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Karo-lina-s [1.5K]
2 years ago
15

Amanda needs to cut a board to use for a project. The board is 10 feet long. She first has to cut off 1 3/4 feet from one end of

the
board. She then cuts the remaining section of board into 4 equal pieces.
Which equation can be used to determine the the length of each equal piece?

o 4x – 1 3/4 = 10
o 1 3/4x - 4=10
o 4x + 1 3/4 = 10
1 3/4x +4= 10
Mathematics
2 answers:
masya89 [10]2 years ago
8 0

Answer : 4x + 1 3/4 = 10

Step - by - step explanation : The reason 4 has an " x " at the end of it is because we don't know its exact number

Eduardwww [97]2 years ago
3 0

Answer:

4x + 1 3/4 = 10

Step-by-step explanation:

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i keel asking for the dang answer why wont anyone tell me it a store sells pencils pens and markers that sells two times as many
babunello [35]

Answer:

Pencils = 325 ; Pens = 975 ; Markers = 650

Step-by-step explanation:

Let :

Number of Pencils = x

Number of pens = y

Number of markers = z

2 times as many markers as pencils

z = 2x

3 times as many pens as pencils

y = 3x

x + y + z = 1950

Write z and y in terms of x in the equation :

x + 3x + 2x = 1950

6x = 1950

Divide both sides by 6

6x / 6 = 1950 / 6

x = 325

Number of pencils = 325

Pens = 3 * 325 = 975

Markers = 2 * 325 = 650

Pencils = 325 ; Pens = 975 ; Markers = 650

6 0
3 years ago
Determine the better buy. 12 oz for $2.69 or 16 oz for $2.49?
topjm [15]
12 oz for 2.68 = .22 per unit
16 oz for 2.49 = .16 per unit

the 16 oz for 2.49 is your better deal

5 0
3 years ago
Read 2 more answers
1. A report from the Secretary of Health and Human Services stated that 70% of single-vehicle traffic fatalities that occur at n
Nuetrik [128]

Using the binomial distribution, it is found that there is a 0.7215 = 72.15% probability that between 10 and 15, inclusive, accidents involved drivers who were intoxicated.

For each fatality, there are only two possible outcomes, either it involved an intoxicated driver, or it did not. The probability of a fatality involving an intoxicated driver is independent of any other fatality, which means that the binomial distribution is used to solve this question.

Binomial probability distribution

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • 70% of fatalities involve an intoxicated driver, hence p = 0.7.
  • A sample of 15 fatalities is taken, hence n = 15.

The probability is:

P(10 \leq X \leq 15) = P(X = 10) + P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14) + P(X = 15)

Hence

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 10) = C_{15,10}.(0.7)^{10}.(0.3)^{5} = 0.2061

P(X = 11) = C_{15,11}.(0.7)^{11}.(0.3)^{4} = 0.2186

P(X = 12) = C_{15,12}.(0.7)^{12}.(0.3)^{3} = 0.1700

P(X = 13) = C_{15,13}.(0.7)^{13}.(0.3)^{2} = 0.0916

P(X = 14) = C_{15,14}.(0.7)^{14}.(0.3)^{1} = 0.0305

P(X = 15) = C_{15,15}.(0.7)^{15}.(0.3)^{0} = 0.0047

Then:

P(10 \leq X \leq 15) = P(X = 10) + P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14) + P(X = 15) = 0.2061 + 0.2186 + 0.1700 + 0.0916 + 0.0305 + 0.0047 = 0.7215

0.7215 = 72.15% probability that between 10 and 15, inclusive, accidents involved drivers who were intoxicated.

A similar problem is given at brainly.com/question/24863377

5 0
3 years ago
A park is shaped like a trapezoid. It has an area of 7.2 square miles. One base is 1.2 miles, and the other base is 2.4 miles lo
WINSTONCH [101]
7.2÷(1.2+2.4)=2
2÷.5=4
So the height equals 4
6 0
3 years ago
A map scale is 1 cm :50Km.Two cities are 3.8cm apart .How many kilometers is it from on e city to the other
Gennadij [26K]
So what you do is you want to multiply
3.8 × 50=190km

6 0
3 years ago
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