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2 years ago

Through: (-2, -1), slope = -1

Mathematics

1 answer:

oksano4ka [1.4K]2 years ago

7 0

y= -1x -3

that's equation of the line

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Rosa's test scores are 78, 92, 88, and 89. What must she score on her next test to have an average of 90? A) 95 B) 97 C) 99 D) 1

Morgarella [4.7K]

Answer: D

Step-by-step explanation:

Let x represent the score on her next test

$\frac{78 + 92 + 88 + 89 + x}{5} = 90$

$(5)\frac{78 + 92 + 88 + 89 + x}{5} = (5)90$

78 + 92 + 88 + 89 + x = 5(90)

347 + x = 450

-347 -347

x = 103

3 0

3 years ago

-3x-4y=12 just do it

allochka39001 [22]

Answer: X intercept: (-4,0) Y Intercept: (0,-3)

Step-by-step explanation: i dont know if thats how it was suppose to be done or not but that is just the intercepts for it.

6 0

1 year ago

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Erica collected a total of $180 for her favorite charity over the first 3 months of the year. She collected the same amount in t

ankoles [38]

X+x+3x= 180
5x= 180
x= 36

3(36)= 108
Your answer is D. $108

4 0

3 years ago

Read 2 more answers

Really need help on my correction if anyone know please help!!

Olin [163]

Answers:
Question 19: 177 bpm
Question 20: 95˚F

Explanations:
Question 19:
You had the formula set up properly like this:
$R = \frac{885 \sqrt{25} }{25} = \frac{885(5)}{25} = \frac{4425}{25}$
This is where you went wrong - I don't know exactly what you did, but your division of 4425 ÷ 25 is wrong. You should have ended up with 177 which is the correct answer.
Question 20:
You had the formula set up correctly again, and merely used the wrong sign when adding 32.
$F = \frac{9(35)}{5} + 32 = \frac{315}{5} + 32$
This is where you went wrong. You subtracted 32 from 63 when you should have added it. (See red circle on your subtraction.)
63 + 32 = 95˚F

7 0

3 years ago

This graph represents a linear function.

Rudik [331]

Answer:

y=2x-2

Step-by-step explanation:

3 0

2 years ago

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