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My name is Ann [436]
3 years ago
15

Lest year Joe scored 80 point on his moth exam

Mathematics
2 answers:
Stella [2.4K]3 years ago
6 0

Answer:

20%

Step-by-step explanation:

Joe scored 20 percent because that's the answer.

mixer [17]3 years ago
5 0

Answer:

20%

Step-by-step explanation:

decreased score= 80-64 = 16

x% of 80 = 16

x=20

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Which quadratic inequality does the graph below represent?​
Alja [10]

Answer:

y\leq 2x^2-8x+3

Step-by-step explanation:

we know that

The quadratic function of the figure has a vertex at (2,-5) and the y-intercept is the point (0,3)

The equation of a vertical parabola in vertex form is equal to

y=a(x-h)^2+k

where

(h,k) is the vertex

a is a coefficient

we have

(h,k)=(2,-5)

substitute

y=a(x-2)^2-5

with the y-intercept find out the value of a

For x=0,y=3

3=a(0-2)^2-5

3=4a-5

4a=8

a=2

The equation is

y=2(x-2)^2-5

y=2(x^2-4x+4)-5

y=2x^2-8x+8-5

y=2x^2-8x+3

Looking at the graph, the solution is the shaded area below the quadratic equation

so

the value of y must be less than or equal to the quadratic function

y\leq 2x^2-8x+3

3 0
4 years ago
The radius of a circle is 9 kilometers. What is the circle's area?
krek1111 [17]

A=π r²=π×9²≈254.469km²

r radius is 9km

I hope it helped!!!

8 0
3 years ago
What is the answer for 2x-3
Elis [28]

Answer:

2x-3

x=-3/2...

or

x=-1.5..

hope my answer helped u mate...

5 0
4 years ago
Read 2 more answers
The radius of a circle is 10 ft. Find its area in terms of \piπ.
Sergio039 [100]

Answer:

100pie

Step-by-step explanation:

Answer is in attachment . Hope it helps you . If you find this answer useful please rate brainliest if not Thanks anyway..

6 0
3 years ago
*IS MY ANSWER CORRECT?!? IF NOT PLEASE TELL ME THE CORRECT ONE.*<br><br> [[ READ ATTACHMENTS ]]
levacccp [35]

Answer:

As I analysed it for me yes it is

7 0
3 years ago
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