Solve each system using substitution. Check your answer
x+3=y
3x+4y=7

Answers

Answer 1

Answer:

x = -5/7

y = 16/7

Step-by-step explanation:

3x + 4y = 7

3x + 4(x+3) = 7

3x + 4(x) + 4(3) = 7

3x + 4x + 12 = 7

7x + 12 = 7

7x + 12 - 12 = 7 - 12

7x = -5

7x ÷ 7 = -5 ÷ 7

x = -5/7

---------------------------------------

x + 3 = y

(-5/7) + 3 = y

16/7 = y

-----------------------------------------

3x + 4y = 7

3(-5/7) + 4(16/7) = 7

-15/7 + 64/7 = 7

7 = 7

Answer 2

The required value of the x and y by substitution method is -5/7 and 16/7 respectively.

Given,
System of equation
x+3=y
3x+4y=7

To solve using the substitution method.

What is the equation?

The equation is the values of two functions  that are equal.

What are functions?

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.

x + 3 = y - - - - -(1)
3x + 4y = 7 - - - -(2)

from equation 1 substitute y in equation 2

3x + 4( x +3 ) = 7
3x + 4x + 12 = 7
7x = 7 - 12
7x = -5
x = -5/7
put this x on equation 1
-5/7 +3 = y
y = 16/7

Thus the required value of the x and y by substitution is -5/7 and 16/7 respectively.

Learn more about equation here:
https://brainly.com/question/10413253

#SPJ2



Related Questions

Compare multiplying a number by 3 and by 1 third. *

Answers

Answer:

Multyplying by 1 third is the same as dividing by 3, so it's the opposite as multiplying by 3.

In ΔRST, the measure of ∠T=90°, the measure of ∠R=56°, and ST = 73 feet. Find the length of TR to the nearest tenth of a foot.

Answers

Answer:

49.2

Step-by-step explanation:

use the volume formula to find the volume of the prism

Answers

The formula for the volume of a prism is V=Bh , where B is the base area and h is the height. The base of the prism is a rectangle. The length of the rectangle is 9 cm and the width is 7 cm.

is there any answer choices

£100 is divided between Fiona, Pip and Sara so that Fiona gets twice as much as Pip, and Pip gets 3 times as much as Sara. How much does Pip get?

Answers

Step-by-step explanation:

if pip gets x

sarah gets x/3

fiona gets 2x

so x+x/3 +2x=100

10x/3=100

x=30

awnser with explanination no fake awnsers or reported

Answers

Answer:

D,

okie dokie yoo

If the length of a side of a square is increased from 4 to 8, which of the following statements is true?

A.) Both area and perimeter are doubled.
B.) Both the area and perimeter are quadrupled.
C.) The perimeter is doubled and the area is quadrupled.
D.) The perimeter is quadrupled and the area is doubled.

Answers

Answer:

C.) The perimeter is doubled and the area is quadrupled.

Step-by-step explanation:

Original square: side = 4

Area = side^2 = 4^2 = 16 square units

Perimeter = 4 * side = 4 * 4 = 16 units

Larger square: side = 8

Area = side^2 = 8^2 = 64 square units

Perimeter = 4 * side = 4 * 8 = 32 units

Comparison of areas:

(larger square area)/(original square area) = 64/16 = 4

Comparison of perimeters:

(larger square perimeter)/(original square perimeter) = 32/16 = 2

Answer:

C.) The perimeter is doubled and the area is quadrupled.

The ratio of raspberries to strawberries is 1:7. If there
are 147 strawberries, how many raspberries are
there?

Answers

Answer:

21 RASBERRIES

Step-by-step explanation:

THERE ARE 147 STRAWBERRIES.

THE RATIO OF RASBERRIES TO STRAWBERRIES ARE 1:7

THEN,

THE AMOUNT OF RASBERRIES ARE 1/7 TIMES OF THE STRAWBERRIES.

SO,THERE ARE (147×1/7) or,21 RASBERRIES.

SO THE ANSWER IS: THERE ARE 21 RASBERRIES...

A movie theater sell snacks to 30% of it's customer each day. On Saturday, 186 customers bought snacks. How many customers went to the theater on Saturday????

A. 242
B. 520
C. 558
D. 620

Answers

Answer:

620 or D

Step-by-step explanation:

Answer:

620/D I believe........

3a≥ -6
solve for a
PLEASE

Answers

Answer: Divide each term in 3 a ≥ − 6 by 3 . 3 a 3 ≥ − 6 3 Cancel the common factor of 3 . Tap for more steps... a ≥ − 6 3 Divide − 6 by 3 . a ≥ − 2 The result can be shown in multiple forms. Inequality Form: a ≥ − 2 Interval Notation: [ − 2 , ∞ )

Find the length of AB.
00240°
AB = [? ]m
140°
8 m
B
Round your answer to the nearest hundredth.

Answers

Answer:

19.54 m

Step-by-step explanation:

[tex]l(\widehat {AB}) = \frac{ \theta}{360 \degree} \times 2 \pi r \\ \\l(\widehat {AB}) = \frac{140 \degree}{360 \degree} \times 2 \times 3.14 \times 8 \\ \\ l(\widehat {AB}) = \frac{7}{18} \times 2 \times 3.14 \times 8 \\ \\ l(\widehat {AB}) = \frac{351.68}{18} \\ \\ l(\widehat {AB}) = 19.5377778 \\ \\ l(\widehat {AB}) \approx 19.54 \: m[/tex]

Solve for k.
10
1323
3
9
CAN U HELP PLEASE

Answers

Answer:

Step-by-step explanation:

k/9=10/3 multiply both sides by 9

k=90/3

k=30

Answer:

Hello

[tex] \frac{10}{3} = \frac{k}{9} \\ 10 \times 9 = 3k \\3 k = 90 \\ k = 90 \div 3 \\ k = 30[/tex]

hope it helps

Have a nice day

Answer Please !

Choose The Correct Reason

{Answer Boxes are similar to all questions :
A: Base angles of an isosceles triangle are congruent
B: Given
C: Def. of an isosceles triangle
D: AA Similarity Theorem
E: Substitution property}

(Question 1 )
Reason 1

(Question2)
Reason 2 < type you’re answer From Answer Boxes>

(Question 3)
Reason 3

(Question 4)
Reason 4

(Question 5)
Reason 5

(Question 6)
Reason 6

Answers

the answer is B i just did it
Your answer should be answer B

Line segments AB and CD are both part of the dame non-vertical line,and the slope of line segment AB is 6, hsing similar triangles,what can you show the slope of line segment CD to be?
A. -6
B. -1/6
c. 1/6
d. 6​

Answers

Answer:

6

Step-by-step explanation:

Can someone solve this

c - 25 - (-13)

Answers

Answer:

c−12!

Step-by-step explanation:

Use Cymath on g0ogle for other math questions so you don't waste your points!

Answer:

=c - 12

Step-by-step explanation:

Which number line shows the solution of 5x - 25 < -15?
A.
-100 B 7 B
.
43
-2
.1
12
3 4 5 6 7 8 9 10
B.
-10.9 7 6 5 4 3 2
-1 0
1 2
3
4 5
6 7 8 9 10
O
20 -19 - 18 - 17 -16 -15 -14 -13 -12 -10 -987
43210
-109876
6 7 8 9 10

Answers

I think a. But I don’t understand this question.


8. Find the number from the following expanded form: 9 x 10% + 2 x 102 + 3 x 10
(a) 900203
(b) 912351
(C) 905302
(d) 900230

Answers

Answer:

324

Step-by-step explanation:

Step 1: Multiply: 9 * 10 =90

Step 2: Multiply: 2 *102 =204

Step 3: Multiply: 3 * 10

Step 4: Add: 90 + 204 + 30 = 324

Hope this helps.

can someone help pls​

Answers

Answer:

Step-by-step explanation:

-1 =5

0=0

1=-3

2= -4

3=-3

4=0

Answer:

-1 = 5

0 = 0

1 = -3

2 = -4

3 = -3

4 = 0

5 = 5

Step-by-step explanation:

IF THS IS THE ANSWER CAN U PLZ MAKE ME BRAINLIEST

THANK U AND BE SAFE AND HEALTHY :)

Use the exchange rate £1 = €1.15 to convert €23 into £.

Answers

Computing €23 divided by 1.15€/£ gives £20

ASAPPPP HELP
A 10 foot ladder is placed against a wall at an angle of 25° with the
ground. How far up the wall does the ladder reach?
Round your answer to the nearest whole foot. DO NOT INCLUDE
UNITS IN YOUR ANSWER

Answers

Answer:

the ladder reaches 8 feet up

Step-by-step explanation:

:D

sin25 = b/10
b=10sin25
4.2 ft

A figure has an area of 64 square units. Which describes the area of the figure after a dilation with a scale factor of 3/2?
A)96 square units
B)144 square units
C)112 square units
D)32 square units

Answers

I think your answer would be a)96 square units

I dont know what to do here​

Answers

Answer:

1. acute

2.acute

Step-by-step explanation:

Convert the exponential to a logarithmic form: 104 = 10,000
Question 13 options:


A)
log 4 = 10,000


B)
log 10 = 4


C)
log 10,000 = 4


D)
log 4 = 10



pleasseeeeee

Answers

Answer:

C) log 10.000=a,5%4%4(1):53))?/

Answer:

c

log 10,000 = 4

Step-by-step explanation:

got it right on the test


Work out 3/5 of 900

Answers

Answer:

540

Step-by-step explanation:

1. We assume, that the number 900 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 900 is 100%, so we can write it down as 900=100%.

4. We know, that x is 3.5% of the output value, so we can write it down as x=3.5%.

5. Now we have two simple equations:

1) 900=100%

2) x=3.5%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

900/x=100%/3.5%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 3.5% of 900

900/x=100/3.5

(900/x)*x=(100/3.5)*x       - we multiply both sides of the equation by x

900=28.571428571429*x       - we divide both sides of the equation by (28.571428571429) to get x

900/28.571428571429=x

31.5=x

x=31.5

now we have:

3.5% of 900=31.5

An item is priced at $14.14. If the sales tax is 4%, what does the item cost including sales tax?
A.
$19.80
B.
$0.57
C.
$28.85
D.
$14.71

Answers

Answer:

28.85

Step-by-step explanation:

..... ....

......


Given the definitions of f (x) and g(x) below, find the value of (gof)(-8).
f(x) = -x + 8
g(x) = x2 – 3x+2

Answers

Answer:

(gof)(-8) = 210

Step-by-step explanation:

(gof) = (-x + 8)² - 3(-x + 8) = 2

        = x² - 16x + 64 + 3x - 24 + 2

        = x² - 13x + 42

(gof)(-8) = (-8)² - 13(-8) + 42

             = 64 + 104 + 42

             = 210

i will literally give you brianlist

Answers

11
a is the correct answer
the y-intercept is 11
because W=2t+11
and if u put 0 for t
W=2(0)+11
W=0+11=11
so the y-intercept is 11

Are the two triangles similar? How do you know?

Answers

Answer:

Yes the triangles are similar.

if you look at Angle C it's 60° and F is also 60°

60 + 67 is 127

127 + 53 is 180° which is the amount a triangle is. (assuming that E is 67°)

Similar triangles may or may not be congruent triangles.

The two triangles are similar.

From the figure, we have:

[tex]\mathbf{\angle F \cong \angle C = 60}[/tex] ----- Angles F and C are corresponding

[tex]\mathbf{\angle D \cong \angle G = 53}[/tex] ----- Angles D and G are corresponding

[tex]\mathbf{\angle H \cong \angle E = 67}[/tex] ----- Angles H and E are corresponding

Add the above angles.

[tex]\mathbf{Sum = 60 + 53 + 67}[/tex]

[tex]\mathbf{Sum = 180}[/tex]

The sum of the angles equal 180 degrees,

Hence. the triangles are similar triangles.

Read more about similar triangles at:

https://brainly.com/question/14926756

help. i’ll mark brainliest or whatever

Answers

Answer:

angle 1 is 140 degrees and angle 2 is 70 degrees

Step-by-step explanation:

it is two parallel lines with an intersecting line. This means that the two angles will be the same. Your welcome btw ur mom is hot

Answer:

Angle 1 is 140 degrees and Angle 2 is 70 degrees.

What is 5.545 as a percent?​

Answers

Answer:

545.5%

Step-by-step explanation:

Answer:

Step-by-step explanation:

Multiply both numerator and denominator by 100. We do this to find an equivalent fraction having 100 as the denominator.

5.545 ×

100

100

= (5.545 × 100) ×

1

100

=

554.5

100

Write in percentage notation: 554.5%

What is m
Enter your answer in the box

Answers

Answer:

m = 2

Step-by-step explanation:

∠ GLI = 90°

∠ GLH + ∠ HLI = ∠ GLI , that is

9m + 25m + 22 = 90

34m + 22 = 90 ( subtract 22 from both sides )

34m = 68 ( divide both sides by 34 )

m = 2

Then

∠ HLG = 9m = 9 × 2 = 18°

Other Questions
are we committing sin when we do something we do not know is a sin? A television has a normal price of 670. In a sale the price is reduced by 30%. Work out the price of the television in the sale. How many moles are in 35.6 g of H2O Which of the following functions is not performed by skeletal muscles?A. Moving the legs for walking B. Changing the position of the body C. Producing body heatD. Movement of food through the intestines Denise and Aaliyah had lunch at the mall. Aaliyah ordered three slices of pizza and two waters. Denise ordered two slices of pizza and three waters. Aaliyah's bill was $6.00, and Denise's bill was $5.25. What was the price of one slice of pizza? What was the price of one water?Liana spent $131 on shirts. Fancy shirts cost $28 and plain shirts cost $15. If she bought a total of 7 shirts then how many of each kind did she buy?Mr. Velazquez purchased two donuts and three cookies and is charged $3.30. Ashley purchases five donuts and two cookies for $4.95 at the same shop. Find the cost of one donut and one cookie. How does cytokinesis in animal cells differ from cytokinesis in plant cells? Help please I will make brainlyist. Lines s and t are parallel. Find the value of x.PLEASE HELPPPPP, THANKSS!!!! 3. The cost of the city permits needed to build this building is 150,000 no matter how many floors withcondos are built.a. Create a function p(1) based on this information.b. What is the slope of your function and what does it tell you? Which sentence goes after the first one and so on a moose is crossing a highway from marker a to markerb.a triangle connects markers ABC and markers BandC are 38 apart the angles Cand B Measure 70 and 60 respectively what is the distance from point A to pointB traveled by themoose Rapid development how is affects wildlife and the ways to overcome the challenges the distance between the park is 1.7 meters how many meters is this? combine these radicals -1212-23-503-223-263-1012 please help me, i need a long paragraph but not too long! Subliminal advertising involves presenting stimuli that area) below the absolute thresholdb) below the difference thresholdc)right at the absolute thresholdd) just above the absolute threshold In chickens, comb shape is determined by alleles at two loci (R, r and P, p). A walnut comb is produced when at least one dominant allele R is present at one locus and at least one dominant allele P is present at a second locus (genotype R_ P_). A rose comb is produced when at least one dominant allele is present at the first locus and two recessive alleles are present at the second locus (genotype R_ pp). A pea comb is produced when two recessive alleles are present at the first locus and at least one dominant allele is present at the second (genotype rr P_). If two recessive alleles are present at the first and at the second locus (rr pp), a single comb is produced. Progeny with what types of combs and in what proportions will result from the following crosses?a. RR PP rr ppb. Rr Pp rr ppc. Rr Pp Rr Ppd. Rr pp Rr ppe. Rr pp rr Ppf. Rr pp rr pp help please please guys underline the verbs plzz . i will give you brainliest plzzz its urgent Yo limpio la casa.O A. nadieO B. ningunoO c. nadaO D. nunca