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sveticcg [70]
4 years ago
6

Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, wha

t is the value of A?
Mathematics
2 answers:
algol134 years ago
7 0

Answer:

A = 3

Step-by-step explanation:

Given

(5x² + 3x + 4) - (2x² + 5x - 1)

Remove the parenthesis from the first and distribute the second by - 1

= 5x² + 3x + 4 - 2x² - 5x + 1 ← collect like terms

= 3x² - 2x + 5

In the form Ax² + Bx + C

with A = 3

dimulka [17.4K]4 years ago
5 0
The answer is for this question is 3.
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4) Please help with question. MARKING BRAINLIEST AND 10 POINTS!!!!!!!!!!!!!! :D
baherus [9]
Since we can use direct substitution, we can just plug in x=0 into the equation.

x^{2} -1

=0^{2}-1

=-1

Thus, your answer is the first choice.

Have an awesome day! :)
5 0
3 years ago
4k + 12 = 52<br> using algbra
grigory [225]

Answer:

k=10

Step-by-step explanation:

4k + 12= 52

minus 12 on both sides

4k=40

now divide by 4

k=10

5 0
3 years ago
What is 4 1/2 + 4 1/4
ElenaW [278]

Answer:

Step-by-step explanation:

4 1/2 + 4 1/4 = 8 3/4

3 0
3 years ago
When a trend line is drawn on a scatterplot, there are 4 points above the trend line. About how many points should be below the
kirill [66]

<u>Answer-</u>

<em>About </em><em>4 points</em><em> should be below the trend line.</em>

<u>Solution-</u>

A Scatter Plot has points that shows the relationship between two sets of data.

A line of best fit or trend line is a straight line that best represents the data on a scatter plot.  

This line may pass through some of the points, none of the points, or all of the points.

But its objective is to have the line as close as possible to all points, and as many points above the line as below.

As there are 4 points above the trend line, so there should be 4 points below that.

4 0
3 years ago
Read 2 more answers
How much difference do a couple of weeks make for birth weight? Late‑preterm babies are born with 3434 to 3636 completed weeks o
Helen [10]

Answer:

0.0128

Step-by-step explanation:

(Use technology and enter your answer rounded to four decimal places.)

We apply the z score formula to this question

z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

We are given: N(2750,560)

x = 1500 grams, μ = 2750 grams, σ = 560 grams

= z = 1500 - 2750/560

z = -2.23214

Determining the Probabilty value from Z-Table:

P(x < 1500) = P(z = -2.23214)

= 0.012803

Approximately to four decimal places = 0.0128

The probability that a randomly chosen late-preterm baby would have a very low birth weight, less than 1500 grams is 0.0128.

6 0
3 years ago
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