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3 years ago

Anyone know how to solve this step by step?

Mathematics

1 answer:

ira [324]3 years ago

3 0

Answer:

-1/2 or x=2

Step-by-step explanation: The first step you need to do in getting your answer is factoring ,you will factor the left side of the equation first:

(2x+1)(x-2)=0

Next, you will set the factors to equal to "0":

2x+1=0 x-2=0

Then you'll proceed to solve the problem using the basic algebraic equation problem solving steps .When you do this you'll be left with answers of x=-1/2 and x=2

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What is the vertex if the function f(x)=-x^2-2x-1

Mila [183]

Vertex=(-1,0)

x^2-2x-1

y=− ( x + 1 )^2 + 0

Use the vertex form, y=a(x−h)^2+k, to determine the values of a, h, and k.

Find the vertex (h,k) = (-1,0)

7 0

3 years ago

A certain shampoo is available in two sizes. A 13.5 ounces bottle cost $2.98. A 29.2 ounce bottle cost $6.12. Find the Unit pric

Sladkaya [172]

Answer:

9.2 ounce bottle cost $6.12 is better buy with unit price of $0.22

Step-by-step explanation:

Unit price of any product is given by

unit price = weight of product/ price of product

Given sizes

13.5 ounces bottle cost $2.98

cost of 1 ounce of shampoo for this size = cost price/weight of shampoo

cost of 1 ounce of shampoo for this size =2.98/13.5 = $0.22

Unit price for this size is $.022

9.2 ounce bottle cost $6.12

cost of 1 ounce of shampoo for this size = cost price/weight of shampoo

cost of 1 ounce of shampoo for this size =6.12/9.2 = 0.66

Unit price for this size is $0.66

As $0.22 is less than $0.66 thus,

9.2 ounce bottle cost $6.12 is better buy.

6 0

3 years ago

Find the missing angle measure A=51°, B=82°, C=5x+2

Shalnov [3]

I'm assuming you mean triangle angles?
If so, all angles add up to 180 so combine them and set them equal to 180.
51+82+5x+2=180
135+5x=180
5x=45
x=9

8 0

3 years ago

A sphere has a diameter of 8cm

kow [346]

Answer:

Step-by-step explanation:

$V=\frac{4\pi r^3}{4}\\ \\ V=\frac{\pi d^3}{6}\\ \\ V=\frac{\pi 8^3}{6}\\ \\ V\approx 268.1cm^3$

8 0

2 years ago

How do I solve for w?

LenaWriter [7]

Answer:

w = 8

Step-by-step explanation:

Based on the altitude theorem of a right triangle, we have:

w + 4 = √(24*6)

w + 4 = √144

w + 4 = 12

w + 4 - 4 = 12 - 4

w = 8

4 0

3 years ago