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3 years ago

12

PLEASE HELP ME! IT A TEST AND THE TEACHER WAITING ON ME!! I NEED ANSWERS QUICK I HAVE 5 PICTURES SO LOOK PLEASE TECHNOLOGY HISTO

RY PLEASE GIVE ME RIGHT ANSWERS I'M FAILING HIS CLASS

1 answer:

Helga [31]3 years ago

7 0

Answer:

the only one that i know is skill that is D Something you have already developed

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Solving quadratic equations using square roots <br><br> (2/5)(x+3)^2=5

Slav-nsk [51]

$x = - 3 + \frac{5 \sqrt{2} }{2} \\ - 3 - \frac{5 \sqrt{2} }{2}$
$x = .5355339 \\ - 6.5355339$

I think that's what your looking for

6 0

3 years ago

On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 106 and a standard deviatio

DENIUS [597]

Answer:

Step-by-step explanation:

N(106,14²)

(calculated using excel, let me know if you were supposed to use a normal table) = 0.4715

85.34

Q1:96.56

Q3:115.44

IQR (which is Q3-Q1)= 115.44-96.56= 18.88

5 0

2 years ago

Will mark brainliest for area.

Elena L [17]

Answer:

c

Step-by-step explanation:

first, find the area of the rectangle thing,

A = lw

14 x 8

112

but, there is a semicircle in it so you need to subtract that from it:

A = πr^2/2

A = π(4)^2/2

A = π16/2

A = 8π

A ≈ 25.132741228718346

then subtract that area from the area of the rectangle:

112 - 25.132741228718346

86.867258771281654

or about 89.9

6 0

3 years ago

A box contains two purple marbles nine orange marbles and seven yellow marbles if you pick two without looking what is the proba

maw [93]

Answer:

1/4

Step-by-step explanation:

First, add up the marbles:

2 + 9 + 7 = 18

Multiply by 2 because you pick two:

18 × 2 = 36

Simplify:

9/36 = 3/12 = 1/4

Hope this helped.

8 0

3 years ago

The perimeter of a rectangle is 78cm.

mestny [16]

Answer:

17 cm

Step-by-step explanation:

P=2L+2W

L=22, P=78 we want to find W

78=2(22)+2W

78=44+2W

34=2W

W=17 cm

3 0

3 years ago