\%$

5 0

3 years ago

Harold bought 3 pounds of red apples and 4.2 pounds of green apples from a grocery store, where both kinds of apples are $1.75 a

Lelechka [254]

The answer is 11.6
add 3+4.2= 7.2 times 1.75

4 0

2 years ago

Can someone please help me with this? thank you

Aleks [24]

Answer:

22.5

Step-by-step explanation:

Volume is l×w×h

2 × 2.5 × 4.5 = 22.5

3 0

3 years ago

Graph the function. y = 3 square root x

s2008m [1.1K]

Answer:

x=3×3

Step-by-step explanation:

ok it's fine if you don't mind

8 0

2 years ago

What is the perimeter of a rectangle with sides 2/3x+10 and 1/3x+5

gogolik [260]

Answer:

The perimeter of the rectangle is 2x+ 30

Step-by-step explanation:

Sides of the rectangle are 2/3x+10 and 1/3x+5

Now, Perimeter of the Rectangle = 2(Length + Breadth)

Here, sum of the sides = $(\frac{2}{3}x + 10 ) + (\frac{1}{3}x + 5 ) = (\frac{2}{3}x +\frac{1}{3}x ) + ( 10+ 5 )$

adding like terms with like terms, we get

( $\frac{2x + x}{3}) + 15 = \frac{3x}{3} + 15$

Hence, Sum = (x + 15)

Now, 2(Length + Breadth) = 2(x+15) = 2x + 30

hence, the perimeter of the rectangle = 2x+ 30

8 0

3 years ago