If x=7 and y=−5, evaluate the following expression:3x−y2​

Answers

Answer 1

Answer:

the expression is equal to 31

Step-by-step explanation:

3x-y23(7) - (-5)221 - (-10)21 + 10 = 31
Answer 2

Answer:

31

Step-by-step explanation:

Substitute x and y into the equation to get..

(3×7)-(-5×2)

21- -10

31

Hope this helps :)


Related Questions

What is the probability of people choosing ice cream or soda? Write your answer as a decimal. 30points Only if you get it right

Answers

Answer 50% or .5 there are 2 things

PLZ ANSWER FOR TEST
In triangle xyz, angle x measures 19.9° and angle
y measures 113.6°. what is the measure of angle z

A. 113.5°
B. 47.5°
C. 46.5°
D. 180°​

Answers

Answer:

C

Step-by-step explanation:

19.9 + 113.6 = 133.5

180-133.5= 46.5

Answer:

[C] 46.5°

Step-by-step explanation:

Given:

In triangle xyz, angle x measures 19.9° and angle

y measures 113.6°. what is the measure of angle z

Note that:

Triangle = 180 degree

Solution:
Since,

x = 19.9 degree

y = 113.6 degree

then we have:

19.9 + 133.6 + z = 180

133.5 + z = 180

Subtract both sides by 133.5

133.5 - 133.5 = 180 - 133.5

x = 46.5 degree

Hence, the measure of angle z is 46.5

Also means that [C] 46.5 is the correct answer.

Kavinsky

Polynomial Multiplication: Please HELP ITS FOR MATH!!!!

Answers

Answer:

Step-by-step explanation:

1. Monomial times Monomial

2. Binomial times Binomial

3. Binomial times Trinomial

4. Monomial times Trinomial

5. Binomial times Monomial

Answer: (The first number will be for the side on the left and the second will be for the on the right it matches with) (1, 3) (2, 1) (3, 5) (4,2) (5, 4)

Step-by-step explanation:

The nomial number(prefix) is determined by how many terms are in a parentheses. For example, The first one (3z) (9z) has one term bc 3z is one tern and 9z is one term so they are both monomials but b-1 would be a binomial because it has two terms so knowing that should explain my answers

the area of a rectangle is the same as the area of a square of side 12cm .if the rectangle is 16 long find its width.​

Answers

Answer:

width = 9 cm

Step-by-step explanation:

the area of a 12cm square is 144

16w = 144

x = 9

Antoine and Tess have a disagreement over how to compute a 15% gratuity on $46.00.

Tess says, “It is easy to find 10% of 46 by moving the decimal point one place to the left to get $4.60. Do that twice. Then add the two amounts to get 4 dollars and 60 cents + 4 dollars and 60 cents = 9 dollars and 20 cents for the 15% gratuity.”

How should Antoine respond to Tess’s method?
“Tess, the best way to find 15% of $46.00 is to multiply StartFraction 1 over 15 EndFraction by $46.00 to get $3.07, which is the 15% gratuity.”
“Tess, you found 20% of the number because you added 10% and 10%. You need to add 10% to One-half of 10%. Add $4.60 and $2.30 to get $6.90, which is the 15% gratuity.”
“Tess, the best way to find 15% of $46.00 is to multiply 0.015 and 46.00 to get $0.69, which is the 15% gratuity.”
“Tess, you should use a table with 5% segments to find the gratuity. Each 5% segment has a value of $9.20, so that is the 15% gratuity.”

Answers

Answer:

How would Antonio respond....she would say "Thanks for the practice ".

Tess is right about it being easy to find 10% of 46 by moving the decimal point 1 place to the left to get 4.60.....but there is no need to do that twice....because if u do 10% twice, ur doing 20%.

okay....once u get 10% of 46 = 4.60....then u figure 5% of 46 = (0.05(46) = 2.30....because 10% + 5% = 15%.....then u add those together.....4.60 + 2.30 = 6.90. This can easily be checked...15% of 46 = 0.15(46) = 6.9 ,just like 10% of 46 + 5% of 46 = 6.9

Answer:

Rergvfgvf

Step-by-step explanation:

what is 92.471 to the nearest tenth

Answers

Answer:

92.75

Step-by-step explanation:

tenth spot is to right of decimal round up or down depending on the next number

The answer is 92.5. It rounds to 92.5 instead of 92.4 because the 0.07>0.05

WHOEVER ANSWERS I WILL MARK BRAINLIEST

Answers

Answer:

B

Step-by-step explanation:

Prime Factorization involves breaking down a number into prime numbers (aka numbers that can only be divided by itself and 1)

36

9  x  4

(3x3) x (2x2)

Hope that helps!

Lets multiply all the choices so we can see if it all multiplied is 36.

A) 2 • 2 • 2 • 3

   4 • 2 • 3

   8 • 3

   24

B) 2 • 2 • 3 • 3

   4 • 3 • 3

   12 • 3

   36

C) 2 • 3 • 3 • 3

   6 • 3 • 3

   18 • 3

   53

D) 1 • 2 • 2 • 3

   2 • 2 • 3

   4 • 3

   12

The answer is B! I hope this helps.

Find the volume of the figure

Answers

Answer:

760ft

Step-by-step explanation:

First you find the volume of the rectangle thing :)

so 14 times 19 times 2 = 532ft

than you need to do the triangle so 20 - 14 (for base length) is 6

so 19 times 6 times 2 = 228ft

now you ad them, so 532 + 228 = 760

Which operation would you use to solve for x in the equation 3x = 15?
O Addition
O Division
O Squaring
O Subtraction

Answers

Answer:

division

Step-by-step explanation:

you need to get the x by its self because right now x is being multiplied by 3 tou divide it out

Answer:

Division

Step-by-step explanation:

you will divide both sides by 3..the number that is disturbing x”

2/9 of the students in the school are in 6th grade.

a. How many 6th graders are there if the school has 90 students?

b. How many 6th graders are there if the school has 27 students?

c. How many 6th graders are there if the school has x students? Write an

Answers

Answer:

a. 20

b. 6

c. y=2/9x

Step-by-step explanation:

Jordan fills several bags with oranges. This line plot shows the weight of each bag.


How many more pounds does one of the heaviest bags weigh than one of the lightest bags?


Enter your answer as a fraction in simplest form by filling in the boxes.



lb

Answers

Answer:

2 1/2

Step-by-step explanation:

The heaviest bag weighs 4 pounds, and the lightest bag weighs 1 1/2.

4 can be converted to 8/2 and 1 1/2 can be converted to 3/2.

8/2-3/2=5/2.

5/2 converts to 2 and 1/2 or 2.5

The heaviest bags weigh than one of the lightest bags by 2.5 pounds.

What is fraction?

A number expressed as a quotient, in which a numerator is divided by a denominator.

The heaviest bag weighs 4 pounds,

and the lightest one weighs 3/2 pounds

The difference between the heaviest and lightest one is:

= 4-3/2

= 8/2-3/2

=5/2 pounds

= 2.5 pounds

Learn more about fractions here:

https://brainly.com/question/10354322

#SPJ2

Find the area of triangle ABC and the area of XYZ. AABC - AXYZ.

Answers

Answer:

ABC= 60 XYZ=540

Step-by-step explanation:

The area of a triangle is 1/2*base*height so for ABC we need to find the height first. To do this we use pythag theorem, and create the equation 13^2=5^2+height^2 rearranging this we can figure out that sqrt(height)=13^2-5^2. For the base we do 2*5 since there are two congruent line segments both equal to 5. Using this we can do 1/2*12*10=area of ABC

For XYZ we can do 1/2*30*36=area of XYZ, we can do 2*15 since there are 2 congruent 15 length line segments at the base.

2x-1/3+3=x-3/5


pls do make sure to answer this *only if you know*
thank you

Answers

Answer:

[tex] x = - 3 \frac{4}{15}[/tex]

Step-by-step explanation:

[tex]2x - \frac{1}{3} + 3 = x - \frac{3}{5} [/tex]

[tex] = > 2x - \frac{ 1 +9 }{3} = x - \frac{3}{5} [/tex]

[tex] = > 2x + \frac{8}{3} = x - \frac{3}{5} [/tex]

[tex] = > 2x - x = - \frac{3}{5} - \frac{8}{3} [/tex]

[tex] = > x = - \frac{9 - 40}{15} [/tex]

[tex] = > x = - \frac{49}{15} [/tex]

[tex] = > x = - 3 \frac{4}{15} (ans)[/tex]

Answer:

x = - [tex]\frac{49}{15}[/tex]

Step-by-step explanation:

Given

2x - [tex]\frac{1}{3}[/tex] + 3 = x - [tex]\frac{3}{5}[/tex]

Multiply through by 15 ( the LCM of 3 and 5 ) to clear the fractions

30x - 5 + 45 = 15x - 9 , that is

30x + 40 = 15x - 9 ( subtract 15x from both sides )

15x + 40 = - 9 ( subtract 40 from both sides )

15x = - 49 ( divide both sides by 15 )

x = - [tex]\frac{49}{15}[/tex]

Find the area of a pizza with radius 4 inches.

Answers

Answer:

50.24

Step-by-step explanation:

4x4x3.14

(4 because of the radius)

(3.14 because of pi)

4x − 5 + x = 3 + 2x + 4 what is the value of x?

Answers

Answer:

x=4

Step-by-step explanation:

4x-5+x=3+2x+4

5x-5=7+2x

5x-2x=7+5

3x=12

x=4

7. One pint is equal to 2 cups. Gavin's
recipe lists a cup of milk. How many
pints of milk is this?
Answer quick PLZZ no website

Answers

Answer:

1/2 pint or 0.5 pint

Step-by-step explanation:

1 pint = 2 cups

(1 pint)/2 = 1 cup

1/2 pint = 1 cup

1/2 pint or 0.5 pint

In a company's first year in operation, it made an annual profit of \$333,500$333,500. The profit of the company increased at a constant 8% per year each year. How much profit would the company make over the course of its first 24 years of operation, ?

Answers

P × R × T ÷ 100

333,500 × 8% ×24 ÷ 100

64,032,000÷100

640,320

The amount of profit would the company make over the course of its first 24 years of operation should be $2,114,784.

Calculation of the amount of profit:

Since annual profit is $333,500

The profit percentage should be likely 8%

And, the number of years should be 24

So, the amount of profit should be

[tex]= $333,500 * (1 + 0.08)^{24[/tex]

= $2,114,784

hence, The amount of profit would the company make over the course of its first 24 years of operation should be $2,114,784.

Learn more about profits here: https://brainly.com/question/10176219

I need the Area and Perimeter.​

Answers

Answer:

P = 40 m

A = 100 m²

Step-by-step explanation:

(10√2)² = 200

200/2 = 100

side length = √100 = 10 m

P = 10 x 4 = 40 m

A = 10 x 10 = 100 m²

Does anyone understand this?

Answers

i think it’s 90.
11+ 11 +4 +4 = 30
30 * 3 =90

Answer:

88

Step-by-step explanation:

11*4 = 44

4*4 = 16

11-4 = 7

7*4 = 28

44+16+28 = 88

The numerator of the given fraction is 4 less than the denominator. If 5 is added to both numerator and denominator, the resulting fraction is equivalent to 5/7 . What is the original fraction? heeeeeeelp!!!

Answers

Answer:

5/9

Step-by-step explanation:

Let the denominator be k and thus numerator be 4 less than k or k - 4.

Fraction = (k - 4)/k

If 5 is added to both:

=> (k-4 + 5)/(k + 5) = 5/7

=> 7(k + 1) = 5(k + 5)

=> 7k + 7 = 5k + 25

=> 2k = 18

=> k = 9

Thus,

Fraction is (k-4)/k = (9-4)/9 = 5/9

Area and Perimeter. ​

Answers

Answer:

A = b x h

P = b + b + h + h

A = 84 in

P = 38 in

a= 84

p= 38

Like a neighbor, state farm is there.

which values are solutions to the inequality below, need explanation to better understand if it can be given.

Answers

Answer:

a b and d

Step-by-step explanation:

reposttttttt
Calculate the volume of a prism with a length of 7/8ft, width 2/3 ft and height 1/2 ft. BE SURE TO EXPLAIN ALL STEPS

Answers

Answer:

14/48 Feet

Step-by-step explanation:

First, you multiply 7/8x2/3 which equals 14/24, which makes the base of the prisim 14/24 feet. Then you need to multiply 14/24 ( the base) by 1/2 (the height). 14/24x1/2= 14/48.

The final answer is 14/48.

A rectangle with an area of 37 units2 is dilated by a scale factor of 2. Find the area of
the rectangle after dilation. Round your answer to the nearest tenth, if necessary.

Answers

Answer:

74

Step-by-step explanation:

37x2=74

what is the greatest common factor of the polynomials: 35x^4+10x^3+25x^2

Answers

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

5x^2

Step-by-step explanation:

35x^4 + 10x^3 + 25x^2 =

Break up each term into a product of all its prime factors.

= 5 * 7 * x * x * x * x + 2 * 5 * x * x * x + 5 * 5 * x * x

Now see which factors are in common to all terms.

GCF = 5x^2

Write an exponential decay model for each situation. The value of x for each value of f(x) will lie between two consecutive whole numbers. List the whole numbers.

initial value: 1,800
decay rate: 7%
f(x) = 400

Answers

Answer:

The numbers are;

20 and 21

Step-by-step explanation:

A general form of an exponential decay model can be presented as follows;

f(x) = a·(1 + r)ˣ

Where;

f(x) = The output for a given input variable, 'x'

x = The input variable

a = The initial value

r = The growth (+ve) or decay (-ve) rate

When f(x) = 400, a = 1,800, r  = -7% = -0.07, we get;

400 = 1,800 × (1 - 0.07)ˣ

(1 - 0.07)ˣ = 400/1,800 = 2/9

ln((1 - 0.07)ˣ) = ln(2/9)

x = ln(2/9)/(ln(1 - 0.07)) ≈ 20.73

The value of 'x' lies between 20 and 21.

3(2x – 1) is 15 more than 8 what is the value of x?

Answers

1. Distribute or open parenthesis

= 6x-3

15+8= 23

2. Solve

6x-3 = 23

Subtract 3 on both sides

6x= 20

Divide both side by 6

x= 20/6

x= 3.333 or 3 1/3


Steve gets paid $50 a week plus $5 for each item he sells. He wants to know how many items he needs to sell, x, to make at least $220 in one
week
Select all the inequalities that represent the situation


HELLPPPPP

Answers

Answer:

Steve needs to sell 34 items.

Step-by-step explanation:

S= 5x+50

220=5x+50

-50       -50

170= 5x

/5       /5

34 =  x

Check:

220= 5(34)+50

220=170+50

220=220

someone please help me fill in the blanks!!!!

Answers

Answer:

USE PHOTOMATH OR CYMATH UR WELCOME

Step-by-step explanation:

Answer:

#2 is 2^-9.  #3 is 1/6^15. #4 is 10^8.

Step-by-step explanation:

Remember that with exponents, division is subtraction, and multiplcation is addition.

So for the first problem, 2^-5 / 2^4 is really:

2^-5-4

This is simply 2^-9 power.

Next we have (6^-3)^5. I dont mean to confuse you, so just remember. When, and ONLY when and exponent is INSIDE parentherse, can it be multplilied by another exponent that is OUTSIDE of the parenthesese. SO we can write this as:

6^-3*5

This equals:

6^-15

Which can further be simplyfied to:

1/6^15

Countinuing on we have 10^-12 / 10^-20. Since we are dividing, we subtract to exponenets. So we can write this as:

10^-12 - -20

This is just 10^8 power.

Hope this helps! :)

A $60 sweater is on sale for 25% off. There is an additional 10% discount offered if you sign up for a credit card. What is the sale price of the sweater if you sign up for a credit card?

Answers

Answer:$39

Step-by-step explanation:

Answer: $39.00 I'm pretty sure

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