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4 years ago

Add I to 10000,

Mathematics

1 answer:

Arturiano [62]4 years ago

4 0

Well then let's try and find the pattern!

When we add 1 through 10, we can also say that we're adding all of these values together:

1 + 10 = 11

2 + 9 = 11

3 + 8 = 11

4 + 7 = 11

5 + 6 = 11

So we can also say that this is like multiplying 11 * 5 = 55

If we add up to 100, we can see that it's like multiplying 101 * 50 = 5050

From this, we can get an equation:

(x + 1) * (x/2)

So let's plug in 10000 into this equation:

(x + 1) * (x/2)

(10000 + 1) * (10000/2)

10001 * 5000 = 50005000

Answer:

C 50005000

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For the polynomial below, -2 is a zero.

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

please note -2 is not a zero ,it should be 2 is a zero.

by synthetic division

2| 1 4 -10 -4

| 2 12 4

|----------------

1 6 2 | 0

x²+6x+2=0

$x=\frac{-6 \pm \sqrt{36-8} }{2} \\or~x=\frac{-6 \pm2\sqrt{7} }{2} \\or ~x=-3\pm \sqrt{7} \\h(x)=(x-2)(x^2+6x+2)=(x-2)(x-3+\sqrt{7} )(x-3-\sqrt{7})$

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3 years ago

Mrs. Aguirre is going to plant a rectangular garden in her rectangular backyard, as

pantera1 [17]

Answer:

The answer is below

Step-by-step explanation:

From the image attached we can see that the width of the garden is 6 ft. The length of the garden is the slanting side of the triangle (hypotenuse).

Let x be the length of the garden. The height of the triangle = 40 ft - 15 ft = 25 ft.

The base of the triangle = 80 ft - 75 ft = 5 ft.

The length of the garden is gotten using Pythagoras:

x² = 25² + 5²

x² = 650

x = 25.5 ft.

The area of the garden = length * width = 25.5 * 6 = 153 ft²

Hence the approximate area = 160 ft²

4 0

3 years ago

Can someone help me please

ahrayia [7]

Answer:

hieght at left is 24+1

and right is 25 both are equal now so h=25

base=8

area of triangle 1/2×b×h

1/2×8×25=100

7 0

3 years ago

Read 2 more answers

You are trying to estimate the average amount a family spends on food during a year. In the past the standard deviation of the a

svetoff [14.1K]

Answer:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

Step-by-step explanation:

We have the following info:

$ME = 50$ margin of error desired

$\sigma = 1000$ the standard deviation for this case

The margin of error is given by this formula:

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

And on this case we have that ME =50 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 critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is $\alpha=0.01$ . And for this case would be $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

5 0

3 years ago

In the diagram below, line segment bc is an altitude of triangle abd. To the nearest whole unit what is the length of cd.

Georgia [21]

Answer:

A. 23

Step-by-step explanation:

All of the right triangles are similar, so we can write the proportion ...

(short leg)/(long leg) = CD/CB = CB/CA

CD = CB²/CA = 32²/44 ≈ 23 3/11

The length of CD is about 23 units.

3 0

4 years ago