Simplify using order of operations.

5³+28 /7-1

Answer:

2

Step-by-step explanation:

For Example, To complete the square when a is greater than 1 or less than 1 but not equal to 0, factor out the value of a from all other terms.

For example, find the solution by completing the square for:

2x2−12x+7=0

a≠1,a=2 so divide through by 2

22x2−122x+72=02

which gives us

x2−6x+72=0

Answer:

9 13/20

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]LHS = \frac{2 tan x}{Sec^{2} x}\\\\= 2tan x * \frac{1}{Sec^{2}x}\\\\= 2*\frac{Sinx }{Cos x}*Cos^{2}x\\\\= 2Sin x *Cos x\\= Sin 2x[/tex]

Answer:

the slope is -1/2

Step-by-step explanation:

Answer:

160

Step-by-step explanation:

140 divided by 7 equals 20, then you times the answer by 8, which you get 160.

Step-by-step explanation:

given,

alex = x

bella = 3x

cara = x - 10

and also given,

[tex]x + 3x + (x - 10) = 90 \\ x + 3x + x - 10 = 90 \\ 5x - 10 = 90 \\ 5x = 90 + 10 \\ 5x = 100 \\ x = 100 \div 5 \\ = 20[/tex]

Given x = £20,

Alex = £x = £20

Bella = £3x = £3x20 = £60

Cara = £(x-10) =£(20-10) =£10

Answer: since you didnt answer mine.

Step-by-step explanation:

Answer:

$119.79

Step-by-step explanation:

Formula:

[tex]A=P(1+\frac{r}{n} )^{nt}[/tex]

Given:

P = 90

r = 0.1

t = 3

n = 1

Work:

[tex]A=P(1+\frac{r}{n} )^{nt}\\\\A=90(1+\frac{0.1}{1} })^{3*1}\\\\A=90(1.1)^3\\A=90(1.331)\\A=119.79[/tex]

Answer:

Option C

Step-by-step explanation:

The two triangles will be similar if the ratio of their corresponding sides are proportional. Let's check this ,

1st side :-

= 8:3

2nd side :-

= 10 : 4 = 5:2

3rd side :-

= 6:5 .

Since the ratio of the sides of triangle are not same therefore that 2 triangles are not similar .

Option C is correct .

Answer:

The answer is -4/5 C

Step-by-step explanation:

Answer:

20%

Step-by-step explanation:

The uniform cost $8 more than last year.

Last year was $40

Find what percent of 40 is 8.

8/0.4 = 20

the percent change is 20%

Answer:

330

Step-by-step explanation:

Answer:

D) Multiply

Explanation:

The word "of" usually means you multiply.

Answer:

hmmm................chupapu

Answer:

How is DC 12 units if all the sides are congruent and AB clearly states that it is 9 units long?

Doesnt make sense

Answer:

Step-by-step explanation:

hello : the equation is : √3 sinθ= -3 cosθ means :

sinθ/cosθ = -3/√3

sinθ/cosθ = - √3 because : 3 =√3 ×√3

but : sinθ/cosθ = tan θ

tan θ = - √3 and - √3 = tan( π - π/3) = tan(2 π/3)

you have : tan θ = tan(2 π/3)

note : tanx=tany means : x= y + k π ... k in Z

so : all solutions in R are θ = 2 π/3+k π ... k in Z

Answer:

Lesser x = -9

Greater x = 9

Step-by-step explanation:

9514 1404 393

Answer:

  120 square inches

Step-by-step explanation:

The formula for the area is ...

  A = (1/2)Pa

where P is the perimeter and 'a' is the apothem. The perimeter of this octagon is 8 times the side length.

  A = (1/2)(8×5 in)(6 in) = 120 in²

The area of the octagon is 120 square inches.

Answer:

  10, 38, 47

Step-by-step explanation:

The perimeter is the sum of the side lengths:

  95 = n +(3n +8) +(4n +7)

  80 = 8n . . . . . . subtract 15

  10 = n

  3n+8 = 3(10) +8 = 38

  4n+7 = 4(10) +7 = 47

The lengths of the sides of the triangle are 10, 38, 47.

Answer:

Miles must travel a minimum of 22 times and a maximum of 36 times to achieve Gold status.

Step-by-step explanation:

Given that Miles takes a 350-mile round-trip flight to visit his parents, and to qualify for Gold status at Awesome Airlines, one must fly at least 7700 and less than 12600 miles each year, to determine how many times would Miles need to visit his parents each year to attain Gold status, the following calculation must be performed:

7700/350 = X

22 = X

12600/350 = X

36 = X

Thus, Miles must travel a minimum of 22 times and a maximum of 36 times to achieve Gold status.

Answer:

C

Step-by-step explanation:

The test produced, a t-value of 3.34 and a p-value of 0.001 as a result. The possibility of seeing a test statistic at least as extreme as 3.34 is 0.001; the proper reading of the p-value is different if the alternative hypothesis is true.

p-value = 0.001

t = 3.34

Therefore, the final answer is "Option d".

Find out more information about the p-value here:

brainly.com/question/14723549

Answer:

-0.5

Step-by-step explanation:

-12.5 - (-12) = -12.5 + 12 (because you distribute the minus sign). Then, when adding you get - 0.5

Answer:

-0.5

Step-by-step explanation:

-12.5-(-12)

-12.5 + 12

-0.5

Answer:

[tex]P(x^{2} \geq 10.65) = 0.03\\[/tex]

Step-by-step explanation:

Since there are 5 categories, there are 5−1=4 degrees of freedom. The probability of obtaining a chi-square test statistic greater than or equal to 10.65 with 4 degrees of freedom is approximately 0.03, as found using technology.

Answer:

The slope of this line is -4

Answer:

B)

Step-by-step explanation:

k > 11

Since the sign is > that means it's an OPEN circle

Since the sign is > that means it's going to the RIGHT

Answer:

3x²+4

Step-by-step explanation:

To find the derivative of something with respect to x, for each term multiply the power on the x in that term by the coefficient in the same term, and then lower the x's power by one.

For example, if we had to find the derivative of 2x³, we would first multiply the power on the x (3) by the coefficient (2): 6x³. Then lower the x's power by one: 6x². So the derivative of 2x³ is 6x².

To find the derivative an expression with several terms added together, you just do the same for each terms.

d(x³+4x)/dx

= [tex]\frac{d}{dx}[/tex] x³+4x

= 3x²+4

Answer:

w = 10

Step-by-step explanation:

6w - 6 = 54

6w = 54 + 6

6w = 60

w = 60/6

w = 10

Answer:

yes

Step-by-step explanation:

the ratio of 28 : 36 can be simplifeid by dividing both sides of the ratio by 4.

28/4=7

36/4=9

so the ratio of 28 : 36 is equal to 7 : 9