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wel
3 years ago
7

I need help please!!

Mathematics
1 answer:
lana66690 [7]3 years ago
3 0

Answer:

with what I'll try to help

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HELP PLEASE. Two points are 17 units apart on a number line. The coordinate of one point is -20.
cluponka [151]

Answer: -37 & -3

Step-by-step explanation:

-20-17= -37

-20+17= -3

5 0
3 years ago
Find the vertex and length of the latus rectum for the parabola. y=-1/2(x-2)^2+8
victus00 [196]
Y = -(1/2)(x-2)² +8
Re write it in standard form:
(y-8) = -1/2(x-2)²  ↔ (y-k) = a(x-h)²

This parabola open downward (a = -1/2 <0), with a maximum shown in vertex
The vertex is (h , k) → Vertex(2 , 8)
focus(h, k +c )
 a = 1/4c → -1/2 = 1/4c → c = -1/2, hence focus(2, 8-1/2) →focus(2,15/2)

Latus rectum: y-value = 15/2

Replace in the equation y with 15/2→→15/2 = -1/2(x-2)² + 8
Or -1/2(x-2)² +8 -15/2 = 0
Solving this quadratic equation gives x' = 3 and x" = 2, then 
Latus rectum = 5

4 0
3 years ago
Leah wants to carpet a room that is 12 feet wide and 15 feet long. Carpeting is sold by the square yard. Find the length and wid
Zigmanuir [339]

Answer:

length: 5 yd

width: 4 yd

area: 20 yd^2

Step-by-step explanation:

1 yd = 3 ft

15 ft * (1 yd)/(3 ft) = 5 yd

12 ft * (1 yd)/(3 ft) = 4 yd

A = LW

A = 5 yd * 4 yd = 20 yd^2

7 0
3 years ago
Read 2 more answers
Solve the linear equation. 3x = 24 x = ?
trapecia [35]

Answer:

3x =24

x = 24 -3

x = 21 (ans)

6 0
3 years ago
J+9-3&lt;8<br> Please show work?
jeyben [28]
9 - 3 = 6
J + 6 < 8 subtract 6 from both sides
J + 6 - 6 < 8 - 6
J < 2
5 0
3 years ago
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