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3 years ago

Whats the area of the triangles please help

Mathematics

1 answer:

ANTONII [103]3 years ago

4 0

The answer is To calculate the area of a triangle, multiply the height by the width (this is also known as the 'base') then divide by 2. The area is 20cm². ... A triangle is always half the area of a rectangle with the same height and width.

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Ik this sounds dumb and it's very late so I don't want to do the math 600 Seconds is ___ hours what I'm asking is 600 seconds eq

fomenos

600 seconds would be 10 minutes, as there are 60 seconds in a minute.

Expressed as hours, that would be 1/6 of an hour.

6 0

3 years ago

Read 2 more answers

What is the system of equations for 2x + 2y = 10 and 5x - 2y=4?

vagabundo [1.1K]

$2x + 2y = 10 \\ 5x - 2y = 4 \\ 7x = 14 \\ x = 2 \\ \\ 2(2) + 2y = 10 \\ 4 + 2y = 10 \\ 2y = 6 \\ y = 3$
(2,3)

8 0

2 years ago

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Seraphina picked 120 strawberries in six hours. At this rate, how many strawberries did Seraphina pick in 4 hours?

Lyrx [107]

Answer:

80 Strawberries

Step-by-step explanation:

If she picked 120 strawberries in 6 hours

Then in 1hour she picked 120/6 = 20 strawberries

Then in 4 hours she picked 20×4 = 80 strawberries

8 0

3 years ago

The sum of 7 times one number, x, and 4 times a second number, y, is 148. If the sum of the two numbers is 31, find the two numb

Andreas93 [3]

Answer:21.88

Step-by-step explanation:

6 0

3 years ago

The Genetics & IVF Institute conducted a clinical trial of the YSORT method designed to increase the probability of conceivi

Reika [66]

Answer: The test statistic needed to test this claim= 10.92

Step-by-step explanation:

We know that the probability of giving birth to a boy : p= 0.5

i..e The population proportion of giving birth to a boy = 0.5

As per given , we have

Null hypothesis : $H_0: p\leq0.5$

Alternative hypothesis : $H_a: p>0.5$

Since $H_a$ is right-tailed , so the hypothesis test is a right-tailed z-test.

Also, it is given that , the sample size : n= 291

Sample proportion: $\hat{p}=\dfrac{239}{291}\approx0.82$

Test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$ , where n is sample size , $\hat{p}$ is sample proportion and p is the population proportion.

$\Rightarrow\ z=\dfrac{0.82-0.5}{\sqrt{\dfrac{0.5(1-0.5)}{291}}}\approx10.92$

i.e. the test statistic needed to test this claim= 10.92

Critical value ( one-tailed) for 0.01 significance level = $z_{0.01}=2.326$

Decision : Since Test statistic value (10.92)> Critical value (2.326), so we reject the null hypothesis .

[When test statistic value is greater than the critical value , then we reject the null hypothesis.]

Thus , we concluded that we have enough evidence at 0.01 significance level to support the claim that the YSORT method is effective in increasing the likelihood that a baby will be a boy.

7 0

3 years ago