select the TWO systems of equations that have exactly one solution
A. y= 3x + 1
y= -3x + 7

B. y= 3x + 1
y = x + 1

C. y= 3x + 1
y = 3x + 7

D. x + y = 10
2x + 2y = 20

E. x + y = 10
x + y = 12

Answer:

D

Step-by-step explanation:

for D

let (x,y) = (5,5)

5+5=10

5+5=102×5+2×5=20

let (x,y) = (6,4)

6+4=10

6+4=102×6+2×4=20

I will give brainliest, if it is right, and you are the first person to answer.
A scale drawing has a scale of 2 cm : 21 km. Find the actual length for a drawing length of 4.5 cm.


41.4 km

47.25 km

35.8 km

23.5 km
sorry I ask so many questions, I hate this topic in math, tysm

need help
will give brainly

Please answer these
i need this

Martin charges $10 for every 5 bags of leaves he rakes. Last weekend, he raked 24 bags of leaves. How much money did he earn?

________for 24 bags of leaves

NEED HELP ASAP WILL GIVE BRAINLEST... 30 POINTS!!!!!

Which fraction is equivalent to StartFraction 5 Over 20 EndFraction?
StartFraction 4 Over 16 EndFraction, because StartFraction 5 Over 20 EndFraction = one-fourth and One-fourth = StartFraction 4 Over 16 EndFraction
StartFraction 4 Over 12 EndFraction, because StartFraction 5 Over 20 EndFraction = one-fourth and One-fourth = StartFraction 4 Over 12 EndFraction
StartFraction 4 Over 19 EndFraction, because StartFraction 5 Over 20 EndFraction = StartFraction 5 minus 1 Over 20 minus 1 EndFraction = StartFraction 4 Over 19 EndFraction
StartFraction 4 Over 15 EndFraction, because StartFraction 5 Over 20 EndFraction = one-fifth = StartFraction 5 minus 1 Over 20 minus 5 EndFraction = StartFraction 4 Over 15 EndFraction

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If you are 60 inches tall and you cast a 80 inch shadow, how long is a shadow of a building if the shadow is 120 inches?

please help ill give brainliest if u just want the points comment and ill submit another question for a lot of points just don't submit an answer I really need the right answers only

Which expression is equivalent
to 5.7 × 5.7 × 5.7?

Hey!! Please solve all CORRECTLY, I'm counting on you guys (i will also give brainliest and 20 points)

what does 8 - d stand for as in, 8 less than d, or d less than 8

Choose the set of equivalent fractions that matches the images:

Andrea started a workout program at a local health club. she began with a 25 minute workout and has increased her time by 5 minutes per week.

How many weeks should she increase her time , if she wants her workout to be no more than one hour?

Help me I really need help

HURRY WILL GIVE BRAINLIEST
What is the standard form of the equation of a circle with its center at (2, -3) and passing through the point (-2, 0)?

A (x − 2)2 + (y + 3)2 = 5
B (x + 2)2 + (y − 3)2 = 25
C (x − 2)2 + (y + 3)2 = 25
D (x − 2)2 − (y + 3)2 = 5

which question can be answered by solving the inequality 8d > 200
answers above

Please answer each question if you can. I am taking a timed test and I do not understand.

All of the following are equivalent except _____.

7.5:4.5
5 is to 3
15/5
45/27

Solve for the variable in the following proportion.
4/7 = x/161
x=___

Solve for the variable in the following proportion.

1/4 is to 1 1/4 as 2 is to b
b=___

Solve for the variable in the following proportion.
5/25 = m/125
m=___

Sadie has $1 worth of nickels and dimes. She has twice as many nickels as dimes.


Write a system of equations that could be used to determine the number of nickels


and the number of dimes that Sadie has. Define the variables that you use to write the


system.


Let


=C


Let


=


System of Equations:


o


M

Please help! I’m a little behind in math rn and could use help on this :))- Graph above!!!

What is the distance from J to K?

A. 13 units
B. 169 units
C. 7 units
D. 17 units

PLEASE ANSWER ALL CORRECTLY IM STRESSING

At the beginning of the month, there were 80 ounces of peanut butter in the pantry. Since then, our family has eaten 30% of the peanut butter. Which expression represents the ounces of peanut butter left in the pantry?
0.7(80)
0.3(80)
80 - 0.30
None of the above

The point (2, 5) is represented on the graph. Which point also belongs on this graph?

Someone answer i need it answer before 11:40

Which ordered pair is the solution to the system of linear equations y = - 7 x + 2 and y = 9 x - 14?

(- 5, 1)
(1, -5)
(5, - 1)
(- 1, 5)

I found another page exactly like this, but the person put one instead of fourteen and so the correct answer was not given.

i need helpppppp please

Which shows the use of the commutative property?

3 (7 + n) = 21 + 3 n
7 + (3 + n) = (7 + 3) + n
3 n + 7 = 7 + 3 n
(7 + 3) + n = 10 + n

HELPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!

Davin and Kevin both think that their lego tower is the tallest. Davin's tower is 346.7 centimeters tall and Kevin's is 346.700 centimeters tall. Who has the tallest tower? How do you know? Explain your answer in complete sentences.

please help I really need the right answer ill give brainiest and if u just need the points don't submit a wrong answer comment and ill help u get a lot of points:)))

Help? Writing equations in slope-intercept.
Which of the following is the CORRECT slope-intercept form of the equation -4x + 2y = 14?
There is only one choice.

y = 2x + 7
y = 4x + 14
y = -2x + 7
y = -4x + 14