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irinina [24]
2 years ago
12

Find the sum: 400 + 394 + 388 + .... - 32

Mathematics
2 answers:
romanna [79]2 years ago
6 0

Answer:

1150 because 400 + 394 + 388 = 1182 - 32 = 1150.

Mkey [24]2 years ago
4 0

Answer:

1150

Step-by-step explanation:

remember pemdas?

its a easier way to read this equasion!

parenthases

(400 + 394 + 388) = 1182

subtraction

1182 - 32 = 1150

hope this helped!

please mark me the brainliest if you can :]

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enot [183]

Answer:

It should be correct.

8 0
3 years ago
The area of a rectangle is 70 m², and the length of the rectangle is 11 m less than three times the width. Find the dimensions o
11111nata11111 [884]

Step-by-step explanation:

the area of a rectangle is

length × width

in our case

length × width = 70 m²

length = 3×width - 11

we can use this second equation in the first and get

(3×width - 11) × width = 70

3×width² - 11×width - 70 = 0

the general solution to a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 3

b = -11

c = -70

x = (11 ± sqrt((-11)² - 4×3×-70))/(2×3) =

= (11 ± sqrt(121 + 840))/6 =

= (11 ± sqrt(961))/6

x1 = (11 + 31)/6 = 42/6 = 7

x2 = (11 - 31)/6 = -20/6 = -10/3

the negative solution is not applicable for a length in an object.

so, only x1 = 7 m is our solution.

the width of the rectangle is 7 m.

the length = 3×width - 11 = 3×7 - 11 = 21-11 = 10 m

7 0
2 years ago
Pls help! WILL GIVE BRAINLIST!
Bumek [7]

Answer: D. y = x^2

Step-by-step explanation:

Linear functions are functions in which the power of the unknown variable is 1 , that is the other of the unknown variable will be 1

A. y = x

This is a linear function because both x and y has 1 has their power

B. y = 2x

This is also linear

C. y = x + 2

This is also linear

D. y = x^2

This is not linear , although the power of y is 1 but the power of x is 2 , for it to be linear , the highest power of the unknown must be 1

7 0
2 years ago
Dean invested $1100 into a bond. When the bond's maturity date was reached five
Oksanka [162]

Answer:

About 36%.

Step-by-step explanation:

The formula for the rate of return on investment is the total value minus the initial cost divided by the initial cost.

The total value is $1,500. The initial cost is $1,100.

(1,500 - 1,100) / 1,100 = 400 / 1,100 = 4 / 11 = 0.363636363636

So, Dean's rate of return on investment is about 36%.

Hope this helps!

7 0
3 years ago
Mt. Everest is the highest point in the world at about 8850 meters above sea level. Dead Sea Shore is the lowest point on dry la
NemiM [27]

Answer:

There is a difference of 9268 meters

Step-by-step explanation:

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2 years ago
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