2 years ago

HELP, 7th grade math

Mathematics

1 answer:

emmasim [6.3K]2 years ago

5 0

Answer:

$300,000 ( I hope this was helpful) >;D

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Ann ran 7 miles on Monday, 6 miles yesterday, and 8 miles today. If she runs an unknown number of miles tomorrow, how many miles

Airida [17]

Answer:

21+m m=miles on the unknown day amount

Step-by-step explanation:

It depends if its about the patterns

You could put a number such as five or nine so I just put up the equation to it

6 0

3 years ago

8x-5y=21 simultaneous linear equation<br>2x+9y=-5

olya-2409 [2.1K]

Answer:

$x=2$ and $y=-1$

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

$8x-5y=21$ Equation:1

$2x+9y=-5$ Equation:2

Solving equation multiply equation 2 with 4 on both the sides

$8x+36y=-20$ Equation 3

Subtracting Equation:3 from Equation:1

$8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1$

Putting value of 'y' in Equation:2 which will give the value of x

$2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2$

8 0

3 years ago

What is the sum of the interior<br> angles of a polygon that has 7<br> sides?

IgorC [24]

Answer:

900

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B

leonid [27]

Answer:

3 times greater

Step-by-step explanation:

6.7 x 10 to the 6 = 6700000

2x 10 to the 7 = 20000000

20000000/6700000 = 2.98507462687

Rounded - 3

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3 years ago

3 1/25 into a decimal

babunello [35]

Answer:

3.04

Step-by-step explanation:

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3 years ago