Answer:
A
Step-by-step explanation:
Given (x + h) is a factor of f(x) then f(- h) = 0
Given
p(x) = x³ - 4x² + ax + 20 , with (x + 1) as a factor then
p(- 1) = (- 1)³ - 4(- 1)² - a + 20 = 0 , that is
- 1 - 4 - a + 20 = 0
15 - a = 0 ( subtract 15 from both sides )
- a = - 15 ( multiply both sides by - 1 )
a = 15 , thus
p(x) = x³ - 4x² + 15x + 20
If p(x) is divided by (x + h) then p(- h) is the remainder, so
p(- 2) = (- 2)³ - 4(- 2)² + 15(- 2) + 20 , that is
- 8 - 16 - 30 + 20 = - 34 → A
Answer:
Please look at the image.
I solved this by the information of 6 pages in 12 minutes which means 0.5 or half a page per minute.
Now you know you read half a page in a minute
5 pages in 10 minutes because:
10 × 0.5 = 5
8.5 pages in 17 minutes because:
17 × 0.5 = 8.5
Answer:
c
Step-by-step explanation:
Tess and Jack are both correct with their claims
<h3>How to determine who is correct?</h3>
The attached image completes the question
From the complete question, we have the following highlights
- The shape has equal side lengths
- The angles at the vertices of the shape are right angles
The above properties represent a square
A rhombus can also have the above properties when the vertices are at 90 degrees
Hence, Tess and Jack are both correct with their claims
Read more about squares and rhombus at:
brainly.com/question/20627264
#SPJ1
Answer:
4n-2=7, the number is 2.25
Step-by-step explanation:
4n=9
n=2.25