solve the pair of simultaneous equations 2x+1y=7 1x-2x=1​

Answers

Answer 1

Step-by-step explanation:

which which equation you want me to use it to x + y is equal to 7 or 1 x - 2 xis equal to 1

Answer 2
1x-4=5
Yes yes
Yes yes yes

Related Questions

sorry if i am asking a lot, totally suprised by this and dont know what to do and yall are great, i need to find X and Y with exact values and no decimals

Answers

No estoy segura de cuál es la respuesta how no way

Answer:

x and y = 19

Step-by-step explanation:

sin 45/x = sin90/19[tex]\sqrt{2}[/tex]

19[tex]\sqrt{2}[/tex]×sin45=sin90x

x=19

Pythagorean theorem for y

[tex]y^{2}[/tex]=(19[tex]\sqrt{2}[/tex])^2 - 19^2

y^2= 722 - 361

y^2= 361

y=19

The answers seem kinda weird to me so...

Daniel goes out to lunch. The bill, before tax and tip, was $14.20. A sales tax of 8% was added on. Daniel tipped 24% on the amount after the sales tax was added. What was the total cost of the meal, plus tax and tip? Round to the nearest cent.

Answers

Answer: $19.02

Step-by-step explanation:

First find the sales tax paid. It will be paid on the cost of the meal:

= 14.20 * 8%

= $1.14

Then find the tip which was done after the sales tax was added:

= 24% * (14.20 + 1.14)

= 24% * 15.34

= $3.68

The total cost is:

= Gross amount + Sales tax + tip

= 14.20 + 1.14 + 3.68

= $19.02

Find m Find m Find m Find m Find m

Answers

Answer:

I think you have to add those up then divid by 2 if im not mistake.

Step-by-step explanation:i learn this in middle school

Help I dont understand the subject I need to turn this in by tommorow

Answers

Answer:

Actually,I don't understand the que but I will try.

Step-by-step explanation:

Supplementry it means the pair of angle that sum if 180° similarly, complimentry angle sum is 90°

Answer:

A: Complementary, Missing angle -29

E: Complementary, Missing angle -39

J: Complementary, Missing angle - 52

last one: Complementary, Missing angle -66

Hope this helps!

simplify: 4a + 3h + a + 2h
(with the steps please)​

Answers

Answer:

5a+5h

Step-by-step explanation:

4a+3h+a+2h

add all the common factors

5a+5h

then that is your answer because you can not add the other ones because they do not have the same letter but if they were the same letter then you would add them.

Answer:

Step-by-step explanation:

4a + 3h + a + 2h

5a + 3h + 2h  

Solution

5a + 5h

Which statement describes the following expression? 7 x (2,304 x 681)

Answers

Answer:

7 times the value of 2,304 times 681

Step-by-step explanation:

Answer:

it is a

Step-by-step explanation:

hope it helps

5
Find the circumference of the circle. Use 3.14 for the value of
pi. Round your answer to the nearest tenth.
12 ft

Answers

The circumference is 69 my teacher told me she said it was right

Help me PLZ! I’ll give u brainliest!

Answers

Answer:

Step-by-step explanation:

area of card board=(6+4+6+4)×10+2×6×4

=200+48

=248 in²

) Would you rather receive $1,500 a year for 12 years, or $1,200 a year for 20 years if the interest rate is 7%?

Answers

Answer:

$1200 should receive.

Step-by-step explanation:

To check whether to receive $1500 or $1200 just find the present values of each amount.

Present value of annuity $1500:

Present value of annuity = Annuity (P/A, 7%, 12)

Present value of annuity = 1500 (P/A, 7%, 12)

Present value of annuity = 1500 (7.9426)

Present value of annuity = $11913.9

Present value of annuity $1200:

Present value of annuity = Annuity (P/A, 7%, 20)

Present value of annuity = 1500 (P/A, 7%, 20)

Present value of annuity = 1500 (10.5940)

Present value of annuity = $15891

Thus, $1200 should receive.

What value of x is in the solution set of 3(x - 4) ≥ 5x + 2 ?

A. -10

B. .-5

C. 5

D. 10

PLS HELP!!

Answers

Answer:

x ≥ - 7

Step-by-step explanation:

3(x - 4) ≥ 5x + 2

3x - 12 ≥ 5x + 2

3x - 12 + 12 ≥ 5x + 2 + 12

3x - 5x ≥ 5x - 5x + 14

- 2x ≥ 14

- 2x ÷ - 2 ≥ 14 ÷ - 2

x ≥ - 7

each cube is 1.5cm long calculate the surface area
I need this quick ​

Answers

Answer:

13.5

Step-by-step explanation:

6(1.5×1.5)

6(2.25)

13.5

Which of the following statements describes an angle bisector of angle ABC?
heagarty maths

Answers

Answer:

Given an angle ABC, it is possible to construct a line BF that divides the angle into two equal parts using only a straightedge and compass. Such a line is called an angle bisector. ... If we then construct the line BF, it will divide the original angle ABC into two equal angles.

Given an angle ABC, it is possible to construct a line BF that divides the angle into two equal parts using only a straightedge and compass

What is an angle bisector?

An angle bisector or the bisector of an angle is a ray that divides an angle into two equal parts.

Given an angle ABC, it is possible to construct a line BF that divides the angle into two equal parts using only a straightedge and compass.

Such a line is called an angle bisector. ... If we then construct the line BF, it will divide the original angle ABC into two equal angles.

Hence an angle ABC, it is possible to construct a line BF that divides the angle into two equal parts using only a straightedge and compass

To know more about Angle bisector follow

https://brainly.com/question/24334771

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the ratio of 2250 to 2000​

Answers

Answer:

9:8

Step-by-step explanation:

2250/2000

= 225/200

=45/40

=9/8

=9:8

Answer:

Your answer is 9:8

Step-by-step explanation:

Plaese help i was stuck on it for a while

Answers

Answer:

10

Step-by-step explanation:

30x2=60

60/6=10=

b=10

1.8,1.35,2.5, squat root of 5 in least to greatest

Answers

Answer: 1.35, 2.5, 1.8

Step-by-step explanation:

Answer:

Step-by-step explanation:

1) 2.5^=97.6

2) 1.8^5= 18.8

3) 1.35^5=4.4

or

1) 2.50

2) 1.80

3) 1.35

7+2ax =13 solve the equations for x and match the solution

Answers

Answer:

x = 3/a  a cannot equal zero

Step-by-step explanation:

7+2ax =13

Subtract 7 from each side

7-7+2ax =13-7

2ax = 6

Divide each side by 2a

2ax/2a = 6/2a

x = 3/a  a cannot equal zero

PLEASE HELP ME ASAP! THANK YOU

EXPLANATION = BRAINLIEST

The radius of a circle is 4 meters. What is the area of a sector bounded by a 135° arc?

Give the exact answer in simplest form.

Answers

Answer:

The area of the sector of the circle is approximately

Step-by-step explanation:

The given parameters of the circle having a shaded sector are;

The radius of the circle, r = 4 meters

The measure of the arc bounding the sector = 135°

The area of a sector of a circle, 'A', is given as follows;

[tex]A = \dfrac{\theta}{360 ^{\circ}} \times \pi \times r^2[/tex]

Therefore, the area, 'A' of the given sector of the circle, is given as follows;

[tex]A = \dfrac{135 ^{\circ}}{360 ^{\circ}} \times \pi \times (4\ cm)^2 \approx 18.85 \ cm^2[/tex]

The area of the sector of the circle, with radius 4 cm and bounded by an arc, A ≈ 18.82 cm².

any method that uses formulas, figures, or proportions to measure an object Is a(n) ______?

Answers

Answer:

Indirect measurement

Step-by-step explanation:

Choose the equation of the vertical line passing through the point (−2, 3). (5 point)

a
y = 3

b
x = 3

c
y = −2

d
x = −2

Answers

This question would be C. Hope this helps

Please someone explain me why the answer is not B (4k2m3)?

Answers

Hi there!

[tex]4k^2m^3[/tex] is definitely a factor of the the given terms. However, 4 is not the greatest common factor between 8 and 48; it is 8. Therefore, the GCF of the given terms would instead be [tex]8k^2m^3[/tex].

I hope this helps!

Solve this problem in your notebook using all four steps.
A board 60 in. long is cut into two parts so that the longer piece is 5 times the shorter. What are the lengths of the two
pieces?

Answers

Answer:

5x = 5(10) = 50 inches

Step-by-step explanation:

Let x = length of shorter piece  then

5x = length of the longer piece

.

x + 5x = 60

6x = 60

x = 10 inches (shorter piece)

.

Longer piece:

5x = 5(10) = 50 inches

Helllpppppp please

Answers

Answer:

55......................

Answer:

23, 48, 49, 55, 57, 63, 72

after arranging in ascending (or descending) we see the middle term and in this case, 55 is the middle number of the data and hence,

55 is the median

Hope this helps! have a great day ahead! :D

Which graph represents the inequality x ≤ 7?

Answers

Answer:

I'm pretty sure it is D

Step-by-step explanation:

sry if I am wrong

The fourth graph is representing the inequality x ≤ 7, so option D is correct.

What is inequality?

Inequalities specify the relationship between two values that are not equal. Equal does not imply inequality. Typically, we use the "not equal sign" to indicate that two values are not equal.

Given:

The inequality = x ≤ 7,

As this inequality representing the value of x is less than 7 or can be equal to 7, In this graph

Option D is representing the inequality, as the graph is suggesting x can be equal to 7 or less than 7.

Therefore, the fourth graph is representing the inequality x ≤ 7.

To know more about inequality:

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An experience bricklayer can construct a small wall in 3 hours. An apprentice can complete the job in 5 hours. Find how long it takes if they work together. Show work.

Answers

Answer:

Step-by-step explanation:

If the bricklayer can construct the wall in its entirety in 3 hours, then he can get 1/3 of the job done in an hour.

If the apprentice can get the whole job done in 5 hours, then he can get 1/5 of the job done in an hour. If they both work together on said job, the equation is

[tex]\frac{1}{3}+\frac{1}{5}=\frac{1}{x}[/tex] and now we solve for x. Multiply everything by the LCM to get rid of the fractions. That would be 15x:

[tex]15x(\frac{1}{3}+\frac{1}{5}=\frac{1}{x})[/tex] and doing that gives us

5x + 3x = 15 and

8x = 15 so

x = 1.875 hours which is 1 7/8 hours which is also 1 hour and 52 1/2 minutes.

Jacob earns $5 for each hour of yard work. Write an equation that shows the relationship between the time spent x and the amount earned y.

Answers

Answer:

x = 5 y = 25

x = 10 y = 50

Step-by-step explanation:

marking BRAINLIEST

line with a slope of 2 passes through the point located at (-1,-2) plot two points that line on this line andbhave integer coordinates.

Answers

y=2x

(0.5, 1)

(2, 4)

(-2, -4)

Solve for k:
0.8k - 20 = -60

Answers

Answer:

k = -50

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify

0.8k - 20 = -60

Step 2: Solve for k

[Addition Property of Equality] Add 20 on both sides:                                  0.8k = -40[Division Property of Equality] Divide 0.8 on both sides:                              k = -50

Answer:

k = - 50

Step-by-step explanation:

0.8 k - 20 = - 60

Add 20 to each side

0.8 k - 20 + 20 = - 60 + 20

0.8 k = - 40

divide each side by 0.8

0.8 k / 0.8 = -40 / 0.8

k = - 50

can someone help me please !!

Answers

ohh I THIBK WE R IN THE SAME TEST

Answer:

So if you take the diameter of the quotion of the Additional caustxof being to pig it is between 1 and 908

The half-life of a radioactive kind of protactinium is one minute. If you start with 88 g of it, how much will be left over after two minutes?

Answers

This is my workings

Answer:

22 grams

Step-by-step explanation:

Divide the number of minutes by the half life...    2/1=2

Multiply starting amount by one-half (1/2) a total of the number of half-lives that have passed. ( 2 half lives in our case)

88 * 1/2 *1/2 = 22 grams     also written as 88(1/2)^2

I really need help:(

Answers

Answer:

1. e

2. c

3. d

4. a

5. b

Step-by-step explanation:

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