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4 years ago

12

Please help me!!

2 answers:

KIM [24]4 years ago

5 0

I'm not sure about 2-3 but I am gonna say that 1 is (a) because of the gaps in the numbers and the gaps in the points on the graph.
the gap in 1st and 2nd numbers is a pretty big gap 2nd and 3rd gap not so big but 3rd and 4th again pretty good gap

uysha [10]4 years ago

4 0

1. A, the first option. B seems like it would be correct, but it's too neat. Look at how the numbers jump on the table, 61 to 125 would be a sharp rise.

2. Yes, it's continuously going down by 12!

3. D, the last option!

Hope that helps!

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At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. T

OLEGan [10]

Answer:

$\text{Exact area of the sidewalk}=40 \pi\text{ m}^2$

$\text{Approximate area of the sidewalk}=125.6\text{ m}^2$

Step-by-step explanation:

We have been given that at a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m.

To find the area of the side walk we will subtract the area of inner edge of the side walk of lion pen from the area of the outer edge of the lion pen.

$\text{Area of circle}=\pi r^2$ , where r represents radius of the circle.

$\text{Exact area of the sidewalk}=\pi*\text{(11 m)}^2-\pi*\text{(9 m)}^2$

$\text{Exact area of the sidewalk}=\pi*\text{121 m}^2-\pi*\text{81 m}^2$

$\text{Exact area of the sidewalk}=40 \pi\text{ m}^2$

Therefore, the exact area of the side walk is $40 \pi\text{ m}^2$

To find the approximate area of side walk let us substitute pi equals 3.14.

$\text{Approximate area of the sidewalk}=40*3.14\text{ m}^2$

$\text{Approximate area of the sidewalk}=125.6\text{ m}^2$

Therefore, the approximate area of the side walk is $125.6\text{ m}^2$ .

4 0

3 years ago

serg [7]

Answer:

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Step-by-step explanation:

7 0

3 years ago

Given the figure as marked, find the perimeter and area.

Kazeer [188]

Answer:

Step-by-step explanation:

Left triangle: it has two congruent legs because has an angle of 45 degrees

AB = $\sqrt{ 2 * 6^2} = 6\sqrt{2}$ cm

the triangle on the the right is half on an equilateral one

BC = 12 cm

CH = 6√3 cm

AC= (6 + 6√3) cm

2p = 6 + 6√3 + 12 + 6√2 = 18 + 6√3 + 6√2 = 6(3 + √3 + √2) cm

Area = [6(1+√3) * 6]/2 = 18(1+√3) cm^2

6 0

3 years ago

One number is 32 less.than another. If the sum of the two numbers is 94 , find the two numbers.

Ratling [72]

Answer:

let the number be x, so that the two numbers are x and x - 32 The first number is x = 62.

The second number is x - 32 = 62 - 32 = 30.

Step-by-step explanation:

x + x - 32 = 92

or, 2x = 92 + 32

or, 2x = 124

or, x = 124/2 = 62

6 0

4 years ago

Alvin has $760 less invested in 7% than he has at 5%. If his annual income from these two investments is $51.20, how much does h

kondor19780726 [428]

Answer:

Alvin invested $110 at rate of 7% and invested $870 at rate of 5%

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem

Let

x------> the amount of money invested at rate of 5%

At rate of 7%

we have

$t=1\ years\\ P=(x-\$760)\\r=0.07$

At rate of 5%

we have

$t=1\ years\\ P=x\\r=0.05$

substitute in the formula

$51.20=(x-760)(0.07*1)+(x)(0.05*1)$

$51.20=0.07x-53.2+0.05x$

$51.20+53.2=0.12x$

$x=104.4/0.12=\$870$

therefore

Alvin invested ($870-$760)=$110 at rate of 7%

Alvin invested $870 at rate of 5%

8 0

3 years ago