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3 years ago

Help with functions, i only need help with #2

Mathematics

1 answer:

olasank [31]3 years ago

8 0

Let's look at the first one, then you can practice the rest on your own. So, h(0) = - 2 because the number in h() is which number you search for on the bottom row. Then you look at the number above that bottom number, which, in this case is - 2, and that number is your answer.

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What is the solution to the system of equations?

timama [110]

Answer:

x=-1 and y=4

Step-by-step explanation:

y=-3x+1

2x+5y=18

Put x and y on the same side for 1st equation

3x+y=1

2x+5y=18

Multiply top by -5

-15x-5y=-5

2x+5y=18

Add both equations onto each other

-13x=13

x=-1

Plug x=1 into any equation used

2(-1)+5y=18

-2+5y=18

5y=20

y=4

8 0

4 years ago

Help me !!!!!!! Please!!!!

Alina [70]

The correct answer is C.

Hope this helps

4 0

4 years ago

Which two values of x are roots of the polynomial below x^2 - 11x + 13

matrenka [14]

Because 13 is a prime number, we cannot use the AC method to simplify.

We can instead use the quadratic formula.

$\frac{-b +/- \sqrt{b^2 - 4ac} }{2a}$

11 +/- √121 - 52 / 2

11 +/- √69 / 2

11 +/- 8.3 / 2

(11 + 8.3)/2 = 9.65

(11 - 8.3)/2 = 1.35

<h3>The roots of the polynomial are 9.65 and 1.35.</h3>

7 0

3 years ago

Read 2 more answers

A planned community has 150 homes, each with an automatic garage door opener. The door opener has seven switches that a homeowne

alexdok [17]

Answer:

The probability that at least two homeowners will set their switches to the same code is 100%.

Step-by-step explanation:

Consider the provided information.

The total number of code can be set with 0 or 1 is:

2×2×2×2×2×2×2=128

There are 128 different codes.

The probability that code is unique is 1/128

Now, the probability that all codes are unique is:

$[\frac{1}{128}]^{150}$

Hence, the probability that all the codes are not unique is:

$1-[\frac{1}{128}]^{150} \approx 1$

Because the value of $[\frac{1}{128}]^{150}$ is very small

As they can set 128 different codes and there are 150 homes. So, at least two homeowners will set their switches to the same code is 100%.

Hence, the probability that at least two homeowners will set their switches to the same code is 100%.

5 0

3 years ago

All 5 students in Mrs. Awful's class got a 50 on the test. For the next test, one of the students got 100 but the remaining 4 st

Anarel [89]

Data on first test: 50, 50, 50, 50, 50
Mean = 250 / 5 = 50

In the next test, Data is: 50, 50, 50, 50, 100

Mean = sum of data / number of data
Mean = 50 + 50 + 50 + 50 + 100 / 5
M = 300 / 5
M = 60

In short, Your Answer would be 60

If You're looking for combined progress (average of class then, it would be: 50 + 60 /2 = 110/2 = 55

Hope this helps!

5 0

4 years ago