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andreyandreev [35.5K]
3 years ago
8

The table shows the current grades in one of the math classes and one of the science classes at a local high school. Find P(grad

e of B | science class).
Mathematics
2 answers:
Alenkinab [10]3 years ago
8 0

Hey, did you ever figure it out?

max2010maxim [7]3 years ago
4 0

Answer:

.667

Step-by-step explanation: 8/12 i may be wrong but 0.154 is def wrong

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PLS HELPPP<br> 9.58<br> 10.63<br> 11.56<br> 12.29
agasfer [191]

Answer:

10.63

Step-by-step explanation:

Pythagorean Theorem:

  • Base is 7
  • Height is 8
  • 7^2+8^2=c^2
  • 49+64=c^2
  • 113=c^2
  • √113=c
  • √113 is about 10.63
6 0
3 years ago
What are the roots of the polynomial equation x3 - 6x = 3x2 - 8? Use a graphing calculator and a system of equations.
makkiz [27]

Answer:

d : 4, 1, -2.

Step-by-step explanation:

There's no need for a calculator in my opinion because we can use the rational root theorem which states that the equations of this form:

\sum_{i=0}^{n} a_{i}x^i = 0 = a_{0} + a_{1}x + a_2x^2 + ... + a_nx^n = 0\\ a_i \in \mathbb{Z}

Have rational roots, than the roots are of the form: \frac{k \cdot a_o}{p \cdot a_n}, \ where \ k, p \in \mathbb{Z}.

Rewriting the equation we have:

x^3 - 3x^2 -6x + 8 = 0\\By \ our\ previous \ claim \ x \in D_8 \ where \ D_n \ the \ set \ of \ divisors \ of \ n.\\D_8 = \{\pm 1, \pm 2, \pm 4, \pm 8\} \\We \ plug \ in \ some \ number from \ D_8.\\Letting \ x = -2;\\(-2)^3 -3(-2)^2 -6(-2) + 8 = 0 \ \ \ Thus \ x+2 \ is \ a \ factor.\\We \ can \ now \ simplify \ the \ eq. \ using \ Polynomial \ Long \ Division.

x^3 -3x^2 -6x + 8 = (x+2)(Q(x))\\To \ find \ Q \ we \ divide \ the \ original \ equation \ by \ x + 2; which \ yields:\\Q(x) = x^2 - 5x + 4.\\So \ we \ can \ use \ the \ quadratic \ formula \ to \ find \ the \ roots:\\x = 4,x = 1. \\Thus \ x \in \{-2, 1, 4\}. \ \ These \ are \ all \ the \ roots.

5 0
4 years ago
If 8%of a number is 4, what is 12% of the number? Explain your reasoning.
S_A_V [24]
Plz look at the picture below.

4 0
4 years ago
Terry earns $10 per hour at Big Bob's Burgers. Jill earns 20% less than Terry and Jerry earns $0.50 more per hour than Jill. Whi
Dmitrij [34]
I would say around $5.50
4 0
3 years ago
Read 2 more answers
2x^+8x-3=-1 complete the square​
iren2701 [21]

someone please help me comethru this is so hard

3 0
4 years ago
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