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jarptica [38.1K]
3 years ago
14

5x÷2 (x÷7)=14x-7 find x​

Mathematics
1 answer:
kupik [55]3 years ago
8 0

Answer:

7/4

Step-by-step explanation:

5x/2(x/7)=14x-7

35 = 28x-14

28x=35+14

x=49/28

x=7/4

You might be interested in
Write a cosine function that Has a midline of 2 an amplitude of 3 and a period of 7pi/4
Alexxx [7]

Given:

Amplitude of cosine function, A=3.

Period, T=7π/4.

Midline, D=2.

The time period can be expressed as:

T=\frac{2\pi}{B}

Put T=7π/4 to find the value of B.

\begin{gathered} \frac{7\pi}{4}=\frac{2\pi}{B} \\ B=\frac{4\times2}{7} \\ =\frac{8}{7} \end{gathered}

The general cosine function can be expressed as,

f(x)=A\cos (Bx)+D

Substitute B=8/7, A=3 and D=2 in above equation.

f(x)=3\cos (\frac{8}{7}x)+2

Therefore, the cosine function is,

f(x)=3\cos (\frac{8}{7}x)+2

5 0
2 years ago
Which expression represents the distance between the points (11, 4) and (5,8)?
antiseptic1488 [7]

Answer:

\displaystyle d = 2\sqrt{13}

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<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)

<u>Algebra II</u>

  • Distance Formula: \displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (11, 4) → x₁ = 11, y₁ = 4

Point (5, 8) → x₂ = 5, y₂ = 8

<u>Step 2: Find distance </u><em><u>d</u></em>

Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>

  1. Substitute in points [Distance Formula]:                                                       \displaystyle d = \sqrt{(5-11)^2+(8-4)^2}
  2. [√Radical] (Parenthesis) Subtract:                                                                 \displaystyle d = \sqrt{(-6)^2+(4)^2}
  3. [√Radical] Evaluate exponents:                                                                    \displaystyle d = \sqrt{36+16}
  4. [√Radical] Add:                                                                                               \displaystyle d = \sqrt{52}
  5. [√Radical] Simplify:                                                                                         \displaystyle d = 2\sqrt{13}
4 0
3 years ago
How do you find the answer ?
jeka94
I think first you must Unification of denominatorsit will 60 for (3,4,5) so you will get 
2\5 = 24\60
1\4 = 15\60
1\3 = 20 \60
then you divide each one apart then multiply by total number (3,800)
so :
24\60 * 3800 = 1520
15\60 * 3800 = 950
20 \60 * 3800 = 1267
_____
note : when you will gather results you will get Approximate number to 3800

i hope i helped 
5 0
4 years ago
SOLVE FASTTT
kherson [118]

Answer:

Step-by-step explanation:

Area of triangle is 40 cm² correct to nearest 5cm² .

∴ Area of triangle = ( 40 ± 5) cm²

∴ upper bound for area of triangle is = (40 + 5) cm² = 45cm²

Base of triangle = 9cm

∵ area of triangle = 1/2 base × height

height = 2 × area of triangle/base

∴ upper bound for height of triangle = 2 × upper bound area/base

= 2 × 45/9 = 10cm

Hence answer is 10cm

8 0
3 years ago
Can I please have help
taurus [48]
You could use an equation like y=6x

4 0
3 years ago
Read 2 more answers
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