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4 years ago

One book costs $2.98 how much does four books cost

Mathematics

2 answers:

Nuetrik [128]4 years ago

7 0

2.98x4
$11.92.................

REY [17]4 years ago

5 0

___________________________________________________________________________________________________________________________________________________________________11.92

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Please help me with this question

Bezzdna [24]

Answer:

1.03

Step-by-step explanation:

To find the volume of a prism, find the area of the base and multiply it by the height.

The base is an octagon. The area is found $A = 2(1+\sqrt{2})a^2$ . Substitute a = 0.5.

$A = 2(1+\sqrt{2})(0.5^2)\\A = 4.828...(0.25)\\A = 1.21$

The volume is 1.21*2.5 = 3.025.

However, there are three holes drilled out half way which each have volume 0.06.

The volume is found as V = πr²h. Substitute r = 0.125 which is half the diameter of 0.25. Since they go half way, the height is h = 1.25.

V = π(0.125)²(1.25) = 0.06.

Since there are 3, they equal 3*0.06 = 0.18.

Subtract this from the volume.

1.21 - 0.18 = 1.03

4 0

3 years ago

Based on the information marked in the diagram, triangle PQR and triangle STU must be congruent

Rama09 [41]

Answer:

A. True

Step-by-step explanation:

5 0

2 years ago

Which equation, when solved, results in a different value of x than the other three?

Bess [88]

Is there any more information?

4 0

3 years ago

4. Sasha sells t-shirts. Each day she earns a set amount, plus a

zhannawk [14.2K]

Answer:

The linear function is: p(x) = 3x+65The linear function is: p(x) = 3x+65

Step-by-step explanation:

Let x be the number of t-shirts and y be the total pay

As we can clearly see in the table that there is a linear relationship between x and y

A linear function is given as:

$y = mx+b$

Here m is the gradient of the function then

$m = \frac{y_2-y_1}{x_2-x_1}$

Taking any two pairs of x and y

(1,68) and (2,71)

$m = \frac{71-68}{2-1}\\m = 3$

Putting in equation

$y = 3x+b$

Putting a pair (1,68) in the equation to find the value of b

$68 = 3(1) + b\\68 = 3+b\\b = 68-3\\b = 65$

Putting the value of b

$y = 3x+65$

Let p(x) be the linear function

Hence,

The linear function is: p(x) = 3x+65

8 0

3 years ago

There are 15 red, 14 green, and 9 yellow balls in a dark room. What is the minimum number of balls that Alicia needs to take so

Tems11 [23]

Answer:

Step-by-step explanation:

1. If you take 12 balls, 9 could be yellow and 3 could be red. We want at least 12 of the same color, so 30 balls isn't a good minimum

2. If you take 30 balls, 9 could be yellow, 10 could be red and 11 could be green. We want at least 12 of the same color, so 30 balls isn't a good minimum.

3. If you take 31 balls, 9 could be yellow, 11 could be red and 11 could be green. We want at least 12 of the same color, so 31 balls isn't a good minimum.

4. If you take 32 balls, 9 could be yellow, 11 could be red and 12 could be green or 9 could be yellow, 12 could be red and 11 could be green or 7 could be yellow, 13 could be red and 12 could be green or 9 could be yellow, 11 could be red and 12 could be green.

We want at least 12 of the same color, and we have it from the different samples of the 4th trial.

So, 32 balls is the minimum number of balls

8 0

3 years ago