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3 years ago

11

(3.2 x 8.1) + (3.2 x 1.9)= x (8.1 + 1.9)

1 answer:

marin [14]3 years ago

7 0

Answer:

oh god i uh-

Step-by-step explanation:

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What is the equation of the circle with center (-6,7) that passes through the point (4,-2). A. (x+6)^2+(y-7)^2=181 B. (x-6)^2+(y

pychu [463]

The equation of a cricle passing through (h,h) and with radius r is
$(x-h)^2+(y-k)^2=r^2$
so

cente ris (-6,7) and passing through (4,-2)
$(x-(-6))^2+(y-7)^2=r^2$
$(x+6)^2+(y-7)^2=r^2$
subsitute (4,-2) to find r^2

$(4+6)^2+(-2-7)^2=r^2$
$(10)^2+(-9)^2=r^2$
$100+81=r^2$
$181=r^2$

so it is

$(x+6)^2+(y-7)^2=181$
A is the answer

3 0

3 years ago

Pls Help me answer these questions. Brainliest for the correct person who answers each question correctly.

ahrayia [7]

Q1.) A. 12
Q2.) A. $\frac{7}{10}$
Q3.) C. A probability near 1 indicates a likely event
Q4.) D. 5

6 0

3 years ago

Read 2 more answers

739/1000 as a decimal

FrozenT [24]

0.739 is the answer that I got (this is not a rounded answer by the way)
hope it helps :)

3 0

3 years ago

Read 2 more answers

Do question 1 if have time go to question 2 plz show work thx

AleksandrR [38]

Hi
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5 0

3 years ago

Working alone and at a constant rate, Machine A takes 3 hours to create a widget. Machine B, working alone and at a constant rat

PilotLPTM [1.2K]

Answer:

Time required by Machine B to create a widget = 4 hours

Step-by-step explanation:

Time taken by Machine A ( $T_{A}$ ) = 3 hours

Time taken by Machine B ( $T_{B}$ )= x hours

Time taken by both machines by working together = 12 hours

The time required to both machines by working together to finish a task is given by the formula = $\frac{T_{A} {T_{B} } }{T_{A} + T_{B} }$

Put the values in above formula we get

⇒ T = $\frac{3 x}{3 + x}$

⇒ 12 = $\frac{3 x}{3 + x}$

⇒ 36 + 12 x = 3 x

⇒ x = - 4 hours

This is the time required by Machine B to create a widget.

8 0

3 years ago