Mathematics College

Someone answer and explain ILL MARK BRAINLIEST!!!

Someone Answer And Explain ILL MARK BRAINLIEST!!!

Answers

Answer 1

Answer:

x=1, y=-2

Step-by-step explanation:

2x-3y=8 (1)                            

4x+3y=-2 (2)

From (1):

2x=8+3y

x=4+1.5y (3)

Subst (3) into (2)

4(4+1.5y)+3y=-2

16+6y+3y=-2

16+9y=-2

9y=-2-16

9y=-18

y=-2

subst y=2 in to (3)

x=4+(1.5*-2)

x=4-3

x=1

Ans: x=1, y=-2

Related Questions

last year megan had 63 books in her collection now she has 112 books what is the percentage increase

Answers

The answer (I think) is 56

Answer:

56.25%

Step-by-step explanation:

Divide

63/112 = .5625

Convert to a percentage

56.25%


5. For the final touches, John wanted to paint the house using 3 colors. If he has 5
gallons of paint for each color, write an equation for the total number of gallons of
paint he has?

Answers

Answer:

3 x 5 = 15

Step-by-step explanation:

To explain this in short, John has 5 gallons of 3 colors, meaning that 3 x 5 = 15 would be the appropriate equation to finish this question. I hope this helps!

Nora made 15 gallons of lemonade for a community picnic. She served 100 pints to the people. How many pints are leftover? Please help!

Answers

Answer: 20 pints will be left

Hope it helps.
1 gallon has 8 pints. 15*8 120 then substrate by the pints used= 20

Answer:

There are 8 pints to a gallon so she makes 120 gallons, and since she served 100 pints then there are 20 pints left over.

Brainliest please?

find the value of each variable or indicated measures​

Answers

Answer:

Step-by-step explanation:

To find the angle measure of an angle inside an arc then you multiply 1/2 by the sum of the 2 intercepted arcs.

x=1/2(42+56)

x=1/2(98)

x=49

Corey records the temperature in degrees Celsius each morning. At 8am the temperature was 3 degrees below zero. It rose 3 degrees by 10am. Which equation shows the change in temperature from 8am to 10am?

A 3+3=6
B-3+3=0
C-3+3= -6
D-3-3= -6​

Answers

B

It was 3 degrees below so the 3 will be a negative 3. Then by 10 it rose up by 3 so it is a positive 3. So -3+3=0

Which of the following options have the same value as 96% of 25?
Choose 2 answers:
96
100
• 25
Pro
B
0.96 - 25
Tea
0.96 . 0.25
96 25
100 100
96 - 25

Answers

Answer:

A

Step-by-step explanation:

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A quality-assurance worker wants to systematically sample 120 glass jars each day from a conveyor belt in a factory that puts out 3,600 jars each day. If the worker will select every kth jar, what is the best value of k for the worker to use? Enter a whole number.

Answers

Answer:

The best value of k for the worker to use is 30.

Step-by-step explanation:

Sample of 120 jars from a set of 3,600.

If the worker will select every kth jar, what is the best value of k for the worker to use?

The best case would be starting at 0 and ending at 3600, finding 120 values, which means that k is given by the division of 3600 by 120. So

[tex]k = \frac{3600}{120} = \frac{360}{12} = 30[/tex]

The best value of k for the worker to use is 30.

[tex]1/5(6+3+1)^{2}[/tex]

Answers

Ur answer is 20

Evaluate
6+3+1
10
1/5*10 2

1/5*100

100/5 multiple the #

20


Joe ran 1 1/4 laps in 2 minutes. How many laps did Joe run on average per minute?

Answers

Answer

2.5/4

Step-by-step explanation:

If you do 1 1/4 divided by 2 that would equal 2.5/4 I hope that helps!

What is the area of this figure?

Answers

I believe the area is 66

Answer:

Area = 183

Split the shape into two and calculate the area, or something

What’s the answers for these questions and how do you solve it?

Answers

All ik is the first one is 14

what is the complementary angle of 90​

Answers

the answer would be 0

It is when two Angles add up to 90 degrees

for example 30 + 60

Evaluate the expression.

3×2⁴​

Answers

The answer to this equation is 48

Tim used 4 1/2 cups of oranges,3 1/2 cups of apples,and 5 1/2 cups of pears in a fruit salad.How many cups of fruit did Tim use altogether?​

Answers

Answer:

13 1/2 cups of fruit

Step-by-step explanation:

4 1/2+ 3 1/2= 8

8+ 5 1/2= 13 1/2

i hope this helps!!!

A flag pole casts a shadow that is 10 feet long. A nearby windmill casts a shadow that is 18 feet long. If the flag pole is 18 feet tall, how tall is the windmill, to the nearest tenth of a foot?​

Answers

Answer:

26

Step-by-step explanation:

i need my points

Answer:

26?

Step-by-step explanation:

Which of the following was the immediate cause of the Sepoy Rebellion?

Answers

The immediate cause for the revolt was the introduction of the new Enfield rifle to the British Indian Army.

Answer:

Indian soldiers were forced to use pig- and cow-based cartridges in their guns.

Step-by-step explanation:

Martin needs 3.25 gallons of paint for his small barn and 1.25 gallons of paint for his shed. he spends $81 on paint, how much does the paint cost per gallon?​

Answers

Answer:

$24.92, $65

Step-by-step explanation:

1. $81 divided by 3.25 = 24.9230769231 = $24.92

2. $81 divided by 1.25 = $64.8, rounded could be $65.

sorry if I'm wrong :).

If a square has sides that equal 5 meters, what is the perimeter?

Answers

20. 5 times 4 sides

Use the following probability model to answer the question.
Event: For each adult resident in a city we ask how many
vehicles they own.
Number of Vehicles
Probability
0.04
0
1
0.41
0.38
0.13
UWN
0.03
0.01
Find the probability that an adult resident has 3 or more
vehicles. Give your answer as a number between 0 and 1.

Answers

Answer:

Step-by-step explanation:

Number of Vehicles Probability

0 0.04

1 0.41

2 0.38

3 0.13

4 0.03

5 0.01

X= 1

.13+.03+.01=0.17 (the amount with 3 or more cars)  

0.17/1(Total amount of all probability)= 0.17 has 3 or more cars.

Probability is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

The probability that an adult resident has 3 or more is 0.17

What is probability?

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

We have,

The probability distribution of the number of vehicles is given as,

P(x) where x is the number of vehicles.

P(0) = 0.4

P(1) = 0.41

P(2) = 0.38

P(3) = 0.13

P(4) = 0.3

P(5) = 0.1

The probability that an adult resident has 3 or more.

= P(3) + P(4) + P(4)

= 0.13 + 0.03 + 0.01

= 0.17

Thus,

The probability that an adult resident has 3 or more is 0.17

Learn more about probability here:

https://brainly.com/question/14099682

#SPJ2

calculate the perimeter of a quarter circle 2mm use pi=3.14​

Answers

Answer:

Step-by-step explanation:

If the radius of the circle is 2mm, the circumference is 4π mm.

Arc length of the quarter circle = π mm.

Perimeter of the quarter circle = arc length + 2 radii = 4π + 4 mm = 16.56 mm

what is the measure of angle 1?

a. 36

b. 86

c. 89

d. 94

Answers

The answer is D. 94 for sure

Answer:

D, 94

Step-by-step explanation:

Angles of a triangle add up to 180 degrees.  180 - 29 - 65 = 86 Angles 1 and 2 add up to 180 degrees.  86 = 2  180 - 86 = 94 94 = 1

Hope this helps! If it did, please mark it as brainliest! It would help me out a lot! :D

Find 10.8% of 405. Round to the nearest tenth.

Answers

Answer: 43.7

Steps:
405 * 10.8%
405 * 0.108 = 43.74
43.74 = 43.7


Using the expression you found in part a, how many minutes will it take to make and pack an order for 15 parts?

Answers

Answer:

It will take 40 minutes to make and pack an order for 15 parts.

Step-by-step explanation:

That's the answer.

Answer:

It will take 40 minutes to make and pack an order for 15 parts.

Step-by-step explanation:

Write 3+5/10+6/100+8/1000 as a decimal

Answers

Answer:

3.568

Step-by-step explanation:

3+0.5+0.06+0.008=3.568

how could i find the value of this expression?​

Answers

Answer:

you plug in the numbers

Step-by-step explanation:

Please mark brainliest!!

Answer:

√x⁴-y²

x²-y²

(x+y)(x-y)

when

x=3

y=-6

√x⁴-y²=(3-6)(3+6)=-3×9=-27 is your answer

A cone has a volume of 350 cubic meters. The area of the baseis
70 square meters. What is the height of the cone?

Answers

Answer:

The height is 15

The answer to it is 15

What is the volume of this cube?

Answers

Answer:

50

Step-by-step explanation:

im not that sure sorry

Answer:

The answer is 0.125.

Step-by-step explanation:

The forumla to find volume of a cube is a3. (Let a repersent 0.5) 0.5x0.5x0.5 is 0.125

Find the volume of this rectangular pyramid.
Be sure to include the correct unit in your answer.

6yd,3yd,7yd,

Answers

Answer:

the volume is 42 yds

Step-by-step explanation:

multiply 6x3x7=126

divide 126 by 3

126/3=42

Find the missing height in the diagram.
4 ft
81
12 ft
feet
3
64
16 ft

Answers

Answer:

2feet at the least man

Answer:

4ft

Step-by-step explanation:

i did 12ft - 8ft which would of gotten the length of the bottom length.

If US $1.00 is equivalent to EC $ 2.70, how much in US would one get from EC 297.00?

Answers

NEEED POINTS ..





xx ‘zmsms
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