Mathematics High School

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Answers

Answer 1

Step-by-step explanation:

-3x + 7y = 5x + 2y (you subtract the 2y from both sides)

-3× + 5y = 5x (then add 3x to both sides)

5y = 8x (use x = - 5)

5y = 8x - 5 = -40 (both sides are divided by 5)

y = -8

answer is (-5, -8)

Related Questions

Find the variance of the data set below. Round to the nearest tenth. 6, 5, 2, 5, 8

Answers

Answer:

s2 = 4.7

Step-by-step explanation:

2=∑=1(−⎯⎯⎯)2−1

2=−1

2=18.85−1

2=18.84

2=4.7

11b = -55
answer please

Answers

Answer:

b = -5

Step-by-step explanation:

answer: b = -5

explanation: 11 x -5 = -55

hope this helps :)

At a dinner at Priya's favorite restaurant, the meal cost $18 and a sales tax of $1.71 was added to the bill.
How much would the sales tax be on a $34 meal at the same restaurant?
O $3.23
O $3.12
O $3.35

Answers

Answer:

$3.23

Step-by-step explanation:

1.71 ÷ 18 = 0.095 = 9.5%

9.5% × 34 = 3.23

Write the equation of the line perpendicular to y=-1/4x-7 that passes through the point (3,-2)

Answers

Step-by-step explanation:

the equation of line is given by;

y-y1=m(x-x1)

pls solve both i’m begging ‍♀️‍♀️

Answers

1.) 17 dollars 2.) 3 packs

Answer:

$17 and $3

Step-by-step explanation:

He had $ 5 right, he spent 12 so just add 12. Work backwards. Bella spent 12 dollars on 3 packs because 3 packs * $4 = 12. Hope this makes sense. You just want to use the inverse operation.

1. x - 12 = 5. x = 17

2. 4x = 12. x = 3

An oatmeal recipe calls for 4 cups of oats for every 3 cups of milk. If you want to use 9 cups of oats, how much milk would you need to use?

Plz show your work.

Answers

Answer:

[tex]9 \frac{3}{4}[/tex] sups of milk

Step-by-step explanation:

It is given that;

4 : 3 (this represents the proportion of cups of oats to cups of milk)

Now one has to find how many cups of milk will correspond with 9 cups of oats.

First, convert the given ratio to a unit ratio,

4 : 3

/4 /4

1 : [tex]\frac{3}{4}[/tex]

Now multiply the entire ratio by 9 to find out how many cups of milk corresponds to 9 cups of oats;

9 : [tex]\frac{39}{4}[/tex]

Simplify;

9 : [tex]9 \frac{3}{4}[/tex]

what is the distance from L to M?

A. 100 units
B. 14 units
C. 2 units
D. 10 units

Answers

The anwser is 14 units

Answer:

D. 10 units

Step-by-step explanation:

Using the distance formula:

d = √(x2 – x1)² + (y2 – y1)²

Plug in the values of the points:

d = √(3 – (-5))² + (-2 – 4)²

d = √(8)² + (-6)²

d = √64 + 36

d = √100

d = 10

WILL GIVE BRAINLIEST!
The length l of a rectangle is nine less than four times the width w. Express the length of the rectangle in terms of the width.

Answers

Answer:

l = 9 - 4w

Step-by-step explanation:

If a prism has the triangular base shown and a height of 3", then its volume is 384 cubic inches.

True
False

Answers

Answer false :))))))))

PLEASE HELP ME!!! :(

Answers

Step-by-step explanation:

Perimeter=3m+4-m+2m-1=4m+3

so option c

Answer:

its 3+6m

Step-by-step explanation:

you just add those 2 numbers

please help me with this !!!!

Answers

Answer:

y = 5x + 4

Step-by-step explanation:

Starting with 5x - y = -4

Subtract 5x from both sides to get -y = -5x - 4

Multiply the entire equation by -1 to make the y positive

You get y = 5x + 4

Y=5x+4
Write a form of y=mx+d

A right triangle has legs that measure 8 cm and 10 cm. What would the length of the hypotenuse
be to the nearest whole number?

Answers

Answer:

around 13

Step-by-step explanation:

HELPP BHFEJKFFE PLEASEE!!!!!! :))

Answers

Answer:

i would say 5

Step-by-step explanation:

4 is almost the same size as [tex]x[/tex] but [tex]x[/tex] is just a little bit longer and its slanted

Subject:Mathematics

Answers

Question :

The sum of the measure of angle M and angle R is 90°.

The measure of angle m is (5x + 10)°.The measure of angle R is 55°.

What is the value of x?

Answer :

The value of x is 5°

Explanation :

Given :

∠M + ∠R = 90°∠M = (5x + 10)°∠R = 55°

To Find :

Value of x = ?

Solution :

We are given :

∠M + ∠R = 90°

Value of ∠M = (5x + 10)°Value of ∠R = 55°

So, by substituting value of ∠M and ∠R in ∠M + ∠R = 90°, we have :

[tex] \sf : \implies (5x + 10)\degree + 55 \degree = 90\degree[/tex]

[tex] \sf : \implies 5x + 10 + 55 = 90\degree[/tex]

[tex] \sf : \implies 5x + 65 = 90\degree[/tex]

[tex] \sf : \implies 5x = 90\degree - 65 \degree[/tex]

[tex] \sf : \implies 5x = 25\degree[/tex]

[tex] \sf : \implies x = \cancel{\dfrac{25\degree}{5}}[/tex]

[tex] \sf : \implies x = 5\degree[/tex]

[tex] \Large \underline{\boxed{\tt{x = 5\degree}}}[/tex]

Hence, value of x is 5°.

Find the slope (6,-6) and (8,8)

Answers

Answer:

m=7

Step-by-step explanation:

sum of the fractions as a mixed numbers

2 5/6 + 4 3/6 =

Answers

7 and 1/3 hope this helps

Which of the following expressions is equivalent to (2x + 3)(x2 – 7)?

Answers

Step-by-step explanation:

what are the following expressions????

You didn't give any choices but I am still going to solve this.

First let's separate this a little bit.

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

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

Now we can multiply these in again.

=2x^3-14x+3x^2-21

=2x^3+3x^2-14x-21

I will give brainliest!

Answers

Answer:

Step-by-step explanation:

If beans are 10 cans for $10, how much will it be for one can?

Answers

Answer:

1 can=1 dollar

Step-by-step explanation:

10÷10=1 therefore 1 can equals 1 dollar

Answer:

1 dollar :'

b/c yes, i hope this was rhetorical

I feel generous so here yall go first come first serve

Answers

Answer:

thanks

Step-by-step explanation:

thank you for points

can you help me solve

Answers

Answer:

i think d

Step-by-step explanation:

Help I’m on a time limit

Answers

Answer:

I think everything you have selected already is correct

Step-by-step explanation:

triangle FGK is congruent to triangle FJK by the SSA Theorem

Angle GKH is congruent to JKH since they are apart of two triangles that are known to be congruent by the SSA Theorem

Angle GFH is congruent to JFH because they are on triangles that are congruent by the SSS Theorem

Then line FG and line KG cannot be proven to be congruent since they are of no correlation to each other

I hope this helps, sorry if I am incorrect

My uncle Darnell wants to buy a canoe. The regular price is $758, but
today it is on sale for $460 off of the regular price. What is the sale price
of the canoe?

Answers

Answer:

Step-by-step explanation:

290 dollars off

anyone think they could help ?

Answers

i think its 14 or 7/2

what is 4 = 4( c-18)

Answers

Answer:

c = 19

Step-by-step explanation:

Let's rephrase this equation:

4(c-18) = 4

Let's plug in 19

4(19-18) = 4

19-18 = 1

4 multiplied by 1 is 4 so therefore, c = 19

A school principle wants to observe if natural light has an effect in the classroom learning. The principle randomly chooses two groups of students of the same age and grade, and places both groups in rooms on opposite sides of the school, one facing east and one facing west, during a 10am class. The test scores of both classes are compared at the end of the semester.

How could this observation be changed into a valid experiment of the effects of natural light?
A. by introducing adjustable light fixtures in each classroom
B. by tinting the windows in both classrooms
C. by including classrooms facing north and south
D. by introducing adjustable blinds in each classrooms

Answers

The Correction should be B

what is 24.3-(1.3×4)+7.94

Answers

The answer is 27.04

Hope this helps

Becka can make a bracelet in 2 minutes.

Question 1
Part A

Write an equation to express the relationship between the number of bracelets made and the amount of time it took, in minutes, to make them. Let x represent the number of bracelets made and let y represent the time, in minutes, it took to make the bracelets.

Answers

Answer:

2x = y

Step-by-step explanation:

x is how many bracelets made and each bracelet takes 2 minutes to make so x times 2 or 2x and y is the total time took so 2x=y

7100 dollars is placed in an account with an annual interest rate of 7.75%. How much will be in the account after 30 years, to the nearest cent ?

Answers

$66,646.40 is the correct answer

The amount that will be in the account after 30 years, to the nearest cent is to be considered as the $66,646.40.

Calculation of a future value;

Since

The interest rate be like = 7.75%

The time period = 30

The present value = $7,100

The PMT is = $0

Now the following formula is used;

So,

= -FV(RATE,NPER,PMT,PV,TYPE)

After applying it, the future value should be $66,646.40.

Learn more about rate here: brainly.com/question/24546293

Sally answered 90% of the math testquestions and 80% of the history test questions correctly. if each test had 50 questions , how many questions in all did she answer correctly?

Answers

Answer:

85
Step by step explanation

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