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morpeh [17]
2 years ago
15

Look at the equation below 4e+7=31 What is the value of e?

Mathematics
2 answers:
Ahat [919]2 years ago
7 0

Answer:

e = 6

Step-by-step explanation:

→ Mnus 31 from both sides

4e = 24

→ Divide both sides by e

e = 6

Black_prince [1.1K]2 years ago
3 0

Answer:

4e+7=31

4e=31-7

4e=24

e=24/6

e=4

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umka2103 [35]

Answer:

98.42

Step-by-step explanation:

7 × 14.6 =

= 7 × (7 + 7 + 0.6)

= 7 × 7 + 7 × 7 + 7 × 0.6

= 49 + 49 = 0.42

= 98.42

5 0
2 years ago
Callie solved this one-variable equation. When she was done, she tried to verify her answer, but found that it was wrong. Can yo
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3 years ago
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What is the value of 6x^3 +8x when x = 5
sertanlavr [38]
Just sub x in with 5.
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3 years ago
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Can someone help me I tried many ways but got a different answer
Likurg_2 [28]

Answer:

v = 21

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

Equality Properties

<u>Algebra I</u>

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<u>Geometry</u>

  • All angles in a triangle add up to 180°

Step-by-step explanation:

<u>Step 1: Set Up Equation</u>

2v + 3v + 75 = 180

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

  1. Combine like terms:                    5v + 75 = 180
  2. Isolate <em>v</em> term:                              5v = 105
  3. Isolate <em>v</em>:                                       v = 21
6 0
3 years ago
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55. If 3x = 4y, the value of (x + y)^2 : (x - y)^2 is:<br>​
ladessa [460]

Answer:

\large\boxed{(x+y)^2:(x-y)^2=49}

Step-by-step explanation:

3x=4y\qquad\text{subtract}\ 3y\ \text{from both sides}\\\\3x-3y=y\qquad\text{distributive}\\\\3(x-y)=y\qquad\text{divide both sides by 3}\\\\x-y=\dfrac{y}{3}\qquad(*)\\------------------\\3x=4y\qquad\text{add}\ 3y\ \text{to both sides}\\\\3x+3y=7y\qquad\text{distributive}\\\\3(x+y)=7y\qquad\text{divide both sides by 3}\\\\x+y=\dfrac{7y}{3}\qquad(**)\\------------------

(x+y)^2:(x-y)^2=\dfrac{(x+y)^2}{(x-y)^2}\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\=\left(\dfrac{x+y}{x-y}\right)^2\qquad\text{substitute}\ (*)\ \text{and}\ (**)\\\\=\left(\dfrac{\frac{7y}{3}}{\frac{y}{3}}\right)^2=\left(\dfrac{7y}{3}\cdot\dfrac{3}{y}\right)^2\qquad\text{cancel}\ 3\ \text{and}\ y\\\\=(7)^2=49

5 0
3 years ago
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