Mathematics High School

Evaluate this exponential expression.
4. (2 + 5)2 - 52 =

Evaluate This Exponential Expression.4. (2 + 5)2 - 52 =

Answers

Answer 1

C.171

Step-by-step explanation:

4×7(2)-25

4×49-25

multiply 4×49=196-25

then subtract 196-25=171

Answer 2

Answer:

C. 171

Step-by-step explanation:

[tex]4\cdot (2+5)^2-5^2\\\\Follow\:the\:PEMDAS\:order\:of\:operations\\\\\mathrm{Calculate\:within\:parentheses}\:\left(2+5\right)\::\quad 7\\=4\cdot \:7^2-5^2\\\\\mathrm{Calculate\:exponents}\:7^2\::\quad 49\\=4\cdot \:49-5^2\\\\\mathrm{Calculate\:exponents}\:5^2\::\quad 25\\=4\cdot \:49-25\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:4\cdot \:49\::\quad 196\\=196-25\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:196-25\:\\:\quad 171\\[/tex]

Related Questions

If the temperature starts out in the morning at 12° C but drops 18° by midnight, what is
the new temperature then?
(when they temperature drops, does it get colder or warmer?)
​

Answers

Answer:

it gets colder and it would be -6

Step-by-step explanation:

i hope

Andrea, Beth, & Cathy's ages are consecutive whole numbers. Andrea is the youngest, and Cathy is the oldest. The sum of their ages is 54. How old is Cathy?

Answers

Answer:

Age of Cathy = 19

Step-by-step explanation:

Find:

Sum of their ages = 54

Assume;

Age of Andrea = x

Age of Beth = x + 1

Age of Cathy = x + 2

Sum of their ages = x + x + 1 + x + 2

54 = 3 x + 3

3 x = 51

x = 17

Age of Cathy = x + 2

Age of Cathy = 17 + 2

Age of Cathy = 19

19. What is 0.00375 expressed in scientific
notation?
A. 3.75x10-3
B. 3.75x10-2
C. 3.75x102
D. 3.75x10

Answers

Answer:

answer is A 3.75x10^-3

I turned the dial on my stove 45 degrees from the start position If i continue to turn the dial how many degrees further will i need to rotate it to return to the start position.

Answers

Answer:

Hello!

YOUR ANSWER IS 315 DEGREES MORE

Step-by-step explanation:

To get it to the start position is the same as TURNING IT 360 DEGREES!

So from 45 degrees to reach 360 degrees...another 315 degrees will be needed!

HOPE THIS HELPS!!

PLEASE HELP. FIRST (CORRECT) ANSWER GETS BRAINLIEST

Simplify the expression

12 - 4 x 3 / 7 + 13 x 15

Answers

Answer:

the answer is 240 multiply and divide

Answer:240

Step-by-step explanation:

Use the order of operations. (PEMDAS)

Parenthesis

Exponent

Multiply

Divide

Addition

Subtraction

Hope this helped dude

BIG IDEAS MATH

Chapter2-Section2
i
Write a function g whose graph represents a reflection in the y-axis of the graph of f(x) = -x+1.
g(x) =
Help!!!

Answers

Answer:

f(x) = -x+1

to find x-intercept/zero substitute f(x)=0.

0=-x+1

0=-x+1  move variable to the left-hand side and change its sign.

x=1

Julie goes to the park across the street from her house several times a day and jogs a total of six miles every day. She jogs three-fourths of a mile at a time. What is the divisor?

Answers

Answer:

The Divisor is 6 miles

Step-by-step explanation:

A Divisor is also defined as a number by which a another number called dividend is divided by with or without having a remainder.

Divisor ÷ Dividend = Quotient

We are told that Julie goes to the park and jogs a total of six miles every day. She jogs three-fourths of a mile at a time.

In 1 day = 6 miles

Spread throughout the day, or per time , Jules jogs 3/4 of a mile

To find out how many times she jogs in a day, 6 miles will be divided by 3/4

Divisor ÷ Dividend = Quotient

= 6 ÷ 3/4

= 8 times in a day.

Looking at the above, calculation, 6 miles is the Divisor.

The scale factor of a room for a scale drawing is 2.3. The actual length of a wall in the room is 46 feet and the actual width of the room is 69 feet. What is the area of the scale drawing?
50 square feet
500 square feet
600 square feet
1380 square feet
PLEASE HELP ME!!!!!!!

Answers

Answer:

There's two ways to solve this.

Step-by-step explanation:

First way:

Let's divide the width and length by 2.3.

46÷2.3=20

69÷2.3=30

20×30

600 ft²

Second Way:

Let's find the area of the actual room.

46×69

3,174 ft²

Let's find the scale drawing squared.

2.3²=5.29

3,174÷5.29

600 ft²

Answer:

600

Step-by-step explanation:

answer on edge 2021

Have a great day!

Selena and Drake are evaluating the expression (StartFraction r s Superscript negative 2 Baseline Over r squared s Superscript negative 3 Baseline EndFraction) Superscript negative 1, when r = negative 1 and s = negative 2.


Selena’s Work
Drake’s Work

(StartFraction r s Superscript negative 2 Baseline Over r squared s Superscript negative 3 Baseline EndFraction) Superscript negative 1 Baseline = (r Superscript negative 1 Baseline s) Superscript negative 1 Baseline = StartFraction r Over s EndFraction = StartFraction negative 1 Over negative 2 EndFraction = one-half

(StartFraction (negative 1) (negative 2) Superscript negative 2 Baseline Over (negative 1) squared (negative 2) Superscript negative 3 EndFraction) Superscript negative 1 = (StartFraction (negative 1) (negative 2) cubed Over (negative 1) squared (negative 2) squared EndFraction) Superscript negative 1 = (StartFraction negative 8 Over 4 Endfraction) Superscript negative 1 Baseline = StartFraction 4 Over negative 8 EndFraction = negative one-half


Who is correct and why?
Selena is incorrect because she should have substituted the values for the variables first, and then simplifed.
Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.
Drake is incorrect because he should have simplified first, before substituting the values for the variables.
Drake is correct because he substituted the values for the variables first, and simplified correctly

Answers

Answer:

Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.

Step-by-step explanation:

Given that sin(90 -5ϴ) = Cos(180 - ϴ), Find the value of ϴ​

Answers

Answer:

30°

Step-by-step explanation:

[tex] \because \: \sin(90 \degree - \theta) = \cos \theta \\ \therefore \: \sin(90 \degree - 5 \theta) = \cos 5\theta....(1) \\ \\ \sin(90 \degree - 5 \theta) = \cos(180 \degree - \theta)...(2) \\ from \: (1) \: and \: (2) \\ \cos 5\theta = \cos(180 \degree - \theta) \\ 5 \theta = 180 \degree - \theta \\ 5 \theta + \theta= 180 \degree \\ 6\theta= 180 \degree \\ \theta = \frac{180 \degree}{6} \\ \\ \huge \red{ \boxed{\theta = 30 \degree}}[/tex]

Each scoop of ice cream costs $3.50, which expression below represents the cost of x scoops of ice cream?

Answers

Answer:3.5•x or 3.5x

Step-by-step explanation:

Solve for x in the diagram below.

Answers

Answer:

77

Step-by-step explanation:

why because 100+3=103

and this is half a circle so the answer is 180-103 that is 77

Answer:

x = 20°

Step-by-step explanation:

From the question it can be seen that all the angles lie on a straight line and

Angles on a straight line add up to 180°

To solve for x add up all the angles and equate them to 180°

That's

x + 3x + 100 = 180

4x + 100 = 180

Subtract 100 from both sides

4x + 100 - 100 = 180 - 100

4x = 80

Divide both sides by 4

We have

[tex] \frac{4x}{4} = \frac{80}{4} [/tex]

We have the final answer as

x = 20°

Hope this helps you

(02.01)
Solve for x: 3x - 5 = 2x + 6. (1 point)
a
-1
d
-11

Answers

Answer:

Step-by-step explanation:

3x - 5 = 2x + 6

x - 5 = 6

x = 11

PLEASEEEEEEEEEE HELPPPPP❤️

Answers

Answer:

B

Step-by-step explanation:

-6+√-4 = -6+2i

Answer:

-6 + 2i

Step-by-step explanation:

The square root of -4 is the imaginary number: 2i The -6 stays the same. So add,, but don't combine real and imaginary numbers.

-6 + 2i

4.78 gallons of milk is sold for $11.00. If you want to buy 9.58 gallons of milk, how
much will you have to pay?

Answers

Answer:

You will have to pay $22.05.

Step-by-step explanation:

We can solve this problem by making a proportion:

4.78 gallons/11 dollars = 9.58 gallons/x dollars

By cross-multiplying, we can solve for x:

4.78x = 105.38

x = 22.05

Given: Line segment N M is parallel to line segment P O. and Angle 1 is-congruent-to angle 3 Prove: Line segment N M is parallel to line segment N O. What is the missing reason in the proof?given transitive property alternate interior angles theorem converse alternate interior angles theorem

Answers

Answer:

yeah its parrellell

Step-by-step explanation:

Jonus watches the second hand on an analog clock as it moves past the numbers. What is the
probability that at any given time the second hand on a clock is between the 2- and the 3-hour numbers?

Answers

Answer:1/12 or 8.3

Step-by-step explanation:

what is the answer to ,Evaluate 2⁶​

Answers

The answer is 64 because you multiply 2*2*2*2*2*2.

What is the value of |-12| ?

Answers

Answer:

12

Step-by-step explanation:

the absolute value of any negative number is the number in positive form.

Answer:

Hello!

The value would 12 cause it is the absolute value

For example:

If the is negative 12 the absolute value would be the opposite, so it would be positive 12.

But if it was

|12| then it would stay the same

Hope this helps!

-Fishylikeswater

A building is of unknown height. At a distance of 400 feet away from the building, an observer notices that the angle of elevation to the top of the building is 35º and that the angle of elevation to a poster on the side of the building is 15º. How far is the poster from the roof of the building? Round your answer to the nearest tenth.

Answers

Given :

A building is of unknown height. At a distance of 400 feet away from the building .

An observer notices that the angle of elevation to the top of the building is 35º and that the angle of elevation to a poster on the side of the building is 15º .

To Find :

How far is the poster from the roof of the building .

Solution :

Height is given by :

[tex]h=d\times tan\theta[/tex]

( Here , [tex]\theta[/tex] is angle of elevation )

So , height of tower :

[tex]H=400\times tan 35^o\\\\H=280.08 \ feet[/tex]

For height of poster :

[tex]h=400\times tan 15^o\\\\h= 107.18\ feet[/tex]

Therefore , distance of poster from the roof of the building is :

[tex]( 280.08-107.18) = $$172.9\ feet[/tex]

Hence , this is the required solution .

Question 3 Evaluate the expression if x = 5 and y = 2 10 + 3x + 5y​

Answers

Answer:

Sooo...

Step-by-step explanation:

1+2=7

Simple really.

What iswhat is 10 * 9 equal ​

Answers

Answer:

90

Step-by-step explanation:

10 times 9 is 90.
10,20,30,40,50,60,70,80,90

What is the Solution

Answers

Answer:

16x=1 x=1/16 or 0.0625

2/5x=1 x=5/2 or 2.5

Step-by-step explanation:

for 16x=1 divide both sides by 16, 1 divided by 16 is 1/16 or 0.0625

for 2/5x=1 multiply by the reciprocal of 2/5 which is 5/2. 5/2 times 1 is just 5/2 or 2.5.

Brainliest for the correct answer

Answers

Answer:

Hey there!

w-99=119

w=218

x/3=103

x=309

y/2=146

y=292

Let me know if this helps :)

Find the product. −2 (3.1) lol another

Answers

Answer:

-6.2

Step-by-step explanation:

multiply -2 times 3.1

Answer:

-6.2

Step-by-step explanation:

You have a certain number of books in your library. You bought more books to triple your amount, then decide to give 14 away to your local school. You then give half of your remaining books away to charity. You end with 8 books left. How many books did you start with?

Answers

Answer:

10 :)

Step-by-step explanation:

(3x - 14) / 2 = 8

3x - 14 = 16

3x = 30

x = 10

(A) this relation is a function

(B) this relation is not a function

Answers

Answer:

(b) this relation is not a function because this relation is a one to many ,functions are only many to one and one to one

If the student’s GPA is 3.384 how many credits is physics

Answers

Answer:

Let x = number of additional credits the student needs to get 4.0 GPA on. 52 credits with a GPA of 2.8 means a total of 52 * 2.8 = 145.6 145.6+4x52+x=3.2 Solve the equation for x

Step-by-step explanation:

Because i said so

The diameter of a circle is 7 in. Find its area to the nearest tenth.

Answers

A = πr^2
D = r • 2
R = D/2
7/2 = 3.5
R = 3.5

A = πr^2
A = 3.14 • 3.5^2
A = 3.14 • 12.25
A = 38.465
A = 38.47

So therefore the area of the circle is 38.47!

Find the distance between the two points. (5,-3) (-4,7)

Answers

Answer:

-9.4

Step-by-step explanation:

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