. The area of a square is 80 square meters. Which best represents the length of one
side of the square?
a. 7.8 m
C. 8.5 m
b. 7.1 m
d. 8.9 m

HELP ME PLS

Answer:

- 3

Step-by-step explanation:

2x - 9 = 5x

- 9 = 5x - 2x

-9 = 3x

-9/3 = x

x = -3

Answer:

62

Step-by-step explanation:

you make the largest and smallest 2 digit numbers which are 24 and 68. then you find the difference which gives you 62

Answer:

1 and 1/12

Step-by-step explanation:

1/3 + 3/4 = 1 and 1/12

Answer:

Ray EA & Ray EC

(last one)

Step-by-step explanation:

Opposite rays make a 180 degree line.

For naming it, always start with the endpoint and then to the arrow.

Answer:

7

Step-by-step explanation:

Since √100 is equal to 10 and √9 is equal to 3, we get 10 - 3 which equals 7.

Answer:

y=10x-14

Step-by-step explanation:

From (4,1) on a graph, you would rise ten and then run to the left 14 times. Remember the rise/run and follow it. What I'm telling is rise you reach (4,6), then count across to (-3,6) to get your answer. You can use demos graphing calculator to help you better or make your own graph.

I hope this helped you! Comment below if you are confused or send a private message. ;)

Answer:

100

Step-by-step explanation:

we first find the area of the rectangle:

8*10=80

now we find the area of the triangle:

(6*8)/2=24

Now we add the area of the triangle and the rectangle up:

24+80=104

Now we round that up to the nearest ten:

100

Answer:

l=4

Step-by-step explanation:

l=A

w=8

2=4

Answer:

I think 3 $

Step-by-step explanation:

Ans; 9÷3=3 , 18÷6=3 ,....

I hope I helped you^_^

Answer:

the answer would be x = 3

Step-by-step explanation:

since the 2 sides (5 and 2) have to be grater than x 3 would be the only possible answer because 29 is too large and 29 squared is 5.385164807134504

[tex] \hookrightarrow \: {y}^{2} + 14y - 5x + 64 = 0[/tex]

[tex] \hookrightarrow \: 5x = {y }^{2} + 14y + 64[/tex]

[tex] \hookrightarrow \: 5x = {y}^{2} + 14y + 49 + 15[/tex]

[tex] \hookrightarrow \: 5x = (y + 7) {}^{2} + 15[/tex]

[tex] \hookrightarrow \: x = \dfrac{(y + 7) {}^{2} + 15 }{5} [/tex]

[tex] \hookrightarrow \: x = \dfrac{1}{5} (y + 7) {}^{2} + 3[/tex]

therefore, the correct option is B

Answer:

x = (1/5)(y + 7)² + 3

Step-by-step explanation:

Given that,

→ y² + 14y - 5x + 64 = 0

Let's find the required solution,

→ y² + 14y - 5x + 64 = 0

→ 5x = y² + 14y + 64

→ 5x = y² +14y +49 + 15

→ 5x = (y + 7)² + 15

→ x = [(y + 7)² + 15]/5

→ [x = (1/5)(y + 7)² + 3]

Hence, it is the correct answer.

Solve for x first.

5x - 9 + 2x + 10 = 78

7x + 1 = 78

7x = 78 - 1

7x = 77/7

x = 11

Then substitute the value of x to find DE.

DE = 5x - 9

5(11) - 9

55 - 9

DE = 46

Therefore, the value of DE is 46

DF= 78, DE = 5x -9, EF = 2x + 10, find DE.

First, solve for the value of x.

Then, plug and substitute the value of x to find the DE.

Answer:

please give my answer first

Answer:

408 is correct

0.8 x 510 = 408

Step-by-step explanation:

When we get a sale value or reduced value to find

This is a short cut of workings in bold to find correct value.

10% of 510 = 51

20% of 510 = 102

510-102 =408

17 x 30 = 510   Not correct as calculated before taxes.

100-80/ 100 = 0.8

0.8 x 510 = 408

408/510 = 0.8  Is correct

0(17) (30) = 510   Not correct as calculated before tax

510 - 2(17)(30) = 510 i Not correct as calculated before tax.

Answer:Complementary angles are two angles whose sum is 90 degrees.

Let x represent one of the angles.

The other angle which is 84.2 degrees less would be x - 84.2.

Using this, we can write an equation.

x + (x-84.2) = 90.

Combine like terms:   2x - 84.2 = 90

Add 84.2 to both sides of the equation.

2x = 174.2

Divide by 2:  x = 87.1  

and x - 84.2 would equal 2.9.       to check: does  87.1 + 2.9 = 90?  yes.

Step-by-step explanation: Thats as close as its gonna it i think

Answer:

The dimensions that minimize the cost of materials for the cylinders have radii of about 3.628 cm and heights of about 7.256 cm.

Step-by-step explanation:

A cylindrical can holds 300 cubic centimeters, and we want to find the dimensions that minimize the cost for materials: that is, the dimensions that minimize the surface area.

Recall that the volume for a cylinder is given by:

[tex]\displaystyle V = \pi r^2h[/tex]

Substitute:

[tex]\displaystyle (300) = \pi r^2 h[/tex]

Solve for h:

[tex]\displaystyle \frac{300}{\pi r^2} = h[/tex]

Recall that the surface area of a cylinder is given by:

[tex]\displaystyle A = 2\pi r^2 + 2\pi rh[/tex]

We want to minimize this equation. To do so, we can find its critical points, since extrema (minima and maxima) occur at critical points.

First, substitute for h.

[tex]\displaystyle \begin{aligned} A &= 2\pi r^2 + 2\pi r\left(\frac{300}{\pi r^2}\right) \\ \\ &=2\pi r^2 + \frac{600}{ r} \end{aligned}[/tex]

Find its derivative:

[tex]\displaystyle A' = 4\pi r - \frac{600}{r^2}[/tex]

Solve for its zero(s):

[tex]\displaystyle \begin{aligned} (0) &= 4\pi r - \frac{600}{r^2} \\ \\ 4\pi r - \frac{600}{r^2} &= 0 \\ \\ 4\pi r^3 - 600 &= 0 \\ \\ \pi r^3 &= 150 \\ \\ r &= \sqrt[3]{\frac{150}{\pi}} \approx 3.628\text{ cm}\end{aligned}[/tex]

Hence, the radius that minimizes the surface area will be about 3.628 centimeters.

Then the height will be:

[tex]\displaystyle \begin{aligned} h&= \frac{300}{\pi\left( \sqrt[3]{\dfrac{150}{\pi}}\right)^2} \\ \\ &= \frac{60}{\pi \sqrt[3]{\dfrac{180}{\pi^2}}}\approx 7.25 6\text{ cm} \end{aligned}[/tex]

In conclusion, the dimensions that minimize the cost of materials for the cylinders have radii of about 3.628 cm and heights of about 7.256 cm.

Answer:

x = pp12 or 12 pp

Step-by-step explanation:

Just to note that pp means p square

Answer: Hello There!................

x=-3.5

Step-by-step explanation:

Mark me brainest please. Hope this helps. Anna ♥

Answer:

1≤x<10, meaning x must be greater than or equal to 1 and less than 10

Step-by-step explanation:

Answer:

ok

Step-by-step explanation:

ok

Answer:

Step-by-step explanation:

4x-7 = 7x-61

-7+61 = 7x-4x

54 = 3x

x = 18

Step-by-step explanation:

The ratio of cats to dogs at a pet store is 4:5. It means that if there are 4 cats in the store then there are 5 dogs, if there are 8 cats(4×2) there then there will be 10 dogs(5×2).

The number of cats is 16 if the ratio of cats to dogs is 4:5 if there are 20 dogs.

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

The complete question is:

The ratio of cats to dogs is 4;5 if there are 20 dogs. How many cats are there?

It is given that:

The ratio of cats to dogs at a pet store is 4:5

Let 4x be the cats and 5x be the dogs

5x = 20

The above equation is a linear equation in one variable.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

x = 20/5

x = 4

Number of cats = 4x

Plug x = 4 in the above expression:

= 4(4)

= 16

Thus, the number of cats is 16 if the ratio of cats to dogs is 4:5 if there are 20 dogs.

Learn more about the ratio here:

brainly.com/question/13419413

#SPJ2

Answer:

Step-by-step explanation:

A. The mean of data set X is greater than the mean of data set Y.

B. The median of data set X is less than the median of data set Y.

C. The standard deviation of data set X is greater than the standard deviation of data set Y.

D. The range of data set X is less than the range of data set Y.

E. The mode of data set X is greater than the mode of data set Y

C.

C. The standard deviation of data set X is greater than the standard deviation of data set Y.

is a true statement .

Answer:

The spread of data set X is greater than the spread of data set Y, and the data sets are normally distributed. Which statement is true?

A.

The mean of data set X is greater than the mean of data set Y.False

B.

The median of data set X is less than the median of data set Y.False

C.

The standard deviation of data set X is greater than the standard deviation of data set Y.True

D.

The range of data set X is less than the range of data set Y.False

E.

The mode of data set X is greater than the mode of data set Y.False

Answer:

Step-by-step explanation:

Answer:

slope = -5/4 and y-intercept= 7

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

56-4=52 then 52/4 is 13