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Talja [164]
3 years ago
6

Help please and this time please put an explanation just don't only say the answer thank you

Mathematics
1 answer:
coldgirl [10]3 years ago
5 0

✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽

➷ T\boxed{4} B\boxed{24}

✽ Ok, so B is the number of boys and T is the number of teachers.

➷ t \div ( B + 18) = \frac{2}{21}

\frac{B}{18} = \frac{4}{3}

✽ Then solve the second equation for B.

➷ B = 24

✽ Plug into the first equation to find T.

➷ T \div (24 + 18) = \frac{2}{21}

T = 4

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ May ♡

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Simplify the following expression. (10-4i)(4-5i)+(-15+20i)
Vikki [24]

Answer:

5-46i

Step-by-step explanation:

1. Multiply (10-4i) and (4-5i), I recomnd using foil:

40-50i-16+20i^2 + (-15+20i)

2. Remove the parenthesis around -15+20i

*we can do this since there is a "+":    

40-50i-16+20i^2 + (-15)+20

3. Simplify i^2

* i^2 is -1 by textbook defination:

40-50i-16+20(-1) + (-15)+20

4. Simplify

40-50i-16-20 + (-15)+20

6. Combine like terms:

-5-50i-16i+20i

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3 0
3 years ago
Which statement best explains whether the table represents a linear or nonlinear function?
Marta_Voda [28]

Answer: A.) It is a linear function because there is a constant rate of change in both the input and output values.

============================================================

Explanation:

Note how x is decreasing by 3 each time

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  • -5-3 = -8
  • -8-3 = -11

At the same time, y is also decreasing by 3 each time

  • 7-3 = 4
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This means we have a linear function. We have,

slope = (change in y)/(change in x)

slope = (-3)/(-3)

slope = 1

Recall that slope is another term for rate of change, so a constant slope means we have a constant rate of change.

----------------

Another way to find the slope is to pick any two points from the table and use the slope formula

m = (y2 - y1)/(x2 - x1)

You should find that any two points you pick will lead to a slope of 1. I recommend you try out all possible pairs to help convince yourself the slope is 1.

7 0
3 years ago
What is the GCF of 104 and 117
solong [7]

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Step-by-step explanation:

104 divided by 13 = 8

117 divided by 13 = 9

13 in this case, is the only number that can be divided in BOTH numbers.

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2) according to the item 1:

sinx+cosx=^+_-\sqrt{1+2*\frac{3}{8}} =^+_-\sqrt{\frac{7}{4}}=^+_-\frac{\sqrt{7} }{2}.

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Hello :
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