if ratio of 2 circle is 16:25 and circle one's radius is 4 what is the radius for the 2nd circle

Answer:

its B mark me brainliest plz

Answer:

1/3

Step-by-step explanation:

1) Simplify 3/4t to 3t/4

3t/4 = 1/4

2) Multiply both sides by 4

3t = 1/4 x 4

3) Cancel 4

3t = 1

4) Divide both sides by 3

t = 1/3

The given function for the height of the firework is a quadratic function

1. Time at which the firework reaches the maximum height is 1 seconds

2. The maximum height of the firework, is 25 yards

3. Time after which the firework will fall to the ground is (1 + √5) seconds

Reason:

The given function that represents the height of the fireworks with time is

presented as follows;

h(t) = -5·t² + 10·t + 20

1. The time at which the firework reaches its maximum height is given by

the maximum point of the given function as follows;

The x-value of the maximum point of a quadratic function is [tex]x = \dfrac{b}{2 \cdot a}[/tex]

Where;

a, and b, are the coefficient of x² and x, in the general form of a quadratic function f(x) = a·x² + b·x + c

By comparison, we have;

[tex]t = -\dfrac{10}{2 \times (-5)} = 1[/tex]

2. The maximum height is given by plugging in the value of t, at the maximum point into the given function as follows;

h(1) = -5×1² + 10×1 + 20 = 25

3 The time at which the firework will fall to the ground, is given by the zero of the function as follows;

When the firework falls to the ground, h(t) = 0 =  -5·t² + 10·t + 20

Dividing both sides by (-5) gives;

[tex]\dfrac{0}{-5} = \dfrac{ -5 \cdot t^2 + 10 \cdot t + 20}{-5} = t^2 - 2 \cdot t - 4[/tex]

t² - 2·t - 4 = 0

By the quadratic formula [tex]x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}[/tex], we get;

[tex]t = \dfrac{2\pm \sqrt{(-2)^{2}-4\times 1\times (-4)}}{2\times 1} = \dfrac{2\pm \sqrt{20}}{2\times 1} = \dfrac{2\pm 2 \times \sqrt{5}}{2\times 1} = 1 \pm \sqrt{5}[/tex]

Therefore;

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Answer:

subtract or add 4 to -12 to find the answer

Answer:

z = - 16 , - 8

Step-by-step explanation:

4 units from - 12 is - 16 or - 8 , since

| - 16 - (- 12) | = | - 16 + 12 | = | - 4 | = 4

| - 8 - (- 12) | = | - 8 + 12 | = | 4 | = 4

Answer:

y = 90

x = 64

Step-by-step explanation:

y is 90 because of right angle

if add 26 + 90 = 116 -> 180 (angle of straight line) - 116 = 64 which is angle of angle to left of y and therefore x bc opposite angles equal each other

or even if you saw the line that includes x, 26, and y, x is still 64

also, the other angle that is blank should be 26+y (if our calculations are correct) so it would be 116 -> and if we add up everything we should get 360 so, x/64 + 26 + y/90 + blank angle/64 + 116 = 360 -> all correct!

Answer:

Note that the ratio 12 to 3 is said to be equivalent to the ratio 4 to 1, that is 12:3 = 4:1.

Answer:

12:3 = 4.1

Step-by-step explanation:

12 to 3 is equal or equivalent to the ratio to 4 and 1 so the answer is 12:3 = 4.1

Answer:

0.2 miles/min

Step-by-step explanation:

Divide 2 by 10:

2/10= 0.2

Hope this helps! :)

Answer:

X = 1 week

Each will have $ 26 in 1 week

Step-by-step explanation:

Tamar: y = 15x + 11

Sister: y = 7x + 19

15x + 11 = 7x + 19

15x - 7x = 19 - 11

8x = 8

x = 8/8

15(1) + 11 = 26

Answer:

343

Step-by-step explanation:

Therefore, the answer is 343.

7^3 means 7 cubed, or 7*7*7.

7 times 7 is 49. 49 times 7 is 343.

Hope this helps! :)

Answer:

ya

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

ok so we know the y is -5 (where the line crosses the y axis) so we can eliminate B & D. the answer is not C because the slope would be less steep

Answer:

Step-by-step explanation:

Answer:

In the picture

Step-by-step explanation:

Hey again ! If you have any question feel free to ask !!

Question 4:

Solve for the variable N in [tex]55+8n=4n+107[/tex]

Answer:

[tex]n=13[/tex]

Step-by-step explanation:

1. Subtract [tex]4n+107[/tex] from both sides; [tex]4x-52[/tex]

2. Separate variable [tex]n[/tex] by adding [tex]52[/tex] to both sides; [tex]4n=52[/tex]

3. Simplify equation by dividing by [tex]4[/tex] on both sides; [tex]=13[/tex]

Question 5:

Solve for the variable N in [tex]6-6x=5x-9x-2[/tex]

Answer:

[tex]x=4[/tex]

Step-by-step explanation:

1. Subtract [tex]5x-9x-2[/tex] from both sides; [tex]8-2x[/tex]

2. Separate variable [tex]x[/tex] by adding [tex]2x[/tex] to both sides; [tex]8=2x[/tex]

3. Simplify equation by dividing by [tex]2[/tex] on both sides; [tex]4=x[/tex]

The value of the expression - 3 x 5 using the multiplication property will be -15. Then the correct option is A.

Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to answer the problem correctly and precisely.

The numbers are given below.

-3 and 5

Then the product of the numbers -3 and 5 will be given by putting a cross sign between them. Then we have

⇒ -3 x 5

⇒ -15

The value of the expression - 3 x 5 using the multiplication property will be -15. Then the correct option is A.

More about the Algebra link is given below.

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Answer:

$927.113

Step-by-step explanation:

50-7=43

43×18.94=814.42

100-15=85

100%=18.94

what about 85%

85×18.94=1609.9÷100=16.099

16.099×7=112.693

814.42+112.693= 927.113

Answer:

Step-by-step explanation:

Opposite angles are non-adjacent angles formed by two intersecting lines. Opposite angles are congruent (equal in measure).

3x = 2x + 16

x = 16

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

check

3 * 16 = 2 * 16 + 16

48 = 48

the answer is good

Answer:

x=16

Step-by-step explanation:

Since both angles are vertically opposite, there fore they equal each other.

2x + 16 = 3x

Subtract 3x from both sides

2x - 3x + 16 = 3x - 3x

-x + 16 = 0

-x = 0-16

-x = -16 (Multiply both sides by -1)

x = 16

---------

3x 16 = 48

2*16 + 16 = 48

Answer:

[tex]12x+9[/tex] and [tex]99[/tex]° are supplementary to each other.

Step-by-step explanation:

Supplementary means that two angles added together make 180°.

Looking at the graph, you can see that angles [tex]12x+9[/tex] and [tex]99[/tex]° both combined make 180°, so they are considered supplementary.

Answer:

1331

Step-by-step explanation:

Therefore, the answer is 1331.

(-2+5+8)^3

(11)^3

1331

Answer:

no solution

Step-by-step explanation:

x+2=x+8

Subtract x from each side

x+2-x = x+8-x

2 = 8

This is never true so there is no solution

Answer:

x+2=x+8

x+2-2=x+8-2

x=x+6

x-x=x+6-x

0=6

Step-by-step explanation:

Answer:

700 turns

Step-by-step explanation:

hey

______________

in 1 round distance covered = circumference

•radius = 35/100 m

•circumference = 2πr

=2×22/7×35/100

=44×5/100

= 220/100 m

220/100 m covered in 1 turn

1540m covered in 1540×100/220 = 700

hence ans is 700 turns

hope helped

_________________ PLEASE GIVE BRAINLIEST

Answer:

Approximately 700 times

Answer:

All are functions but the 1st one

Step-by-step explanation:

generally, if you have an equation that will repeat x values, it's not a function. The first one has an infinite number of x values

Answer:

11. 4

_ X _

20. 14

Step-by-step explanation:

Multiply the numerator

11 X 4= 44

Multiply the denominator

20 X 14= 280

Then, division to the lowest term

44 X 280 = 6

hope it's helpful

pa brainlest po

Answer:

The answer to your question is 91

Step-by-step explanation:

8289-8=8281 then square of the number is 91 and 91 is soldiers in each row

Total no of soldiers=8289

number of soldiers left out=8

√8281=91

I hope this helps!

Answer:

Wrong I think... it would be x=1/5

Step-by-step explanation:

-3x +2x is -1x but the rest seems correct.

Answer:

13×10/5×3= 130/15= 26/3=8.6

Step-by-step explanation:

13 multiplies 10 and 5 multiplies 3 after it gets divided

Answer:

N-K = 6-3 which equals 3.

Step-by-step explanation: