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3 years ago

Someone PLS!! Help me. And do the one before it.

Mathematics

1 answer:

My name is Ann [436]3 years ago

6 0

The answer is b because one bottle is 2.50 and they bought 5 then it says they bought 2 scarfs for 2 for 10.

Final answer: B

Hope this helped :)

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-0.7=-7/9z help me pleasseeee!

9966 [12]

The answer is 0.9 if z is in the numerator and if it is in the denominator it is 1/9

7 0

2 years ago

I dint want you to answer can you just explain to me how I can answer this because my teacher doesn't explain

VARVARA [1.3K]

Answer:

Train B is traveling faster.

Step-by-step explanation:

To find which train is faster, divide the distance the train traveled by the elapsed time for each train:

Train A:

Distance traveled is 12.5 meters.

Elapsed time is 1 second.

12.5 ÷ 1 = 12.5

Train A travels 12.5 meters per second.

Train B:

Distance traveled is 100 meters.

Elapsed time is 4 seconds.

100 ÷ 4 = 25

Train B travels 25 meters per second.

25 is greater than 12.5, so train B travels faster.

3 0

2 years ago

Multiply.<br> (8x+3)(-3x - 5)<br> Simplify your answer.

mart [117]

Hopefully this will help!

6 0

3 years ago

What is the midpoint of the segment shown below?

Papessa [141]

B bro it b just trust I promise it b

4 0

3 years ago

N=4; 2i and 3i are zeros <br> f(-1)=50

Nonamiya [84]

Solution:- $\text{Let f(x) be any nth degree polynomial with n=4}\\$

$\text{Given that 2i and 3i are the zeroes of f(x)}$

$\text{so (x-2i) and (x-3i) are factors of f(x)}$

$\text{Since 2i is a zero of f(x) then its conjugate -2i is also a zero of f(x)}$

$\Rightarrow(x+2i) \text{is a factor}\\\text{Similarly, conjugate of 3i is -3i is also a zero of f(x) }\\\Rightarrow(x+3i)\text{is a factor}\\\text{So , }\\f(x)=k(x-2i)(x+2i)(x-3i)(x+3i)\\=k(x^2-(2i)^2)(x^2-(3i)^2)\\=k(x^2-4i^2)(x^2-9i^2)\\=k(x^2+4)(x^2+9)\\=k(x^4+13x^2+36)\\\text{As given}\\f(-1)=50\\\Rightarrow k((-1)^4+13(-1)^2+36)=50\\\Rightarrow k(1+13+36)=50\\\Rightarrow k(50)=50\\\Rightarrow k=1\\\text{So by substituting k=1 in f(x) we get ,}\\f(x)=(x^4+13x^2+36)$

6 0

3 years ago