Ask question

Ask question

All categories

mihalych1998 [28]

3 years ago

5

If -4 is added to a number and them sum is doubled, the result is -16 less than the number. find the number.

1 answer:

mote1985 [20]3 years ago

4 0

Let the number be x
(-4+x)×2 = x-(-16)
-8-2x=x+16
-2x-x=16+8
-3x=24
x=24÷-3
x=-8

You might be interested in

Determine the area of the given region under the curve <br> (1/x^4) [1,2]

Nikolay [14]

Answer:

$\displaystyle \frac{7}{24}$

General Formulas and Concepts:

<u>Algebra I</u>

Exponential Rule [Rewrite]: $\displaystyle b^{-m} = \frac{1}{b^m}$

<u>Calculus</u>

[Area] Limits of Riemann's Sums - Integrals

Integration Rule [Reverse Power Rule]: $\displaystyle \int {x^n} \, dx = \frac{x^{n + 1}}{n + 1} + C$

Integration Rule [Fundamental Theorem of Calculus 1]: $\displaystyle \int\limits^b_a {f(x)} \, dx = F(b) - F(a)$

Step-by-step explanation:

<u>Step 1: Define</u>

<u /> $\displaystyle f(x) = \frac{1}{x^4} \\ \ [1, 2]$ <u />

<u />

<u>Step 2: Find Area</u>

[Integral] Set up area: $\displaystyle \int\limits^2_1 {\frac{1}{x^4}} \, dx$
[Integral] Rewrite: $\displaystyle \int\limits^2_1 {x^{-4}} \, dx$
[Integral] Reverse Power Rule: $\displaystyle \frac{-1}{3x^3} \bigg| \limits^2_1$
[Area] Fundamental Theorem of Calculus: $\displaystyle \frac{7}{24}$

Topic: Calculus

Unit: Basic Integration/Riemann Sums

Book: College Calculus 10e

6 0

2 years ago

PLEASE HELP ME :) THANK YOU IN ADVANCE !!

Andrei [34K]

Answer:

64 squnits

Step-by-step explanation:

trapezium is (base+top)/2 times height

(6+10)/2=8

8x8=64

8 0

2 years ago

Eight children equally share 5 apples. How much of one apple is in each share?

Vinil7 [7]

5 divided by 8 is 5/8 or .625, so each get 5/8 or.625 of an apple

8 0

2 years ago

Look at the right triangle ABC:

prisoha [69]

Answer:

The first incorrect justification is in step 2.

Step-by-step explanation:

<u>Step 2</u>. BC2 = AC • DC

2. BC ÷ DC = BC ÷ AC because triangle ABC is similar to triangle BDC

It's supposed to be AC ÷ BC not BC ÷ AC.

8 0

3 years ago

Tim and Stacy are volunteers who are helping with the town marathon. They're expecting 260 participants, but only 156 has have r

Amiraneli [1.4K]

Answer:

45%

Step-by-step explanation:

hope it helps,

5 0

2 years ago

Read 2 more answers