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3 years ago

Based on the side lengths given (a, b, and c), which triangles are right triangles?

Mathematics

2 answers:

ryzh [129]3 years ago

8 0

Thank lord for you please thank you lord lord please thank you please thank you lord please please thank you please thank you lord lord for help please please answer me please please answer answer please please lord thank you please thank you lord lord thank you please thank you lord lord for help please lord thank you please thank you thank you lord please thank you please thank you lord please thank you lord lord for you thank

ASHA 777 [7]3 years ago

4 0

Answer:

It's the third option.

Step-by-step explanation:

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Could someone please help me answer questions 2,3 & 4. Please show your workings.

kirill [66]

1)
x^2 -5x + 4 = 0
(x -4)(x - 1) = 0
x - 4 = 0; x = 4
x - 1 = 0; x = 1
answer
x = 1 and x =4

2)
x^2 -7x + 12 = 0
(x-3)(x-4) = 0
x - 3 = 0; x = 3
x - 4 = 0; x = 4
answer
x = 3 and x =4

3)
x^2 + 7x + 6 = 12x
x^2 - 5x + 6 = 0
(x - 3)(x - 2) = 0
x - 3 = 0; x = 3
x - 2 = 0; x = 2
answer
x = 3 and x = 2

4)
15 + 2x = x^2
x^2 - 2x - 15 = 0
(x - 5)(x+ 3) = 0
x - 5 = 0; x = 5
x + 3 = 0; x = -3
answer
x = -3 and x = 5

8 0

3 years ago

Help test show your work

olga55 [171]

A

Bye have a nice day

6 0

3 years ago

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Martha is 13 years old. She is 7 years younger than her brother, Paul.

Anna11 [10]

Answer:

20 years is the brother

Step-by-step explanation:

quick maths

6 0

2 years ago

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A new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds a

Ksenya-84 [330]

Answer:

The calculated value Z = 2.53 >1.96 at 0.05 level of significance

Null hypothesis H₀ is rejected

we accepted alternative hypothesis

we conclude that those joining Weight Reducers will lose greater than 10 pounds

Step-by-step explanation:

Step(i):-

Given the random sample size 'n' =50

Given data a new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds after the first two weeks. The standard deviation is 2.8 pounds.

The mean of the Population 'μ' = 10pounds

The standard deviation of the Population 'σ' = 2.8 pounds

Given mean of the sample 'x⁻' = 9

Level of significance ∝ = 0.05

Step(ii):-

Null hypothesis :H₀: μ<10

Alternative hypothesis: H₁: μ>10

The test statistic

$z= \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }$

$z= \frac{9 - 10}{\frac{2.8}{\sqrt{50} } } = \frac{-1}{0.395} = 2.53$

The calculated value Z = 2.53

The tabulated value Z = 1.96 at 0.05 level of significance

Step(iii):-

The calculated value Z = 2.53 >1.96 at 0.05 level of significance

Null hypothesis H₀ is rejected

we accepted alternative hypothesis

Conclusion:-

we conclude that those joining Weight Reducers will lose greater than 10 pounds

6 0

3 years ago

15. The temperature C, in degrees, that is equivalent to a temperature of F degrees Fahrenheit is given by graph of this equatio

7nadin3 [17]

Answer:

A. How can the equation be used in temperature conversion?

You take the conversion equation C = (5/9) (F - 32) and you replace the F by the value of Fahrenheit degrees... then solve the calculations to get the degrees in Celsius.

For example, if you have 80°F to convert in °C:

C = (5/9) (80 - 32) = (5/9) (48) = 26.66 °C

B. How can you use the graph to find the body temp in C?

Using the graph will give a very imprecise measure due the scale of the graph.

But you would have to find 98.6 on the axis of X (it represents the °F), then go upwards until you find the line....

Then report that position on the line on the Y-axis (representing the °C) to get your measure.

7 0

3 years ago

Read 2 more answers