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2 years ago

Write the equation of the line, in slope-intercept form, that contains the points (-1,-2) and (1,2)

1 answer:

4 0

Slope intercept is y=mx+b
m=slope
slope if found by
m=(y1-y2)/(x1-x2)
(x,y)
(-1,-2) and
(1,2)
x1=-1
y1=-2
x2=1
y2=2

m=(-1-1)/(-2-2)
m=-2/-4
m=1/2

y=1/2x+b
solve fo by subsituting one x value
(1,2)
x=1
y=2
2=1/2(1)+b
2=1/2+b
subtract 1/2
3/2=b

equation is
y=1/2x+3/2

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Samantha has 4 boxes of action figures. Each box contains 198 figures. which expression shows a strategy Samantha can use to fin

Lynna [10]

Number of action figures each box contains = 198

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The product can be found as = $4\times198$

hence, option 2 is the correct answer.

4 x (200 - 2) = $4\times198$

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2 years ago

I need help asap! Thank you!

Zarrin [17]

Answer:

A. 55°

Step-by-step explanation:

Complementary angles are angles that add up to give us 90°.

Since <A and <B are complementary angles, it implies that:

m<A + m<B = 90°

If m<A = 35°, therefore:

35° + m<B = 90°

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2 years ago

Determine the image of the point (5, -2) under a rotation of 90 degrees about the origin.

Galina-37 [17]

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(2,5)

Answer: A

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2 years ago

The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,

bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

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So, s would be

$s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075$

So, the value of test statistic would be

$t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90$

Hence, the test statistic is t= -0.90.

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2 years ago

I need halp... QUESTION: tell weather the two figures are congruent. Explain your reasoning

Anastaziya [24]

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2 years ago

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