PLs help I dont understand

Answer:

13) x=5

14) x=70

16) x=42

Step-by-step explanation:

Couldn't read 15 sorry

Answer:

X^2-12x+ C

Step-by-step explanation:

Move 12x

To find the value c=(b/2^2,divide the coefficient of X by 2 and square the result.

Divide 12 by 2

(-1.6)^2

Multiply-1 by 6

(-6)^2

Raise -6 to the power of 2

36

Answer:

Should be 4/10

Step-by-step explanation:

If you add all the marbles up you get the total/denominator of 10. Then you find the fraction for orange marbles which is 2/10. Then the green, 2/10. Add the numerators and keep the denominator the same.

Answer:

That is a quadratic equation in which

a = 1

b = 6

c = 3

The quadratic formula is:

x = [-b +- sqr root (b^2 -4*a*c)] / 2*a

x = [-6 +- sqr root (36 -4 * 1 * 3)] / 2

x1 = [-6 + sqr root (24)] / 2

x2 = [-6 - sqr root (24)] / 2

Step-by-step explanation:

Answer:

The number of boys: a

The number of girls: b

=> a/b = 5

   a - b = 60

=> (b + 60)/b = 5

=> b + 60 = 5b

=> 4b = 60 => b = 15 => a = 5 x 15 = 75

=> Total people:

T = a + b = 15 + 75 = 90

Hope this helps!

:)

Answer:

C. 41

Step-by-step explanation:

180 - 81 = 99

99+40 = 139

180 -139 = 41

Answer: 55.5 (A.)

Step-by-step explanation:

Since angle A = 29 and angle B = 41, angle C must be equal to 110

180 = m<A + m<B + m<C

180 = 29 +41 + m<C

180 = 70 + m<C

110 = m<C

Therefore, side c must be the longest, side b must be the second longest, and side a must be the shortest.

Since side length a, angle A, and angle B are known, one can use the law of sines to solve for side b.

Law of Sines: sinA/a = sinB/b = sinC/c

sinA/a = sinB/b

sin29/41 = sin41/b

b(sin29/41) = sin41

b = 41(sin41)/(sin29)

b = 55.48

b = 55.5

Answer:

Height is 21cm

Step-by-step explanation:

Volume of the cylinder = 1029pi

Base area = 7x7xpi = 49pi

Therefor the height = 1029pi/49pi=1029/49 = 21cm

Answer:

21 cm.

Step-by-step explanation:

V = π r^2 h

1029π = π * 7^2 * h   The π is common so:

1029 = 7^2 h

h = 1029 / 49

= 21 cm.

Answer:

3:4

Step-by-step explanation:

They both go into 16

48/16 = 3

64/16 = 4

3:4

Answer:

3:4

is the answer according to me

Answer:

the 'questions' that you have posted are the answers for the questions above

Step-by-step explanation:

Answer:

[tex]a) - 6a + 70 - 11b[/tex]

[tex] b) - 17a - b[/tex]

Step-by-step explanation:

[tex]7a + 70 - 13a - 11b \\ 7a - 13a + 70 - 11b \\ = - 6a + 70 - 11b[/tex]

[tex] - 5a - 12a + 2b - 3b \\ = - 17a - b[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

Yes, it's a right triangle.

Step-by-step explanation:

Use a^2 + b^2 = c^2

10^2 + 12.49 ^2 (its 2 39 square root) = 16^2

100 + 156 = 256

256 = 256

It ended up being equal to one another so yes, it is a right triangle.

Answer:

Step-by-step explanation:

The solution of this systems of equations is the intersection of both graphs

Let's kick start with a:

a)

[tex]y+12 = x^2+x \\ \\ x+3 = y[/tex]

From the first attached diagram by using graph:

the solution is the set {(-5, 8), (3, 0)}

b)

[tex]y-15=x^3+4x \\ \\ x-y =1[/tex]

Using the graph tool from the last diagram below;

the solution is the set⇒( there is no solution)

c)

[tex]y+5 =x^2-3x \\ \\ 2x+y =1[/tex]

From the second attached diagram by using graph:

the solution is the set {(-2, 5), (3, -5)}

d)

[tex]y-6=x^2-3x \\ \\ x+2y =2[/tex]

the solution is the set ⇒ there is no solution (shown in the last diagram  below)

e)

[tex]y-17=x^2-9x \\ \\ -x+y =1[/tex]

the solution is the set {(2, 3), (8, 9)} as shown in the third diagram

f) Lastly:

[tex]y-15=-x^2+4x \\ \\ x+y =1[/tex]

Using the graph tool from the fourth diagram below;

the solution is the set  {(-2, 3), (7, -6)}

The solution to the system of equations are the truth values of the system of equations

[tex]\mathbf{(a)\ y + 12 = x^2 + x,\ x + 3 = y}[/tex]

The graphs of the equations intersect at (-5,8) and (3,0).

So, the solution set is {(-5,8), (3,0)}

[tex]\mathbf{(b)\ y - 15 = x^3 + 4x,\ x - y = 1}[/tex]

The graphs of the equations do not intersect

So, the system has no solution

[tex]\mathbf{(c)\ y + 5 = x^2 - 3x,\ 2x + y = 1}[/tex]

The graphs of the equations intersect at (-2,5) and (3, -5).

So, the solution set is {(-2, 5), (3, -5)}

[tex]\mathbf{(d)\ y - 6 = x^2 - 3x,\ x + 2y = 2}[/tex]

The graphs of the equations do not intersect

So, the system has no solution

[tex]\mathbf{(e)\ y - 17 = x^2 - 9x,\ -x + y = 1}[/tex]

The graphs of the equations intersect at (2,3) and (8,9).

So, the solution set is {(2, 3), (8, 9)}

[tex]\mathbf{(f)\ y - 15 = -x^2 + 4x,\ x + y = 1}[/tex]

The graphs of the equations intersect at (-2,3) and (7,-6).

So, the solution set is {(-2, 3), (7, -6)}

Read more about system of equations at:

https://brainly.com/question/12895249

Answer:

.58 miles/minute

Step-by-step explanation:

56 kilometers/hour * 0.621371 miles/kilometer * 1 hour/60 minutes

= .58 miles/minute

Answer:

Step-by-step explanation:

Whats yo ig???

Answer:

≈ 113.1 in³

Step-by-step explanation:

The figure comprises of a cylinder and a cone.

Total volume is:

Answer:

As shown in picture, here is a triangular pyramid whose volume is calculated by:

V = (1/3) x base area x height

  = (1/3) x 20 x 30 x (1/2) x 27

  = (20 x 30 x 27)/(2 x 3)

Hope this helps!

:)

Answer:

Option A

Step-by-step explanation:

A domain of a function are all the inputs of the function. (or x-values)

The picture is a function mapping.

The left 'oval' contains the domain, as the right 'oval' contains the range.

The numbers in the left oval are [-1,3,5]. Therefore, they are the domain of the function.

Option A should be your correct answer.

Answer:

c. A sample is a small part of a population that represents that population.

Step-by-step explanation:

A sample is a portion of individuals used to collect data, while the population is the total number of individuals. The information from the sample is used to represent the entire population.

Therefore, c is the correct answer.

Relationship between sample and population : A sample is a small part of a population that represents that population.

Given,

Relationship between sample and population .

Here,

A sample is a portion of individuals used to collect data, while the population is the total number of individuals. The information from the sample is used to represent the entire population.

Therefore, c is the correct answer.

Know more about sample and population,

https://brainly.com/question/30324262

#SPJ3

Answer:

12 x 1.5 = 18.

Step-by-step explanation:

Pretty much anything between 1 and 2. :P

Answer:

A

Step-by-step explanation:

solution is A.

A relation is a function if no x value gives two or more values of y though different values of x may give same value of y.

a=-30 because -30-(8 x -30)=210.

Answer:

The value of f(3) = 28.26

Step-by-step explanation:

You have to do is to substitute r = 3 into the function :

[tex]f(r) = 3.14 \times {r}^{2} [/tex]

[tex]f(3) = 3.14 \times {3}^{2} [/tex]

[tex]f(3) = 3.14 \times 9[/tex]

[tex]f(3) = 28.26[/tex]

Answer:

Volume = 2448 cm3

Step-by-step explanation:

Volume = volume of cube + volume of pyramid

             = 12*12*12 + 12*12*15/3

             = 1728 + 720 =2448

Answer:

40 percent

Step-by-step explanation:

covert fraction 4 out of ten is 40 %

Answer:

40%

Step-by-step explanation:

A percentage is basically x/100.

Therefore, if we convert Siobhan's mark into a fraction, we get 4/10. Then, by converting the fraction to fit x/100, we get 40/100 (remember, we must do the same to both the numerator and the denominator, so in this case it's multiply them by 10). Now that we have x, we can fit that into the answer to get 40%.

Answer: 5^2

Step-by-step explanation:

Since the base are all the same, you will add the exponents and let the exponents stay the same.

5^3  * 5^4= 5^7 * 5^-5= 5^2

Answer:

25

Step-by-step explanation:

Using the rule of exponents

[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex]

The rule can be extended to include more than 3 terms.

Given

5³ × [tex]5^{4}[/tex] × [tex]5^{-5}[/tex]

= [tex]5^{(3+4-5)}[/tex]

= 5²

= 25

Answer:

2.a part-whole problem because the unmade part of the 11 baskets is unknown

Step-by-step explanation:

It is the only one that wold make sense with this problem

Answer:

the answer is b

Step-by-step explanation:

edge 2021

Answer:

24

Step-by-step explanation:

I will assume this is a right triangle with the information given

a^2+b^2 = c^2 is the Pythagorean theorem

18^2 + b^2 = 30^2

Subtract 18^2 from each side

18^2  - 18^2+ b^2 = 30^2 -18^2

b^2 =900 -324

b^2 =576

Take the square root of each side

sqrt(b^2) = sqrt(576)

b =24

Answer:

gggg

Step-by-step explanation:

bfdrfgnhtrh

Answer:

Options C and E

Step-by-step explanation:

Option A. Circle

We can't get a cross section in the form of a circle.

Option B. Cube

We can't get a cross section in the form of a cube.

Option C. Rectangle

When we slice a rectangular pyramid parallel to the base but not through the vertex, we get a Rectangle.

Option D. Square

We can not get a square by slicing a rectangular pyramid.

Option E. Triangle

By slicing a rectangular pyramid perpendicular to the base and passing through the vertex we can get the cross section in the form of  triangle.

Options C and E will be the answer.

Answer:there are many ways you can use it. We used it this way. (8&1)(4&5)(9)(6&3)(7&2)

Step-by-step explanation:

The middle number using 9 like I did. You need all the other powers to add to 9 together. For example 8+1=9, 4+5=9,6+3=9 and 7+2=9