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3 years ago

I need help with my test of math

Mathematics

1 answer:

Valentin [98]3 years ago

5 0

(-1,7) is the intersection

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write the point-slope from of the line that passes through the points (-2,1) and (0,1) identify (x1,y1) as (-2,1) use the box pr

yanalaym [24]

Answer:

y - 1 = x

Step-by-step explanation:

Plug x, y and m into equation

y- y₁ = m(x-x₁)

find m: y₂-y₁/x₂-x₁ 1-1/0+2

0/2 = 0

I used the point (0,1) and plugged them into the point slope formula

5 0

3 years ago

I need to fill in the blanks for this equation and I cant figure it out

Alex17521 [72]

Answer:

1. +12x and 15

2. 14x

3. 2

Step-by-step explanation:

Step 1: Distribute -3

To distribute -3, you would multiply both -4x and -5 by -3, changing them to 12x and 15

Step 2: Combine 12x and 2x

Then you would combine like terms, meaning that you would add 12x and 2x, creating 14x.

Step 3: Combine 15 and -13

You would finish combining like terms by adding 15 to -13, creating 2

8 0

3 years ago

Using point-slope form, write the equations of the lines that have the following slopes and points.

zavuch27 [327]

Point slope form: y - y1 = m(x - x1)
Plug in the values
a) y + 4 = 5(x - 2)
b) y - 9 = -3/2(x + 2)

8 0

3 years ago

a theater is designed with 15 seats in the first row, 19 in the second, 23 in the third, and so on. if this seating pattern cont

marusya05 [52]

Answer:

131 seats are in the 30th row.

Step-by-step explanation:

The theater is designed with the first row there are 15 seats, in second row 19 seats and in the third row there are 23 seats.

Now, to find the number of seats in the 30th row.

So, we get the common difference( $d$ ) from the arithmetic sequence first:

$19-15=4.$

Thus, $d=4.$

So, the first tem $a(1)$ = 15.

The number of last row ( $n$ ) = 30.

Now, to get the number of seat in the 30th row we put formula:

$a(n) = a(1) + d(n-1)$

$a(30)=15+4(30-1)$

$a(30)=15+4\times 29$

$a(30)=15+116$

$a(30)=131$

Therefore, 131 seats are in the 30th row.

4 0

4 years ago

A box is to be constructed with a rectangular base and a height of 5 cm. If the rectangular base must have a perimeter of 28 cm,

Svetradugi [14.3K]

Answer:

The quadratic equation that best models the volume of the box (in terms of W) is:

$70W-5W^2$

Step-by-step explanation:

The perimeter of the rectangular base = 28cm

Perimeter of a rectangle = 2(L+W)

2(L+W)=28

L+W=14

L=14-W

Volume of the Box= LWH

Since L=14-W and Height Of the Box= 5cm

Volume of the Box= (14-W)W X 5

$=5(14W-W^2)\\ =70W-5W^2$

6 0

3 years ago

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I need help with my test of math​

I need help with my test of math