Mathematics High School

System of equations!!!

System Of Equations!!!

Answers

Answer 1

Answer:

Step-by-step explanation:

1. x^2-x-20=3x-15

x=5, x=1 substitute

y=3*5-15 = 0

y=3*(-1)-15 = -18

Solution: (5,0) & (-1,-18)

2. x^2+2x+3=x+5

x=-2, x=1 substitute

y= -2+5 = 3

y=1+5 = 6

Solution: (-2,3) & (1,6)

Related Questions

Find the perimeter of the following triangle. Round your answer to the nearest hundredth.

Answers

Step-by-step explanation:

step 1. The perimeter (P) is the length around the triangle.

step 2. P = 6 + 5 + L (the length of the hypotenuse)

step 3. L = sqrt(6^2 + 5^2) = sqrt(61) where sqrt is the square root

step 4. P = 11 + sqrt(61) = 18.81.

PLEASE I NEED THIS ANSWER ASAP IF YOU ANSWER I WILL PUT YOU A BRAINLEST


Hope made 333 different yo-yos. She used 1\dfrac341
4
3
​
1, start fraction, 3, divided by, 4, end fraction meters of string for the first yo-yo, 111 meter of string for the second yo-yo, and a total of 4\dfrac134
3
1
​
4, start fraction, 1, divided by, 3, end fraction meters of string.
Hope uses the equation, 1\dfrac34+1+y=4\dfrac131
4
3
​
+1+y=4
3
1
​
1, start fraction, 3, divided by, 4, end fraction, plus, 1, plus, y, equals, 4, start fraction, 1, divided by, 3, end fraction to represent the situation.
What does the variable yyy represent in the equation?
Choose 1 answer:
Choose 1 answer:

(Choice A)
A
Number of yo-yos Hope made

(Choice B)
B
Number of meters of string in third yo-yo

(Choice C)
C
Total number of meters of string Hope used

Answers

Answer:

choice b maybe?

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Can someone help plz

Answers

the answers are:
II. 2x
III. x
IV. 6

Anybody know the answer

Answers

Answer:

5 (-9x)

Step-by-step explanation:

Product of 5

5 * ()

difference of 9

5 * (-9)

and a number

5 * (-9x)

Answer:

5(9 - x)

Step-by-step explanation:

The product of 2 numbers, is just multiplication

But in this expression, we are multiplying a number by the difference of two other numbers, hence why we should group 9 - x in parentheses.

CAN SOMEONE PLEASE HELP!!

Answers

I think it is b I really don’t know for sure


Because Edgar was sedulous, he turned into a boy genius and scored 2.53 times better
than he did on his last calculus test. His last test score was 38 percent. What did he score
on his latest test?

Answers

Answer:

96.14

Step-by-step explanation:

2.53*38=96.14

if 5 + root 3 divided by 7 minus 4 root 3 is equals to a + b root 3 find the values of a and b​

Answers

Answer:

a + b = 93.8

plz follow me

hope it help u

Kristin bought a snowboard for $60. The sales tax rate for the snowboard is $0.04 for every dollar spent. How much did Kristin pay in all for the snowboard?

Answers

62.4 dollars in total

If you answer both questions properly I might give you the brainlies

Answers

Answer:

32

Step-by-step explanation:

Answer 32

Step by step explanation

What is (-1) x (+8)

Answers

Answer:

-8 would be the answer

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

(-1)*8

-(1*8)

= -8

Hiiioo can someone please help me please!

Answers

The answer is -3/4. The slope formula is y2- y1 over x2 - x1.

1-4 / 5-1 = -3/4

Answer:

B, -3/4

Step-by-step explanation:

Slope can be found by using rise over run. From point x the line drops three points making the rise -3, and it goes to the right four points making the run 4. That makes our answer -3/4.

I am a number between 12 and 18.
I am a multiple of 2.
I am not a multiple of 4.

Answers

i believe it’s 14 :))

Find the slope of the line that passes through (4,-5) and (-2,9)
a -2/3
b 5/3
c -7/3
d 2
Please help me

Answers

Answer:

C) -7/3

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(9-(-5))/(-2-4)=(9+5)/-6=14/-6

simplify -14/6 to -7/3

45% of the students at Mannion Middle School walk to school. If 234 students walk to school, how many students are at Mannion Middle School?

Answers

Answer:

520

Step-by-step explanation:

234=45%

26=5%

100/5=20

20X26=520

Answer:c520 is the answer your welcome! :)

Step-by-step explanation:

SOME ONE HELP ASAP PLS

Answers

Answer:

3566 did the test.

Step-by-step explanation:

Answer:3566

Step-by-step explanation:

The location of three fish relative to the water's surface are -10 feet -3 feet, and -12 feet. Which number has the least absolute value?

Answers

Absolute value is the value despite the positive or negative part. If I have -10 and -3 and -12, the absolute values are 10, 3 and 12. Which one out of those three numbers is the least? The answer is 3.

Amy bought 2 shirts for $16.90 each. Tax is
7%. What is the total cost of the two shirts
including tax

Answers

Answer:

36.166

Step-by-step explanation:

can someone please help me with this, ill give you brainiest, I rlly need help!!

Answers

Answer:

y-2=-6(x-1)

Step-by-step explanation:

Answer:

y=-6x+8

Step-by-step explanation:

What is the answer to this word problem??

Answers

Answer:

200

Step-by-step explanation:

40 x 5 = 200

What is the value of x?

Answers

its b and i need more chars here

Answer:

Step-by-step explanation:

Fact: sum of angles in a triangle is 180° so add all angles and find x

x+2x+2x+15 =180 ; subtract 15 from both sides

5x = 180-15; divide by 5 both sides

x= 33

Please hurry
thank you

Answers

Answer:

yes

Step-by-step explanation:

Answer:

57 + 52 is 109. 109 + 51 = 160. 160 + 20 is 180

Step-by-step explanation:

Brainliest please

Decrease £101 by 43%
Give your answer rounded to 2 DP.
£

Answers

Answer:

10

Step-by-step explanation:

round it by 2 and there you go!

In a survey of 2,300 people who owned a certain type of​ car, 1,264 said they would buy that type of car again. What percent of the people surveyed were satisfied with the​ car

Answers

Answer:55%

Step-by-step explanation:

1264/2300 ?/100

1264*100= 126400

126400/2300= 54.95 then round and get 55

Pls help

Solve for m

a=f/m

Answers

Answer:

m is not = 0

Step-by-step explanation:

hope this help

5. The sales tax in New Jersey is 6%.
About how much will a $31 backpack
cost, including sales tax?
A $1.50
C $33
B $30
D $38

Answers

Answer:

c. $33

Step-by-step explanation:

$31 * 6% = $1.86

$31+$1.86 = $32.86

$33 is the closest.

Write two equivalent expressions for 15(3 + w).
1.
2.

Answers

1. 15/4 (2w+3)^2 - 135/4
2. w(15w+45)

Help me please ASAP. I really need this

Answers

Answer:

Step-by-step explanation:

I don't think this can be done without the diagram. You do not know what HD is opposite. I will take a guess that it is opposite TU which makes TU = 220 because both H and D are midpoints and that makes TU twice as large as HD.

If this is incorrect, post the diagram.

Select all the statements that describe the expression 5 + 2x

A.The expression represents 5 plus 2 plus x.

B.The expression represents 5 plus 2 times x.

C.The expression represents 5 plus x plus 2

D.The expression represents the product of 2 and X plus 5.

E.The expression represents the sum of 5 and 2x.

F.The expression represents the product of 5 and 2x.

Answers

I think that the answer could be B and the other one could be E

PLEASE HELP IM HOPELESS
What is the location of point C?



(-4, -5)
(-5, -4)
(-5, 4)
(4, -5)

Answers

Answer:

(-4,-5)

Step-by-step explanation:

(x-coordinate, y-coordinate)

-4 is C's x-coord and -5 is C's y-coordinate

Answer:

thx

Step-by-step explanation:

John works in a car dealership selling new and used cars, He is extremely busy during major holidays selling as many cars as possible. The store’s motto is “Work Hard Earn More”. During the last holiday period, John sold $150,000 worth of vehicles. His commission is 15% of the first $100,000 and 10% on the remaining balance. How much commission did he earn on his total sales?

Answers

$20,000

15% of 100,000$ is 15,000$

10% of the remaining 50,000$ is 5,000$
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