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vagabundo [1.1K]
4 years ago
9

When Amber does her math homework, she finishes 10 problems every 7 minutes. How long will it take for her to complete 35 proble

ms?(redo, I need good explanation and the steps to the answer)
Mathematics
2 answers:
MA_775_DIABLO [31]4 years ago
5 0

Answer:

24 1/2 minutes

Step-by-step explanation:

10 problems in 7 minutes

5 problems in 3 1/2 minutes

multiply 5 × 7 (5×7 = 35) to get 35

multiply (or add) 3 1/2 minutes times 7 (or add it together 7 times

pav-90 [236]4 years ago
4 0

Answer:

24.5 minutes.

Step-by-step explanation:

10 / 7 = 35 / x

7 x 35 = 245

245 = 10x

245/10 = 24.5

Feel free to let me know if you need more help. :)

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Figure A has the largest shaded figure because the 4 parts that aren’t covered are less than the other multiple parts of other figures.
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All zeros of polynomial function 3x^4 +14x^2 -5
Marizza181 [45]

Answer:

Correct answer:  x₁ = 1 / √3 = √3 / 3  or  x₂ = - 1 / √3 = - √3 / 3

Step-by-step explanation:

Given:

3 x⁴ + 14 x² - 5 = 0   biquadratic equation

this equation is solved by a shift  x² = t and get:

3 t² + 14 t - 5 = 0

t₁₂ = (-14 ± √14² - 4 · 3 · 5) / 2 · 3 = (-14 ± √196 + 60) / 6

t₁₂ = (-14 ± √256) / 6 = (-14 ± 16) / 6

t₁ = -5   or  t₂ = 1 / 3

the solution t₁ = -5 is not accepted because it cannot be x² = -5

we accepted  t₂ = 1 / 3

x² =  1 / 3  ⇒  

x₁ = 1 / √3 = √3 / 3  or  x₂ = - 1 / √3 = - √3 / 3

God is with you!!!

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3 years ago
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belka [17]

The angle is the same

all triangles equal to 180 degrees, so logically, the other angle is 60

It is an equilateral triangle.

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Dey are the same exact triangle

3 0
3 years ago
Please help !!!<br> I can’t solve this <br> The teacher doesn’t teach well
Scorpion4ik [409]

So here are 4 rules when it comes to exponents:

  1. When you raise a power to a power, you really just multiply the exponents: (x^m)^n=x^{m*n}
  2. When you multiply 2 exponents of the same base, you add the exponents together: x^m*x^n=x^{m+n}
  3. When you divide 2 exponents of the same base, you subtract the exponents: \frac{x^m}{x^n}=x^{m-n}
  4. To convert a negative exponent into a positive one, flip it to its reciprocal: x^{-m}=\frac{1}{x^m}\\ \frac{1}{x^{-m}}=\frac{x^{m}}{1}=x^m

<u>Part A:</u>

\frac{2x^3y^3}{4y^2}=\frac{1}{2}x^{3-0}y^{3-2}=\frac{1}{2}x^3y

<u>Part B:</u>

(\frac{x^{-8}}{y^{11}})^{-2}=\frac{x^{-8*-2}}{y^{11*-2}}=\frac{x^{16}}{y^{-22}}=\frac{x^{16}y^{22}}{1}=x^{16}y^{22}

<u>Part C:</u>

\frac{(2x^3)(x^4)^2}{8x^{11}}=\frac{(2x^3)(x^{4*2})}{8x^{11}}=\frac{(2x^3)(x^8)}{8x^{11}}=\frac{2x^{3+8}}{8x^{11}}=\frac{2x^{11}}{8x^{11}}=\frac{1}{4}x^{11-11}=\frac{1}{4}x^0=\frac{1}{4}

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3 years ago
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