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2 years ago

HELPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

zimovet [89]2 years ago

5 0

Answer:

1: 155

2: 222

3: 44

4: 132

5: 163

6: i dont know

7: 202

8:?

9: ?

hope this helped!

Step-by-step explanation:

dmitriy555 [2]2 years ago

4 0

<h3>answer:</h3>

1.)155

2.)222

3.)44

4.)132

5.)163

6.)93.92857142857142

7.)202

8.)112.9032258064516

9.)76.66666666666666

<h3>Step-by-step explanation:</h3>

Sana po makatulong( ˘ ³˘)♥︎

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I needs help with it please

BARSIC [14]

Answer:

d. ΔMNO

Step-by-step explanation:

In geometry, two figures are <u>congruent</u> if they are the <u>same shape and size</u> (they can also be a mirror image of each other). If they are the same shape but a <u>different size</u> (e,g, one is an enlargement or reduction of the other), then they are <u>similar</u>.

All the given triangles have the same interior angles, so we need to find a triangle with the same side lengths as ΔABC.

The only triangle that has the same side length as ΔABC is ΔMNO:
they both have bases of 8cm.

Therefore, ΔMNO is congruent to ΔABC.

5 0

1 year ago

Suppose that you were not given the sample mean and sample standard deviation and instead you were given a list of data for the

Troyanec [42]

Answer:

So, the sample mean is 31.3.

So, the sample standard deviation is 6.98.

Step-by-step explanation:

We have a list of data for the speeds (in miles per hour) of the 20 vehicles. So, N=20.

We calculate the sample mean :

$\mu=\frac{19 +19 +22 +24 +25 +27 +28+ 37 +35 +30+ 37+ 36+ 39+ 40+ 43+ 30+ 31+ 36+ 33+ 35}{20}\\\\\mu=\frac{626}{20}\\\\\mu=31.3$

So, the sample mean is 31.3.

We use the formula for a sample standard deviation:

$\sigma=\sqrt{\frac{1}{N-1}\sum_{i=1}^{N}(x_i-\mu)^2}$

Now, we calculate the sum

$\sum_{i=1}^{20}(x_i-31.3)^2=(19-31.3)^2+(19-31.3)^2+(22-31.3)^2+(24-31.3)^2+(25-31.3)^2+(27-31.3)^2+(28-31.3)^2+(37-31.3)^2+(35-31.3)^2+(30-31.3)^2+(37-31.3)^2+(36-31.3)^2+(39-31.3)^2+(40-31.3)^2+(43-31.3)^2+(30-31.3)^2+(31-31.3)^2+(36-31.3)^2+(33-31.3)^2+(35-31.3)^2\\\\\sum_{i=1}^{20}(x_i-31.3})^2=926.2\\$

Therefore, we get

$\sigma=\sqrt{\frac{1}{N-1}\sum_{i=1}^{N}(x_i-\mu)^2}\\\\\sigma=\sqrt{\frac{1}{19}\cdot926.2}\\\\\sigma=6.98$

So, the sample standard deviation is 6.98.

3 0

2 years ago

A lawn mower company wants to show how much time a homeowner can save by using a ride-on lawn mower instead of a push lawn mower

DanielleElmas [232]

A. F
b. T
c. T
d. T

1.5 Acres 2 Acres

42.5 ( 1.5 ) + 15 = 78.75 | 42.5 ( 2 ) + 15 = 100

78.5 ( 1.5 ) + 5 = 122.75 | 78.5 ( 2 ) + 5 = 162

6 0

1 year ago

2x+3=x+15x+6−5<br>Solve

Gnesinka [82]

Answer:

x = 1/7

Step-by-step explanation:

2x + 3 = x + 15x + 6 − 5

<em>Combine like terms and solve:</em>

2x + 3 = 16x + 1

-14x + 3 = 1

-14x = -2

x = 1/7

hope this helps!! p.s. i really need brainliest :)

4 0

2 years ago

Read 2 more answers

Circle D is below what is the arc measure of BC in degrees

maks197457 [2]

Answer:

84°

Step-by-step explanation:

$\because (13n - 16) \degree + (7n + 12) \degree + (6n)\degree \\= 360\degree \\ \\ \therefore \: (26n - 4) \degree= 360\degree \\ \\ \therefore \: 26n - 4= 360 \\ \\ \therefore \: 26n = 360 + 4 \\ \\ \therefore \: 26n = 364 \\ \\ \therefore \: n = \frac{364}{26} \\ \\ \therefore \: n = 14 \\ \\\because m\overset { \frown}{BC} = (6n)°\\ \\\therefore \:m \overset { \frown}{BC} =(6\times 14)° \\ \\ \huge \purple {\boxed {\therefore \:m\overset { \frown}{BC}= 84°}} \\$

4 0

3 years ago