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iris [78.8K]
2 years ago
12

Round to the nearest hundredths

Mathematics
1 answer:
Gennadij [26K]2 years ago
7 0

Answer:

AC = 2.96

Step-by-step explanation:

Use the trigonometric ratio cosine:

cosine = adjacent ÷ hypotenuse

cos(65°) = AC ÷ 7

cos(65) = \frac{AC}{7}

Multiply both sides by 7:

7(cos(65)) = AC

(Note: Set your calculator to degrees!)

And plug 7(cos(65)) into your calculator to get:

AC ≈ 2.96

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PLS HELP !!! I need this question done quick
NeX [460]

Answer:

a. 17  b. 51

Step-by-step explanation:

Follow Order of Operations (PEMDAS):

Parentheses, Exponents, Multiplication/Division, Addition/Subtraction

a.  9 + 4² - (4-2) • 4

9 + 4² - (4-2) • 4 –––Start with (4-2) = 2 (parentheses)

9 + 4² - 2 • 4 ––– 4² (exponents)

9 + 16 - 2 • 4 ––– 2 • 4 (multiplication)

9 + 16 - 8 ––– 9 + 16 (addition)

25 - 8 ––– 25 - 8 (subtraction)

17

b. 15 - 4 + 2(7-3) • 5

15 - 4 + 2(7-3) • 5 ––– Start with 2(7-3)

~ Note: this can be done using distributive property (2•7 - 2•3) OR solving the parentheses first and then multiplying 2(4). Both get 8 and same end result.

15 - 4 + 8 • 5 ––– 8 • 5 (multiplication)

15 - 4 + 40 ––– 15 - 4 (subtraction) *Note: Subtraction and addition are interchangeable in the order because you do it left to right*

11 + 40 ––– 11 + 40 (addition)

51

5 0
2 years ago
Read 2 more answers
Simplify -2^3. <br><br><br> -8<br> -6<br> 6<br> 8
Lubov Fominskaja [6]

Answer: The answer is A) -8

Step-by-step explanation: You get this answer by doing these steps:

2x2x2

-2x2=-4

-4x2=-8

5 0
2 years ago
Read 2 more answers
$1400 at 1.25% for 3 years what is the balance of the account
grin007 [14]

Answer:

\$1,452.5

Step-by-step explanation:

we know that

The simple interest formula is equal to

A=P(1+rt)

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=3\ years\\ P=\$1,400\\r=0.0125

substitute in the formula above

A=\$1,400(1+0.0125*3)

A=\$1,400(1.0375)=\$1,452.5

7 0
3 years ago
Community Gym charges a $40 membership fee and a $65 monthly fee. Workout Gym charges a $190 membership fee and a $55 monthly fe
mr Goodwill [35]

Answer:

Step-by-step explanation:

65m + 40 = 55m + 190

65m - 55m = 190 - 40

10m = 150

m = 15 months

4 0
3 years ago
Solve each problem show your work
Naily [24]
1. 5 1/2 cm
2. 2 1/4 in
3. 2 1/4 in
4. 1.01 in
5. 5.3 mm
5 0
2 years ago
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