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Gala2k [10]
3 years ago
7

Evaluate ab – 0.5b when a = 1 and b = 5.​

Mathematics
1 answer:
Alexeev081 [22]3 years ago
4 0

Answer:

2.5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

ab - 0.5b

a = 1

b = 5

<u>Step 2: Evaluate</u>

  1. Substitute:                    1(5) - 0.5(5)
  2. Multiply:                        5 - 2.5
  3. Subtract:                       2.5
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Use the Law of Sines to solve for x. Round to the nearest whole number.
bagirrra123 [75]

Answer:

12.94

Step-by-step explanation:

By the law of sines:

x / sin(35) = 7.9 / sin70

x = 7.9 * sin(70)/sin(35)

= 7.9 * 0.9397 / 0.5736

= 12.94

6 0
3 years ago
Guys I need your help , what is - 16t2 + 64+ + 3?
bija089 [108]

Answer:

the answer is -32t + 67

Step-by-step explanation:

-16t2 +64 + 3

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3 years ago
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There are 35 students in a drama club two out of every five boys in the club are boys how much diamonds in the club are boys
andrew11 [14]

Given:

Number of students = 35

Two out of every five boys in the club are boys.

To find:

The number of students in the club that are boys.

Solution:

Two out of every five boys in the club are boys. It means, the ratio of boys to the total number of student is 2:5.

Let the number of boys be 2x and number of students be 5x.

According to the question,

5x=35

x=7

Now, the number of boys is

2x=2(7)

2x=14

Therefore, 14 students in the club are boys.

8 0
3 years ago
Tim drives at an average speed of 80 km per hour for 3 hours and 45 minutes. work out how may kilometers Tim drives.
lara31 [8.8K]
Hey there!


Tim drives 300 kilometers.


Work: 80 x 3 = 240
Then, 45 minutes is 3/4 of an hour, so if you were to do 3/4 of 80  it is 60
Now, add 240 + 60 = 300

Hope I was able to help!
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3 years ago
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How do you solve this??? Someone help. We just started learning Pythagoras Theorems..
ira [324]

Answer:

It means length of the hypotenuse is equal to the sum of squares of the lengths of other two sides of the right-angled triangle.

Step-by-step explanation:

to solve this...we think that distance from ben to church is x...now a triangle is formed.

length of the hypotenuse is 13cm

{13}^{2}  =  {8}^{2}  +  {x}^{2}

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169 - 64 =  {x}^{2}

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\sqrt{105}  = x

x = 10.246950766

If you have any question...please comment me...If I was helpful..mark me as brainliest

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3 years ago
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