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3 years ago

Estimate 7719/52 by first rounding each number so that it has only 1 nonzero digit.

Mathematics

1 answer:

dmitriy555 [2]3 years ago

7 0

Answer:

160

Step-by-step explanation:

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What phrase best describes a rhombus

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3 years ago

Select the expression that is equivalent to (x+5)-(x-3)(x+5).

Musya8 [376]

Is -x^(2)-x+20 an answer choice?

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4 years ago

Which series represents this situation? 1+1*7+1*7^ 2 +...1*7^ 6; 1+1*7+1*7^ 2 +...1*7^ 7; 7+1*7+1*7^ 2 +... 1*7^ 6; 7+1*7+1*7^ 2

Keith_Richards [23]

Answer:

Step-by-step explanation:

The series is missing from the question. I will answer this question with a general explanation by using the following similar series:

$\sum\limits^6_{n=0} 7^n$

Required

The series

To do this, we simply replace n with the values

$\sum\limits^6_{n=0}$ means n starts from 0 and ends at 6

$\sum$ means the series is a summation series

So, we have:

$\sum\limits^6_{n=0} 7^n = 7^0 + 7^1 + 7^2 + ...... + 7^6$

$\sum\limits^6_{n=0} 7^n = 1 + 7 + 7^2 + ...... + 7^6$

8 0

3 years ago

What is the x and the y

Ghella [55]

Answer:

$x=5\\\\y=-8$

Step-by-step explanation:

Given Equation:

$-7x-10y=45\\\\$ Equation:1

$-3x-5y=25$ Equation:2

Multiplying Equation:2 by '2':

$-6x-10y=50$ Equation:3

Using Elimination Method: Subtracting Equation:1 from Equation:3:

$-6x-10y-(-7x-10y)=50-45$

$-6x-10y+7x+10y=5\\\\$

Solving Like terms:

$-6x+7x=5\\\\x=5$

Put the value of 'x' in Equation:2

$-3x-5y=25$

$-3(5)-5y=25\\\\-15-5y=25$

Adding '15' both sides:

$-5y=25+15\\\\-5y=40$

Dividing by '-5' both sides:

$y=40/-5\\\\y=-8$

The values of 'x' and 'y' are:

$x=5\\\\y=-8$

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3 years ago

Please Help!!!!!!!!!!!!!!! I need this ASAP!

larisa [96]

It’s the second choice

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3 years ago

Read 2 more answers