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bogdanovich [222]
4 years ago
6

Plzzzz help 8th keystone

Mathematics
1 answer:
Tems11 [23]4 years ago
7 0

Answer:

i think the first and the 3rd if im not right sorry mate

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Consider the function f(x) = 4x² - x + 3. What is f(1)?
zhannawk [14.2K]

Replace every x you see in the function with 1 and simplify.

Let x be 1.

f(1) = 4(1)^2 -(1) + 3

f(1) = 4(1) - 1 + 3

f(1) = 4 - 1 + 3

f(1) = 3 + 3

f(1) = 6

Done!

3 0
3 years ago
Someone please help me :'(
eimsori [14]
Hello,

Let's assume v=the normal bicycling speed with no wind
and t the same amount of time...

60=(v+2)*t (1)
48=(v-2)*t (2)

(1)/(2)==>60/48=(v+2)/(v-2)

==>5(v-2)=4(v+2)
==>5v-4v=8+10
==>v=18 (mi/h)
 
8 0
3 years ago
A circle has its center at (−1, 2) and a radius of 3 units. Find the equation of the circle using the Pythagorean Theorem. PLEAS
notka56 [123]
Pythagorean Theorem is for triangles not circles. 

The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the center.

Plug in your given information and simplify.

(x - (- 1))² + (y - 2)² = (3)²

(x + 1)² + (y - 2)² = 9 is your equation. 
6 0
3 years ago
Read 2 more answers
ONLY answer if you know what the answer is. If you are not sure DONT FREAKING ANSWER.
SCORPION-xisa [38]

Answer:

13

Step-by-step explanation:

the absolute value is the opposite of its number, for example 6, the opposite of 6 is -6

hope this helps :)

and if it's wrong i am so sorry:(

8 0
2 years ago
Read 2 more answers
2n² - n- 4=2 I want to see the steps how its done​
torisob [31]

Answer: n=2

Step-by-step explanation:

Let's solve your equation step-by-step.

2n2−n−4=2

Step 1: Subtract 2 from both sides.

2n2−n−4−2=2−2

2n2−n−6=0

Step 2: Factor left side of equation.

(2n+3)(n−2)=0

Step 3: Set factors equal to 0.

2n+3=0 or n−2=0

n= -3/2 or n=2

6 0
4 years ago
Read 2 more answers
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