1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Annette [7]
3 years ago
14

Martin buys 3 hardcover books and 4 paperback books for $6.50. Anna buys 2 hardcover books and 6 paperback books for $6.00. What

is the cost, in dollars, of each hardcover book?
Mathematics
1 answer:
Travka [436]3 years ago
6 0

Answer: Each hard cover book is worth $1.50

Step-by-step explanation:

Hard cover is worth $1.50, so the softcover is worth 0.50, 3x1.5 is 4.5, 4x0.50 is 2, 2+4.5=6.50

You might be interested in
I need to know what the answer is!?
ArbitrLikvidat [17]

Answer:

2

Step-by-step explanation:

Use PEMDAS

First simplify the exponent (9)

Next multiply 5 and 3 (15)

Now add 15 and 15 (30)

Add 9 and 6 (15)

Lastly simply 30 by 15 (2)

3 0
3 years ago
Read 2 more answers
Determine which of the following sets of side lengths represents the side lengths of a right triangle. select all that apply.
Igoryamba
Know about the following<span> topics. </span>1<span>. Converse of Pythagorean Theorem. </span>2. 45-45-<span>90 </span>Right Triangles<span>. </span>3<span>. 30-60-90 </span>Right Triangles<span>. </span>4<span>. Tangent Ratio. </span>5. Sine Ratio. 6<span>. ... </span>Check<span> to see whether the </span>side lengthssatisfy the equation c2. = a2 + b2. (√113)2<span> = 72 + 82. 113 = 49 + 64. 113 = 113 </span>✓<span>. </span>7<span>. 8. √113 ? ? The triangle is a.</span>
5 0
3 years ago
Read 2 more answers
An article bought for rupees 350 is sold at a profit of 20% find its selling price​
Mice21 [21]

Answer:

420

Step-by-step explanation:

20 percent of 350 is 70, so adding that on will give us the price it is sold at for profit of 70 (20%).

3 0
3 years ago
Read 2 more answers
A lab technician has to fill the tank given below. <br> Find it’s volume .
wel

Answer:

The volume of the cylinder shown in the figure is 628 cube meters

Step-by-step explanation:

Given figure is about cylinder

The height of the cylinder = h = 8 meters

The radius of the base of cylinder = r = 5 meters

Now, let The volume of cylinder = V m³

So, The volume of cylinder is given as V = \pi×r²×h

where r is the radius of its base

And h is the height of cylinder

The value of  \pi = 3.14

So, V =  \pi × r² × h

Or, V = 3.14 × (5)² × 8

Or, V =  3.14 × 25 × 8

or, V = 628 m³

So, The volume of cylinder = V  = 628 m³

Hence The volume of the cylinder shown in the figure is 628 cube meters  Answer

6 0
3 years ago
Identify the type of function represented by... please help
Vladimir [108]

Answer:

Exponential decay.

Step-by-step explanation:

You can use a graphing utility to check this pretty quickly, but you can also look at the equation and get the answer. Since the function has a variable in the exponent, it definitely won't be a linear equation. Quadratic equations are ones of the form ax^2 + bx + c, and your function doesn't look like that, so already you've ruled out two answers.

From the start, since we have a variable in the exponent, we can recognize that it's exponential. Figuring out growth or decay is a little more complicated. Having a negative sign out front can flip the graph; having a negative sign in the exponent flips the graph, too. In your case, you have no negatives; just 2(1/2)^x. What you need to note here, and you could use a few test points to check, is that as x gets bigger, (1/2) will get smaller and smaller. Think about it. When x = 0, 2(1/2)^0 simplifies to just 2. When x = 1, 2(1/2)^1 simplifies to 1. Already, we can tell that this graph is declining, but if you want to make sure, try a really big value for x, like 100. 2(1/2)^100 is a value very very very veeery close to 0. Therefore, you can tell that as the exponent gets larger, the value of the function goes down and gets closer and closer to zero. This means that it can't be exponential growth. In the case of exponential growth, as the exponent gets bigger, your output should increase, too.

3 0
3 years ago
Other questions:
  • What is the inverse of 3/x^2
    5·1 answer
  • Janelle is planning a party. The cost for 20 people is $290. The cost for 45 people is $590. Write the equation in slope interce
    13·1 answer
  • Answer and working out please!
    6·1 answer
  • QUESTION 10
    12·1 answer
  • Round to the nearest ten and hundred 363
    6·1 answer
  • How do i factorise this equation<br> a²+7a+12
    15·1 answer
  • Prove this ~ cosx/1-tanx + sinx/1-cotx = cosx + sinx
    15·1 answer
  • 2. A physical fitness researcher devises a test of strength and finds that the results are normally distributed with a mean of 1
    15·1 answer
  • The price of an item yesterday was $60. Today, the price rose to 147. Find the percentage increase.
    12·2 answers
  • Select all the statements that are true
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!