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Simora [160]
3 years ago
15

Lydia and Claudia have the same number of charms in their collections. Lydia started with 6 charms and bought 3 more packs. Clau

dia started with 9 charms and bought 2 more packs. If each pack had x charms, which equation can be used to find x? A. x = (2+ 3) - (6 +9) B. x = 6 + 3 + 9 + 2 C. 6x + 3 = 9x + 2 D. 3x - 2x = 6 +9 E. 3x + 6 = 2x + 9
Mathematics
1 answer:
serious [3.7K]3 years ago
7 0

Answer:

E. 3x + 6 = 2x + 9

Step-by-step explanation:

The total number of charms that Lydia has in term of x

6 + 3x

The total number of charms that Claudia has in term of x

9 + 2x

Since they have the same number of charms, we can set these 2 equations above equals to each other

6 + 3x = 9 + 2x

x = 9-6 = 3

So E is the correct answer

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A trinomal that has a greatesr common factor of 1 is prime? Yes or no
puteri [66]

Answer:

yes

Step-by-step explanation:

yes it is im pretty sure

8 0
3 years ago
A survey of 32 different gas stations in Texas found the average price of gasoline to be $3.19 a gallon with a sample standard d
Leni [432]

Answer:

The value of test statistic is -4.1247

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $3.26 a gallon

Sample mean, \bar{x} = $3.19 a gallon

Sample size, n = 32

Sample standard deviation, σ = $0.096

First, we design the null and the alternate hypothesis

H_{0}: \mu = 3.26\text{ dollars a gallon}\\H_A: \mu < 3.26\text{ dollars a gallon}

We use one-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{3.19 - 3.26}{\frac{0.096}{\sqrt{32}} } = -4.1247

Thus, the value of test statistic is -4.1247

3 0
2 years ago
Please help me with this math problem, urgent please
cestrela7 [59]

Answer:

y = -3.5x + 15

Step-by-step explanation:

Your slope-intercept equation is always y = mx + b

Using this formula, we need to find slope first: m = (y2-y1) / (x2-x1)

Step 1: Find slope

m = (1-8) / (4-2)

m = -7/2

Step 2: Plug in into slope-intercept form

y = -3.5x + b

Step 3: Find <em>b </em>(Plug in a coordinate given)

1 = -3.5(4) + b

1 = -14 + b

b = 15

Step 4: Combine it all together

y = -3.5x + 15

And you have your final answer.

3 0
3 years ago
The cylinder is 20cm high and radius of its circular face is 3cm What is the total perimeter and area of the whole net?
trasher [3.6K]

Answer: 52\ cm,\ 176.55\ cm^2

Step-by-step explanation:

Given

The cylinder is 20 cm high

The radius of the cylinder is r=3\ cm

The total area of the figure is the sum of the rectangle and two circles

\Rightarrow \text{Perimeter P=}2[h+2r]\\\Rightarrow P=2[20+6]\\\Rightarrow P=52\ cm

The total area of the figure is

\Rightarrow \text{Area A=}h\times 2r+2\pi r^2\\\Rightarrow A=20\times 6+2\times \pi \times 3^2\\\Rightarrow A=120+18\pi\\\Rightarrow A=176.55\ cm^2

3 0
2 years ago
Bella saw that 7 out of 11 people brought an umbrella to the beach. There were 99 people there. How many of them did NOT have an
Alex
36 of them did not have an umbrella because out of 11 people, 4 did not bring an umbrella.
5 0
3 years ago
Read 2 more answers
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