2 years ago

7,545 rounded to the nearest hundred

Mathematics

1 answer:

Alex2 years ago

5 0

The answer is 7,500.
Hope that helped!!!

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Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution? y = -x + 21 y = -2

Kamila [148]

-x+21=-2x+30
-x+2x=-21+30
x=9
-(9)+21=12

y=12

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2 years ago

If -3x-8=16 what is the value of -2(x-7)

777dan777 [17]

Answer:

-3x-8=16

-3x = 16+8

-3x = 24

x = 24/-3

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= -2(-8-7)

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Suppose the test scores of students in a class are normally distributed with a mean of 86 and a standard deviation of 4. What is

WARRIOR [948]

Answer:

-2.5

Step-by-step explanation:

Here in this question, we are interested in calculating the z-score for a student that had a particular mark at the test

To calculate the z-score, we need to use a mathematical formula

Mathematically;

z-score = (x - mean)/SD

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x = 76

mean = 86

standard deviation SD = 4

Plugging these values in the equation, we have;

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2 years ago

Help needed ASAP will give BRAINLIEST

grin007 [14]

Answer:

Step-by-step explanation:

Recall that the sum of the (3) interior angles of a triangle <em>must</em> equate to 180.

In other words:

$(55)+(20)+(x)=180$

Where x is our unknown angle. So, we need to solve for x.

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3 years ago

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My name is Ann [436]

Answer:

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Step-by-step explanation:

4x:3=6:5.

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4x × 5=6×3

20 X=18

X=18-20

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1 year ago