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ratelena [41]
3 years ago
11

Please help with this!

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

9514 1404 393

Answer:

  -11

Step-by-step explanation:

DeYanna's cards are ...

  black: 2, 4, for a total value of 2+4 = 6

  red: 7, 10, for a total value of -(7+10) = -17

Then the total value of DeYanna's cards is ...

  6-17 = -11

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There are 32 people in the yearbook club

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Two nimbers have a product of 90 and a sum of 19. What are the two numbers?​
bulgar [2K]

Answer:

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2 years ago
For a function p(x)= x^2-9, what is the inverse function for the domain [0, infinity\
kkurt [141]
An inverse function is a function that reverses another function, so we have a function called:

p(x)

Then, the inverse function will be as follows:

p^{-1}(x)

Given that y = p(x), we need to isolate x in terms of y:

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So:

x=+\sqrt{y+9} and x=-\sqrt{y+9}

therefore, exchanging variables x and y:

y=+\sqrt{x+9} and y=-\sqrt{x+9}
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Which are the figures shown below.

7 0
3 years ago
Susan is writing a linear equation for the cost of her cell phone plan. In the first month, she talks for 52 minutes and is char
Alex787 [66]
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y is the cost of the phone plan, x is the cost per minute and b is the start cost.

so    19.41=25x+b for the first month
and  45.65=380x+b for the second month

solve both for b you get:
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19.41-25x=45.65-380x

solve for x

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rewrite the equation to calculate b, and where this time, the x is the number of minutes talked.

y=0.08x+b and plug in one of the two months

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Solve for b and b is 15.25

so the final equation is

y=0.08x+15.25  (answer B)
5 0
3 years ago
Is it (sss) (side side side ) Hypotenuse-Leg (HL), ssa?(sas) aaa,asa,aas?
Reil [10]
  • Here, both the triangles have equal sides.
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<u>Answer</u><u>:</u>

<u>SSS,</u><u> </u><u>congruent.</u>

Hope you could get an idea from here.

Doubt clarification - use comment section.

4 0
2 years ago
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