Solve the system of equations by substitution method

y=2x-1/2
2x-3y=4

Enter your answer, as decimals, in the boxes

( , )

Thank you!!

Answers

Answer 1

( - 0.625, - 1.75 )

so since the first equation is already simplified , just replace it in the second equation


Related Questions

If the domain (or pre-image) of a function that is translated up 5 is (-1, 8), (-2,4), (-1, -7), what is
the range (or image)?

Answers

Answer:

The image of the given points after the translation is;

(-1,13) , (-2,9) and (-1,-2)

Step-by-step explanation:

By translating vertically to the tune of 5 units, what we have done is to add 5 units to the y-axis value

so for (-1,8); it will become (-1, 8 + 5) = (-1,13)

for (-2,4); it will become (-2,4 + 5) = (-2,9)

for (-1,-7); it will become (-1,-7+ 5) = (-1,-2)

Find The Missing Lenght of the right triangle. Round to The Nearest

Answers

Answer:

b ≈ 8.49

Step-by-step explanation:

A^2 + b^2 = c^2.   (Pythagorean theorem)

c is the hypotenuse or the longest side of a triangle.

a and b are the other 2 sides.

17^2 + b^2 = 19^2

289 + b^2 = 361

289 + b^2 - 289 = 361 - 289

b^2 = 72

b ≈ 8.49

Have a great day!

Find the fifth term when a1=4 and r=-3

Answers

Answer:

a₅ = 324

Step-by-step explanation:

The nth term of a geometric sequence is

[tex]a_{n}[/tex] = a₁ [tex]r^{n-1}[/tex] then

a₅ = 4 × [tex](-3)^{4}[/tex] = 4 × 81 = 324

-4x + 1 = -11
how do i solve this​

Answers

Answer:

3

Step-by-step explanation:

- 4x + 1 = - 11

- 4x = - 11 - 1

- 4x = - 12

x = - 12 / - 4

x = 3

Answer:

-4X+1=-11

-4x=-11-1

-4x=12

x=12/4

x=3

Which is not a pair of congruent sides in the diagram below?
EF and JH
EK and GH
KJ and JH
KJ and FG

Answers

KJ and JH because all of the rest are congruent except KJ and JH
kJ and jh are not congruent

What is the value of x?



Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth.

x =
m

A scalene triangle U V W. Side U V is labeled as 19 meters. Side U W is labeled as x. Angle U is labeled as 81 degrees. Angle V is labeled as 30 degrees.

Answers

Answer:

x = 10.2 m

Step-by-step explanation:

law of sines:

sin 30° / x = sin 69° / 19

cross-multiply:

.5(19) = sin 69°x

x = .5(19) / sin 69°

x = 9.5/.934

x = 10.2

The value of x with the help of sine law is 10.2 units.

What is Sine Law?

Law of sines defines the ratio of sides of a triangle and their respective sine angles are equivalent to each other. The other names of the law of sines are sine law, sine rule and sine formula.

Here, Law of sines:

[tex]\frac{Sin A}{a} =\frac{Sin B}{b} = \frac{Sin C}{c}[/tex]

sin 30° / x = sin 69° / 19

1/2x =  sin 69° / 19

cross-multiply:

19/2 = sin 69°x

x = 9.5 / sin 69°

x = 9.5/0.934

x = 10.2

Thus, the value of x with the help of sine law is 10.2 units.

Learn more about Sine Law from:

https://brainly.com/question/17289163

#SPJ2

A plane is travelling at 180 metres per second. How many minutes will it take for the plane to travel 800km? Give your answer in the nearest minute.

Answers

Answer:

79 minutes

Step-by-step explanation:

A plane is travelling at 180 meters per seconds

Convert to km/hr

180× 18/5

= 648 km/hr

Since 648 km equals 1 hour then the number of minutes required for the plane to travel 800 km is

= 1/648 × 800

= 1 hour 19 minutes

Conver the time to full minutes

60 minutes = 1 hour

= 60+19

= 79 minutes

Hence the minutes required for the plane to travel 800km is 79 minutes

Read the word problem below.

Antonio has a total of 55 marbles. He has 15 green marbles and 12 red marbles. The rest of the marbles are blue. How many blue marbles does he have?

A student solves this problem by writing an equation. Which strategy could help check the student’s answer?

a) Check that the sum of the final answer, 12, and 15 is 55.
b) Check that the difference of 55 and the final answer is 12
c) Check that the sum of the final answer, 27, and 15 is 55.
d) Check that the difference of 55 and the final answer is 15.

Answers

Answer:

27 are blue  C.

Step-by-step explanation:

Directions: Find the odds and the probability of the event(s) occuring.
There are six boys and eight girls in a
class. The teacher randomly selects one
student to answer a question. Later, the
teacher randomly selects a different
student to answer another question. The
first student is a boy and the second
student is a girl.
P(boy then girl) =
Odds =

Answers

Answer:

12/49

Step-by-step explanation:

HELP ASAPPPPP PLEASEE

Answers

Answer:

A, B, B, A.

Step-by-step explanation:

The corner is 90 degrees. Therefore it has one right angle and is right. An isosceles triangle has 2 sides of equal length.

Answer:

abba.

Step-by-step explanation:

ksksskskwkwrandommmmmm

samuel can do 9 word problem s in 25 minutes at this rate about how many word problem can he do in 42 minutes​

Answers

Answer:

15 word problems

Step-by-step explanation:

Given that

Samuel can do 9 word problems in 25 minutes

So we need to find out how he can do the word problems in 42 minutes

The calculation is given below;

= 9 × 42 minutes ÷ 25 minutes

= 15.12

= 15 word problems

Hence, the same would be considered and relevant

Which of the following rational numbers is closest to V7 ?
2.1
2.5
2.6
3.5

Answers

2.6

Explanation:

The square root of 7 is 2.6 .
It is 2.6 I took the test already and got 100

find 18.2% of 25000
please and fast I'm in assessment​

Answers

Answer:

4550

Step-by-step explanation:

Answer:

Step-by-step explanation:

18.2% of 25000 = 4550

Ronaldo can kick a soccer ball 35 meters per second which is about 80 mph. He kicked the ball from one end of the field to the other. The Field is 110m long. How long does the ball take to get from one end of the field to the other if it traveled at the same speed the entire time?

Answers

Answer:

[tex]t=3.142sec[/tex]

Step-by-step explanation:

From the question we are told that:

Speed of ball [tex]V=35m/s\approx 80 mph[/tex]

Length of field [tex]l=110m[/tex]

Generally the equation for Time taken [tex]t[/tex] is mathematically given by

 [tex]t=m/V[/tex]

 [tex]t=110/35[/tex]

 [tex]t=3.142sec[/tex]

 [tex]t \approx \frac{3.142}{60}[/tex]

 [tex]t \approx 0.05hrs[/tex]

Therefore it will take the ball to get from one end of the field to the other

[tex]t=3.142sec[/tex]

Determine the value of y, if x is 7.
y = x2 - 1

Answers

Answer:

13

Step-by-step explanation:

If x is 7, then 7 * 2 = 13, and 14 - 1 = 13.

Hope that this helps!

13 because if you plug in 7 y=7(2)-1 then do 7x2 and then it would be 14-1 so 13

Which function in vertex form is equivalent to f(x) = x2 + x +1?
5
ORX) = (x + 4+1
RX) = (x + 1) +
ORX) = (x + 1) +
O Rx) = (x + 1) +
3
5

Answers

Answer:

3rd option is correct

Step-by-step explanation:

:)

The vertex form of the equation is [tex]f(x) = (x+1/2)^2 + 3/4[/tex]

Vertex form of an equation

Given the expression [tex]f(x) = x^2 + x +1[/tex]

The vertex form is expressed as shown below:

[tex]f(x) = x^2 + x +1\\f(x) = x^2 + x + 1^2 +1 - 1^2\\f(x) = (x+1)^2 - 0[/tex]

Express the result in vertex form.

[tex]f(x) = (x+1/2)^2 + 3/4[/tex]

Hence the vertex form of the equation is [tex]f(x) = (x+1/2)^2 + 3/4[/tex]

Learn more on vertex form here: https://brainly.com/question/525947

What is the radius of D?

Answers

Answer:

[tex]\huge\colorbox{pink}{✏﹏ \: 3 cm\: }[/tex]

Step-by-step explanation:

Diameter (d) = 6 cm

Radius (r) = ?

[tex]r = \frac{d}{2} \\ r = \frac{6}{2} \\ r = 3 \:cm[/tex]

⋆┈┈。゚❃ུ۪❀ུ۪❁ུ۪❃ུ۪❀゚ུ۪。┈┈⋆

In ΔJKL, the measure of ∠L=90°, the measure of ∠J=25°, and KL = 26 feet. Find the length of LJ to the nearest tenth of a foot.

Answers

Answer:

55.8 feet

I hope this helps people

What would this expression be when simplified

Answers

Answer:

The first one is the answer

Step-by-step explanation:

A line segment passing through the centre of the circle and
having its two end points on
the circle is called

Answers

Answer:

Diameter

Step-by-step explanation:

Diameter a line segment passing through the centre of a circle and having its endpoints on the circle is called a diameter of the circle.

A community pool charges $78 for swim lessons and a $2 towel rental fee per day. At the end of the summer Yolanda spends $102. How many days did Yolanda go for swim lessons?

Answers

Answer: 12 days

Step-by-step explanation:

Given

A community pool charges $78 for a swim lesson and $2 for a towel each day

Suppose Yolanda attended the session for x days

So, we can write the total fees of $102 as

[tex]\Rightarrow 102=78+2x\\\Rightarrow 2x=102-78\\\\\Rightarrow x=\dfrac{24}{2}\\\\\Rightarrow x=12[/tex]

So, Yolanda attended the swim lessons for 12 days

What is the range of y= x + 2?

Answers

Answer:

A) all real numbers greater than or equal to 2

Domain: [tex]x\geq 0[/tex]

Step-by-step explanation:

The variable in the radical x cannot be less than 0 as that wouldn’t be defined. So, the maximum that x can be is 0, and [tex]y=x+2[/tex]. So, 0+2=2, and y is greater than or equal to 2.

Domain is x is greater than or equal to 0 because you cannot square a negative. So, it must not be less than 0. It could be 0 because square root of 0 is just 0.

*6 sided die*
*Bag with 2 red marbles, 2 yellow, 2 green, 1 blue, and 1 purple*

A die is rolled and marble is selected from the bag shown. Find each probability.
HINT: These events are independent.

a) P(even number and yellow) = ___
1. 1/8
2. 5/14
3. 1/14
4. 1/16

b) P(odd number and not green) = ___
1. 5/14
2. 3/8
3. 1/8
4. 9/14

c) P(1 and red) = ___

d) P(3 and purple) = ___

PLEASE HELP!!

Answers

Answer:

Step-by-step explanation:

P(even + yellow)

P(even) = 3/6 (2 , 4,  6)

P(yellow) = 2/8

P(both) = 3/6 * 2/8

P(both) = 1/2 * 1/4

P(both) = 1/8

Odd number = 3/6

Not green = 6/8

P(Both) = 1/2 * 3/4 = 3/8

P{1 and red )

P(1) = 1/6

P(red) = 2/8

P(Both) = 1/6 * 1/4 = 1/24

P(3) = 1/6

P(Purple) = 1/8

P(both) = 1/6 * 1/8 = 1/48

Cecilia has the shirts indicated in the table.
Color
Pink
White
Black
Blue
Number of Shirts
3
1
4
4
Cecilia will randomly choose one shirt and then put it back in her closet. Then she will
randomly choose another shirt. What is the probability that she will choose a black shirt
and then a pink shirt?

Answers

Answer:

it is H

Step-by-step explanation:

4-3 is 1 and there is 12 total objects so it is 1/12


Mackenzie substituted the measurements of a cone into the formula to find the surface area. Her work is shown below.
SA= pi(9.5)(18)+ pi(9.52)
What can be concluded from Mackenzie's equation? Check all that apply.
The slant height is 9.5 units.
The diameter is 19 units.
The base area is 90 25 pi square units
The lateral surface area is 153 square units
The surface area is 261.25 pi square units

Answers

Answer:

if needed still, the correct answers are B, C and E.

Step-by-step explanation:

good luck!

Given the following kite find:

Answers

Answer:

63

Step-by-step explanation:

90+13x+1+28x+7=180

98+41x=180

41x=82

x=2

Plugging in the value of x, we get:

28x+7=28(2)+7=56+7=63

Help out aaaaaaaaaaaaa

Answers

Answer:

y= -x

Step-by-step explanation:

same deal

-x+b=y

5= -(-5)+b

5= 5+b

b=0

The answer is y= -x
Hope this helps :)

What is the probability of spinning a number greater than 4 or an odd number?

Answers

Answer:

3/5 will be greater than 4 while 1/2 will be an odd number.

Can someone help me???

Answers

Answer:

91 cm squared

Step-by-step explanation:

13 x 7 = 91

Answer: 77

Step-by-step explanation:

13 × 7 - (4 × 3) - (2 × 1)

Have a good day :)

There are some dogs and some ducks walking in a park. Aiden counts the animals and says, “There are 30 animals in this park!” Chloe counts their legs and says, “They have a total of 84 legs!” How many ducks are in the park?

Answers

Answer:

13

Step-by-step explanation:

13

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