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3 years ago

15

Please, help im being timed !!!

1 answer:

Agata [3.3K]3 years ago

3 0

B (2x+5y=-10) is the answer.

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Solve the system of equations by using substitution. Give your final answer in the form of an ordered pair.

Goshia [24]

5x -2y = 26. We know that x = y + 4. Substitute the value of x in and you get 5y + 20 - 2y = 26 If yous simplify this you get 3y + 20 = 26
Take away 20 from both sides and you end up with 3y = 6
Now did use both sides by 3

You end up with y = 2
Now to find x you just simplify the value of y into x = y + 4. You end up with x = 2 + 4. Now you know that y = 2 and. X = 6

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3 years ago

A study conducted on 40,000 words in the English language found that about 6,670 words started with the letter T, which is the m

Jlenok [28]

Answer:

Required Probability= $\frac{^{6670}C_{20}}{^{40000}C_{20}}$

Step-by-step explanation:

We have been given the total 40,000 words

And the words that started with letter T is 6,670

We need to find the probability of the words beginning with T

Words beginning with T will be $^{6670}C_{20}$

Total words after choosing 20 unique words would be: $^{40000C_{20}$

$Probability=\frac{\text{words beginning with T}}{\text{total words}}$

$Probability=\frac{^{6670}C_{20}}{^{40000}C_{20}}$

Hence,

Required Probability= $\frac{^{6670}C_{20}}{^{40000}C_{20}}$

6 0

3 years ago

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jose has been saving for $9 wach week. today he spent $126 of the savings, and now he has $45 left. fir how long has he been sav

11Alexandr11 [23.1K]

126 + 45 = 171

171/9 = 9

9 days

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3 years ago

What is the equation in point-slope form of a line that passes through the points (−4, −1) and (5, 7) ? y+1=89(x+4) y+4=98(x+1)

maria [59]

The point-slope formula:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (-4, -1) and (5, 7).

Substitute:

$m=\dfrac{7-(-1)}{5-(-4)}=\dfrac{7+1}{5+4}=\dfrac{8}{9}\\\\y-(-1)=\dfrac{8}{9}(x-(-4))\\\\\boxed{y+1=\dfrac{8}{9}(x+4)}$

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3 years ago

Negative positive addition

Sever21 [200]

That is easy you do the addition and then what ever sign had the bigger number is the number the answer gets

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3 years ago

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