All categories

3 years ago

Hi i need help with this

Mathematics

2 answers:

Marianna [84]3 years ago

5 0

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

2 * (n+2) -> 2n + 4

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

n + n + n + n -> 4n

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

2 * (3n) -> 6n

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

4n + n -> 5n

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

Illusion [34]3 years ago

3 0

Answer:

2 (n + 2) = 2n + 4

n + n + n + n = 4n

2 (3n) = 6n

4n + n = 5n

Step-by-step explanation:

You might be interested in

C 11cm 11cm B A 8cm Construct the isosceles triangle ABC

Alina [70]

Idk if I am correct

5 0

4 years ago

I really really need help someone!! )):

yaroslaw [1]

diameter is 15 meters then radius is 15/2 = 7.5 meters

so the amplitude is 7.5 m and height will oscillate with amplitude 7.5 m above and below the center.

midline of the oscillation will be 7.5 m

the wheel.take 8 minutes to complete revolution then it means the height will oscillate with a period of 8 minutes

3 0

4 years ago

Work out the mean of these three numbers

maxonik [38]

Answer:

110

Step-by-step explanation:

Let the three numbers be 100, 110 and 120

100 + 110 + 120 = 330

Total numbers = 3

$mean = \frac{330}{3} = 110 \\$

6 0

3 years ago

the height of an equivalent triangle is 15cm and it's perimeter is 36cm find the area of the triangle

OlgaM077 [116]

Answer:

The area is 72 cm².

Step-by-step explanation:

Since it is equivalent triangle

h = b

so,

b + b + b (since all sides are equal)= 36 cm

3b = 36 cm

or, b = 36/3

so, b = 12 cm

area of triangle = (1/2)×b×h

= (1/2)×12cm×12cm

= 6cm × 12cm

= 72 cm²

4 0

3 years ago

Pls help! solve the equation by completing the square. 0= x^2 - 14x

Sedaia [141]

Answer:

B. x= 0,14

Step-by-step explanation

1. 0= x^2 - 14x

2. x^2 - 14x=0

3. (b/2)^2= (-7)^2

4. x^2 - 14x +49= 49

5. (x-7)^2=49

6. x= 0, 14

3 0

3 years ago

Read 2 more answers