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777dan777 [17]
4 years ago
6

Please help me in question 7

Mathematics
1 answer:
dolphi86 [110]4 years ago
7 0
The roots of a quadratic function are the points at which the cross the x axis (the x- intercepts). so your roots are

(3) 3 and -6
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Alborosie
Can’t help DDDD: bcoz link is a scam
7 0
3 years ago
There are 4 red marbles and 7 blue marbles in a bay.
Brilliant_brown [7]

Answer:

a:  11:7

b: 11:

I hope this helped :)

3 0
3 years ago
Read 2 more answers
Can y’all help me plss
Troyanec [42]

<u>In a parallelogram,</u>

 ⇒the angles adjacent to each other

    ⇒ are of the same measure

        ⇒so

             ∠A = ∠C

             ∠B = ∠D

<u>Let's solve</u>:

  • ∠A = ∠C

           7z +5 = 8z - 10\\5+10=8z-7z\\8z-7z=5+10\\z = 15

  •  ∠B = ∠D

           5w-30=3w+10\\5w-3w=30+10\\2w = 40\\w=20

<u>Let's check</u>:

 ⇒ for all quadrilaterals like a parallelogram

    ⇒all the angle measures added up to 360, so:

     (7z+5)+(8z-10)+(5w-30)+(3w+10)=360\\(7(15)+5)+(8(15)-10)+(5(20)-30)+(3(20)+10)=360\\(105+5)+(120-10)+(100-30)+(60+10)=360\\110+110+70+70=360\\220+140=360\\360=360

<u>Thus</u>:

  <u>Answer: w = 20 and z = 15</u>

Hope that helps!    

7 0
2 years ago
Read 2 more answers
Quinton answered 90% of his test questions correctly. Quinton answered 54 questions correctly.
snow_tiger [21]
There would be 60 questions on the test.

90%=54
1%= 54/90 = 6/10
100%= 6×100/10 =6×10=60
7 0
3 years ago
A 3 inch radius circle is drawn inside a 7 inch radius circle. If you throw a dart at these circles, what is the probability you
lorasvet [3.4K]

Answer:

Step-by-step explanation:

The first step is to determine the areas of the inner and the bigger circles.

The formula for determining the area of a circle is expressed as

Area = πr²

Where

r represents the radius of the circle.

π is a constant whose value is 3.14

Considering the inner circle,

diameter = 148.4 cm

Radius = 3 inches

Area = 3.14 × 3² = 28.26 inches²

Considering the bigger circle,

Radius = 7 inches

Area = 3.14 × 7² = 153.86 inches²

The area between the bigger and inner circles is

153.86 - 28.26 = 125.6 inches²

Probability = number of favourable outcome/number of total outcome.

the probability you land inside the bigger circle but outside smaller circle is

125.6/153.86 = 0.82

3 0
3 years ago
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