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sertanlavr [38]
2 years ago
7

Jonas bought 3 books. Each book was the same price. After using a $10-off coupon, the total charge was $20. Which equation can b

e used to find b, the cost of each book?
Mathematics
1 answer:
Brums [2.3K]2 years ago
8 0

Answer:

3b-10=20

Step-by-step explanation:

3b-10=20

3b-10+10=20+10

3b=30

3b/3=30/3

b=10

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garik1379 [7]

Answer:

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Step-by-step explanation:

4 0
3 years ago
1. What is the radius<br> (1 Point)<br> 11 cm
mr_godi [17]

Given that we need to determine the radius of the circle.

<u>Radius:</u>

By definition of radius of circle, the radius is the  length of the line which is drawn from the center of the circle to any point on the circle.

From the figure, we need to determine the radius of the circle.

As, we can see that, the distance from the center of the circle to the point on the circle is 11 cm.

Since, we know that, the radius is the distance from the center of the circle to the point on the circle then, the radius of the given circle is 11 cm

Thus, radius of the circle is 11 cm.

3 0
3 years ago
Work out the surface area of the solid cuboid<br> H=2cm<br> W=4cm<br> L=5cm
Nitella [24]

Answer:

total surface area = 76 sq.cm

Step-by-step explanation:

total surface area of cuboid = 2 ( lb + lh + bh )

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so, surface area :

= 2[ (5×4) + (5×2) + (2×4) ]

= 2 [ 20 + 10 + 8 ]

= 2 × 38

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6 0
3 years ago
Mary is solving the equation 2n – 3 = 83. Her first three steps are shown:
Stells [14]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
2^n - 3 = 83 
<span>2^n = 86 </span>
<span>ln(2^n) = ln(86) </span>
<span>n*ln(2) = ln(86) </span>
<span>n= ln(86)/[ln(2)] (which is the same as "log base 2 of 86") </span>
<span>n= 6.426264755</span>

7 0
3 years ago
How to calculate the area of a triangle with the hypotenuse as an arc?
agasfer [191]
The arc of the triangle 
7 0
3 years ago
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