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miskamm [114]
3 years ago
14

How do you use numerical expressions to solve real-world problems?

Mathematics
2 answers:
crimeas [40]3 years ago
7 0
You multiply 7 x 3 then navigate to answer x $8.50

PilotLPTM [1.2K]3 years ago
5 0
There are many ways to do this, if you wanted to write a numerical expression for: Lauren had $7 she babysits for three hours and earned $8.50 per hour, you would write 7+3x8.50=M. It is much shorter and makes much more sense to write this expression than to write a whole story
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Question 17(Multiple Choice Worth 1 points)
Marina86 [1]

Answer:A fine of $0.75 is paid if the book returned by the due date.

No fine is paid if the book is returned 1 day after the due date.

A fine of $0.75 is paid if the book is returned 1 day after the due date.

Bit by bit clarification:

A fine of $0.75 is paid if the book returned by the due date.

No fine is paid if the book is returned 1 day after the due date.

A fine of $0.75 is paid if the book is returned 1 day after the due date.

3 0
3 years ago
Read 2 more answers
I need help desperately! Could someone explain this math concept for me please?
Nana76 [90]

The inequality that represents the range of k so that inequality 1 has real solution is -3 < k < 5

<h3>How to determine the range?</h3>

<u>Inequality 1</u>

x^2 + (k + 1)x + k + 4 > 0

The discriminant is calculated using

D = b^2 - 4ac

So, we have:

D = (k + 1)^2 - 4 * 1 * (k + 4)

Evaluate

D = k^2 + 2k + 1 - 4k - 16

This gives

D = k^2- 2k - 15

Factorize the equation

D = (k+ 3)(k -5)

Solve for k

k = -3 and k = 5

Express the k values as inequalities

-3 < k < 5

<u>Inequality 2</u>

The inequality cannot be read, because of the image quality

Read more about discriminant at:

brainly.com/question/7784687

#SPJ1

4 0
2 years ago
Which of the following equations have infinitely many solutions? 
Bond [772]

Answer:

Equation I , II and V.

Step-by-step explanation:

Number II:L

0.5(8x + 4) = 4x + 2    Distributing the 0.5 over the parentheses:

4x + 2 = 4x + 2

The 2 sides of this equation are identical so we can make x any value to fit this identity. That is there are Infinite Solutions.

I and V are also included:

I: 12x + 24 = 12x + 24.

V left side = right side.

8 0
4 years ago
Two vertices of a right triangle have coordinates ( 9 , 1 ) and (;6 , - 1 ) Select each ordered pair that could be the coordinat
Serjik [45]

Option A: (9,-1) is the third vertex

Option B: (6,1) is the third vertex.

Explanation:

The two vertices of the right triangle are (9,1) and (6,-1)

The third vertex of the right triangle can be determined by plotting the points in the graph.

Option A: (9,-1)

By plotting the points (9,1), (6,-1) and the third vertex (9,-1) in the graph, the the hypotenuse of the triangle passes through the vertices (9,1) and (6,-1)

The legs of the triangle passes through the vertices (9,1), (9,-1) and (6,-1), (9,-1)

Hence, the third vertex (9,-1) forms a right triangle.

Therefore, Option A is the correct answer.

Option B: (6,1)

By plotting the points (9,1), (6,-1) and the third vertex (6,1) in the graph, the hypotenuse of the triangle passes through the vertices (9,1) and (6,-1)

The legs of the triangle passes through the vertices (9,1), (6,1) and (6,1) , (6,-1)

Hence, the third vertex (6,1) forms a right triangle.

Therefore, Option B is the correct answer.

Option C: (1,-1)

By plotting the points (9,1), (6,-1) and the third vertex (1,-1) in the graph, we can see that the three vertices does not make a right angled triangle.

Hence, the third vertex (1,-1) does not form a right triangle.

Therefore, Option C is not the correct answer.

Option D: (6,9)

By plotting the points (9,1), (6,-1) and the third vertex (6,9) in the graph, we can see that the three vertices does not make a right angled triangle.

Hence, the third vertex (6,9) does not form a right triangle.

Therefore, Option D is not the correct answer.

5 0
3 years ago
Find the x and y intercepts for the problem <br> 2x+y=10x-1
Marat540 [252]
x\ intercept\ is\ for\ y=0\\\\&#10;2x+0=10x-1\\&#10;2x=10x-1\ \ \ | subtract\ 10x\\&#10;-8x=-1\ \ \| divide\ by\ -8\\&#10;\boxed{x=\frac{1}{8}}\\\\&#10;y\ intercept\ is\ for\ x=0\\\\&#10;0+y=0-1\\&#10;\boxed{y=-1}
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4 years ago
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