Help me, please! I'll give a lot of points!
Solve the system of equations to find a and b.
a + b = 22
3a + 1b = 30
Explain how you got the answer (step-by-step) and name a particular method you used.
If the answer does not contain everything, I'll delete it. Sorry :/

Answers

Answer 1

Answer:

A= 4

B= 18

This is just basic math, so I didn't write it out step by step. I also didn't use a specific method in math, so I can't answer those questions for you. But there is the answer to the actual question.

Answer 2

Answer:

This is a Simultaneous Equation

Now

We'll solve by Substitution.

a + b=22 ------(i)

3a + b = 30 -----(ii)

From (i)

Make b the subject

b= 22–a

Substitute b=22–a into equation (ii)

3a + b= 30

3a + (22–a)=30

3a + 22 – a= 30

3a - a = 30 -22

2a = 8

a= 4.

Now put a=4 into any equation of your choice to get b.

let's take equation (i)

a + b = 22

4 + b=22

b= 22-4

b=18.

FINAL ANSWER

a=4

b=18


Related Questions

Hellpppppp pleaseeee

Answers

Answer:

435

Step-by-step explanation:

1500 x 0.29 = 435

Answer: 435

Step-by-step explanation:

29% is the same thing as 0.29, or 29/100

Since you have to find 29% of the total 1500 students, you have to multiply 29/100 and 1500

which is 435

I hope this helps!

Pls help with this no links

Answers

Answer:

A. 31.84

Step-by-step explanation:

Since ms perry is greater, u subtract 40.44 by 8.6 giving you 31.84

Answer:

A: 31.84

Step-by-step explanation:

40.44 - 8.6 = 31.84

subtracting decimals is the same as subtracting regular numbers, you just have the line up the decimals and subtract like normal.

Solve for the value of z: 14/5 = z/24
____?

Answers

Answer:

Step-by-step explanation:

Cross multiplying

5z =14*24

5z = 336

Divide by 5

z = 336/5

Or mixed fraction z= 67(1/5)

Decimal z= 67.2

Answer:

I agree with adeline23 it is 67.2

Step-by-step explanation:

5z =14*24

5z = 336

z = 336/5

z= 67.2

can someone help me on this.

Answers

Answer:

what grade is this

Step-by-step explanation:

just put the dots on x and y on the chart on the graph

when raising a power to another power, keep the base and_____the exponents.
Add,Subtract, Mulitply, or Divide

Answers

Answer:

multiply

Step-by-step explanation:

for example (2²)²

the answer must be 2²×²

which is 2⁴

please mark me as brainliest!

Answer:

Multiply

Step-by-step explanation:

The exponent "product rule" tells us that, when multiplying two powers that have the same base, you can add the exponents.Adding the exponents is just a short cut! The "power rule" tells us that to raise a power to a power, just multiply the exponents.

What is the constant of proportionality of
1. y=2.0+ 0.5x

2.y=75x
3.y=55x

4.y=320-15x

5. y= 15/60 x+30

6.y=2.25
7.y=5x+3

8.y=3-0.6x
9.y=15+ 1/2x
10.y=65x

Thank you, no fake answers or links.
please do at least 5 .-.

Answers

Answer:

I couldn’t add all my solotions but u can make another question so I can give it to u

Step-by-step explanation:

But this are just the graph tell me if u need solutions

number 5 because it is on the more

1. what is the setting of home sick by jean fritz

2. in 2 sentences, tell me the central idea of homesick by jean fritz

Answers

Answer:

2. Jean  a ten-year-old girl in the town of Hankow. Her mother and father work for the YMCA doing relief work. She attends a British school there and hates her teacher, Miss Williams, along with a couple of the other students. In general, Jean feels culturally conflicted, the product of two cultures but not belonging to either one, and she longs for a long-promised trip to America in a couple of years.

Step-by-step explanation:

Homesick is author Jean Fritz's story of her childhood growing up in China in a town called Hankow. While Jean adopts a first-person perspective and includes mostly real-life details from her life, some parts of Homesick are fictionalized in order to add dramatic interest.

Pls help me! Thanks!

Answers

0+7=7

1+7=8

2+7=9

3+7=10

4+7=11

5+7=12

We can find patterns.

So the answer would be +7.

Y= 1x + 7. When x is 0 look at the number across from it and that is the y-intercept

Indicate whether each equation below is a one-step equation or a two-step equation.

25 = x + 3

One step equation or two step equation?


2b - 7 = 15

One step equation or two step equation?


10m = 90

One step equation or two step equation?

Answers

1.one step
2.two step
3.one step
1. one step subtract the 3 to get x=22
2. two step add seven to 15 22/2 b=11
3. one step 90/10 m=9

Francis is half of Tyler's age (t).
Francis just turned 9.
Choose the equation that correctly models this situation.

9 = 1/2t

9 = 2t

2 + t = 9

t - 9 = 1/2

Answers

Answer:9=1/2t

Step-by-step explanation:

Francis age = 9

Her age is half of Tyler’s which is t

So 1/2 of t is 9

Answer is 9=1/2t Hopes this helps

can i get some help plez?

Answers

Answer: i agree because slope of -3 is perfectly horizontal If you dont have anything in the way of walking those 3 miles

Step-by-step explanation:

Describe the process for taking a set of data and creating a circle graph from it.

Answers

Answer:

Circle graphs

A circle is the same as 360°. You can divide a circle into smaller portions. A part of a circle is called an arc and an arc is named according to its angle.

A circle graph, or a pie chart, is used to visualize information and data. A circle graph is usually used to easily show the results of an investigation in a proportional manner. The arcs of a circle graph are proportional to how many percent of population gave a certain answer.

Please answer all 4 questions, iĺl give brainliest

Answers

Answer;

(1. 220 m) (2. 44 m) (3. 120 m) (4. 13)

Step-by-step explanation:

Answer:

A. 110m squared

B. 22ft squared

C. 60cm squared

D 6.5 yd squared

Step-by-step explanation:

blue = 22 x 10 x 0.5 = 110m squared

Purple= 11 x 4 x 0.5 = 22ft squared

Orange = 15 x 8 x 0.5 = 60 cm squared

Red/Pink = 2 x 6.5 x 0.5 = 6.5 yd squared

Eyewitness news is still practiced today.
A. true
B. False

Answers

Ok this came up on math answers....... true?????
the answer is true .

What are all the solutions to p2 =
9/36

Answers

solution is p = -1/2 and p = 1/2

The fraction number 9 / 36 is also equal to 1 / 4. Then the value of the p will be 1 / 4.

What is a fraction number?

A fraction number is a number that represents the part of the whole, where the whole can be any number. It is in the form of numerator and denominator.

The equation is given below.

p = 9 / 36

The fraction number 9 / 36 can be written as 1 / 4.

Then the equation will be

p = 1 / 4

Then the value of the p will be 1 / 4.

More about the fraction number link is given below.

https://brainly.com/question/78672

#SPJ2

Help

The dot plots below show the test scores of some mathematics students and some science students: Two dot plots are shown one below the other. The top and the bottom plots have the title Mathematics Students and Science Students respectively. Below the line for each dot plot is written Mark. The markings on each line are from 30 to 50 at intervals of 1. For the top plot there are two dots each for 34 and 40 and 1 dot each for 32, 33, 35, 37, and 39. For the bottom plot there are 2 dots each for 43, 46 and 49 and 1 dot each for 41, 42, and 47. Based on visual inspection of the dot plots, which group of students appears to have the larger average score? The mathematics students The science students Both groups are similar. Not enough information is available to draw a conclusion.

Answers

Answer: The science students.

Step-by-step explanation: You find the average by adding up all of the scores divided by the number of dots. Math had an average of 36 while science had an average of 45.11.

JUST ANSWER PART B I REALLY NEED HELP

Answers

Answer: B

Step-by-step explanation: if not im sorry

it’s a because it’s a negative slope and the y axis is 38.967

Are the expressions equivalent? Select all that

apply.

A) 3 + 2 − 4 and 2 − n

B) 5(3 + 2) and 15 + 10

C) 2( × × ) and 6

D) −8(2 − 3) and −16 − 3

Answers

It’s B sorry if i’m wrong tho
I think it’s b and d

POINTS!!!
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Only answer these, please!

Answers

page 1

1) (10, 0): This point will lie on the positive x-axis since the y-coordinate is zero.

2) (4, 9): We need the y-coordinate for this point to identify its location.

3) (14, -11): This point will be in the third quadrant as both the x and y coordinates are negative.

4) (0, 0): This point is at the origin since both the x and y coordinates are zero.

5) (0, -16): This point will lie on the negative y-axis since the x-coordinate is zero.

Now, let's plot the given ordered pairs on the coordinate plane:

A(3, -5): This point will be in the third quadrant.

B(0, 2): This point will lie on the positive y-axis.

C(-1, -4): This point will be in the third quadrant.

D(-6, 0): This point will lie on the negative x-axis.

E(1, 3): This point will be in the first quadrant.

F(-3, 1): This point will be in the second quadrant.

(-7, -18): This point will be in the third quadrant.

Now, let's write the ordered pairs for the given points on the coordinate plane:

G(2, -7)

H(-5, -3)

J(6, 0)

L(0, 5)

K(3, 2)

M(-1, -6)

page 2

1) (27, -89): This point will be in the third quadrant as both the x and y coordinates are positive and negative, respectively.

2) (0, -19): This point will lie on the negative y-axis since the x-coordinate is zero.

3) (14, 34): This point will be in the first quadrant as both the x and y coordinates are positive.

4) (0, 0): This point is at the origin since both the x and y coordinates are zero.

6) (-1, 103): This point will be in the second quadrant as the x-coordinate is negative and the y-coordinate is positive.

(126, -12): This point will be in the fourth quadrant as both the x and y coordinates are positive and negative, respectively.

9) (352, -353): This point will be in the fourth quadrant as both the x and y coordinates are positive and negative, respectively.

7) This ordered pair is missing.

10) This ordered pair is missing.

Now, let's plot the given ordered pairs on the same coordinate plane:

A(13, 8): This point will be in the first quadrant.

B(-11, -6): This point will be in the third quadrant.

C(0, -5): This point will lie on the negative y-axis.

D(6, -7): This point will be in the fourth quadrant.

E(-15, 2): This point will be in the second quadrant.

F(0, 0): This point is at the origin.

G(2, 9): This point will be in the first quadrant.

H(9, 0): This point will lie on the positive x-axis.

I(8, 5): This point will be in the first quadrant.

J(-3, 2): This point will be in the second quadrant.

K(0, 7): This point will lie on the positive y-axis.

M(12, -8): This point will be in the fourth quadrant.

Now, let's write the ordered pairs for the given points on the coordinate plane:

11) A(6, -3)

12) B(-4, 0)

13) This ordered pair is missing.

14) D(3, -6)

15) E(-5, 1)

16) F(0, 0)

17) G(1, 4)

18) This ordered pair is missing.

19) J(-2, -5)

20) K(0, 3)

21) L(8, -2)

(THIS IS 6TH GRADE MATH) WHATS THE EXPRESSION FOR THESE​

Answers

The expression is y=Mx+b
Y=mx+b is the correct answer

which equation is needed to determine the volume of the given figure?

Answers

Answer:

[tex]v = \pi \times {r}^{2} \times h[/tex]

Step-by-step explanation:

height=11km

diameter=10km

radius=diameter÷2

=10÷2

=5km

now,

volume=

[tex]\pi \times {r}^{2} \times h \\ \frac{22}{7} \times {5}^{2} \times 11 \\ \frac{6050}{7} \\ 864.3 \: {km}^{3} [/tex]

The local newspaper has letters to the editor from 10 people. If this number represents 8​% of all of the​ newspaper's readers, how many readers does the newspaper​ have?

Answers

Answer:

The local newspaper has 250 readers in total

Step-by-step explanation:

Given that

Letter to the editor = 10

Also it is given that 10 is the 4% of total readers of the newspaper.

Let x be the number of readers of the newspaper

It can be written as:

Converting the percentage into decimal

The newspaper has 250 readers.

Hence,

The local newspaper has 250 readers in total

Please help me !!!!!!

Answers

Answer:334.65

Step-by-step explanation:

5.75 (33) + 3.45 (42) = 334.65

189.75+144.9= 334.65

Answer:

334.65

Step-by-step explanation:

first you multiply 5.75 times 33 and get 189.75 then you do 3.45 times 42 and you get 144.90 then you do 189.75 times 144.90 equals 334.65

There are 30 dogs at the park. 5/6 of the dogs are large.

Which method is a way to find the number of large dogs at the park?

Answers

Step-by-step explanation:

Divide 30 by 6 and then multiply the quotient by 5

D, divide then multiply

can the counting principle be used to help you figure out the number of favorable outcomes? Why or why not

Answers

Answer:

Um i dont think so

Step-by-step explanation:

Answer:You can use the Counting Principle to find probabilities of events. The probability of any event is equal to the ratio of favorable outcomes to the total number of equally likely possible outcomes. Favorable outcomes are the outcomes you are looking for.

Step-by-step explanation:

A toy shop purchases 125 identical stuffed animals for a total cost of $312.50 and sells them for $7 each. What is the markup?


$561.00

$ 561.50

$ 562.00

$ 562.50

Answers

125 x 7.- $312.50 = $562.5

HELPPP PLEASE THANK UUU :))))

Answers

Answer: 525

Step-by-step explanation:

3/4

x/700

Answer is 525 .........

What is the answer to this math question?

Answers

Pls give a formula and I will help u
Formula??


Explanation: NEED FORMULA

What is 11% of 102.84?
Will mark Brainliest

Answers

Answer:

11.3124

Step-by-step explanation:

Answer: 20.568

Step-by-step explanation:

that is 20% of 102.84

HELP ME with how much

Answers

Answer:

$32.50

Step-by-step explanation:

1. Add total weight if all pumpkins

2. Multiply weight if pumpkins by price of each pound

3. Minus 100 from the the product you get from step 2

The correct answer is 32.50
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