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DerKrebs [107]
3 years ago
7

Help with 2 questions please.

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
7 0
The first one is C or -6,4
Ne4ueva [31]3 years ago
6 0
X^2 - 2x - 24 = 0
(x - 6)(x + 4) = 0
x - 6 = 0 x = 6
x + 4 =  x = -4
answer x = 6, -4 (last choice)

----------------------

(x+9)^2 = 169
x^2 + 18x + 81 - 169 = 0
x^2 + 18x -88 =0
(x-4)(x+22) = 0
x - 4 = 0 x = 4
x + 22 = 0 x = -22

answer:
4m (last choice)

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How to find the volume of a cylinder in terms of pi
Dmitriy789 [7]

You'll need to know more information in addition to pi.

The volume of a cylinder =

          (pi) x (radius of the circular end)² x (height or length of the cylinder) .


8 0
3 years ago
Can you guys help me please :(
docker41 [41]

The area of the first, second, third, and fourth circles will be 56.72 cm², 36.3 ft², 167.33 m², and 188.6 yd² respectively.

<h3>What is a circle?</h3>

It is the centre of an equidistant point drawn from the centre. The radius of a circle is the distance between the centre and the circumference.

Then the radius and diameter are given below.

\rm r_1 = 4 \dfrac{1}{4} = \dfrac{17}{4} = 4.25 \ cm\\\\\\r_2 = \dfrac{d}{2} = \dfrac{6\frac{4}{5}}{2} = \dfrac{34}{10} = 3.4 \ ft\\\\\\r_3 = \dfrac{d}{2} = \dfrac{14.6}{2} = 7.3 \ m\\\\\\r_4 = 7\dfrac{3}{4} = \dfrac{31}{4} = 7.75 \ yd

Then the area of the circle is given as

Area = π × r²

Then the area of the first circle will be

Area = π × r₁²

Area = 3.14 × 4.25²

Area = 56.72 square cm

Then the area of the second circle will be

Area = π × r₂²

Area = 3.14 × 3.4²

Area = 36.3 square ft

Then the area of the third circle will be

Area = π × r₃²

Area = 3.14 × 7.3²

Area = 167.33 square m

Then the area of the fourth circle will be

Area = π × r₁²

Area = 3.14 × 7.75²

Area = 188.6 square yd

More about the circle link is given below.

brainly.com/question/11833983

#SPJ1

4 0
2 years ago
Polygon stuv is reflected over the x axis and then over the y axis to create wxyz . Which of the following sides are congruent ?
JulsSmile [24]

Answer:

ST and WX are congruent ⇒ first answer

Step-by-step explanation:

∵ S = (-5 , -4) , T = (-3 , -1) , U = (-1 , -3) , V = (-2 , -6)

∵ STUV reflected over the x-axis

∴ S' = (-5 , 4) , T' = (-3 , 1) , U' = (-1 , 3) , V' = (-2 , 6)

∵ S'T'U'V' reflected over the y-axis

∴ S" = (5 , 4) , T" = (3 , 1) , U" = (1 , 3) , V" = (2 , 6)

∵ W = (5 , 4) , X = (3 , 1) , Y = (1 , 3) , Z = (2 , 6)

∴ S"T"U"V" is WXYZ

∴ ST and WX are congruent

3 0
3 years ago
Read 2 more answers
2x+y=1 9x + 3y = -3 The x-coordinate of the point of intersection is
Anvisha [2.4K]
Hello : 
<span>2x+y=1 ....(1)
9x + 3y = -3....(2)
by (1) : y = -2x+1...(*)
by (2) : 3(3x+y) = - 3
3x+y = -1
y = -3x -1 ....(**)
by (*) (**) :
-2x+1 = -3x -1
- 2x +3x = -1 -1 
x =-2  is </span><span>The x-coordinate of the point of intersection</span>
4 0
4 years ago
Read 2 more answers
Every student in the senior class is taking history or science. There are $200$ seniors in the class. If there are $126$ seniors
aniked [119]

Answer: 55

Step-by-step explanation:

126+129= 255

255-200=55

4 0
3 years ago
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