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andriy [413]
4 years ago
9

Complete the square so that the left side of x2 + 8x − 3 = 0 becomes a binomial squared. (x +___)2 = ___

Mathematics
1 answer:
Eva8 [605]4 years ago
6 0

Answer:

(x + 4)2 = 19

4 and 19 is the answer.

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bija089 [108]

Answer:

We just add 1.1 and 7.4 to get 8.5 .

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7 0
3 years ago
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Evaluate the expression when a=
Olin [163]

Answer:

\frac{2}{15}

Step-by-step explanation:

Substitute the values for a and c into the expression

- 2c + a

= - 2× \frac{3}{10} + \frac{11}{15}

= - \frac{3}{5} + \frac{11}{15}

= - \frac{3(3)}{5(3)} + \frac{11}{15}

= - \frac{9}{15} + \frac{11}{15}

= \frac{2}{15}

3 0
3 years ago
One of the formulas for calculating the correct dosage for a child is as follows: C= a/((a+12)) ∙ 180 C = child’s dosage in mill
bogdanovich [222]
So you already have the formula for calculating the dosage for child with: C = a/(a+12)x 180 ml Not sure why you have double brackets

variables are: a = child's age, so everywhere you have an "a" replace it with the age of child.

Example: 5 year old child

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8 0
3 years ago
The question is show a dilation of a rectangle with a dilation of 8/3
miv72 [106K]

It's always easier to understand a concept by looking at specific examples with pictures, so I suggest looking at the dilation examples below first...before you try to internalize the steps listed below and that explain the general formula for dilating a point with coordinates of (2,4) by a scale factor of <span><span>12</span><span>12</span></span>.

<span><span>1) multiply both coordinates by scale factor<span>(<span><span>2⋅<span>12</span>,4⋅<span>12</span></span><span>2⋅<span>12</span>,4⋅<span>12</span></span></span>)</span></span><span>2)

2. Simplify(1,2)</span><span>3)

3. Graph(if required)<span> </span></span></span>
5 0
3 years ago
On the day before an election in a large city, each person in a random sample of 1,000 likely voters is asked which candidate he
gayaneshka [121]

Answer:

It's not possible to reach a conclusion about who will vote candidate Taylor because this is a random sample and not a population census or experiment.

Step-by-step explanation:

It is impossible to reach a conclusion about the proportion of all likely voters who plan to vote for candidate Taylor because the 1,000 likely voters in the sample represent only a small fraction of all likely voters in a large city.

6 0
3 years ago
Read 2 more answers
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