2 years ago

System of Equations- pls help with the following problem

Mathematics

1 answer:

KatRina [158]2 years ago

6 0

Answer:

please mark me as brainlest

Step-by-step explanation:

b is the answers for the question

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Please help!! Select all the triangles that have an area of 8 square units in the picture. Explain how you know please?

Soloha48 [4]

Answer: A,B,D,E

Step-by-step explanation: All of them either have a base and height of 4, or if its E, it is 8 by2. The formula for solving a triangle is base x height divided by 2. In this case, the two sides have to equal 16, as the area is 16/2, or 8

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3 years ago

Please answer its urgent‼️‼️‼️

loris [4]

Answer:

-30 m

Step-by-step explanation:

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3 years ago

50 POINTS for both questions

love history [14]

Answer:

3. i think 15.5

4. 140*

Step-by-step explanation:

in number 4, d is a vertical angle to the angle measured at 140.

in number 3, QV=SV, so 17=4x-1 18=4x 18/4=x x=4.5

and TS=TQ, so 3(x) + 2 = 3(4.5) + 2 = 13.5 + 2 = 15.5 =TQ

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3 years ago

Read 2 more answers

Need help on numbers 10 and 11 please!! sos

Harlamova29_29 [7]

Volume of prism B=800*6³/8³
=800*27/64
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3 years ago

Help me find Sample variance and standard deviation

AnnZ [28]

First, find the mean. You'll need it to compute the variance.

$\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11$

The variance of the sample is then computed with the formula

$s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5$

The standard deviation is the square root of the variance, so

$s=\sqrt{35.5}\approx5.958$

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3 years ago