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ivolga24 [154]
3 years ago
9

In ΔABC, the measure of ∠C=90°, BC = 16 feet, and AB = 48 feet. Find the measure of ∠B to the nearest tenth of a degree.

Mathematics
1 answer:
Annette [7]3 years ago
8 0

Answer:

70.5º

Step-by-step explanation:

cosB = adj/hyp

cosB = 16/48

cosB = 1/3

B = arccos 1/3

Use calculator

∠B = 70.5º

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Step-by-step explanation:

6 0
3 years ago
A number is equal to twice a smaller number plus 3. Yhe same number is equal to twice the sum of smaller number and 1. How many
allsm [11]

Answer:

There is no solution to the problem

Step-by-step explanation:

In order to find the solutions to the problem you can write the situation in an algebraic form.

You have that a number is equal to twice a smaller number plus 3. This can be written as follow:

x=2y+3      (1)

where x is the number and y is the smaller number

Furthermore, the same number x is equal to twice the sum of the smaller number and 1, which can be written as follow:

x=2(y+1)     (2)

To find the solution you equal the equation (1) with (2), and you solve for y:

2y+3=2y+1

3=1

You obtain an inconsistency, hence, the situation of the problem does not have solution

5 0
3 years ago
Your math grade is a 68%.You turn in some late work, and now your grade is an 82%.What is the percent change?
Alex

Answer:

your grade increased by 14%

7 0
2 years ago
What's the algebraic expression of "15 less than a number squared"?
torisob [31]
Again take the variable to be x
x^12-15
8 0
3 years ago
How do i solve these and graph them ?!
Ainat [17]
Use Desmos. It is good.

Here is the graph.
https://www.desmos.com/calculator/wq4kzps9fq

To change the color, you have to click on the line next to the formula for a long time. A window will pop up so you can change the color.
4 0
3 years ago
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