3 years ago

Select the correct difference. -3z 5 - (-7z 5) -10z5 -4z5 4z5 4z

Mathematics

2 answers:

bezimeni [28]3 years ago

8 0

-10z5 is the answer.

Alinara [238K]3 years ago

3 0

<span>-10z5 is the answer. </span>

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I need a little help

yanalaym [24]

Answer:

450 simple

Step-by-step explanation:

3 0

3 years ago

Which equation represents the circle described? (in picture)

Sedaia [141]

You are right. In circle equation we have =r² so the correct answer will be C od D. But we have to calculate the center of a circle.

$x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24$

Complete the square:

$x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2$

And we have:

$(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}$

So the answer is C (the same left side of equation).

6 0

3 years ago

Tanner earns $14.50 per hour for the first 8 hours he works each day. For every hour worked over 8, he earns 1.75 of his normal

bogdanovich [222]

Answer:

167.19

14.50 x 8 = 116.00

14.50 + 1.75 = 16.25 per hour overtime

16.25 × 3.15 hour overtime = 51.19

116.00 + 51.19 = 167.19

Step-by-step explanation:

7 0

3 years ago

A 2-pack of plastic flower pots costs $8.90. What is the unit price?

I am Lyosha [343]

Answer:

$0.79

Explanation:

1.58/2= 0.79

8 0

3 years ago

Read 2 more answers

A retail chain lines its parking lots depending on the types of vehicles driven by local shoppers. Large trucks and SUVs require

Free_Kalibri [48]

Data is collected on the types of vehicles

this is cross sectional data

Time is not relavant for this data and hence cannot be time series data.

from the given information, the variable is type of vehicle which is categorical data

this data is only about the more frequent vehicles the chain cannot ignore the vehicles which are not parked

7 0

3 years ago