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2 years ago

Which situation CANNOT be represented by this equation? 3x+4=19

Mathematics

2 answers:

Artist 52 [7]2 years ago

4 0

Answer:

Penny is selling candles for $4 each at a fund-raiser.

If she starts selling with $3 to help her make change, how many candles, x, will she have to sell to end up with $19?

8090 [49]2 years ago

3 0

I'm going with B Pennt is seling candles for 4$ each at a fund raiser if I'm right please give me branlest

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I need answer Immediately pls!!!!!!

Illusion [34]

Given:

Total number of students = 27

Students who play basketball = 7

Student who play baseball = 18

Students who play neither sports = 7

To find:

The probability the student chosen at randomly from the class plays both basketball and base ball.

Solution:

Let the following events,

A : Student plays basketball

B : Student plays baseball

U : Union set or all students.

Then according to given information,

$n(U)=27$

$n(A)=7$

$n(B)=18$

$n(A'\cap B')=7$

We know that,

$n(A\cup B)=n(U)-n(A'\cap B')$

$n(A\cup B)=27-7$

$n(A\cup B)=20$

Now,

$n(A\cup B)=n(A)+n(B)-n(A\cap B)$

$20=7+18-n(A\cap B)$

$n(A\cap B)=7+18-20$

$n(A\cap B)=25-20$

$n(A\cap B)=5$

It means, the number of students who play both sports is 5.

The probability the student chosen at randomly from the class plays both basketball and base ball is

$\text{Probability}=\dfrac{\text{Number of students who play both sports}}{\text{Total number of students}}$

$\text{Probability}=\dfrac{5}{27}$

Therefore, the required probability is $\dfrac{5}{27}$ .

3 0

2 years ago

The picture explains the question

liubo4ka [24]

Answer:

they give you its a right angle. right angle means its 90 degrees. to find x simply just subtract 62 from 90

4 0

2 years ago

Read 2 more answers

Find the product of 24 and 5/6

Elena L [17]

AnswerThe product of 24 and 5/6 is 20.

Step-by-step explanation:

So first multiple 24 and 5.You get 120.Then you divide 120 by 6.You get 20.

6 0

2 years ago

The length of a rectangle is the sum of the width and 4. The area of the rectangle is 32

Sauron [17]

Answer:

The width of rectangle w = 4 units

Step-by-step explanation:

We are given:

Width of rectangle = w

Length of rectangle = w+ 4

Area of rectangle = 32 units

We need to find width of the rectangle

The formula used is: $Area\:of\:rectangle=Length\times Width$

Putting values and finding width of rectangle

$Area\:of\:rectangle=Length\times Width\\32=(w+4)\times w\\32=w^2+4w\\w^2+4w-32=0$

We need to solve this quadratic equation to find width (w)

We will use factorisation and break the middle term.

$w^2+4w-32=0\\w^2+8w-4w-32=0\\w(w+8)-4(w+8)=0\\(w-4)(w+8)=0\\w-4=0\:or\:w+8=0\\w=4\:or\:w=-8$

Since width of rectangle can't be negative, so rejecting w=-8

Therefore, the width of rectangle w = 4 units

4 0

2 years ago

What is the missing constant term in the perfect square that starts with x^2+\dfrac{1}{2}xx

grandymaker [24]

Answer:

1/16

Step-by-step explanation:

Given the expression;

$x^2+\dfrac{1}{2}x$

To find a constant that will make it a perfect square, we will use the square if the half of coefficient of x

Coefficient of x = 1/2

half of Coefficient of x = 1/2*(1/2)

Half of Coefficient of x = 1/4

square of the half of coefficient of x = (1/4)^2

square if the half of coefficient of x = 1/16

hence the constant that will make it a perfect square is 1/16

7 0

2 years ago