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3 years ago

If QR is 7 less than twice X, RS is 61 less than 5 times x, and QS is 11 more than x, find X and the measure of each side.

Mathematics

1 answer:

poizon [28]3 years ago

4 0

Answer:

We can't find the answer unless there's the total amount of circumstances.

Step-by-step explanation:

QR= 2x-7

RS= x-61

QS= x+11

2x+7+x-61+x+11

? = 4x-43

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Estimate 45,580-12,363 to the nearest thousands

Mandarinka [93]

Answer:

33,000

Step-by-step explanation:

3 0

3 years ago

Can you estimate 7533

Oduvanchick [21]

Based on your comment I assume you want to find 7,533 subtracted by 7,200. To estimate this, round 7,533 to the hundreds place, so 7,533 becomes 7,500.

7,500 - 7,200 = 300, using mental math.

7 0

3 years ago

What’s the inverse of f(x) = -2 + 2/3x

saveliy_v [14]

So the steps to find the inverse are:

Change f(x) to y
Switch the positions of x and y
Solve for y
Change y to f^-1(x)

$f(x)=-2+ \frac{2}{3}x\\\\y=-2+ \frac{2}{3}x\\\\x=-2+ \frac{2}{3}y$

Now let's solve for y as such:

$x=-2+ \frac{2}{3}y \\\\x+2=\frac{2}{3}y\\\\\frac{3}{2} (x+2)=y\\\\\frac{3}{2}x+3=y\\\\\frac{3}{2}x+3=f^{-1}(x)$

Your inverse is f^-1(x) = 3/2x + 3

8 0

2 years ago

Males have red blood cell counts with a mean of 4.719 and a standard deviation of .490, while females have red blood cell counts

iVinArrow [24]

Answer:

The female has a higher count relative to the sample of females than the male relative to the sample of males.

Explanation:

When you want to compare the means of two samples with different statistics you may use the z-score.

The z-score measures how far a value (data point) is from the mean, in terms of the standard deviation.

The z-score is calculated as:

$z-score=(x-\mu )}/\sigma$

Where:

$x=\text{value of the data}\\\\\mu =mean\\\\\sigma = \text{standard deviation}$

1. Male with a count of 5.58

$z-score=(5.58-4.719)/0.490=1.757$

2. Female with a count of 5.23

$z-score=(5.23-4.349)/0.402=2.192$

Therefor, the z-score of the female is greater than the z-score of the male.

The greater z-score means that, relative to her group, the female has a higher count than the male.

7 0

3 years ago

Are the expressions below equivalent? 3(4x + 8) 12x + 24

pantera1 [17]

Answer:

they are both equal 12x+8 is equal to 12x+24

Step-by-step explanation:

distribute:

3 x 4x = 12x 3 x 4 = 24

3 0

3 years ago