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Nina [5.8K]
3 years ago
6

Explain and correct the error made by a student who simplified this expression.

Mathematics
2 answers:
guapka [62]3 years ago
6 0

Answer:

8no \:  \: x \: so \: cannot \: simplified \: x

-2x+7x+8

=5x+8

balu736 [363]3 years ago
5 0

Answer:

5x+8

Step-by-step explanation:

the simplified form is 5x+8

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I need to know number 5 just what it says thank you
Stels [109]

Answer:

C

Step-by-step explanation:

Okay! Time to use the Pythagoras theorem.

a^2 + b^2 = c^2

4^2 + 7^2 = x^2

16 + 49 = c^2

65 = c^2

Let's take the square root of both sides to get

c ~ 8.06

C

:)

5 0
3 years ago
Read 2 more answers
Hello how are you today. Question 2(×+-5)+×=×+(-6) ​
andre [41]

Answer:

x = 2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Distributive Property

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

2(x + -5) + x = x + (-6)

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Distributive Property] Distribute 2:                                                                 2x - 10 + x = x - 6
  2. [Addition] Combine like terms (x):                                                                   3x - 10 = x - 6
  3. [Subtraction Property of Equality] Subtract <em>x</em> on both sides:                         2x - 10 = -6
  4. [Addition Property of Equality] Add 10 on both sides:                                   2x = 4
  5. [Division Property of Equality] Divide 2 on both sides:                                  x = 2
6 0
3 years ago
Read 2 more answers
Write an equation in point-slope format of the line having the given slope that contains the given point.
marta [7]
1) y + 1 = (1/4)(x - 3)
2) y - 6 = 0(x + 2)
3) y - 3 = -1(x + 2)
4) y + 7 = -2(x + 6)
3 0
3 years ago
PLEASE ANSWER ASAP:
user100 [1]

Answer:

The expression: x + 3x + (3x-5)

Step-by-step explanation:

Okay, so x is the amount of $ spent. And three times means 3x, and 5 less on entertainment is 3x - 5. So put the expression together and you get x + 3x + (3x-5). Now plug in 10 for x so 10+3(10) + (3(10) -5).

B. $30

C. $25

D. $65

4 0
2 years ago
Aaron invested $740 in an account paying an interest rate of 5%
vlada-n [284]

The amount of money   Justin would have in his account than Aaron, to the nearest dollar is $0

What is the future value formula for continuous compounding cash flow?

The future value, which is used to determine the worth of this investment of $740 made now in 18 years is as shown below:

FV=PV*e^(rt)

FV=the worth of the investment in 18 years=unknown

PV=the amount invested today=$740

e=mathematical exponential value=2.7182818

r=rate of interest which compounded continuously=5%

t=time of investment in years=18

FV=$740*2.7182818^(5%*18)

FV=$740*2.7182818^(0.90)

FV=$740*2.459603087981220

FV=$1,820.11

Justin:

FV=PV*(1+r/m)^(n*m)

PV=$740

r=5%

m=number of times in a year that interest is compounded=365

m=number of years=18

FV=$740*(1+5%/365)^(18*365)

FV=$1,819.99

difference=$1,820.11-$1,819.99

difference=$0.12($0 to the nearest dollar)

Find out more about continuous compounding on:brainly.com/question/23136156

#SPJ1

8 0
1 year ago
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