2x +y =4 and 5x + 4y = 7

Answers

Answer 1
x=2-y/2 for the first problem
y=4-2x for the first problem

x=7/5-4y/5 for the second problem
y=7/4-5x/4 for the second problem

Related Questions

(brainliest for correct answer) write an equation in slope/intercept.

Answers

Answer:

y=-2x+2

Step-by-step explanation:

What is the length of side AD?

Answers

It’s not 10, 11 or 14, so it’s 16

compare the graph of g(x)=6x−5 to the graph of f(x)=6x
a. g(x) shifted up 5 units
b. g(x) shifted down 5 units
c. g(x) is 6 units steeper
d. f(x) shifted down 5 units

Answers

Answer:

D

Step-by-step explanation:

Here, we want to compare the graph of g(x) and f(x)

Looking at the given equations, the difference between the two is that we have 5 subtracted from one of the equations

What this means is that we are moving down 5 units away from the graph of f(x) to get the graph of g(x)

Thus, option D is the correct answer

Factorise y² + 5y-84​

Answers

Answer:

(y-7) (y+12)

Step-by-step explanation:

Factor y2+5y−84y2+5y-84 using the AC method.

HELP! Dont judge i really do need help!

Answers

Answer:

A.

Step-by-step explanation:

The coordinates are currently on the top left, which means one of the coordinates are negative. If you look at the chart, you can see that the X-axis is negative, and X is first on a coordinate plane. (X,Y) So, if the negative coordinate is X, and X goes first, then there's no other choice than to choose A, which is the only answer choice that has a negative X-axis in their coordinate plane! Hope this helps!

Helppppppp circle theorems

Answers

Answer:

m=14°, n=28°

Step-by-step explanation:

Angles in a Circle

The central angle is formed between two radii and its vertex at the center of the circle.

An inscribed angle is formed between two chords whose vertex lies on the circumference of a circle.

The measure of the central angle a formed by the same lines that form an inscribed angle b is:

a = 2b

This means the angle of a = 98° is double of the inscribed angle of 35°+m:

98 = 2(35 + m)

Dividing by 2:

49 = 35 + m

Solving for m:

m = 49 - 35 = 14

m = 14°

Angles m and n are also formed by the same lines, and:

n = 2m

Thus:

n = 28°

Answer: m=14°, n=28°

in standard form is 63,029

Answers

60,000 + 3,000 + 20 + 9

Answer:

60000 + 3000 + 29

Step-by-step explanation:

The Standard form of 63029 is

60000 + 3000 + 29

-TheUnknownScientist

Please can I have an explanation also, I am terrible at these kinds of questions!

Q- A bag contain red, yellow and blue beads.

The ratio of red beads to yellow beads is 2:3
The ratio of yellow beads to blue beads is 5:4

Work out what fraction of the beads are red.

Answers

Answer:

The fraction of the beads that are red is

Step-by-step explanation:

Algebraic Expressions

A bag contains red (r), yellow (y), and blue (b) beads. We are given the following ratios:

r:y = 2:3

y:b = 5:4

We are required to find r:s, where s is the total of beads in the bag, or

s = r + y + b

Thus, we need to calculate:

[tex]\displaystyle \frac{r}{r+y+b} \qquad\qquad [1][/tex]

Knowing that:

[tex]\displaystyle \frac{r}{y}=\frac{2}{3} \qquad\qquad [2][/tex]

[tex]\displaystyle \frac{y}{b}=\frac{5}{4}[/tex]

Multiplying the equations above:

[tex]\displaystyle \frac{r}{y}\frac{y}{b}=\frac{2}{3}\frac{5}{4}[/tex]

Simplifying:

[tex]\displaystyle \frac{r}{b}=\frac{5}{6} \qquad\qquad [3][/tex]

Dividing [1] by r:

[tex]\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+y/r+b/r}[/tex]

Substituting from [2] and [3]:

[tex]\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+3/2+6/5}[/tex]

Operating:

[tex]\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{\frac{10+3*5+6*2}{10}}[/tex]

[tex]\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{10+15+12}[/tex]

[tex]\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{37}[/tex]

The fraction of the beads that are red is [tex]\mathbf{\frac{10}{37}}[/tex]

If each container holds 2 L 255 mL of water, how much water would be in 609 identical
containers? Find the difference between the two numbers, then explain how you got
your answer (which strategy you used and how you knew that one would work).

Answers

Answer:

one cup is bigger

Step-by-step explanation:

j
= 1 + sin cos
sin'0 - cos'
sin - cos
PLE
i.
(sec X - tan xy
- Sin x
1 + sin x
1.
1 * sin - sine
1 - cos
= (cot - cosec )
1 + cos e
k.
cos
cos​

Answers

Answer:

type question correctly

Step-by-step explanation:

I will help you

On Saturday, many tickets fir a hockey game were sold. Children and adult were in the ratio of 4:7. There are 88 tickets in total. How many adult tickets were sold?

Answers

Answer:

56 adult tickets were sold

Step-by-step explanation:

Ratio of ticket sold to Children and adult is in the ratio 4 : 7

Total ratio = 4 +7 = 11

Ratio of adult = 7

Total ticket sold = 88

Number of adult tickets sold = Ratio of adult/Total ratio * Total ticket sold

Number of adult tickets sold = 7/11 * 88

Number of adult tickets sold = 7 * 8

Number of adult tickets sold  = 56 tickets

Hence 56 adult tickets were sold

plz answer asap only if you are correct!

Answers

Answer:

i am correct :))))))))))) hope this helped

Y=-x+3/2 mathematics question that idk the answer to

Answers

Answer:

Y = 1.50000

X = 1.50000

I don't understand the question, hopefully this is what you are looking for.

#LearnWithBrainly

Writer the equal ratios 6:8,24:32,3/4:1

Answers

Answer:

12:16

48:64

3:4

12:16

48:64

3:4

Are your answers

The golden ratio is a solution to a quadratic equation.

a. Find the precise value for Φ by solving Φ2 − Φ − 1 = 0.

b. Which method of solving a quadratic equation did you use? Explain your reasoning.

c. What type of number is Φ? Why can it only be approximated by a decimal value?

Answers

Answer:

Below.

Step-by-step explanation:

a.    Φ^2 − Φ − 1 = 0

Φ2 − Φ = 1

(Φ - 0.5)^2 - 0.25 = 1

(Φ - 0.5)^2 = 1.25

Φ - 0.5 = √(1.25)      (We only take the positive root).

Φ  = 0.5 + √(1.25)

b. I used Completing the square.

c.  Φ is irrational That is it cannot be represented as a fraction a/b and because of this it can only be approximated by a decimal.

Please answer this question I can't seem to figure it out I have even asked my parents.

Answers

Answer:

j. Pam, Tia, Veronica, Lily (if it's youngest to oldest)

Step-by-step explanation:

If Tia is 8 yrs old and she's 2 yrs older than Pam, then Pam must be 6 yrs old. Pam si 5 yrs younger than Veronica who must be 11 + 4 = 15.

Tia: 8 yrs.

Veronica: 11 yrs

Pam: 6 yrs.

Lily: 15

Answer: from youngest to oldest it’s Lily, Veronica, Tia, then Pam

Step-by-step explanation:

Tia being 8, Pam is 6, Veronica is 11 and Lily is 15

Mario spent $23.85 at the bookstore on one book and some magazines. The book cost $12.60 and the magazines cost $2.25 each. How many magazines did Mario buy?

Answers

Answer:

Mario brought 5 magazines

Step-by-step explanation:

If you just add $12.60 and $2.25 together then keep adding $2.25 until you get to $23.85, you'll get your answer.

So like,  

(1) 12.60 + 2.25 = 14.85

(2) 14.85 + 2.25 = 17.1

(3) 17.1 + 2.25 = 19.35

(4) 19.35 + 2.25 = 21.6

(5) 21.6 + 2.25 = 23.85  

So the total would be 5. Mario bought 5 magazines.

Please help I need this ASAP

Answers

Answer:

Yes, by SSS

Step-by-step explanation:

They are touching by their hypotenuses in the middle (they are sharing a hypotenuse).  

NP is the corresponding side for QM.  Their measures are both 10.

MN is corresponding to PQ, and both sides equal 18.

i need help with thissss

Answers

Answer:

#4 is option one 18 miles

Step-by-step explanation:

What is the equation in point slope form of the line that passes through the point (1 , 8) and (2 , 10)?
y-8=2(x-1)
y+8=2(x+1)
y=2x-7
2x-y=7

Answers

First find slope
(10-8)/(2-1) = 2/1 = 2
Point slope form: y-y1 = m(x-x1)
Answer: y-8 = 2(x-1)

Each polio vaccination consists of 4 doses, and each measles vaccination consists of 2 doses. Last year, Dr. Potter gave a total of 606060 vaccinations that consisted of a total of 184 doses. How many polio vaccinations and how many measles vaccinations did Dr. Potter give last year?

Answers

I think there is a little error in your question. I guess You mean 60 vaccinations instead of 606060. I solved using 60 vaccinations.

Answer:Dr. Potter gave 32 polio vaccines and 28 measles vaccinations that year.

Step-by-step explanation:

STEP 1

Let number of polio vaccines be x

and number of measles vaccine be y

such that

total does of 60 vaccinations be expressed as

x+y = 60---- equation 1

And number of doses for both  vaccine to total 184 doses taken be expressed as

4x + 2y= 184 ---- equation 2

Step 2--- solving

x+y = 60---- equation 1

4x + 2y= 184 ---- equation 2

Making x the subject of formula in equation 1 and substituting it in equation 2

x= 60-y

4(60-y) +2y- 184

240-4y+2y=184

240-184= 4y-3y

56= 2y

y= 58/2 = 28

To get x , put the value of y=28 in equation 1 and solve

x+y=60

x=60-28

x=32

Therefore Dr. Potter gave 32 polio vaccines and 28 measles vaccinations that year.

A car travels at a constant speed of 45 km per hour for 5 min each wheel has a radius of 25 centimeters calculate the number of complete revolutions that the wheel makes in 5 min

Answers

Answer:

477.47 revolutions

Step-by-step explanation:

From the information given:

The formula for calculating the circumference = 2π r

Given that the radius of each wheel = 25 centimeter

Then, the circumference = 2 π (25)

= 50π cm

The distance traveled in 5 minutes is as follows:

Given that:

The speed = 45 km/ hour

i.e.

1 hour = 45 km

In an hour, we have 60 minutes

So, 60 minutes = 45 km

1 minute = 45/60 = 0.75 km

To cm;

0.75 km = (0.75 × 1000) m = 750 m

750 m = 750 × 100 = 75,000 cm

The number of revolution in 5 minutes sInce 1 revolution =  50π cm is:

=  75,000 cm/ 50π cm

= 477.47 revolutions in 5 minutes

At a football game, you bought
x hot dogs for $2.50 each and x candy bars
for $1.50 each. If admission cost $8.50,
write an expression in simplest form that
represents the total spent at the game.

Answers

Answer:

[tex]y=4x+8.5[/tex]

Step-by-step explanation:

[tex]b=8.5[/tex]      the initial cost is $8.5

[tex]m=2.5+1.5[/tex]    the price changes by $4 for every hotdog & candy bar purchased

The final equation is    [tex]y=4x+8.5[/tex]

Answer:

$12.00

Step-by-step explanation:

$8.50 + $2.50 = $10.00 + $1.50 = total $12.00

5(x + 4) help plssssss

Answers

Answer:

5x + 20

Step-by-step explanation:

5(x +4)

= 5x + 20

multiply x + 4 by 5

Which fraction is represented by point A on the number line?
0
A
O-1
win W
1
3

Answers

Answer:

B

Step-by-step explanation:

it is

It’s B.
Because as u can see the line stops at -1. And A looks 1/3 away from from it so therefore it’s -1/3

triangles ABC and LMN are congruent according to which of the following congruence criteria?

O Angle Side Angle congruence criteria
O Side Side Angle congruence criteria
Side Angle Side congruence criteria
O Side Side Side congruence criteria

Answers

Answer:

Side Side Side congruence criteria

Step-by-step explanation:

As per diagram, the triangles have 3 congruent sides:

AB≅LMAC≅LNBC≅MN

So they are congruent by SSS criteria

The difference between 6 times a number and 10 is 32. Find the number. (I also need the equation)

Answers

the equation :

6x - 10 = 32

the number

x = 7
The number is 7!

Equation:
6n-10=32

If cot theta is greater then 0 or sin theta is smaller than 0 then terminal arm of an angle lies in quadrants

Answers

Answer:

4th quadrant

Step-by-step explanation:

Given that:

cot θ > 0  or  sin θ < 0

[tex]cot \theta = \dfrac{1}{tan \theta}[/tex]

where;

[tex]tan \theta = \dfrac{sin \theta}{cos \theta}[/tex]

If [tex]cot \theta = \dfrac{cos \theta}{sin \theta}>0[/tex] or sin θ < 0, then the terminal arm of the angle lies in the 4th quadrant

Abby spent 22 minutes working on her science project yesterday 34 minutes working on today. how many minutes did Abby spend working on her science project altogether

Answers

The number of minutes that Abby spend working on her science project altogether is 56 minutes.

How to calculate the value?

From the information, Abby spent 22 minutes working on her science project yesterday and 34 minutes working on today.

Therefore, the time used altogether will be the addition of the time used for both occasions

= 22 minutes + 34 minutes

= 56 minutes

This illustrates addition.

Learn more about time on:

brainly.com/question/26046491

#SPJ1

list the angles in order from the largest to the smallest and explain

Answers

Answer:

The correct answer is= ASolutionAngle A is opposite to side BCAngle B is opposite to side CAAngla C is opposite to side BCIn triangle, the largest angle will be opposite the largest side. So Angle A is the largest angle.Angle B is the second largest and Angle C is the smallest.
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