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3 years ago

Help me with this pls

Mathematics

2 answers:

beks73 [17]3 years ago

8 0

The answer is B as I believe

Radda [10]3 years ago

7 0

The answer is b because it would be somewhere in between a right angle and an obtuse angle

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A contractor has submitted bids on three state jobs: an office building, a theater, and a parking garage. State rules do not all

german

Answer:

The following are the answer to this question:

Step-by-step explanation:

In the given question the numeric value is missing which is defined in the attached file please fine it.

Calculating the probability of the distribution for x:

$\to f(x) = 0.19\ for \ x=14\\\\\to f(x) = 0.29 \ for\ x=7\\\\\to f(x) = 0.38\ for \ x=1\\\\\to f(x)=0.14 \ for \ x=0\\$

The formula for calculating the mean value:

$\bold{ E(X)= x \times f(x)}$

$=14 \times 0.19+7 \times 0.29+1 \times 0.38+0\times 0.14\\\\=2.66 + 2.03+0.38+ 0\\\\=5.07$

$\bold{E(X^2) = x^2 \times f(x)}$

$=14^2 \times 0.19+7^2 \times 0.29+1^2 \times 0.38+0^2 \times 0.14 \\\\=196 \times 0.19+ 49 \times 0.29+1 \times 0.38+0 \times 0.14\\\\= 37.24+ 14.21+ 0.38+0 \\\\=51.83$

use formula for calculating the Variance:

$\to \bold{\text{Variance}= E(X^2) -[E(X)]^2}$

$= 51.83 - (5.07)^2\\\\= 51.83 - 25.70\\\\=26.13$

calculating the value of standard deivation:

Standard Deivation (SD) = $\sqrt{Variance}$

$= \sqrt{26.13} \\\\=5.111$

6 0

3 years ago

Pls help me with this

Yanka [14]

Answer:

Step-by-step explanation:

f(-7) = 5-(-7)=5+7=12

4 0

2 years ago

Read 2 more answers

F(x)=(x-3) ²+5 determine the vertex

____ [38]

Answer:

The vertex is (3,5)

Step-by-step explanation:

Brainliest please

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3 years ago

Francesca is afraid she won't have enough money to treat herself and two friends to a movie and snacks. Movie tickets cost $7.50

Archy [21]

The correct answer is C.
$8 + 8 + 8 + 3 + 3 + 3 + 3 + 3 + 3 = 42$

7 0

2 years ago

Find the sum and product of the roots of each equation of <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" id="TexFormula1" title=

Neko [114]

Answer:

$\huge\boxed{\sf S = 0, P = -16}$

Step-by-step explanation:

<u>Given the equation:</u>

$\sf x^2 -16 = 0$

Comparing it with $\sf x^2-Sx+P= 0$ , where S is the sum and P is the product.

So,

Sum = S = 0

Product = P = -16

Hope this helped!

<h2>~AnonymousHelper1807</h2>

7 0

3 years ago