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elena-s [515]
11 months ago
6

Solve

+ 8x - 1 = 0" alt="{2x}^{2} + 8x - 1 = 0" align="absmiddle" class="latex-formula">by completing the square
​
Mathematics
1 answer:
kramer11 months ago
4 0

Answer:

x= ± 3\sqrt{2} /2 +2

Step-by-step explanation:

Use the formula ( b/2) ^2 in order to create a new term. Solve for x by using this term to complete the square.

x= ± 3\sqrt{2} /2 +2

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One serving of a certain brand of yogurt contains 12 G of fat the low-fat version contains 38.75% less fat per serving how many
Mkey [24]

Answer:

One serving of law-fat yogurt contains 7.35 g of fat.

Step-by-step explanation:

One serving of

  • a certain brand of yogurt contains 12 g of fat
  • the low-fat yogurt contains 38.75% less fat

Let x g be the amount of fat in low-fat yogurt. Then

12 g of fat - 100%

x g of fat - 100% - 38.75% = 61.26%

Write a proportion

\dfrac{12}{x}=\dfrac{100}{61.25}

Cross multuply

100\cdot x=12\cdot 61.25\\ \\100x=735\\ \\x=\dfrac{735}{100}=7.35

One serving of law-fat yogurt contains 7.35 g of fat.

3 0
3 years ago
A box is filled with candies in different colors. There are 40 white candies, 24 green ones, 24 yellow ones, 12 red ones, and 20
AleksAgata [21]

Answer:

3/10 or 30% chance red and green being pulled

Step-by-step explanation:

to get your fraction you do your amount wanted pulled (red and green) over the amount total (all of the colors)

24 + 12 = 36

40 + 24 + 12 + 24 + 20 = 120

36/120 now reduce 6

6/20 reduce by 2

3/10

5 0
3 years ago
Simplify
Blababa [14]
Equation describes a sloping line. For any
equation ax+by+c = 0, slope is .<span>X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. 30/5 = 6.Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is 30/-3 = -10.Slope is -5/-3 = 1.66666666666667.<span> Equation in slope-intercept form: y=1.66666666666667*x+-10.</span></span>
6 0
3 years ago
Factorise completely:<br> 12a+8b
zavuch27 [327]
12a + 8b....common factor is 4
4(3a + 2b) <==
6 0
3 years ago
What is the volume of the triangular right prism?
Minchanka [31]

Answer:D

Step-by-step explanation:

5 0
2 years ago
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