All categories

3 years ago

Can someone help me pls

Mathematics

1 answer:

UNO [17]3 years ago

3 0

Answer:

Okay so for this one use the Pythagorean theorem

Step-by-step explanation:

A^2 + 28^2 = 128^2

You are trying to find A.

So 28^2 is 784

128^2 is 16384

Now you will subtract 784 from both sides of the equation your new equation should be this: a^2 = 15600

Now you find the square root of both sides which gives you: A= 124.89 round it to 125

You might be interested in

Use the information to answer the questions.

Anna71 [15]

Answer:

Part 1) The length of two sides and the measure of the included angle (Side-Angle-Side)

Part 2) $b^2=a^2+c^2-2(a)(c)cos(B)$

Part 3) $b=11.6\ in$

Step-by-step explanation:

we have

In the triangle ABC

$a=11\ in\\c=9\ in\\B=70^o$

Part 1) Which information about the triangle is given?

In this problem we have the length of two sides and the measure of the included angle (Side-Angle-Side)

see the attached figure to better understand the problem

Part 2) Which formula can you use ti find b?

I can use the law of cosines

$b^2=a^2+c^2-2(a)(c)cos(B)$

we have

$a=11\ in\\c=9\ in\\B=70^o$

substitute the given values

$b^2=11^2+9^2-2(11)(9)cos(70^o)$

$b^2=202-67.72$

$b=11.59\ in$

Part 3) What is b, rounded to the nearest tenth?

Remember that

To Round a number

a) Decide which is the last digit to keep

b) Leave it the same if the next digit is less than $5$ (this is called rounding down)

c) But increase it by $1$ if the next digit is $5$ or more (this is called rounding up)

In this problem we have

$11.59\ in$

We want to keep the digit $5$

The next digit is $9$ which is 5 or more, so increase the "5" by 1 to "6"

therefore

$b=11.6\ in$

4 0

3 years ago

George has $15. He tries to buy a movie ticket ($9.00), a pretzel ($2.65), a drink ($1.35), and two veggie cups ($1.74 each) but

mezya [45]

Answer:

He doesn't have enough money because the total of things he wants to buy is more than the money he has.

Step-by-step explanation:

9 + 2.65 + 1.35 + 2(1.74) must be less than or equal to 15. However all of this added together equals $16.48. This means that he doesn't have enough money.

6 0

2 years ago

Read 2 more answers

Compute the amount of interest earned in the following simple interest problem. A deposit of $1,295 at 7% for 180 days = _____.

givi [52]

I = Prt, where P = $1,295; r = 7/100 = 0.07, t = 180/365

I = 1,295 x 0.07 x 180/365 = $44.70

7 0

3 years ago

During the summer you charge eight dollars per hour for babysitting plus $10 in gas money for driving to the house if you Make $

maxonik [38]

Answer:

the answer is 4 hours

Step-by-step explanation:

42-10=32

for the gas money

32 divided by 8 =4 hours

7 0

3 years ago

0.35 as a simple fraction

Svetlanka [38]

Convert to a fraction by placing the decimal number over a power of 10 answer is 7/20

5 0

3 years ago

Read 2 more answers