Intro to proportions in similar triangles Solve for x ,

Answer:

ans is 504m²

Step-by-step explanation:

given = side of square=18m

height of triangle=12m

formula= surface area of square + surface area of 4 triangles

surface area of square = 4 × length

= 4×18

=72m²

surface area of triangle = 1/2×base ×height

= 1/2×18×12 ( the base lies on the side of the squre so the base is also 18m)

= 108m²

therefore, surface area of 4 triangles = 4×108=432m²

therefore the surface area of the given figure= surface area of aquare + surface area of the 4 triangles

surface area of square= 72 +432

=504m²

Answer: Each friend ran 3.75 miles.

Step-by-step explanation:

Cecil and three friends is equal to 4 people. There are fifteen miles in the full relay. 15 divided by 4 is equal to 3.75.

15/4=3.75

So, the answer is each friend ran 3.75 miles.

Answer:

115%

Step-by-step explanation:

5 is completely irrelevant, Vertical angles are congruent.

Answer:

|-9| = 9

That is the absolute value for the loss of yards

Answer:

6turns

Step-by-step explanation:

Circumference= 1turn

Circumference=πd

22/7 × 49

=154cm

1turn =154cm

?=924cm

924÷154=6turns

Answer: b

Step-by-step explanation:

Answer:

Point J - Quadrant I

Point F - Quadrant II

Point P - Quadrant III

Point T - Y-axis

Step-by-step explanation:

Answer:

F: Quadrant II

J: Quadrant I

P: Quadrant III

T: y-axis

Step-by-step explanation:

Brainliest Please!!

Answer:

C. 1/3x + 2y = -2

Step-by-step explanation:

Using the point slope form of an equation

y-y0 = m(x-x0)

Get the slope m

Get the x and y intercept of the equation

Using the expression  1/3x + 2y = -2

x intercept occurs at y = 0

1/3x + 0 = 2

1/3 x = 2

x = 3 * 2

x = 6

y intercept occurs at x = 0

0+ 2y = 2

2y = -2

y = -1

Hence the required equation is C. 1/3x + 2y = -2

Answer:

x = -6

Step-by-step explanation:

We have the equation 3x - 4 = 2x - 10 and are asked to find "x".

To solve , we need to get "x" alone entirely.

3x - 4 = 2x - 10

Subtract 2x from both sides :

x - 4 = -10

Add 4 to both sides to get our answer :

x = -6

Answer:

the answer is equal to-6

Answer:

D. (2x-7)

Step-by-step explanation:

Split the equation into two equations by splitting -9x. Make sure that these can be factored further.

(2x² - 2x) + (-7x+7)

2x(x-1) -7(x-1)

create factors using GCFs (2x and -7) and the common factor (x-1)

(2x-7)(x-1)

D. (2x-7)

Answer:

Step-by-step explanation:

lateral surface area=(sum of sides)×height

Total surface area =2×base area +lateral area

Answer:

P' (-1,-4) N'(-5,0) U'(-2,1)

Step-by-step explanation:

Answer:

99.9%

Step-by-step explanation:

Answer:

3,384

Step-by-step explanation:

Answer:

3,384

Step-by-step explanation:

I need 1 Brainliest before I can become expert

Translation will reduce x coordinate by 2:  (0,4), (5,6) and (3,2)

Rotation 90 CCW will change (x,y) to (-y,x):  (-4,0),(-6,5),(-2,3)

Answer:

3

Step-by-step explanation:

Answer:

It's A=BH

Step-by-step explanation:

In the story the key words are there: Area, base/length, height

Answer:

It's A=BH

Step-by-step explanation:

Answer:

Step-by-step explanation:

Correct answer

Given that a, b, c, and d are different numbers (from 1 to 9), we are to find the largest possible value of a.b + c.d.

This problem can be answered by trial and error and with some logic. Clearly, a to d cannot be at the lower end of the values (1 to 5). Since the digits must be different, it can be a combination of digits from 6 to 9.

It is rather tempting to say that the 9.8 + 7.6 would yield the highest possible sum (=17.4) but this is incorrect. Since it is the sum of two numbers with a decimal, we have to maximize on the one-digit first before maximizing the tenths digit. Therefore: the combination of numbers must then be:

9.7 + 8.6 which results to 18.3

9.6 + 8.7 yields 18.3 as well.

Dollar replacement

For the value of the difference to be largest, the minuend should be maximum(most possibly) and the subtrahend should be minimum

[in A-B=X, A is minuend and B is subtrahend ]

So, $a.b should be the maximum. as there is a condition that 4 digits should be distinct, the product will be maximum if we choose 2 maximum valued numbers from the given numbers. so, one of them should be 9 and the other should be 8.

Therefore, $a.b=9*8=72

As mentioned above, c.d$ should be minimum. this will be possible only when we choose  2 minimum valued numbers from the given numbers. so, one of them should be 1 and the other should be 2.

Therefore, c.d$ = 1*2 = 2

Hence, the difference = 72-2 = 70

Thus,  the largest possible value of the difference $a.b - c.d$ = 70

Answer:

8.6

Step-by-step explanation:

The units digits matter most, so we make a as large as possible (a=9) and make c as small as possible (c=1). Then we can use any of the digits from 2 through 8. We still want b as large as possible and d as small as possible so we set b=8 and d=2. This gives a maximum possible difference of 9.8 - 1.2 = 8.6.

I hope this helped!

Answer:

8 < [tex]\sqrt{71}[/tex] < 9

Step-by-step explanation:

You need to find the perfect squares above and below 71

8*8= 64

9*9 =81

8 < [tex]\sqrt{71}[/tex] < 9

Answer:

The number is 20

Step-by-step explanation:

( x / 5 ) - 7 = -3

           +7    +7

————————

( x / 5)        = 4

     *5          *5

————————

x =               20

To Check;

20 / 5 = 4

4 - 7 = -3

Hope this helps!

Answer:

x = 8

Step-by-step explanation:

8x + 9 = 41 + 4x

4x = 32

x = 8

Answer:D

Step-by-step explanation:

Answer:

A. {0, 20, 40, 60, 80, 100, 120)

Step-by-step explanation:

:)

Answer:

The balancing point is 23

Step-by-step explanation:

Given

The above graph

Required

Determine the balancing point

This simply means that we calculate the mean.

From the above graph, we have:

[tex]\begin{array}{cc}x & {f} & {21} & {3} & {22} & {5} & {28} & {1} & {29} & {1}\ \end{array}[/tex]

So, the mean is:

[tex]\bar x = \frac{\sum fx}{\sum f}[/tex]

[tex]\bar x = \frac{21*3+22*5+28*1+29*1}{3+5+1+1}[/tex]

[tex]\bar x = \frac{230}{10}[/tex]

[tex]\bar x = 23[/tex]

Hence, the balancing point is 23

Answer:

7x

Step-by-step explanation:

7x(5x-7)

brainliest pls!

Answer:

7x

Step-by-step explanation:

Answer: amplitude and period are two different things. The amplitude is -1/3, and the period is 360 degrees.

Step-by-step explanation: to find the amplitude, you just look at what number is in front of sin. If there isn't one, an amplitude of 1 is implied (in this case. Keep in mind that different functions have different standards).

To find the period, you take term b (which is what comes after sin). In this case, b is 1 because there's no specific number there. Again, it's implied. Because this is sin and not tan, for example, you take 360/b=period. 360/1=360 degrees.

Answer:

A. The length is 1.5 inches and the width is 1 inch.

Step-by-step explanation:

If we assume the two scale factors are related, then 1:10 is half of 1:20, so half of 3:2 is 1.5:1.

Answer:

Step-by-step explanation:

The two points are (-6,8) and (8,0)

we can find the distance thanks to this formula

√(x1-x2)^2 + (y1-y2)^2 where x and y indicate the coordinates of the two points

√(-6-8)^2 + (8)^2 = √196 + 64 = √260 ≃ 16,12

Answer:

C

Step-by-step explanation:

7.67 is greater than 7.66666...