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3 years ago

10

Evaluate the expression for a^2 + b ÷3 when a = 3 and b = 6

1 answer:

Flura [38]3 years ago

8 0

Answer:

11

Step-by-step explanation:

3^2 + 6/3

9 + 2

11

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100-3y+4y-3y2 simplified btw I don't have a lot of points

erastova [34]

Answer:

-3y^2 + y + 100

Step-by-step explanation:

Combine like terms.

-3y+4y = 1y or "y"

Add "y" back into the equation.

-3y^2 + y + 100

The equation cannot be simplified any further.

I hope this helped!

4 0

3 years ago

Read 2 more answers

2^sinx+2^cosx find the minimum value of this trignometry

Anit [1.1K]

Take the deritiivive
$ln(2)cos(x)2^{sin(x)}-ln(2)sin(x)2^{cos(x)}$
it is zero at pi/4 and it repeats at every pi
minimum at where slope goesfrom negative to positive
so at 5pi/4 and 13pi/4 so at every 2pi interval

evaluate origial at 5pi/4
$2^{sin(5pi/4)}+2^{cos(5pi/4)}$ =
$(2^ \frac{- \sqrt{2} }{2} )+(2^ \frac{- \sqrt{2} }{2} )$ =
$2(2^ \frac{- \sqrt{2} }{2} )$ or aprox 1.22509

5 0

4 years ago

Kelsey can buy 2 pounds of apples for 7$. Write an equation to represent the cost, c, for a, pounds of apples.

zmey [24]

$\huge\boxed{c=3.5a}$

First, we need to find how much a single pound of apples costs.

Do this by dividing.

$\frac{\$7}{2\ \text{lbs.}}\div\frac{2}{2}=\frac{\$(7\div 2)}{(2\div 2)\ \text{lbs.}} = \frac{\boxed{\$3.50}}{1\ \text{lb.}}$

Now, write an equation.

$\large\boxed{c=3.5a}$

This represents that the cost equals 3.5 times the number of apples.

8 0

3 years ago

Read 2 more answers

Madison needs to buy enough meat to make 1,000 hamburgers will weigh 0.25 pound. How many pounds of hamburger meat should Madiso

Elan Coil [88]

Answer:

Madison is gonna need to buy 250 pounds of meat.

Feel free to Brainliest :)

8 0

4 years ago

Mrs drew wants to build a square sandbox with an area of 169 square feet. What is the total length of wood mrs. Drew needs to ma

Bezzdna [24]

Area of sandbox = 169 square feet

Area of square with side 'x' is given by the formula = $x^2$

We have to determine the total length of wood Drew needs to make the sides of the sandbox.

Total length of wood required would be equal to perimeter of sandbox.

Let 'a' be the side of the square sandbox.

So, Area of sandbox = 169

$a^2 = 169$

$a = \sqr{169}$

a = 13 feet

Total length of wood required to make sides of the sandbox = Perimeter of the square sandbox = $4 \times a$

= $4 \times 13$

= 52 feet.

Therefore, 52 feet of wood is required to make the sides of the square sandbox.

7 0

3 years ago