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torisob [31]
3 years ago
12

An algebra tile configuration. Only the Product spot is shown. 8 tiles are in the Product spot in 3 columns with 3 rows. First r

ow: 1 + x squared, 2 + x. Second row: 1 +x, 2 +. Third row: 1 +x, 1 +. How many more unit tiles need to be added to the expression x2+4x+3 in order to form a perfect square trinomial? 1 2 3 4
WILL MARK BRAINLIEST
Mathematics
2 answers:
BartSMP [9]3 years ago
8 0

Answer:

The answer is A, one tile.

Step-by-step explanation:

There is an opening for only one tile.

tamaranim1 [39]3 years ago
5 0

Answer:

i think its a

Step-by-step explanation:

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The length of a rectangle is 8 cm greater than its width. The perimeter is at most
noname [10]

Answer:

The length is 14 and the width is 6

3 0
4 years ago
Suppose the speeds of vehicles traveling on a highway are normally distributed and have a known population standard deviation of
ladessa [460]

Answer:

The margin of error for the confidence interval for the population mean with a 98% confidence level is 2.88 miles per hour.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.98}{2} = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.326

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

Find the margin of error for the confidence interval for the population mean with a 98% confidence level.

M = 2.326*\frac{7}{\sqrt{32}} = 2.88

The margin of error for the confidence interval for the population mean with a 98% confidence level is 2.88 miles per hour.

5 0
3 years ago
Please help me on this geometry i’ll mark u the brainliest
kicyunya [14]

Answer:

<h2>               XN = 6</h2>

Step-by-step explanation:

If XY is bisector of angle AXN then:   \dfrac{YN}{AY}=\dfrac{XN}{AX}

\dfrac4{12}=\dfrac{XN}{18}\\\\XN=\dfrac4{12}\cdot18\\\\XN=6                                                            

5 0
4 years ago
Can you please help meeee
Sidana [21]
3. y=5x+1
y=3x+5
5x+1=3x+5
5x-3x=5-1
2x=4
x=2

4.y=3x-5
3x-2y=4
2y=6x-10
2y=3x-4
6x-10=3x-4
6x-3x=-4+10
3x=6
x=2

5.3x-y=13
2x+3y=16
3x-y=13
2x+3y=16
y=3x-13
3y=16-2x
3y=9x-39
3y=16-2x
9x-39=16-2x
9x+2x=16+39
11x=55
x=11


Hope i helped ❤️
5 0
3 years ago
50 POINTS!! A picture shows the net of the lateral surface of the cone. Which statement about this cone is NOT true?
Svetllana [295]
Thats not 50 points brodi
8 0
3 years ago
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