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3 years ago

Which point is NOT correctly placed on this number line?

Mathematics

2 answers:

SSSSS [86.1K]3 years ago

5 0

Answer: Q is incorrect.

Explanation:

P = -24/3
(P = 24 divided by 3 which is 8, so P= -8)

Q = -9/2
(Q = 9 divided by 2 which is 4.5, Q= -4.5)

R= 7/2
(R= 7 divided by 2 which is 3.5, Q= 3.5)

S= 15/3
(S= 15 divided by 3 (= 5), so S= 5)

So... Looking at the number line, Q is actually on the point -3.5 instead of where it should be, -4.5. It is easy to miss at first glance but it counts backwards into the negative numbers.

Therefore point Q is not correctly placed on the number line.

I hope this helps :)

Tom [10]3 years ago

3 0

Answer:

Point R at 7/2

If it is wrong then the other answer is probably Point Q.

I hope I could help.

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grigory [225]

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then y is the Base.

If the expression is: yn
then y is the product.

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3 years ago

Find the coordinate that divides the directed line segment from A(-2,-4) to B(8,1) in the ratio of 2 to 3

zalisa [80]

We have that
A(-2,-4) B(8,1) 

let
M-------> the coordinate that divides the directed line segment from A to B in the ratio of 2 to 3

we know that

A--------------M----------------------B
2 3
distance AM is equal to (2/5) AB
distance MB is equal to (3/5) AB
so

step 1
find the x coordinate of point M
Mx=Ax+(2/5)*dABx
where
Mx is the x coordinate of point M
Ax is the x coordinate of point A
dABx is the distance AB in the x coordinate
Ax=-2
dABx=(8+2)=10
Mx=-2+(2/5)*10-----> Mx=2

step 2
find the y coordinate of point M
My=Ay+(2/5)*dABy
where
My is the y coordinate of point M
Ay is the y coordinate of point A
dABy is the distance AB in the y coordinate
Ay=-4
dABy=(1+4)=5
Mx=-4+(2/5)*5-----> My=-2

the coordinates of point M is (2,-2)

see the attached figure

7 0

3 years ago

I need help on how to do this as soon as possible please

AfilCa [17]

Answer:

Step-by-step explanation:

m∠1 = m∠2 {Corresponding angles}

78 - 2x = 89 - 3x

Add 3x to both sides

78 - 2x + 3x = 89

78 + x = 89

Subtract 78 from both sides

x = 89 - 78

x = 11

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3 years ago

What is the equation of the function that is graphed as line b?

Juli2301 [7.4K]

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The y intercept is where the line crosses the y a is at x =0 which is 1

The equation would be y = 1/2x+ 1

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3 years ago

A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 48 specimens and counts the number of

baherus [9]

Answer: The open interval would be (31.4,42.5).

Step-by-step explanation:

Since we have given that

mean = 36.9

Standard deviation = 16.5

n = 48

At 98% confidence interval, z = 2.33

So, Interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=36.9\pm 2.33\dfrac{16.5}{\sqrt{48}}\\\\=36.9\pm 5.549\\\\=(36.9-5.5,36.9+5.6\\\\=(31.4,42.5)$

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3 years ago