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3 years ago

Help me please I’ll give brainlest if it right

Mathematics

2 answers:

beks73 [17]3 years ago

8 0

Answer:

it' should be 0.15 have a great day

charle [14.2K]3 years ago

7 0

Answer:

0.75

Step-by-step explanation:

There are 8 tiles total. 2 of them are blue A. 6 of them are NOT blue A.

The chances of not drawing a blue A is 6/8 or 0.75

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Use the table to find the slope of the line *

LiRa [457]

Answer:

u need to put pictures?

Step-by-step explanation:

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4 0

2 years ago

Find the perimeter of the quadrilateral.

levacccp [35]

Question:

Find the perimeter of the quadrilateral. if x = 2 the perimeter is ___ inched.

The complete figure of this question is attached below

Answer:

<h3>The perimeter of the quadrilateral is 129 inches</h3>

Solution:

The complete figure of this question is attached below

Given that, a quadrilateral with,

Side lengths are:

$4x^2 + 8x\ inches \\\\3x^2-5x+20\ inches \\\\7x + 30\ inches \\\\31\ inches$

The values of the side lengths when x = 2 are

$(4x^2+8x)=(4\times 2^2+8\times 2)=(4\times 4+16)=16+16=32\ inch\\\\(3x^2-5x+20)=(3\times 2^2-5\times 2+20)=(3\times 4-10+20)=12+10=22\ inch\\\\(7x+30)=(7\times 2+30)=14+30=44\ inch$

Perimeter of a quadrilateral = Sum of its sides

Perimeter of given quadrilateral = 32 + 22 + 44 + 31 = 129 inches

Thus perimeter of the quadrilateral is 129 inches

5 0

3 years ago

The calibration of a scale is to be checked by weighing a 13 kg test specimen 25 times. Suppose that the results of different we

Natali5045456 [20]

Solution :

a).

Given : Number of times, n = 25

Sigma, σ = 0.200 kg

Weight, μ = 13 kg

Therefore the hypothesis should be tested are :

$H_0 : \mu = 13$

$H_a : \mu \neq 13$

b). When the value of $\overline x = 12.84$

Test statics :

$Z=\frac{(\overline x - \mu)}{\frac{\sigma}{\sqrt n}}$

$Z=\frac{(14.82-13)}{\frac{0.2}{\sqrt {25}}}$

$=\frac{1.82}{0.04}$

= 45.5

P-value = 2 x P(Z > 45.5)

= 2 x 1 -P (Z < 45.5) = 0

Reject the null hypothesis if P value < α = 0.01 level of significance.

So reject the null hypothesis.

Therefore, we conclude that the true mean measured weight differs from 13 kg.

3 0

3 years ago

Can somebody match these for me .

Harlamova29_29 [7]

From left to right - (-2,6) (4,1) (-2,5) top (1,-3) bottom (-4,-1) (2,-5)

8 0

3 years ago

5t 8=43 whats t.I WILL GIVE 50 POINTS AND IF YOU DONT RECEIVE THE POINTS TELL ME AND I WILL GIVE THEM.PLZ HELP MEEEEEEEEEEEEEEEE

lawyer [7]

==> I can't be sure of the equation. There's a blank space
      between '5t' and '8', where an operation must be.
   I think the operation is more likely ' + ' (addition). Brainly usually
   does show the ' - ' if it's subtraction, but goes blank if it's addition.
   Tell you what I'll do: Since you sound so desperate, and you're being
   so generous with your points, I'll show you how to figure it out both ways.

----------------------------------------

If it's subtraction:    5t - 8 = 43

Add 8 to each side: 5t = 51

Divide each side by 5 : t = 51/5

   t    = 10 and 1/5

--------------------------------------------

If it's addition: 5t + 8 = 43

Subtract 8 from each side:   5t = 35

Divide each side by 5 : t    = 7

5 0

3 years ago

Read 2 more answers