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Reika [66]
3 years ago
7

Find the length of AB

Mathematics
2 answers:
Vinil7 [7]3 years ago
7 0
X=3
that is the answer
olasank [31]3 years ago
6 0

Answer:

AB is 15

Step-by-step explanation:

AB and BC are equal because the line that goes through the triangle is going through at a 90 degree angle, u can see that by the small square, and u know it's in the middle bc of the short lines on AD and DC, the short lines means that they are congruent, so:

5x = 4x + 3

subtract 4x from both sides

x = 3

Now u have x, put it in the equation

5x = 5(3) = 15

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Purslane bought 350 rolls of toilet paper for the whole year. How many rolls of toilet paper per month is that?
siniylev [52]

Answer:

29

Step-by-step explanation:

350 divided by 12 months

equals 29.

5 0
3 years ago
Read 2 more answers
3 times negative 2 subtract 5 over negative 4
Nonamiya [84]
1/4 should be the answer :)
5 0
3 years ago
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The heights of 1000 students at a local school were recorded and found to be approximated by the normal curve below. Which answe
Vlada [557]

Answer:

The mean of the distribution of heights of students at a local school is 63 inches and the standard deviation is 4 inches.

Step-by-step explanation:

The normal curve approximating the distribution of the heights of 1000 students at a local school is shown below.

For a normal curve, the mean, median and mode are the same and represents the center of the distribution.

The center of the normal curve below is at the height 63 inches.

Thus, the mean of the distribution of heights of students at a local school is 63 inches.

The standard deviation represents the spread or dispersion of the data.

From the normal curve it can be seen that values are equally distributed, i.e. the difference between two values is of 4 inches.

So, the standard deviation is 4 inches.

7 0
3 years ago
Write an equation for the line that passes through the points (-10, 4) and (-16, 7).
Lena [83]
Y= -1/2x -1

first use the formula y2-y1/ x2-x1
then plug in (-10, 4) and (-16, 7) into the formula so it should look like 7-4/ -16 +10
that should simplify down to -1/2
Next plug one of the points into the new formula y=-1/2x +b to find B
3 0
3 years ago
Modeling real life last week you finish level to of a video game and 32 minutes today you finish level 2 in 28 minutes what is t
rusak2 [61]

Answer:

  -12.5%

Step-by-step explanation:

The percentage change in your time can be computed using ...

  pct change = ((new value)/(old value) -1) × 100%

  = (28/32 -1) × 100%

  = (0.875 -1) × 100% = -12.5%

The time to finish level 2 decreased by 12.5%.

6 0
3 years ago
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