All categories

2 years ago

What is the value of a2+c•(2+b) when a =3 , b=6 and c=5

Mathematics

2 answers:

andrey2020 [161]2 years ago

8 0

Answer:

Step-by-step explanation:

a² + c(2+b) = a² + 2c+bc

Expand first.

a² + 2c+bc = 3² + 2(5) + 6×5

Substitute a, b and c with actual values.

3² + 2(5) + 6×5 = 9 + 10 + 30

Evaluate.

9 + 10 + 30 = 49

Simplify.

DerKrebs [107]2 years ago

7 0

Answer:

46 is the answer

Step-by-step explanation:

Because:

a2 + c(2+b)

3(2) + 5(2+6)

6 + 5(8)

6 + 40

You might be interested in

When the Olympic Games were held outside Mexico City in 1968, there was much discussion about the effect the high altitude (7340

Artyom0805 [142]

Answer: By moving from sea level to Mexico City air pressure is reduced by 25%.

Step-by-step explanation:

Hi, to answer this we have to apply a decrease rate formula

P0 (1-r)^x

Where:

p0= initial pressure

r = decrease rate. (0.4 = 0.4/100=0.004 decimal form)

x = feet (hundredths, since the air pressure decays every 100 feet we have to divide the input value by 100)

Replacing with the values given

P0 (1- 0.4/100)^(7340/100) =

P0 (0.996)^73.4 =

P0 ( 0.75)=

The air pressure at Mexico City compared to the sea level is 75% (0.75 x 100 =75%)

To obtain the percent decrease

100% -75% =25%

7 0

2 years ago

PLEASE HELP ILLL DO ANYTHJNG ITS MY LAST QUESTION PLS HELP!!

pshichka [43]

Answer: dont know im lost

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

How do I verify this identity? I know you should write sin2a as sin(a+a).

Kisachek [45]

SOLUTION

Given the question in the image, the following are the solution steps to verify the identity

STEP 1: Write the given identity

$\sin 2\alpha=2\sin \alpha\cos \alpha$

STEP 2: Verify the identity

$\begin{gathered} \sin 2\alpha=2\sin \alpha\cos \alpha \\ \text{Consider the left hand side of the above trigonometry identity.} \\ \text{That is, }\sin 2\alpha\text{.} \\ \text{ Rewrite }\sin 2\alpha\text{ as }\sin (\alpha+a) \\ \text{ It is known that }\sin (a+b)=\sin (a)\cos b+\cos (a)\sin (b) \\ U\sin g\text{ this statement above, we have;} \\ \sin (\alpha+a)=\sin a\cos \alpha+\cos a\sin \alpha \\ \text{It is known that }xy+yx=xy+xy=2\times xy=2xy \\ U\sin g\text{ this statement above, we have;} \\ \sin a\cos \alpha+\cos a\sin \alpha=\sin a\cos \alpha+\sin \alpha\cos \alpha=2\times\sin \alpha\cos \alpha=2\sin \alpha\cos \alpha \\ \text{Hence, }\sin 2\alpha=2\sin \alpha\cos \alpha \end{gathered}$

The verification of the identity is as seen above.

7 0

10 months ago

Given: sin θ = 0.8660 hypotenuse = 0.25 Find: θ = (please explain).

Bad White [126]

Answer:

Given that

sinθ = 0.8660

⇒ sinθ = 0.8660 = √3/2

⇒ θ = sin⁻¹(√3/2)

⇒ θ = 60°

8 0

3 years ago

Read 2 more answers

Select the correct answer. Which function is the inverse of f(x) = -x3 − 9? A. B. C. D.

Masja [62]

Answer:

-3 = x

Step-by-step explanation:

0 = -x3-9

9=-x3

3=-x

-3=x

4 0

2 years ago

Read 2 more answers