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3 years ago

Solve for all values of x by factoring. x^2-25= x 2 â’25= 0

Mathematics

1 answer:

lozanna [386]3 years ago

6 0

Answer:

x = ± 5

Step-by-step explanation:

x² - 25 = 0 ( add 25 to both sides )

x² = 25 ( take square root of both sides )

x = ± $\sqrt{25}$ = ± 5

That is x = - 5, x = 5

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What property would use to save m+6=-4

vlabodo [156]

Subtraction, you’d -6 to the other side and m=-10

5 0

4 years ago

What point is an x-intercept of the quadratic function f(x)=(x-4)(x+2)

Naddika [18.5K]

Answer:

x-intercepts (4,0) and (-2,0)

Step-by-step explanation:

f(x)=(x-4)(x+2)

f(x)=0=y

0=(x-4)(x+2)

x-4=0 or x+2=0

x=4 or x=-2

x-intercepts (4,0) and (-2,0)

4 0

3 years ago

Find the area of sphere of radius 4 cm

marin [14]

<h3>✠ Given:-</h3>

Radius of the Sphere = 4 cm

Area of the Sphere = ??

<h3>✠ Solution:-</h3>

⚘ Here , we Have Given That Radius of the Sphere is 4 cm and we have to find the Area of the Sphere , We know that formula used to find the area; <u>Area of Sphere = 4πr²</u>.....

☼ <u>Calculating the Area of the Sphere</u>;

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \: \: 4 \: \pi \: r {}^{2} \\$

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \: \: 4 \: \times \: \frac{22}{7} \: \times \: 4 {} \: ^{2} \\$

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \: \: 4 \: \times \: \frac{22}{7} \: \times \: 4 \: \times \:4 \\$

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \: \: 4 \: \times \: \frac{22}{7} \: \times \: 16 \\$

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \:\: \frac{4 \: \times \: 22 \: \times \: 16 \: }{7} \: \\$

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \:\: \frac{ \: \: 1408\: \: \: }{7} \: \\$

$\\ \sf \implies \: Area_{ \red{ \{Sphere \}}} \: = \:\: \cancel{\frac{ \: \: 1408\: \: \: }{7} } \: \\$

$\\ \implies{ \underline{ \boxed{\sf{ \: Area_{ \red{ \{Sphere \}}} \: = 201.14 \: \: cm }}}}\\ \\$

Henceforth, The Area of Sphere is 201.14 cm...!!

$\\ \\ ✠ \: \: { \underline{\bf { \color{blue}{ \: \: Additional \: \: Information :- \: \: }}}} \\ \\$

⇥ Perimeter of rectangle = 2(length× breadth)

⇥ Diagonal of rectangle = √(length ²+breadth ²)

⇥ Area of square = side²

⇥ Perimeter of square = 4× side

⇥ Volume of cylinder = πr²h

⇥ T.S.A of cylinder = 2πrh + 2πr²

⇥ Volume of cone = ⅓ πr²h

⇥ C.S.A of cone = πrl

⇥ T.S.A of cone = πrl + πr²

⇥ Volume of cuboid = l × b × h

⇥ C.S.A of cuboid = 2(l + b)h

⇥ T.S.A of cuboid = 2(lb + bh + lh)

⇥ C.S.A of cube = 4a²

⇥ T.S.A of cube = 6a²

⇥ Volume of cube = a³

⇥ Volume of sphere = 4/3πr³

⇥ Surface area of sphere = 4πr²

⇥ Volume of hemisphere = ⅔ πr³

⇥ C.S.A of hemisphere = 2πr²

⇥ T.S.A of hemisphere = 3πr²

4 0

2 years ago

Read 2 more answers

A soccer player's average during her first two seasons was 1.4 goals per game. There are five games in the current season; she s

Mumz [18]

Answer:

Number of goals to convert in game 5= 3 goals

Step-by-step explanation:

Giving the following information:

A soccer player's average during her first two seasons was 1.4 goals per game.

<u>First, we need to determine the number of goals converted:</u>

Goal games 1-4= 4

<u>Now, the number of goals she must have at five games and by the difference the number of goals to convert:</u>

Number of goals for five games= 1.4*5= 7

Number of goals to convert= 7 - 4= 3 goals

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3 years ago

brittany is listening to a song on the internet. the song is streaming at a rate of 128 kilobits per second. There are 8 kilobit

lianna [129]

Step-by-step explanation:

16 because 128 divided by 8 is 16

8 0

3 years ago