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ivann1987 [24]
3 years ago
9

Tell me quick please

Mathematics
2 answers:
Alika [10]3 years ago
8 0
Number six is 4x4 there because 4x4= 16
Keith_Richards [23]3 years ago
6 0
1. C
2. A
3. C
4. B
5. C
6. B
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Given that Triangle ABC such that<br>a=8cm, b=7cm and c=9cm<br>tem and c= 9cm find Cos B​
charle [14.2K]

Answer:

We use cosine rule also called cosine law which states

c^2=a^2+b^2-2abcosC

given

a=8cm, b=7cm, c=9cm cos C?

9^2=8^+7^2-2*8*7 cos C

expand

81=64+49-112 cos C

like terms together

81-113=-112 cos C

-32=-112cos C

multiply both sides by -1

32=112cos C

divide both sides by 112

32/112=cos C

cosC=0.2857

find cos inverse of 0.2857

angle C= 73.40

4 0
3 years ago
What is the answer to this problem step by step (3+2)^2×7)-13+5^2?
Ainat [17]

Answer:

187

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>

(3 + 2)² × 7 - 13 + 5²

<u>Step 2: Evaluate</u>

  1. (Parenthesis) Add:                     5² × 7 - 13 + 5²
  2. Exponents:                                 25 × 7 - 13 + 25
  3. Multiply:                                      175 - 13 + 25
  4. Subtract:                                     162 + 25
  5. Add:                                            187
5 0
2 years ago
PLEASE HELP ME<br> Use the function below to find f(2).<br><br> f(x) = 1/3 x 4^x
Anna71 [15]

f(2) This means that x is 2, so you plug in 2 for x in the equation

f(x)=\frac{1}{3} (4^x)

f(2)=\frac{1}{3}(4^2)

f(2)=\frac{1}{3} (16)

f(2)=\frac{16}{3}


Your answer is D

4 0
3 years ago
Read 2 more answers
A computer programm contains one error.in order to find the error, we split the program in to blocks and test 2 of them,selected
kolezko [41]
If the E(X) = 1 then that means it has a 100% which is incorrect.
Each block has an equal probability to contain the error so 1/3 because you choose 2/6.
5 0
3 years ago
What happened to the snowman during the heat wave
antoniya [11.8K]

Answer:he melted

Step-by-step explanation: winters a good time to stay in and cuddle but put me in summer and i'll be a happy snow man

5 0
3 years ago
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