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2 years ago

X and y intercepts please

Mathematics

2 answers:

disa [49]2 years ago

3 0

X intercept- 3.5
y intercept- 2.5

Andrews [41]2 years ago

3 0

I believe y is 2.5 and x is 3.5

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Help me with this pleaseeeeeeeeeee

11Alexandr11 [23.1K]

Answer:

C (-3,5)

Step-by-step explanation:

hope this helps!

6 0

2 years ago

How to solve this problem?

valentinak56 [21]

Very nice handwriting but the math and English are confusing.

Let's assume we're told

$\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2$

The subscript is important.

I think we're told the similar sum with 11 gives the smallest possible value for the sum. This is a rather cagey way of telling us 11 is the mean of the nine points. The mean is the number which minimizes the sum of squared deviations.

$\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2 = \sum x_i^2 - 20 \sum x_i + 9(100)$

$\displaystyle \sum x_i^2= 20 \sum x_i - 900$

If 11 is the mean, the sum of the points is 9(11)=99.

$\displaystyle \sum x_i^2= 20 (99) - 900 = 1080$

Answer: 1080

6 0

2 years ago

Help please guys i need help

ra1l [238]

The area is found by multiplying the length by the width.

The original area = 60 x 40 = 2,400 square feet

He wants to make it 1/2 that size, so the new size would be 2,400 / 2 = 1,200 square feet.

To find the length divide the new area by the new width:

1,200 / 30 = 40

The new length should be 40 feet.

6 0

3 years ago

A pilot scheduled to depart at 4:00 pm, but due to air traffic, her departure has been delayed by 10 minutes. Air traffic contro

RUDIKE [14]

<h3>Answer: Choice A</h3>

y = (1/3)x+10

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

Explanation:

x = number of minutes of the original flight

Because the pilot travels 3 times faster than before, it means she travels 1/3 of the original time. If she took x minutes on the original flight, then she will take (1/3)x minutes for the new faster flight.

Then add on the 10 minute delay to end up with (1/3)x+10

5 0

1 year ago

Read 2 more answers

A^2+B^2=C^2 B=2. 1 C=2.9

Scilla [17]

Are you being asked to solve for A? B?
$A^{2} + B ^{2} = C^{2}$
$A ^{2} +B ^{2} =(2.9) ^{2}$
$A ^{2} + B^{2} =8.41$

Solve for A:
$A^2=8.41-B^2$
Take a plus of minus square root
A= $\sqrt{-b^2+8.41}$
A= $- \sqrt{-b^2+8.41}$

Solve B:
$A^2+B^2=8.41$
$B^2=-A^2+8.41$
Take plus or minus square roots
$B= \sqrt{A^2+8.41}$
$B= -\sqrt{A^2+8.41}$

3 0

2 years ago