Find the value of the expression for x^2 + 2y when x=5, y=8​

Answer:

16m²

Just find the volume by multiplying the length, width, and height

Step-by-step explanation:

Answer:

a)1017.88 cm³

b)63.62 cm² (corr. to 2 d. p.)

c)452.39 cm²  (corr. to 2 d. p.)

d)579.63 cm²

Step-by-step explanation:

a) Volume = π x r x h = π x (9/2) x 16 = 1017.88 cm³

b) area of tin is used = circle = π x (9/2)² = 63.62 cm² (corr. to 2 d. p.)

c) area of cardboard is used = 2 x π x (9/2) x 16 = 452.39 cm²  (corr. to 2 d. p.)

d) total area surface = 2(63.62) + 452.39 = 579.63 cm²

Answer:

the angle in degree is 30°

If the measure of the angle in radian form is 7π/6 then it is 210° in degrees form.

An angle is basically an inclination of surface towards a object. It is measured in degrees as well as in radian.

We have been that the angle is 7π/6 and we have to convert this angle into degrees.

We have to just put π=180 to convert the radian form into degrees.

Angle=7*180/6

=7*30

=210°

Hence if the measure of the angle in radian form is 7π/6 then it is 210° in degrees form.

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Answer:

x = 4

Step-by-step explanation:

The image provided below, I find very helpful when trying to solve difficult problems such as this one.

We use the same relationship, the only difference is we are given expressions and numbers for the segments

If the product of the segments in one chord equal the product of the segments in the other chord then,

x * 6 = 8 * ( x - 1 )

Or 6x = 8 ( x - 1 )

Now we solve for

Step 1 distribute the 8

8 * x = 8x

8 * -1 = -8

We now have 6x = 8x - 8

step 2 subtract 8x from each side

6x - 8x = -2x

8x - 8x cancels out

we now have -2x = -8

step 3 divide each side by -2

-2x / -2 = x

-8 / - 2 = -4

we're left with x = 4

Answer: 24 m squared

Step-by-step explanation:

Lets break this down step by step. When you see an irregular polygon and want to find the area, you can break it down into smaller shapes.

I have split the shape into a parallelogram and a rectangle.

Area of parallelogram : 6*2 (formula  = bh)

Area of rectangle: 6*2 (formula = bh)

Now we add the areas of both the parallelogram and rectangle together to get 24m squared.

Answer:

24 m²

Step-by-step explanation:

2 + 2 = 4

4 × 6 = 24

24 m²

Answer:

13x 5y

Step-by-step explanation:

Answer:

Mean: 6

Median: 6

Mode: 8

Range: 5

Step-by-step explanation:

Mean: is the sum of all numbers divided by the amount of numbers.

Median: the middle number.

Mode: the number that is often being occurred.

Range: the difference between the beginning number and the ending number.

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Mean: 7 + 3 + 5 + 6 + 4 + 8 + 4 + 7 + 8 + 8 = 60 divided by 10 equals 6.

Median: 7, 3, 5, 6, 4, 8, 4, 7, 8, 8. The median is between those numbers so we're going to identify the number between 4 and 8. well obviously is 6 but if you want to do some math then add the two medians and then divided by two.

Mode: 7,3,5,6,4,8,4,7,8,8. The mode in this case is 8 because it is being used the most out of all of the other numbers.

Range: 7, 3, 5, 6, 4, 8, 4, 7, 8, 8. the range is 5 (in this case) because it is the difference between the largest number and the smallest number.

Answer:

x= 3

y= 31

Step-by-step explanation:

4y + 21 = 145

subtract 21 from both sides

4y = 124

divide both sides by 4

y = 31

3x + 26 = 35

subtract 26 from both sides

3x = 9

divide both sides by 3

x = 3

hope this helps :)

Answer:

m1 = 62.5

m2 = 62.5

m3 = 55°

m4 = 75°

m5 = 50°

Step-by-step explanation:

m1: Sides 1 and 2 are congruent so angle will be the exact same as m2:

180° - 55° = 125 | 125 / 2 = 62.5°

m2: same as m1; 62.5°

m3: equivalent to 55° due to its location

m4: angle of a line is 180° so 180° - 105° = 75°

m5: angles of triangle add to 180° so 180° - (75° + 55°) = 50°

Answer:

ten millions

Step-by-step explanation:

Answer:

See expanation below

Step-by-step explanation:

Fried: 16/50 = 32%

Boneless: 10/50 = 20%

Baked: 6/50 = 12%

Buffalo: 18/50 = 36%

Answer:

fx - gx is

3x + 2 -2x -4

x -2

because add the like terms

-4 and 2

-2

3x and -2x

x

x = -2 so A

Step-by-step explanation:

Answer:

15 times

Step-by-step explanation:

6 green erasers / 20 total erasers =0.3

0.3(50) = 15

The number of times a green eraser will be drawn will be 15 times.

The expected value is given below.

E(x) = np

Where n is the number of samples and p is the probability.

A bowl contains 3 red erasers, 4 blue erasers, 6 green erasers, and 7 erasers.

The probability of getting a green eraser will be calculated as,

P = 6 / (3 + 4 + 6 + 7)

P = 6 / 20

P = 0.30

Then the expected value is calculated as,

E = 0.30 x 50

E = 15

The number of times a green eraser will be drawn will be 15 times.

More about the expected value link is given below.

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Answer:

7x + 33

Step-by-step explanation:

Distribute the multiplication in the last term:  5(x + 6) becomes 5x + 30.  Then,  2x + 3 + 5(x+ 6) becomes 2x + 3 + 5x + 30.  2x and 5x are 'like terms' and add up to 7x; 3 and 30 are also like terms of a different type (constants) and add up to 33.  

Thus we have the equivalent, simpler expression 7x + 33.

Answer:

Exact Form:

7/2

Decimal Form:

3.5

Mixed Number Form:

3 (1/2)

I hope this helps! :)

Answer:

26.3 m

Step-by-step explanation:

The length of a shadow of a building is 26 m. The distance from the top of the building to the tip of the shadow is 37 m. Find the height of the building.

We solve the above question using Pythagoras theorem

c² = a² + b²

Where

c = Longest part of the triangle = 37 m

a = Height of the triangle = ?

b = Length of the shadow = 26 m

Hence:

37² = a² + 26²

a² = 37² - 26²

a = √37² - 26²

a = √(693)

a = 26.324893162m

Approximately = 26.3 m

Answer:

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.

Answer:

All you have to do is just add the numbers inside the parenthesis. (4+-2) is the same as 4-2 which is equal to 2. (4+-6) is the same as 4-6 which is equal to -2.

Step-by-step explanation:

If this has helped please mark as brainliest

Answer:

Step-by-step explaination

-2 + 4 is 2 4+ -6 is -2

Answer:

the paper need to be 16 inches

Answer:

answer: 510 square feet

Answer:

f(x)= -3x² - 12x - 5

Step-by-step explanation:

-3(x+2)² + 7

-3(x+2)(x+2) + 7

(-3x-6)(x+2) + 7

-3x² - 6x - 6x - 12 + 7

-3x² - 12x - 5

Step-by-step :

-9-(-1)

-9+1=-8

Answer: y = 5.25x

Step-by-step explanation:

The cost of one pound of cheddar cheese is $5.25.

The number of cheese purchased is x.

The total cost of cheese would therefore be the cost of one pound of cheese multiplied by the number of pounds of cheese purchased:

= 5.25 * x

Full expression is therefore:

y = 5.25 * x

y = 5.25x

Answer: A. 0,0

Step-by-step explanation:

edge2021

Answer:

A)

Step-by-step explanation:

got it right on edge :) good luck!

vv I've attached the image of the question below so you can be sure

Answer:

These methods convert everything to radians

Step-by-step explanation:

Length of arc DC fromula is radius*angle in radians

Radius of the circle of DC is 8 cm aka the outer circle.

The angle inside is 130 degrees, in radians convert and multiply by 180/[tex]\pi[/tex]

givong 130 degrees to be 13/18π

using formula, arc DC is 8*13/18π

=52/9π (in terms of pi) or 18.15 cm

or 130/360*(2π8)=18.15 (not using radians)

Length of arc QT regards the inner circle of radius 4 cm. Convert 130 degrees to radians. Using same formula as above, length of arc =4*13/18π

=26/9π or 9.08 cm

or 130/360*(2π4)=9.08 (not using radians)

Area of sector DEC suspended angle is 130 degrees of 13/18π radians. regarding large outer circle radius 8 cm.

Use formula 0.5*r^2*angle in radians fro area of sector gives:

0.5*8^2*13/18π

=208/9π or 72.61 cm^2

or 130/360*(π8^2)=72.61 (not using radians)

The area of sector QET angle 13/18πv rad and radius 4 cm using same forumla as above gives

0.5*13/18π*4^2

=52/9π or 18.15cm^2

or 130/360*(π4^2)=18.15 (not using radians)

Radian measure of angle DEC is 130 degrees again convert to radians by multiplying by π/180 gives

=13/18π

Radian measure of angle QET IS ALSO 130 degrees also

=13/18π

Answer:

25%

Step-by-step explanation:

Percentage change is the difference between the new price and the old price, divided by the old price.  Finally, multiply by 100 to convert the decimal answer to percent.

Difference in prices (new - old):  95 - 76 = 19

Divide by old price:  19/76 = .25

Multiply by 100%:  .25 x 100 = 25%

Answer:

C i think

Step-by-step explanation: