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3 years ago

•Need help, multiple choice•

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

8 0

Answer:

A;H;D;G

Step-by-step explanation:

Altitude is a line from a vertex that intersects a side at a 90 degree angle. DE is the only altitude shown

Perpendicular bisectors divide a side into 2 congruent pieces, at a 90 degree angle. GB is the only perpendicular bisector shown.

An angle bisector is a line that divides an angle into 2 angles with the same measure. CF is the only angle bisector shown.

A median is a line that goes through a vertex and divides a side into 2 congruent lengths. AB is the only such example.

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\dfrac12(10x + 20y +10z) = 2 1 (10x+20y+10z)=start fraction, 1, divided by, 2, end fraction, left parenthesis, 10, x, plus, 20

iragen [17]

Answer:

5x + 10y + 5z

Step-by-step explanation:

Given the expression

$\frac{1}{2}(10x+20y+10z)\\$

Expand the parenthesis using the distributive law;

$\frac{1}{2}(10x)+ \frac{1}{2}(20y)+\frac{1}{2}(10z)\\= \frac{10x}{2} + \frac{20y}{2} + \frac{10z}{2}\\= 5x + 10y + 5z$

Hence the required solution is 5x + 10y + 5z

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3 years ago

Find S25 for (-7) + (-2) + 3 + 8 +...

elena-14-01-66 [18.8K]

$a_1=-7 \\ a_2=-2 \\ \\ d=a_2-a_1=-2-(-7)=5 \\ \\ \\ S_{25}= \cfrac{2(-7)+(25-1)5}{2}\cdot25 = \cfrac{-14+120}{2}\cdot25 =\cfrac{106}{2}\cdot25 =1325$

Your answer is B. 1325

3 0

3 years ago

What type of correlation is shown in the graph?

denis23 [38]

B, there is a negative correlation

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3 years ago

Read 2 more answers

Listed below are prices in dollars for one night at different hotels in a certain region. Find the range, variance, and standar

Vanyuwa [196]

Answer:

Range = $115

Variance = $1915.2857

Standard deviation = $43.764

Step-by-step explanation:

Given the data:

234 160 119 131 218 207 146 141

Arranging in ascending order :

119, 131, 141, 146, 160, 207, 218, 234

The range = maximum - minimum

The range = 234 - 119 = 115

The variance :

Σ(x - mean)²/n-1

The mean = Σx / n

The mean = 1356 / 8 = 169.5

Variance :

Σ(x - mean)² = (119-169.5)² + (131-169.5)² + (141-169.5)² + (146-169.5)² + (160-169.5)² + (207-169.5)² + (218-169.5)² + (234-169.5)² = 13407

n - 1 = 8 - 1 = 7

Variance = 13407 / 7 = 1915.2857

Standard deviation = √variance

Standard deviation = √1915.2857

Standard deviation = $43.764

8 0

3 years ago

james borrows Php 700000 and promises to pay the principal and interest at 15% compounded monthly. How much must he repay after

Licemer1 [7]

Answer:

A = $ 1,987,379.10 + 700,000= $2,687,379.10

Step-by-step explanation:

15% = 0.15 rate per tear

A = P (1+r/n)^nt

A = 700,000 (1+0.015/12)^12*7

A = 700,000 (1+0.0125)^84

A = 700,000 ((0.9875)^84

A = 700,000 (2.839113)

4 0

2 years ago