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3 years ago

One increased by the difference between 18 and seven times a number is -9

Mathematics

1 answer:

weqwewe [10]3 years ago

6 0

Answer:

(18-7x) +1 = -9

Step-by-step explanation:

the difference between 18 and seven times a number. First seven times a number is equal to 7x. Difference means subtract, so you get 18-7x. Now one increased is +1. But we have to put 18-7x into parentheses because if we dont, 18-7x+1, simplifes into 19-7x

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What value of n makes the equation 2(n+1)=-3(n-8)+3 true

LekaFEV [45]

<h3>Solution:</h3>

$2(n + 1) = - 3(n - 8) + 3 \\ = > 2n + 2 = - 3n + 24 + 3 \\ = > 2n + 3n = 24 + 3 - 2 \\ = > 5n = 25 \\ = > n = \frac{25}{5} \\ = > n = 5$

<h3>Answer:</h3>

<h3>Hope it helps.</h3>

ray4918 here to help

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3 years ago

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Mary stated that 2.01 x 10⁶ is less than 4.8 x 10⁴ because 2.01 is less than 4.8. what was mary's mistake ?

PIT_PIT [208]

Answer:

Mary's mistake was that she didn't take into account of the power that 10 is raised to; since 2.01 is multiplied by 10 to the 6, it makes 2.01 bigger. You can also expand the number to check:

2 010 000 vs. 4800

5 0

3 years ago

help im stuck pls -- Refer to the table above. Determine the percent of all voters that did not vote Republican or Democrat but

dsp73

Answer:

9.9%

Step-by-step explanation:

Well, you would just divide the "other" category and the "total" category and then move the decimal over 2 spaces, because you need to multiply by 100 to turn your answer into a percent, so:

$\frac{222}{2222} =0.09999...\\$

Then once you multiply by 100, or move the decimal to the left 2 spaces, it becomes:

9.9%, which could be rounded to 10% or 9%.

5 0

3 years ago

If C(5,-5) and D(7,3), then what is the length of CD?

Aleks04 [339]

Answer:

≈ 6.16

Step-by-step explanation:

Calculate the distance (d) using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = C(5, - 5) and (x₂, y₂ ) = D(7, 3)

d = √ (7 - 5)² + (3 + 5)²

= √ 2² + 8² = √ 4 + 64 = √68 ≈ 6.16 ( to 2 dec. places )

8 0

3 years ago

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What is a rational number?

jonny [76]

A rational number is: A number that can be written as a quotient of 2 integers, where the divisor is not 0.

Example: 2/5 , -6,

Because you can write any integer as a quotient with a denominator of 1, all integers are rational numbers,

Example: 5 = 5/1

~Aamira~

Hope this helped☺☺

8 0

3 years ago

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