How do you know how many solutions there are to a linear systems of equations?

Answers

Answer 1
it depends on the answer

Related Questions

The same brand of jelly beans comes in 2 sizes a 10 ounce bag for $1.99 and an 18 ounce bag for $2.99. Which size is the Better buy per ounce

Answers

Divide the price of the bag by the number of ounces in the bag

BAG 1
$1.99 ÷ 10 ounces= $0.199 per ounce

BAG 2
$2.99 ÷ 18 ounces= $0.166 per ounce

ANSWER: The $2.99 bag is a better buy per ounce at $0.166 per ounce.

Hope this helps! :)

After calculating the price per ounce for both size bags of jelly beans, the 18-ounce bag at $0.166 per ounce is a better buy per ounce compared to the 10-ounce bag at $0.199 per ounce.

To determine which size of jelly beans is the better buy per ounce, we need to calculate the price per ounce for each bag. Then, we can compare the two to see which one provides a lower cost per ounce, indicating the better value.

Calculate the price per ounce for the 10-ounce bag: $1.99 / 10 ounces = $0.199 per ounce.

Calculate the price per ounce for the 18-ounce bag: $2.99 / 18 ounces = $0.166 per ounce.

Compare the two price per ounce figures: $0.199 per ounce for the 10-ounce bag versus $0.166 per ounce for the 18-ounce bag.

The 18-ounce bag has a lower cost per ounce than the 10-ounce bag, so the 18-ounce bag is the better buy per ounce.

graph the quadratic function f(x)=−1/2x^2+7.

Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.

GRAPH FOR BRAINLIEST

Answers

see picture for graph.
 Use the same steps as the first one to solve this one

Answer:y=(0,7) x=(2,5)

Step-by-step explanation:

smart

Quadrilateral ABCD ​ is inscribed in a circle.

What is the measure of angle A?



Enter your answer in the box.

m∠A=

Answers

One of the circle theorems is that opposite angles in a cyclic quadrilateral sum to 180°.
So, m<A + m<C = 180°. Let's substitute:
3x+6+x+2=180
4x+8=180
4x=172
x=43°
m<A = 3x + 6
m<A = 3(43)+6
m<A = 129+6
m<A = 135°

The measurement of angle A in the given cyclic quadrilaterals, is 135°

What is a cyclic quadrilateral?

A cyclic quadrilateral is a quadrilateral which has all its four vertices lying on a circle. It is also sometimes called inscribed quadrilateral.

Given that, a quadrilateral ABCD ​is inscribed in a circle, so this type of quadrilaterals are called cyclic quadrilaterals, m ∠ A = 3x+6 and m ∠ C = x+2

We need to find, m ∠ A,

We know that in cyclic quadrilaterals, the opposite angles are supplementary,

Therefore,

m ∠ A + m ∠ C = 180°

3x+6+x+2 = 180°

4x+8 = 180°

4x = 172°

x = 43°

Therefore,

m ∠ A = 3x+6

m ∠ A = 3(43)+6

m ∠ A = 135°

Hence, the measurement of angle A in the given cyclic quadrilaterals, is  135°

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To determine whether the inverse of a function is a function, you can perform the vertical line test. A. True B. False

Answers

I think it's A since u would normal use the vertical line test on a line on a graph to see if it's a function.

human reproduction usually involves?

Answers

It usually involves internal fertilization by sexual intercourse .
Only one sperm is required fertilize the ovum .
Hope this help you
Final answer:

Human reproduction involves fertilization, gestation, birth, and parental care.

Explanation:

Human reproduction involves the process of sexual reproduction, where a male and female contribute genetic material to produce offspring. This process includes several steps:

Fertilization: The fusion of an egg and a sperm to form a zygote.Gestation: The development of the embryo inside the female's womb.Birth: The delivery of the baby.Parental care: Taking care of the newborn to ensure its survival and growth.

These steps are essential for the continuation of the human species.

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A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters. What is the area of the cross section?

Answers

Answer: 81pi square meters

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

Work Shown

C = 18pi is the given circumference
d = diameter which is unknown

C = pi*d
18pi = pi*d
18 = d
d = 18

The diameter is 18 meters.
Half of this is the radius r = d/2 = 18/2 = 9
The radius is 9 meters

Use the value of r to find the area of the circle
A = pi*r^2
A = pi*9^2
A = pi*81
A = 81pi

The area of the circular cross section is 81pi square meters

I don’t know how to find the missing angles

Answers

Actually those 4 angles are equal to 110 because those are vertical angles
you have to divide because 2 change a smaller number two a larger number divide

ASAP HELLLPP MEEEEEE AAAAAAA! NEED HELP WITH EM ALL

Answers

For 15 multiply 5000 by 2000
For 16 multiply 11 by 15
I don’t know the others sorry
13) ron ran 4828 kilometers
14) it can hold up to 24000 milliliters
15) the area is 10000000 mm
16) he would need up to 9-ish cans of paint

The diameter was of four half circles are sides of a square with a side length of 7 cm.
Find the exact area of the shaded region in terms of pi. (Please show work)

Answers

Answer:

  shaded area = 24.5π -49

Step-by-step explanation:

The area of a segment of a circle is given by the formula ...

  A = 1/2r²(θ -sin(θ))

Here, the radius of the circle is (7 cm)/2 = 3.5 cm, and the angle of interest is π/2 radians.

There are 8 segments of this size in the shaded area, so we have ...

  shaded area = 8(1/2)(3.5 cm)²(π/2 -sin(π/2))

  shaded area = 24.5π -49

Rubin is 5 years older than one third Terry’s age. Sheldon is three years younger than 2 times Rubin’s age. Define a variable and write an expression to represent Rubin’s age. Then find Rubin age and Sheldon age if Terry is 6 years old.

Answers

Let Terry's age be x

Terry = x

Rubin is 5 years older than one third Terry’s age
Rubin = 5 + 1/3x

Sheldon is three years younger than 2 times Rubin’s age. 
Sheldon = 2(5 + 1/3x) - 3

If Terry is 6, 
Rubin = 5 + 1/3(6) = 5 + 2 = 7
Sheldon = 2( 5 + 1/3 (6)) - 3 = 11

Ans: Rubin is 7 and Sheldon is 11
Ruby is 7 Sheldon is 11

A parallelogram is symmetric with respect to either diagonal. true or false?

Answers

it is true as parallelograms are symmetrical on all edges

Not all parallelogram is symmetric with respect to either diagonal, therefore the answer is False.

A parallelogram is known as a quadrilateral (having four sides) with two pairs of parallel-lateral lines. A parallelogram has no line of symmetry but there are some exceptions to specific types of parallelograms. For example:

Rhombus is a special type of parallelogram and it has two lines of symmetry along its diagonals.

A rectangle has two lines of symmetry going through the mid-point of the opposite sides.

A square has four lines of symmetry with two lines going through the diagonal and two lines going through the opposite sides.

Therefore, we can conclude that not all parallelogram is symmetric with respect to either diagonal.

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find the value of this pronumeral

Answers

A straight angle measures 180º. 
A triangle's interior angles also measure 180º.  
The angle measuring 130º is complementary to the corresponding interior angle, so that interior angle plus 130 has to equal exactly 180º. 
180 - 130 = 50º 
45 + 50 = 95º, so subtract that from 180 to find the measure of the last interior angle of the triangle. 
180 - 95 = 85º 
That angle of 85º is complementary to the other outside angle, n, and to find that subtract 85 from 180. 
180 - 85 = 95º 
n = 95 
Hope this helps!

A formula is expressed as d=a(2+kt). Express k in terms of d, a and t

Answers

To make it simpler, distribute a to (2+kt):

d = 2a + akt

Move 2a to the other side:

d - 2a = akt

Divide both sides by at:

d - 2a/at = k

Megan buys 3 bracelets and 3 necklaces each bracelet cost in dollars of one necklace?

Answers

If you are asking for us to check your work then you are correct the answer for one necklace is $7
First make an equation for her purchase. 5 bracelets $3 each = $15. the total is 36 since she pays $40 and gets $4 back, 40-4=36. 3 can represent the 3 necklaces and x is the price of each (3x). 
Here's our equation: 3x+15=36
Now solve: First subtract 15 from both sides of the equation to keep it balanced and to separate the variable from the constants. 
3x+15-15=36-15
3x=21
Next divide both sides by 3.
3x/3=21/3
x=7
You can check if this is right by going back to the word problem. 3 bracelets $5 each = 15. 3 necklaces $7 each = 21. 21+15=36. If she pays $40, 40-36-= $4 in change.
Each necklace is $7

The Running Shoe Company advertised that tbe would award a number of prizes equal to 1% of the total number of entries in a contest .They received 1,600 entries .How many prizes should they award?

Answers

1600(total entries)*.1(amount awarding)=160(amount that they need to give out)

The Running Shoe Company should award 16 prizes, as 1% of 1,600 entries is 16.

The student asked, "How many prizes should The Running Shoe Company award if they received 1,600 entries in a contest and they award a number of prizes equal to 1% of the total number of entries?"

To find the number of prizes, we need to calculate 1% of 1,600 entries.

Step 1: Convert the percentage to a decimal by dividing by 100. So, 1% becomes 0.01.

Step 2: Multiply the total number of entries by 0.01 to find 1% of it.
1,600 entries * 0.01 = 16 prizes

Therefore, The Running Shoe Company should award 16 prizes.

What's 2x+3y=6 and x-3y=9?

Answers

Set up a system of equations:

2x+3y=6
x-3y=9

You can solve this with elimination by adding the two equations together:

3x+0y = 15
3x=15
x=5

Then, plug this value back into either of the original equations to find the y value:

5-3y=9
-3y=4
y= -4/3

The point of intersection is (5,-4/3)

Could u help me with 8 and 10

Answers

When we solve equations with variables on both sides, the goal is to get one variable on one side by itself. As shown in the attached example, the first step is to distribute. Then, we carry the variable over to one side. Then solve one step equation as normal.

What are the zeros of the quadratic function f(x)=8x^2-16x-15

Answers

Answer:

x=2.69,−0.69

exact :

4±√46/4

A spinner that has 4 equal parts that are the colors blue, green, red, and yellow. The spinner is spun 12 times. It lands on blue 1 time.

Part A) What is the experimental probability of the spinner landing on blue?

Part B) Compare the experimental and theoretical probabilities of the spinner landing on blue. If the probabilities are not close, explain a possible reason for the discrepancy.

Answers

The expiremental probability would be 1/4 and the theoretical would be the same thing ecept you multiply by the number of times

Answer:

The experimental probability would be 1/12 and the theoretical probability would be 1/4. The probabilities were not close so a possible reason for the discrepancy would be the blue color on the spinner was slippery.

Step-by-step explanation:

So to start out you need to find out the experimental probability. If the spinner landed on blue 1 time out of 12 different times, you write that as a fraction of 1/12. So 1/12 is the experimental probability. It also asks for the theoretical probability. There are 4 parts of the spinner so 4 is the denominator, one of those possibilities is the one we want so 1 is the numerator, so the theoretical is 1/4. The probabilities were not close so a possible reason for the discrepancy would be the blue color on the spinner was slippery.

Just to tell you what theoretical and experimental probabilities mean is that the theoretical is the possible outcome before you do it. Experimental is where you judge your probability off of past events.

what is the sum of 5/10 and 5/100

Answers

First, we get common denominators:
50/100 + 5/100
so the answer is 55/100
a simplified version is 11/20
in decimal form it would be .55 and in fraction form it would be 11/20.
hope this helped! :p

Round 2,406,251 to the nearest thousand.
A. 2,000,000
B. 2,406,000
C. 2,406,300
D. 2,407,000

Answers

2,406,251 rounded to the nearest thousand is b. 2,406,000.

Hope this helped☺☺
B is the awser to your qwestion sir
 

You sell lemonade for $2 per cup and orange juice for $3 per cup. You sell a total of 100 cups for $ 240. How many cups of lemonade and orange juice were sold ?

Answers

240/2 = 120 cups of lemonade
240/3 = 80 cups of orange juice
Lemonade:
From the given information,you can write an linear equation like this:
$2x + $3(100 - x) = 240
First, you have to distribute them = 2x + 300 - 3x 
Then, you have to add like terms = 1x + 300=240
Next, you have to transpose 300 to the left = -1x = 300 - 240
So, you have to subtract = -1x = -60
And, you solve = -60 = -60 So x = 60
60 cups of lemonade sold

Orange:
100 - x = 100 - 60 = 40 cups of orange juice sold
So you can check our answer by using the original linear equation
2x + 3( 100 - x) = 240 2(60) + 3 (100 - 60) = 240 120 + 3(40) = 240 120 + 120 = 240 240 = 240

Hope this helps! ;)

Use the formula A=bh , where A is the area, b is the base length, and h is the height of the parallelogram, to solve this problem.

Brittany is painting a mural on one of the walls in her room. The mural is in a parallelogram-shaped frame. The area of the mural is 1056 in² and the base is 32 inches.

What is the height of the mural?



Enter your answer in the box.


[___] in

Answers

1056=32
1056/32

The answer is 33 in.

The area of the mural is 1056 in² and the base is 32 inches. We have to determine the height of the mural.

Area of parallelogram = [tex] b \times h [/tex]

where 'b' is the base and 'h' is the height.

1056 [tex] in^{2} [/tex] = 32 [tex] \times h [/tex]

[tex] h=\frac{1056}{32} [/tex] in

Therefore, the height of the mural is 33 inch.

there were 170 people at the concert. If 85% of the seats were filled how many seats are in the auditorium

Answers

In order to compute for the number of seats available in the auditorium, you just have to divide the number of people at the concert with the percentage of its utilized capacity.

Solution:

170 people / 85% = 200 seats available in the auditorium

To check the answer:

200 seats x 85% = 170 people are in the concert

There are 200 seats in the auditorium. 170 / 0.85 = 200. 

please help Use the expression 8a + 16c.

Part A
Factor the expression using the GCF.
A. 2(4a + 8c)
B. 4(2a + 4c)
C. 8(a + 2c)
D. 16(12a + c)


Part B
What is the value of the expression when a = –5 and c = –1? Enter your answer in the box.

Answers

Part A.

C. 8 (a + 2c)


Explanation:
The answer is c because when you have this equation (below) you have find what both numbers are divisible by:


[tex]8a + 16c[/tex]

Both of these numbers are divisible by 8 (This number would be on the outside of the parenthesis).


[tex] \frac{8a}{8} + \frac{16c}{8} [/tex]

Now that you know they're both divisible by 8 you can start to put together your equation. So far you should have this:

8 (? +?)

Now to find the other numbers you have to think... what number multiplied by 8 will make it equal to 8a? The answer would be a. 8 times a = 8a. (Another way to do this is to just divide 8a by 8 same with 16)

Now your equation should look like this:

8 (a + ?)

Now do the same thing with the 16c as you did with the 8a. (either divide 16c by 8 or think of a number times 8 that will make it equal 16c) For this one I'm going to use the division method - so what is 16c ÷ 8? 16 ÷ 8 = 2 and finally just add the c. So your answer is 2c.

Your equation should not look like this:

8 (a + 2c)

You're done!



Part B.

-56


Eplanation:
To find this just plug in the numbers into the equation. a = -5 and c = -1.
For this I used the original equation :


[tex]8a + 16c[/tex]

Plug in the numbers....


[tex]8( - 5) + 16( - 1)[/tex]

And solve!


[tex] - 40 + - 16[/tex]

And finally....


[tex] - 40 + - 16 = - 56[/tex]

So the value of the equation if a were -5 and c were -1 would be -56!

The required expression is C. 8(a + 2c) and value of the expression when a = –5 and c = –1 is -56.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Given the expression is

8a + 16c.

To find the Factor form of the given expression by using GCF.

We have,

8a + 16c.

Factors of each term:

8a = 2 x 2 x 2 x a

16c =  2 x 2 x 2 x 2 x c

The common factors are 2, 2 and 2. then Taking out the greater common factor (GCF) in the given expression;

GCF = 8

The answer is C. 8(a + 2c)

when a = –5 and c = –1

Then;

8(a + 2c)

8(-5 + 2(-1)) = 8 (-7) = -56

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Deyonne made 25% more cookies than Cameron. They sold the cookies for $0.50 each. Let x represent the number of cookies Cameron made. Which of the following expressions represent possible revenue from the sales. Select all that apply.
.50[x+(x+.25x)]
.50(x+.25x)
.50(x+1.25x)
.50(.75x+x)
.50(1.75x)
.50(2.25x)

Answers

.50[x+(x+.25x)]
.50(x+1.25x)
.50(2.25x)

State the geometric sequence both recursive and explicit formulas.

Answers

here you go i hope this helps you out :)

Answer:

recursive formula = [tex]a_{n} = a_{n-1}* r[/tex]

explicit formula: [tex]a_{n} = a_{1}*r^{n-1}[/tex]

Step-by-step explanation:

Thinking process:

Let a sequence be given as:

3   9    27    81

As can be observed from the sequence, the next number of the sequence is a multiple of 3, that is 9 is a multiple of 3. Similarly, 27 is 9 multiplied by 3

then, let the first term be a. the common multiplying factor will be r (in this case 3). Then the formula will be [tex]a_{n} = a_{n-1}*r[/tex]

In addition, the powers rule applies.

For instance:

9 = [tex]3^{2}[/tex]

27 = [tex]3^{3}[/tex]

81 = [tex]3^{4}[/tex]

Then the explicit formula will be [tex]a_{n} = a_{1}*r^{n-1}[/tex]

Henry used benchmark fraction to compare the lenghts of grasshoppers 5/8 and 7/4. Which grasshopper is longer? Explain.

Answers

------------------------------------------------------
Change the denominators to be the same
------------------------------------------------------
5/ 8 = 5/8
7/4 = 14/8

Since the denominators are the same, the larger the numerator, the larger the fraction. Therefore 14/8 (7/4) is greater than 5/8. 

14/8 > 5/8
7/4  >  5/8

---------------------------------------------------------------------------------
Answer: The grasshopper that is 7/4 unit long is longer
---------------------------------------------------------------------------------
 The grasshopper that is 7/4 unit long is longer






hope I had helped

12t-2<-5t+36 solve for t

Answers

Answer:

t<38/17

t < 2 4 /17

Step-by-step explanation:

Add 5t to each side

12t+5t-2<-5t+5t+36

17t-2<+36

Add 2 to each side

17t-2+2<+36+2

17t <38

Divide by 17

17t/17 <38/17

t<38/17

t < 2 4 /17

What is the solution of the equation y=5x+50

Answers

Y=5x+50
X=0

Y= 50
Hope this help
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