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babunello [35]
3 years ago
15

Which point is a solution of x^2 + y^2 > 49 and y ≤ –x^2 – 4 ?

Mathematics
1 answer:
Inga [223]3 years ago
3 0

Answer:

C. 1, -9

Step-by-step explanation:

I just put it on desmos

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Two trains 500 miles apart accidentally are on the same track heading toward each other. The passenger train is traveling 80 mph
Natalka [10]

Answer:

2 miles

Step-by-step explanation:

Their combined speed (speed of closure) is 80 mph + 40 mph = 120 mph.

120 mi/h = 120 mi/(60 min) = 2 mi/min

The distance between the trains at the 1-minute mark is ...

(1 min) · (2 mi/min) = 2 mi

They were warned when two miles apart.

3 0
3 years ago
What is the solution to the system of equations?
elixir [45]

Answer:

No solution

Step-by-step explanation:

-3x-4y-3z=-7\\2x-6y+2z=3\\5x-2y+5z=9\\\\

Lets consider the equation 2.

Here we multiply the LHS and RHS with (-1).

-3x-4y-3z=-7\\-(2x-6y+2z)=-3\\5x-2y+5z=9\\\\

Hence,

-3x-4y-3z=-7\\-2x+6y-2z=-3\\5x-2y+5z=9\\\\

When we add the equations we get,

0x+0y+0z=-10+9\\Hence,\\0=-1

As 0 doesn't equal to -1, answer is d) No solution

6 0
3 years ago
A recipe for 8 muffins requires 2 cups of flour how many muffins per cup of flour
Lyrx [107]

Answer:

4 muffins

Step-by-step explanation:

just divide 8 by 2 or see how many times 2 can go into 8.

5 0
3 years ago
Read 2 more answers
Can u please help me solve? I'm reviewing for finals.
Black_prince [1.1K]

Given:

Consider the given graph as a reference of the solution.

To find:

-3(u\cdot v)

Explanation:

By analyzing the graph, we can define the coordinate of vector u and v:

\[\begin{align} & \vec{u}=(-8,-9)-(0,0)=(-8,-9) \\  & \vec{v}=(3,7)-(0,0)=(3,7)\end{align}\]

Now, let perform the dot product of two vectors,

\begin{gathered} u\cdot v=(-8,-9)\cdot(3,7) \\ u\cdot v=(-8)(3)+(-9)(7) \\ u\cdot v=-24-63 \\ u\cdot v=-87 \end{gathered}

Now, perform the required operation,

\begin{gathered} -3(u\cdot v) \\ =-3(-87) \\ =261 \end{gathered}

Final answer:

Hence, the required solution is:

-3(u\cdot v)=261

8 0
1 year ago
you want to buy some rice. A 6 ounce package costs $2.22. A 15-ounce package costs $5.25. A 22-ounce package costs $7.92. Which
Lerok [7]

Answer:

A. 6 ounce divide$ 2.22 = 0.37 per ounce

B. 15 ounce divide $ 5.25 = 0.35 per ounce

C. 22 ounce divide $7.92 = 0.36 per ounce

So my answer is Package B which is 15 ounce package $ 5.25

7 0
4 years ago
Read 2 more answers
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