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1 year ago

15

Now Ann is x years old and her sister is eight years younger than her. After five years , Anne's age is twice the age of her sis

ter.
Write down the ages of Anne and her sister after five years in terms of x.

Please help me friends

1 answer:

svp [43]1 year ago

7 0

Answer:

You can refer to the given attachment

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A pyramid has a volume of 180 cubic inches, a length of 9 inches, and a width of 5 inches.

beks73 [17]

Has a height of 12, because 12*9*5=180

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3 years ago

HELP! WILL GIVE BRANLIEST!

mars1129 [50]

Answer:

D

Step-by-step explanation:

This is your answer because first you have 3x10-6 and 2x1030 what you have to do is that first you multiply 3 x 2 equals to 6 then, 10 x 1 = 10 then you have to multiply 30 x 6 = 180 then you put it together and your answer is 6x10-180

Hope this helps :)

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3 years ago

The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (2008 data). The average c

ivanzaharov [21]

Answer:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

Step-by-step explanation:

Information given

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma= 500$ represent the population standard deviation

n represent the sample size

Solution to the problem

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =120 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The confidence2 level is 98% or 0.98 then the significance level would be $\alpha=1-0.98=0.02$ and $\alpha/2=0.01$ , the critical value for this case would be $z_{\alpha/2}=2.326$ , replacing into formula (b) we got:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

8 0

3 years ago

PLZ HELP I WILL MARK AS BRAINLIEST

-Dominant- [34]

Answer:

7 square units

Step-by-step explanation:

As with many geometry problems, there are several ways you can work this.

Label the lower left and lower right vertices of the rectangle points W and E, respectively. You can subtract the areas of triangles WSR and EQR from the area of trapezoid WSQE to find the area of triangle QRS.

The applicable formulas are ...

area of a trapezoid: A = (1/2)(b1 +b2)h

area of a triangle: A = (1/2)bh

So, our areas are ...

AQRS = AWSQE - AWSR - AEQR

= (1/2)(WS +EQ)WE -(1/2)(WS)(WR) -(1/2)(EQ)(ER)

Factoring out 1/2, we have ...

= (1/2)((2+5)·4 -2·2 -5·2)

= (1/2)(28 -4 -10) = 7 . . . . square units

4 0

3 years ago

ΔABC was dilated from point A to get ΔADE. Find the length of AD given a scale factor of 4.

rewona [7]

Since triangle ADE is similar to triangle ABC and the scale factor is 2, the following relation must be fulfilled:

$\frac{AD}{AB}=4$

The, by substituting the given information, we have

$\begin{gathered} \frac{6x-8}{x+2}=4 \\ \end{gathered}$

By multiplying both sides by x+2, we get

$6x-8=4(x+2)$

which gives

$6x-8=4x+8$

Then, by subtracting 4x to both sides, we have

$2x-8=8$

and by adding 8 to both sides, we obtain

$2x=16$

then, x is given by

$x=\frac{16}{2}=8$

Then, by substitutn

6 0

1 year ago