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4 years ago

What is the missing justification?

Mathematics

1 answer:

Vladimir [108]4 years ago

3 0

Answer:

The missing justification is the transitive property.

Step-by-step explanation:

The missing justification is the transitive property. The transitive property states that: If a = b and b = c, then a = c.

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Factor z^2+7z-18<br> what is the factor expression?

kobusy [5.1K]

Answer:

z²+7z-18=0.

z²+9z-2z-18=0.

(z²+9z)-(2z-18)=0.

z(z+9)-2(z+9)=0.

(z-2)(z+9)=0.

(z-2)=0 or (z+9)=0.

z-2=0 or z+9=0.

z=2 or z=-9.

6 0

3 years ago

The table represents the function 7 = 5x- Output ) Input (3) -2 -18 8 x 1 2 2 12 8 2 2. What is the input when the output is 12

notsponge [240]

$y_{-2}=5\cdot(-2)-8=-10-8=-18$ $y=5x-8$ $12=5x-8$ $12+8=5x$ $20=5x$ $x=\frac{20}{5}$ $x=4$

6 0

2 years ago

Somebody please help

Nikolay [14]

I don’t want to bother you, but you posted this in “mathematics” but it is not math

7 0

3 years ago

Goofy wants to buy white rice. The store has 4 different sizes of white rice bags: $2.00 for 1 pound, $4.25 for 2 pounds, $9.50

Tanzania [10]

Answer:

20 dollars for 12 pounds.

Step-by-step explanation:

This is a critically important question to know the answer to. It is used almost every day by good shoppers.

The trick is to get everything down to 1 pound.

$2.00

$2.00 per pound. The question is the answer.

$4.25

$4.25 / 2 pounds = $2.13 rounded.

$9.50

$9.50 / 5 = $1.90

$20

$20/12 = $1.67 rounded

8 0

3 years ago

Bruce is going to call one person from his contacts at random. He has 25 total contacts. 20 of those contacts are from his neigh

Naya [18.7K]

<h3>P(call a person not from his neighborhood) = $(\frac{1}{5} )$ </h3>

Step-by-step explanation:

Here, the total number of contacts in the list if Bruce = 25 contacts

The total number of neighbors in the contact = 20 people

Now, let E: Event of calling a person from his neighborhood

So, P(E) = $\frac{\textrm{Total Favorable Outcomes}}{\textrm{Total Outcomes}} = \frac{20}{25} = (\frac{4}{5})$

So, the probability of calling a person from his neighborhood is $(\frac{4}{5} )$

⇒P(E) = $(\frac{4}{5} )$

Now,as we know: P(E) + P(not E) = 1

So, the probability of NOT calling a person from neighborhood

= 1 - probability of calling a person from his neighborhood

$= 1 - (\frac{4}{5}) = \frac{5-4}{5} = (\frac{1}{5})$

⇒P( not E) = $(\frac{1}{5} )$

Hence, P(call a person not from his neighborhood) = $(\frac{1}{5} )$

5 0

3 years ago

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