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4 years ago

PLEASE HELP All of the following expressions are equal except ____

Mathematics

1 answer:

KengaRu [80]4 years ago

8 0

Answer:

Are they counting negatives?

Step-by-step explanation:

Are they counting negatives as equal? Because it is either a or d

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The lengths of a triangle are in the extended ratio 6:7:9. The perimeter of the triangle is 88 cm. What are the lengths of the s

hoa [83]

Answer:

24cm, 28cm, 36cm

Step-by-step explanation:

Since the sides have a ratio of 6:7:9 we can connect them to the variable of x and find the sum of the sides for the perimeter:

P = 6x + 7x + 9x = 88

Combine like terms: 22x = 88

Divide by 22 on both sides: 22x/22 = 88/22

Solve for x: x = 4

6x = 6(4) = 24cm

7x = 7(4) = 28cm

9x = 9(4) = 36 cm

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3 years ago

This symbol > means that one number is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ or equal to another number.

stellarik [79]

Answer:

gratr

Step-by-step explanation:

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3 years ago

If anils hieght was 150cm and amans height was 100cm then the ratio of their heights would be

Nataly [62]

Answer:

3/2 or 150%

Step-by-step explanation:

150:100 = 150/100 = 15/10 = 3/2

In other words, 150%

8 0

3 years ago

Which type of variation is modeled in the table? joint combined direct Inverse

alexandr1967 [171]

Answer: inverse

Step-by-step explanation: inverse is the relationship between the variables in the table a direct variation.

6 0

3 years ago

Earth revolves around the Sun in 365 days, but the planet Mercury does so in only 88 days. Compared to Earth, how many more comp

Elena L [17]

Answer:

In a 1000 days Mercury will make 8.624 more revolutions than Earth!

Step-by-step explanation:

Earth takes 365 days to make a complete revolution.

we can say that the rotational speed of Earth is $\dfrac{1}{365}\frac{\text{rev}}{\text{day}}$

so, in a 1000 days how many revolutions will Earth have made?

$\dfrac{1}{365}\frac{\text{rev}}{\text{day}}\times(1000\,\text{day})$

see that the 'day's cancel out. Simply multiply the two numbers!

$2.739\text{rev}$

Next, do the same for Mercury

we can say that the rotational speed of Mercury is $\dfrac{1}{88}\frac{\text{rev}}{\text{day}}$

as it completes 1 revolution in 88 days.

so, in a 1000 days how many revolutions will Mercury have made?

$\dfrac{1}{88}\frac{\text{rev}}{\text{day}}\times(1000\,\text{day})$

multiplying by 1/88 by 1000 yields:

$11.363\text{rev}$

The Question is how many MORE complete revolutions will Mercury make in 1000 days?

We need to subtract the revolutions of Mercury with Earth to find how far ahead is Mercury from Earth

$11.363\text{rev} - 2.739\text{rev}$

$8.624\text{rev}$

In a 1000 days Mercury will make 8.624 more revolutions than Earth!

5 0

3 years ago