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vlabodo [156]
3 years ago
11

Help please .!!!!!!!!?

Mathematics
2 answers:
love history [14]3 years ago
8 0
The factored answer is (4x + 1) • (4x - 1). If you need step by step factorization work just let me know.
sammy [17]3 years ago
4 0
15x over 2 dont know how to do it on computer

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Please help ASAP. No links!!
Mariulka [41]

Answer:

C is greatest to fraction

6 0
3 years ago
Read 2 more answers
Wayne's class is building a wagon to be used as a float for the upcoming Pioneers Day Parade. The outsides of the four wagon whe
dalvyx [7]

Answer:

30

120

706.5

Step-by-step explanation:

circumference= 94.2 inches, circumference is pi x diameter so-

diameter = 94.2/pi inches.

Using 3.14 as an approximation for pi we get:

Diameter=30 inches.

So would need a length of at least

4x30 = 120 inches of felt for four wheels.

The area of the circular wheel is pi x diameter 2/4 square inches.

Area is 706.5 square inches which is how much felt is needed to cover one wheel.

3 0
3 years ago
Solve the equation 12a3 + 12a2 = -3a. Show all work.
Artist 52 [7]

12a³ + 12a² = -3a       | + 3a

12a³ + 12a² + 3a = 0

3a(4a² + 4a + 1) = 0

3a(2a + 1)² = 0

3a = 0 or (2a + 1)² = 0

1) 3a = 0      | : 3

a = 0

2) (2a + 1)² = 0

2a + 1 = 0           | - 1

2a = -1           | : 2

a = -1/2

a ∈ {-1/2, 0}

Used formula:

(a + b)² = a² + 2ab + b²

7 0
3 years ago
It cost $350 to carpet an 8‘ x 10‘ room. At this rate how many dollars would it cost to put the same carpeting in a 24‘ x 30‘ ro
RUDIKE [14]

Answer:

$1050

Step-by-step explanation:

The total area of the second space is three times the first one, thus the price increases to triple the amount.

4 0
3 years ago
in a significance test of one population mean if vairance of population is unknown but the sample size is 30 or more we use z te
Talja [164]

The student T distribution would be used since we don't know the population variance (by extension the population standard deviation).

However, if n > 30, then the student T distribution is going to look very similar to the standard normal Z distribution. It won't be a perfect match, but it'll be close enough that it's more simple to use the Z distribution. With the Z distribution, you only have one set of values and you don't have to worry about the degrees of freedom.

4 0
1 year ago
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