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3 years ago

HELP ME PLEASE SOMEONE

Mathematics

2 answers:

Gwar [14]3 years ago

7 0

Answer:

with what?

Step-by-step explanation:

boyakko [2]3 years ago

5 0

Answer:

what's the question??

Step-by-step explanation:

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How to determine whether the pair of lines is parallel perpendicular or neither?

kodGreya [7K]

If the slopes of the 2 lines are equal then they are parallel.

If m1m2 = -1 (where m1 and m2 are the slopes of the 2 lines) then they are perpendicular.

If the 2 slopes do not match either the first or second conditions then they are neither parallel or perpendicular.

6 0

3 years ago

4. What is the next step if the data from an investigation do not support the original

Anit [1.1K]

Answer:

B: The hypothesis is revised and another experiment is conducted.

Step-by-step explanation:

If several different experiments all reveal that the hypothesis has not been confirmed, a revision of the hypothesis is in order. Perhaps it was the hypothesis all along that needed amendment.

5 0

3 years ago

I need help please with this math problem

Arada [10]

When the dilation is centered on the origin, you can multiply each of the individual coordinates by the scale factor.

All the coordinates are ±5 and the scale factor is 1/5. Multiplying those gives ±1. The only selection with all coordinates being ±1 is
.. Selection A.

You can check to see if the signs agree in detail. (They do.)

8 0

3 years ago

Renee wants to put a fence around her

kramer

Answer:

perimeter = 322.5 ft ( to the nearest tenth of a foot)

Step-by-step explanation:

Length the length of the sides of the square be L

Area of a square = L²

∴ 6,500 = L²

L = √(6,500)

L = 80.6226

Next Let us calculate the perimeter

Perimeter of a square = L + L + L + L = 4L

perimeter = 4 × 80.6226

Perimeter = 322.4904 ft

perimeter = 322.5 ft ( to the nearest tenth of a foot)

N:B rounding to the nearest tenth of a foot is same as rounding to 1 decimal place.

3 0

3 years ago

The cost of a daily newspaper varies from city to city. However, the variation among prices remains steady with a standard devia

My name is Ann [436]

Answer:

|t| =|-0.96|=0.96< 2.718

since calculated' t' value is less than tabulated value 't'.

we accept null hypothesis at 1 % level of significance.

The data support the claim that the mean cost of a daily news paper is $1.00

Step-by-step explanation:

Step:-(1)

Given the sample size n = 12

Given Twelve costs yield a mean cost of $0.95 with a standard deviation of $0.18

mean of the sample(x⁻) = $0.95

Standard deviation of sample (S) = $0.18

Given claim that the mean cost of a daily newspaper is $1.00.

The mean of the population 'μ' = $1.00.

Null hypothesis:-H₀:'μ' = $1.00.

Alternative hypothesis: H₁:'μ' ≠ $1.00.

level of significance ∝ = 0.01

Step2:-

The test statistic

$t = \frac{x^{-}-u_{0} }{\frac{S}{\sqrt{n} } }$

$t = \frac{0.95-1 }{\frac{0.18}{\sqrt{12} } }$

on calculation, we get

t = -0.96

|t| =|-0.96|=0.96

Degrees of freedom γ = n-1 = 12-1 =11

tₐ = 2.718

Calculated value t = 0.96

Tabulated value t at 0.01 level for 11 degrees for two tailed test = 2.718

since calculated' t' value is less than tabulated value 't'.

conclusion:-

we accept null hypothesis at 1 % level of significance.

The data support the claim that the mean cost of a daily news paper is $1.00

3 0

3 years ago