Mathematics High School

what is -x+y=30
x=7y

Answers

Answer 1

Answer:

the answer is 37

im 100% positive

Step-by-step explanation:

Related Questions

i need to know the answer to these two questions up at the top please

Answers

A) x=3 and b) x= 9/3

Answer:

x = 3

x = 4.5

Step-by-step explanation:

A) 2(5x - 3) = 24

5x - 3 = 12 (divide both sides by 2)

5x = 15 (add 3 to both sides)

x = 3 (divide both sides by 5)

B) 5(2x + 1) = 50

2x + 1 = 10 (divide both sides by 5)

2x = 9 (take 1 away from both sides)

x = 4.5 (divide each side by 2)

Where were MOST of France's colonies located in Africa?
A in the west
B. in the south
C. in the northeast
D. in the northwest

Answers

A in the west africa

Please guys please, I need help ASAP, giving brainleist!

Answers

Answer:

Step-by-step explanation:

a 2m+5=13

2m=8

m=4

b 3m/5=-6

3m=-30

m=-10

c 4-5x=19

-5x=15

x=-3

d x/4-10=2

x=48

e -24=8(h+3)

-24=8h+24

-48=8h

h=-6

f -3+d/2=9

-3+d=18

d=21

hope this helps!

(attached image in the file below)

What is 3/4 - 1/3 ??

Answers

Answer:

5/12

Step-by-step explanation: I used a calculator

what can 980 be divided by

Answers

Step-by-step explanation:

there are so many numbers that can be divided into 980 like 2,3,4,5 etc....

What is the value for x and for y?

Answers

Answer:

20+7x=90

x=10

50+2y=90

y=20

I think
X=10
Y=20
Because a straight line is 180. So 180-20=160 from there you see that one of the angles is a right angle, you can tell this by that it has that little cube in the middle. So 160-90=70 that means that 7x=70 bit you are trying to find for x so divid 70 by 7 that equals 10.
Now to solve for why you have to plug in the information you already know. Vertical angles are congruent. That means that the that the 20 goes straight across and 7x with is actually 70 goes straight across. Now you already know the angle in the middle is 90 but this this it’s split. Since x is 10 multiply 5 by 10 then you get 50 now 90-50=40. 2y is 40 divide it by 2 to get y=20.
I’m bad at explaining so I hope I didn’t confuse you.

In the figure, AB || CD. If m<1=70° and m<2 = 45°, find the m<3

Answers

Answer:65 degrees

Step-by-step explanation: a triangle has 180 degrees.

one angle is 45 degrees and the other is 70

if we add them together we get 115

180-115 is 65

m3 is 65 degrees

How many grams are in 4.3 moles of ammonium chloride

Answers

Answer:

230 g

Step-by-step explanation:

4.3 x molar mass of NH4Cl

Molar Mass of NH4Cl = 14.0067 + 4x1.0079 + 35.453 = 53.491

4.3 x 53.491 = 230 g

If using the method of completing the square to solve the quadratic equation x^2-5x-19=0x, which number would have to be added to "complete the square"?

Answers

Answer:

25/4 or 6.25

Step-by-step explanation:

Given that the general equation of  a quadratic equation is given as

ax^2 + bx + c = 0, to complete the square, we subtract c from both sides of the equation and add the square of (b/2a) to both sides.

Hence given x^2-5x-19=0, to complete the square, we add

(-5/2)^2 to both sides following the illustration given.

This is 25/4 or 6.24

Which of the following equations would be parallel to the line x = 3?

1. y = 3x

2. y = 1

3. y = x

4. x = 5

Answers

Answer:

4. x = 5

Step-by-step explanation:

For two lines to be parallel they must have the same slope, but not be the same line. Both x=3 and x=5 both have slopes of 0, so they are parallel. Another way to tell is that x=3 is a vertical line; therefore, it will be parallel to any other vertical line, such as x=5.

The last answer is correct... x = 5

simplifie A=2 X x + y x 5 + z x z

Answers

Answer:

2x + 5y +z²

Step-by-step explanation:

you multiply 2 and x then y and five and z and z

22) (2n-q)-56-2,4nt4)

Answers

Answer:

?

Step-by-step explanation:

I think some of the question is missing.

Mr. Tyler buys 4 round-trip tickets from Ft. Lauderdale, Florida, to Toronto, Canada. The total cost is $2,156. How much does each ticket cost? Enter the correct answer in the box

Answers

Answer: $539

Step-by-step explanation:

From the question, we are informed that Mr Tyler bought 4 round-trip tickets from Florida to Canada and that the total cost is $2,156.

The cost of each ticket will then be:

= Total cost of the tickets / Number of tickets

= $2156 / 4

= $539

Therefore, each ticket cost $539

Swim flippers are helpful for scuba
diving. You can rent them daily for
$15 per day, plus 8% tax. How
much will it cost, including tax, to
rent them for three days?

Answers

Answer:

The answer would be $48.60.

Step-by-step explanation:

Some people could probably answer it better but here's my way: When you have a percentage of something you bring it to the decimal. 8% would be 0.08. We take this and multiply it by the cost: 0.08 times 15, giving us $1.2 per $15 dollars spent. 1.2 times the 3 days would be 3.6 and 15 times 3 is 45 together this would give you the grand total of $48.60.

simple question struggling abit :)

Answers

a. x=7 b. y=12 c. f=11/2

What is the percentage population increase if in 2001 it is 430000 and in 2011 it is 510000

Answers

Answer:

18.6%

Step-by-step explanation:

What is the percentage population increase if in 2001 it is 430000 and in 2011 it is 510000

Percentage increase is calculated as:

Final value - Initial value/ Initial value × 100

Final value = 510000

Initial value = 430000

Percentage Increase =

510000 - 430000/430000 × 100

= 80000 / 430000 × 100

= 0.1860465116 × 100

= 18.604651163 %

Approximately = 18.6 %

chris is going on holiday to the united states of america the exchange rate is £1=$1.55 chris has £720 spending money how much does he have in dollars

Answers

Answer:

$1116

Step-by-step explanation:

Given data

We are told that the exchange rate is

£1=$1.55

if chris has £720

then £1 is the same as $1.55

      £720 will be x

cross multiply

x= 720*1.55

x= $1116

what is -2+9 (8) (1/2)​

Answers

Answer:

28

Step-by-step explanation:

-2+9 (4)=7(4)=28

What number will each of these pairs of tiles equal ? (Pls answer :c)

Answers

Answer: 0
You are subtracting each value by itself so there would be nothing left. If it were addition then that would be different

Betty has 25 baseball cards and 10 basketball cards in her sports card collection what is the ratio of baseball cards to basketball cards

Answers

Answer:

25:10

Step-by-step explanation:

Plz give brainliest I wanna level up

Answer: 5:2

Step-by-step explanation:

Parth created a Box-and-Whisker Plot to show the average weight of the fish he caught over the weekend. What information from the 3rd Quartile does the graph give you?



A. Three fourths of the fish he caught were more than 50.5 pounds.
B. The average weight of the fish he caught was 40 pounds.
C. Three fourths of the fish he caught were less than 50.5 pounds.
D. The largest fish he caught was 63 pounds.
Pls i ned hlp

Answers

Answer:

the answer is c srry if i am wrong

Step-by-step explanation:

if you look at it it says 3rd quartile witch it is at the front so it says 50.5

and the rest is less than that so that why i think it is C. pls mark brainliest if ok

Answer:

Step-by-step explanation:

C ;-;

I NEED HELP!!!!!!!!!!!

Answers

The answer is b, because b explains how to get 16x2 - 36.

Carolyn borrowed $38,500 to pay
for college. If the interest rate is
3.2%, how much total will she
have paid after 10 years?

Answers

Answer:

$50820

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 3.2%/100 = 0.032 per year,

then, solving our equation

I = 38500 × 0.032 × 10 = 12320

I = $ 12,320.00

The simple interest accumulated

on a principal of $ 38,500.00

at a rate of 3.2% per year

for 10 years is $ 12,320.00.

may someone pleaseeeeeeeeeeeeee helpppppppp meeeeeeeeeeeeeeee

Answers

Answer:

17 + 15

Step-by-step explanation:

17 + 15. Added to = addition so you add 17 to 15 using the addition sign. I hope this helps!

Follow the order of operations to simplify
1. 60 ÷ 10×3
2. 12 + 3×7
3. 4×3+2×8​

Answers

1. 18
2. 33
3. 28

explain: division first so 6x3
multiply first so 12+21
multiply both then add so 12+16
I think it’s 2 60/30 since it is pemdas parentheses exponents multiplication division add subtract

16x0 + 2x2 • y –1 Evaluate the expression for x = 2 and y = 4.

Answers

Answer:

24

Step-by-step explanation:

0+8*3

This graph shows the relationship between x, the number of hours Mr. David
works, and y, the number of dollars he ears.
Mr. David's Earnings

A. Based on the graph, is the relationship between x and y proportional?
Explain your reasoning
B. What does the point (3,90) represent in the context of this situation?
C. Based on the graph, how many dollars will Mr. David earn if he works
10 hours? Show or explain how you got your answer.
D. Write an equation that could be used to find y, the number of dollars
Mr. David earns for working x hours.

Answers

Answer:

A. Proportional by $30

B. 3 represents the hours he works

    90 represents the money he earned

C. $300

D. I don know, sorry

Step-by-step explanation:

The relationship is linear, the point (3, 90) represents in 3 hours he earns 90 dollars, in 10 hours, he earns 300 dollars, and the linear equation is y = 30x.

What is the linear system?

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

This graph shows the relationship between x, the number of hours Mr. David works, and y, the number of dollars he earns.

A. Based on the graph, the relationship between x and y proportional is a linear relationship.

B. The point (3,90) represents in 3 hours he earns 90 dollars.

D. The linear equation will be

[tex]\begin{aligned} \rm y - 30 &= \rm \dfrac{90-30}{3-1} (x - 1)\\\\\rm y - 30 &= \rm 30x - 30\\\\\rm y &= \rm 30x \end{aligned}[/tex]

C. Based on the graph, the amount of money in dollars will Mr. David earn if he works 10 hours will be

y = 30x

y = 30 × 10

y = $300

More about the linear system link is given below.

https://brainly.com/question/20379472

#SPJ2


find the volume of the cone

Answers

Answer:

132::

Step-by-step explanation:

The power of g00gle <3

Can you help me and explain how to do it? please​

Answers

Answer:

125.6cm

Step-by-step explanation:

circumference of a circle is 2pir

pi=3.14

r=d/2=40cm/2=20cm

So, 2pir=2X20cmX3.14=40cmX3.14=31.4cmX4=125.6cm

PLEASE MAAKE THIS THE BRAINLIEST ANSWER

What is the approximate volume of the cone?

Use 3.14 for π.


57 cm³

339 cm³

509 cm³

1526 cm³
Outline of cone with a dotted line rising from middle of base to the point. Line is labeled 6 cm. A second dotted line extends horizontally from middle of base to its edge. Line is labeled 9 cm.

Answers

Answer:

D is the answer most  likely your answer

Step-by-step explanation:

3.14x81x6=1526.04 which rounding would be 1526cm^3

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