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3 years ago

What is the solution to the equation? 2(x – 7) = 10x + 18

Mathematics

2 answers:

enot [183]3 years ago

5 0

X equals negative 4 ( x=-4)

jarptica [38.1K]3 years ago

4 0

1. Expand2x−14=10x+18
2. Subtract 2x from both sides−14=10x+18−2x
3 Simplify 10x+18−2x to 8x+18−14=8x+18
4. Subtract 18 from both sides−14−18=8x
5. Simplify −14−18 to −32−32=8x
6. Divide both sides by 8−328 = x
7. Simplify 328 to 4−4 = x−4 = x
8. Switch sidesx = −4

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An ice cream shop has a sign in their window that says, "We sell 12,000 scoops per month." The number of scoops has been rounded

dsp73

Answer:

B - 12,111

C - 11,589

Step-by-step explanation:

Here are the options

A - 10, 999

B - 12,111

C - 11,589

In order to round off to the nearest thousand, look at the hundred figure, if the number is greater or equal to 5, add 1 to the thousand figure. If this is not the case, add zero. Replace all the figures before the thousand figure with zero. i.e. the hundred ten, unit

Rounding off 10,999 to the nearest thousand is 11,000

the hundred figure is greater than 5, so one is added to the thousand figure. The

Rounding off 12,111 to the nearest thousand is 12,000

the hundred figure is less than 5, so zero is added to the thousand figure.

Rounding off 11,589 to the nearest thousand is 12,000

the hundred figure is equal to 5, so one is added to the thousand figure.

6 0

3 years ago

Find the values of x for which the series converges. (enter your answer using interval notation.) ∞ (x + 9)n n = 1 find the sum

Naddika [18.5K]

If the series is

$\displaystyle\sum_{n=1}^\infty(x+9)^n$

then it is geometric, which we know converges as long as the base is smaller than 1 in absolute value, i.e. $|x+9|$ . "Expanding" the absolute value, this is equivalent to

$-1$

When $x$ is in this interval, the geometric sum converges to

$\displaystyle\sum_{n=1}^\infty(x+9)^n=\frac1{1-(x+9)}=-\frac1{x+8}$

7 0

4 years ago

What is 5 multiples by 3

Shtirlitz [24]

15 if u count by fives u get 15

hope this helps :)

7 0

3 years ago

Read 2 more answers

The sum of 8n^2-3n+10 and -3n^2 -6n-7 is

EastWind [94]

8n^2-3n+10 + -3n^2-6n-7

8n^2 + -3n^2 = 5n^2

-3n + -6n = -9n

10 + -7 = 3

Put them all together and you get 5n^2-9n+3

I tried to space them out so that it makes more sense.

7 0

3 years ago

How do you show your work for 800-374 on a number line

Sergio039 [100]

Answer:

make the numberline 800 to 0 and do bunny hop to a different part of the number line to show subtraction.

Step-by-step explanation:

7 0

3 years ago