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2 years ago

Circle A has center of (4, 5), and a radius of 3 and circle B has a center of (1, 7), and a radius of 9.

Mathematics

2 answers:

Elanso [62]2 years ago

7 0

Answer:

d.is the answer

Step-by-step explanation:

stellarik [79]2 years ago

3 0

Answer:

Step-by-step explanation:

You need them to have the same radius

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9. The ratio of boys to girls in Mrs. Reeves's class is 4 to 5. There are 20 girls in the

xxTIMURxx [149]

Answer:

boys : girls

4 : 5

multiply by 4

16 : 20

<u>total = 36</u>

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2 years ago

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Can I please please get help with this?

Hatshy [7]

Answer:

the answer is 42

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3 years ago

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Select all the equations that have the same solution as the equation 3x−12=24

evablogger [386]

Answer:

3x=36, so x=12

Step-by-step explanation:

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2 years ago

(5 pts) A quadratic function f is given by f(x) = ax2 + bx + c where a is not 0. Select all

Vsevolod [243]

Answers:

a) True. Plug in x = 0 and it leads to y = c. Therefore, the point (0,c) is on the parabola.
b) False. Plug in y = 0 and apply the quadratic formula. One x intercept may sometimes be x = c, but it could easily be other values as well. Or perhaps you may not get any real number solutions at all. See part d) below.
c) True. If a < 0, then the leading coefficient is negative. Overall, both endpoints will tend toward negative infinity to produce a parabola that opens downward.
d) False. The quadratic may have one x intercept or it may not have any x intercepts at all. It depends on what the discriminant d = b^2 - 4ac is equal to. If d < 0, then we have no x intercepts. If d = 0, then we have exactly 1 x intercept. If d > 0, then we have two different x intercepts.
e) True. The vertex's x coordinate is -b/(2a). If b = 0, then the x coordinate of the vertex is 0. The vertical line x = 0 is directly on top of the y axis.

8 0

2 years ago

While setting up a fireworks display, you have a tool at the top of the

atroni [7]

Answer:

0.79 sec

Step-by-step explanation:

Given there is a tool at the top of the building which is dropped by a worker and it follows the following equation at every instant of time .

$h(t)=-16t^{2} +h_{0}$

where $h_{0} =10 feet$

We know that this height is measured from the base of the building which means that when the tool reaches the bottom of the building it has h = 0 feet.

Let this be done at time t

h(t) = 0

$-16t^{2} +10=0$

$t^{2} =\frac{10}{16}$

$t=\frac{\sqrt{10} }{4}$

t = 0.79 sec

Therefore the total time taken by the tool to reach the bottom of the building is 0.79 sec.

8 0

3 years ago