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4 years ago

BRAINLIEST + POINTS HELPPPPPPPPPPPP

Mathematics

1 answer:

Damm [24]4 years ago

5 0

Answer:

B. 12/5

Correct me if I am wrong

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Hello! I need help with this problem thanks!!

Helen [10]

Answer:

10 tomato plants and

15 rose plants

Step-by-step explanation:

Let t be the no. of tomato plants,

And r the no. of rose plants

t + r = 25

t + 2r = 40

t = 25 - r

25 - r + 2r = 40

r = 15

t = 25 - 15

t = 10

8 0

3 years ago

How can the lengths of corresponding sides within similar triangles be helpful in finding unknown side lengths?

klemol [59]

Because you only have to find the length of one side to find the length of the rest of the sides.

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3 years ago

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Find X, round your answer to the nearest tenth of a degree.

murzikaleks [220]

Answer:

Step-by-step explanation:

$\text{Use sine}=\dfrac{opposite}{hypotenuse}\\\\\text{We have}\ opposite=7,\ hypotenuse=12.\\\\\text{Substitute:}\\\\\sin x=\dfrac{7}{12}\approx0.5833\\\\x\approx35.7^o\\\\/look\ at\ the\ table\ in\ the\ attachment/$

6 0

3 years ago

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Here are summary statistics for randomly selected weights of newborn girls: n=185,

Anna11 [10]

Answer:

The confidence interval for the population mean μ is $32.487$

Step-by-step explanation:

Given :

Number of weights of newborn girls n=185.

Mean $\bar{x}=31.4$ hg

Standard deviation s=7.5 hg

Use a 95% confidence level i.e. cl=0.95

To find : What is the confidence interval for the population mean μ?

Solution :

Using t-distribution,

The degree of freedom $DF=n-1=185-1=184$

$\alpha=\frac{1-0.95}{2}$

$\alpha=0.025$

The t critical value is t=1.973.

The confidence interval build is

$CI=\bar{x}\pm(t\cdot \frac{s}{\sqrt{n}})$

Substitute the values,

$CI=31.4\pm(1.973\cdot \frac{7.5}{\sqrt{185}})$

$CI=31.4\pm(1.973\cdot 0.5514)$

$CI=31.4\pm(1.087)$

$31.4+1.087$

$32.487$

Therefore, the confidence interval for the population mean μ is $32.487$

6 0

3 years ago

Write the equation of the parabola in vertex form.

BigorU [14]

F(x) = 5(x - 3) + 1

Find slope by using the vertex point and the other point given. You get 5. Then the vertex point is just the opposite x and the number after the parentheses.

3 0

3 years ago