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Leni [432]
3 years ago
14

Tracy spent $38 less than 3 times what daniel spent. How much did daniel spend?

Mathematics
2 answers:
uysha [10]3 years ago
8 0
I think the answer is 144.
Marizza181 [45]3 years ago
4 0
X = Daniel spentY = Tracy spent Tracy spent = Y$38 less than = -383 times Daniel spent = 3X Put it all together Y=3X-38
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PLEASE help
astraxan [27]

Answer:

The percentage of people should be seen by the doctor between 13 and

17 minutes is 68% ⇒ 2nd term

Step-by-step explanation:

* Lets explain how to solve the problem

- Wait times at a doctor's office are typically 15 minutes, with a standard

 deviation of 2 minutes

- We want to find the  percentage of people should be seen by the

 doctor between 13 and 17 minutes

* To find the percentage we will find z-score

∵ The rule the z-score is z = (x - μ)/σ , where

# x is the score

# μ is the mean

# σ is the standard deviation

∵ The mean is 15 minutes and standard deviation is 2 minutes

∴ μ = 15 , σ = 2

∵ The people should be seen by the doctor between 13 and

   17 minutes

∵ x = 13 and 17

∴ z = \frac{13-15}{2}=\frac{-2}{2}=-1

∴ z = \frac{17-15}{2}=\frac{2}{2}=1

- Lets use the standard normal distribution table

∵ P(z > -1) = 0.15866

∵ P(z < 1) = 0.84134

∴ P(-1 < z < 1) = 0.84134 - 0.15866 = 0.68268 ≅ 0.68

∵ P(13 < x < 17) = P(-1 < z < 1)

∴ P(13 < x < 17) = 0.68 × 100% = 68%

* The percentage of people should be seen by the doctor between

  13 and 17 minutes is 68%

6 0
2 years ago
Count back write the difference = 11 - 3
sergey [27]

Answer:

11-3=8

Step-by-step explanation:

so your answer is going to equal 8

4 0
3 years ago
Read 2 more answers
A small bar of gold measure 40 mm by 25 mm. by 2 mm. Find the volume in cubic millimeters.
vladimir2022 [97]

Answer:

2000 mm^3* .0005oz/1mm^3=1oz

Step-by-step explanation:

v=40mm*25mm*2mm=2000mm^3

7 0
3 years ago
Read 2 more answers
At last year's company picnic, 25 pounds of ground beef were needed to make 100 hamburgers.How many pounds of ground beef will b
AVprozaik [17]

Answer:

30

Step-by-step explanation:


4 0
3 years ago
HELP...The volume of a rectangular prism is 36x^6y^8. The length of the prism is 4x^3y^5, and the width of the prism is 3xy^2. W
Margaret [11]

Answer:

H = 3x^2y

Step-by-step explanation:

Given

V = 36x&^6y^8

L = 4x^3y^5

W = 3xy^2

Required

Find the height of the prism

Volume (V) is calculated as:

V =LWH

Substitute values for V, L and W

36x^6y^8 =4x^3y^5 * 3xy^2 * H

Make H the subject

H = \frac{36x^6y^8}{4x^3y^5 * 3xy^2}

H = \frac{36x^6y^8}{4*3x^3*x*y^5y^2}

H = \frac{36x^6y^8}{12x^4*y^7}

Divide:

H = 3x^{6-4}y^{8-7}

H = 3x^2y

The height of the prism is: 3x^2y

4 0
2 years ago
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