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Mathematics Middle School

What the expression (4f-3+2g)-(4g+2)

What the expression (4f-3+2g)-(4g+2)

2 months ago

Solution 1

Guest

Guest #1831

2 months ago

For this question you can say:
4f -3 +2g - 4g -2
so now you can simplify and find the answer:
4f -3 -2g -2 = 4f -2g -5
and that's the answer :)))
I hope this is helpful
have a nice day

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A car is traveling at a speed of 75 km/h. Identify the correct conversion factor setup required to compute the speed of the car in m/s. A) 75km 1hr x 1000m 1km x 1hr 60min x 60s 1min B) 75km 1hr x 1000m 1km x 1hr 60min x 1min 60s C) 75km 1hr x 1000m 75km x 1hr 60min x 1min 60s D) 75km 1hr x 1000m 75km x 1hr 60min x 60s 1min

Solution 1

Therefore, the speed of the car in m/s is $\frac{75000}{3600}$ m/s i.e., option (B) is correct.

What is the equation?

The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Here given that,

A car is traveling at a speed of $75$ km/h.

As we know,

$1km=1000m$

$1h=60s$

So,

$75$ km/h= $\frac{75(1000)}{3600}$ m/s

$=\frac{75000}{3600}\\\\$

Hence, the speed of the car in m/s is $\frac{75000}{3600}$ m/s i.e., option (B) is correct.

To know more about the equation

brainly.com/question/12788590

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Solution 2

I think the answer is B

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Is 8 yd greater than 288 in.

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3 feet is equal to 1 yard and 3 feet is 36 inches. 288 inches divided by 36 is 8 so 8 yards is equal to 288 inches.

Solution 2

I believe they are the same since one yard is 36 in, so 8x36 is 288. Hope i helped :)

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So I have a question, this : Insert 2 grouping symbols to make the equation true 100 + 4 * 6 + 3 - 27 / 9 - 6 = 127 Where do I put the grouping symbols?

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Simplify and factories 16g + 32h - 48g - 40h

Solution 1

For this question you can say:
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and 32h - 40h = -8h
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i hope this is helpful
have a nice day

Question

Find the value of sin2a, if tana=-12/5 in the fourth quadrant

Solution 1

$\tan a=-\dfrac{12}5$

Recall the following identities:

$1+\tan^2a=\sec^2a=\dfrac1{\cos^2a}$
$\cos^2a=\dfrac{1+\cos2a}a$

from which we get

$1+\left(-\dfrac{12}5\right)^2=\dfrac1{\cos^2a}$
$\implies\cos^2a=\dfrac{25}{169}$

Since $a$ is in the fourth quadrant $\left(\dfrac{3\pi}2$ we know that $\cos a$ should be positive, so when we take the square root here, we should take the positive root.

$\implies\cos a=\sqrt{\dfrac{25}{169}}=\dfrac5{13}$

Now recall that

$\cos^2a+\sin^2a=1$

and since $a$ is in the fourth quadrant, we expect $\sin a$ to be negative. So,

$\sin^2a=1-\cos^2a=\dfrac{144}{169}\implies\sin a=-\sqrt{\dfrac{144}{169}}=-\dfrac{12}{13}$

One final identity:

$\sin2a=2\sin a\cos a$

from which we get

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Just divide 100% by 80% and multiply that answer by 5. I'm pretty sure that's how you do it.

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Solution 1

89+6
x - y
^ - ^
3 - 9 I think that's the answer I'm not too sure because you didn't provide me your answer but hope this helps .

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The Mulraney's home has 2,550 square feet of living space. A contractor is building an addition to their home that will increase the square footage by 8%. What will be the square footage of their home with the addition?

Solution 1

First we have to find out how much the Mulraney's square footage increases with the addition. To do this, we should multiply the percent of expansion, 8% (0.08) by their current square footage (2, 550)

0.08 * 2,550 = 204

This means that the addition is adding 204 square feet to the Mulraney's house.

To find the total number of square footage, we just add the original (2,550 feet) to the addition (204).

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Answer: X + 12

Reason/Explanation:
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-DustinBR

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The other factor is 4 because if you multiply a negative with a positive, you'll get a negative. -6 * 4 will give you - 24.

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