Using the matrix solver on your calculator, find the solution to the system of

equations shown below.

3x - 5y = 16

2x - 7y= 7

O

A. x = 1, y= 7

O

B. No solution

O

c. More than 1 solution

O

D. x = 7, y= 1

Answer:

8*15 + 3*5

Step-by-step explanation:

The CD's are 15 dollars each

She buys 8

8*15

The tapes are 3 dollars each

She buys 5

3*5

Add them together

8*15 + 3*5

Answer:

Step-by-step explanation:

Yes it is

Answer:

yes

Step-by-step explanation:

because a square has two pairs of parallel sides, four right angles, and all four sides are equal. It is also a rectangle and a parallelogram. A rhombus is defined as a parallelogram with four equal sides.

also can u plz mark me as brainliest ;w; ^w^

Answer:

± 14.

Step-by-step explanation:

If we plug √196 into the calculator, we get 14.

However, every square contains a negative square root as well since multiplying two negative numbers together results in a positive number.

Therefore:

Both 14 × 14 and -14 × -14 are equal to 196.

Answer: $19.5

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Volume of a rectangular prism = width x length x height

Replacing with the values given:

Since 1= 1/12 foot

36 in /12 = 3 foot  (length and wifth)

4 in /12 = 1/3 foot  (height)

V = 3 x 3 x 1/3 = 3ft3

Next, we multiply it by 2 (since there are 2 sections):

3 x 2 = 6 ft3

Finally we multiply it by the cost of each cubic foot:

6 x 3.25 = $19.5

Feel free to ask for more if needed or if you did not understand something.

Answer:

210 cm³

Step-by-step explanation:

The formula for the volume of a rectangular prism is:

V = lwh

where l is the length, w is the width, and h is the height

Let's substitute the given values into this equation:

V = lwh

V = (5)(6)(7)

Multiply:

V = (5)(6)(7)

V = (30)(7)

V = 210

Therefore, the volume of the prism is 210 cubic centimeters.

Answer:

the first one

Step-by-step explanation:

The correct option is B, k || n and n ⊥ m statement is true regarding the parallel and perpendicular lines in the diagram.

A coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements.

Parallel lines are lines in a plane that are always the same distance apart.

The perpendicular lines are two lines that intersect each other and the angle formed between the two lines should be equal to 90 degrees

When the distance between the lines is constant then the lines are called parallel lines.

The lines do not intersect when they are separated from each other. And the slope of the lines is equal.

In the graph, the line k is parallel to the line n and the line n is perpendicular to line n.

k || n and n ⊥ m.

Hence, the correct option is B, k || n and n ⊥ m statement is true regarding the parallel and perpendicular lines in the diagram.

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Answer: Mean = 52.8 mins

Step-by-step explanation:

We have lapses of 30 minutes, so we can write the average for each, this means that:

0 < t < 30 can be averaged to the middle of the range: 15 min.

Doing this, we have that:

7 students 15 min

27 students 45 min

12 students 75 min

4 students 105 min.

Now we can calculate the mean:

mean = (x1*n1 + x2*n2 + ...)/N

where x1 is the amount of time 1, and n1 is the number of students associated to that time and so on. N is the total number of students

Mean = (7*15min + 27*45min + 12*75min + 4*105min)/(7 + 27 + 12 + 4)

Mean = 52.8 mins

Answer: D

Step-by-step explanation:

All of it’s angles are equal

Answer: A:Parrallelogram

Step-by-step explanation:

Answer:

d y = 2x+3

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

There are 15 numbers of chicken and 25 numbers of bulls.

Step-by-step explanation:

The pen had chickens and bulls.  The pen contains 40 animals in total. The number of legs in the pen is 130 .

Let

a = number of chicken

b = number of bull

a + b = 40................(i)

A chicken has 2 legs and a bull has 4 legs.

The total legs can be represented as

2a + 4b = 130...........(ii)

combine the equation

a + b = 40................(i)

2a + 4b = 130...........(ii)

a = 40 - b

insert the value of a in equation(ii)

2(40 - b) + 4b = 130

80 - 2b + 4b = 130

80 + 2b = 130

2b = 130 - 80

2b = 50

divide both sides by 2

b = 50/2

b = 25

Insert the value of b in equation (i)

a + b = 40

a + 25 = 40

a = 40 - 25

a = 15

There are 15 numbers of chicken and 25 numbers of bulls.

Answer:

x= 6°

Step-by-step explanation:

∠DEF +∠EFD= ∠EDG

(ext. ∠= sum of int. opp ∠s)

9x +7° +70°= 21x +5°

21x -9x = 77° -5° (bring x terms to one side)

12x= 72° (simplify)

x= 72° ÷12

x= 6° (simplify)

Answer:

x = 58

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the opposite interior angles

114 = 56+x

Subtract 56 from each side

114 -56 = x

58 = x

Answer:

40 hours

Step-by-step explanation:

9x + 40 = 400 (with x being how many hours she has worked). We get rid of the 40 on both sides by subtraction. Our new equation is 9x = 360. Now we divide 9 on both sides and we learn that x = 40.

for me the answer to that is c

Answer:

424

Step-by-step explanation:

pie r squared is area of a circle

21(squared)x3.14=1385

minus this from 24squaredx3.14 =1809

1385-1809=424

The area of the sidewalk is 226.08 m²

Area is defined as the total space taken up by a flat (2-D) surface or shape of an object.

The space enclosed by the boundary of a plane figure is called its area.

The area of a figure is the number of unit squares that cover the surface of a closed figure.

Area is measured in square units like cm² and m².

Given that, a circular flower bed is 21 m in diameter and has a circular sidewalk around it that is 3 m wide. We need to find the area of the sidewalk.

To find the same, we will subtract the area of the inner circular region from  the outer circular region,

The radius of the outer circular region = 21/2+3 = 10.5+3 = 13.5 m

The area of the sidewalk = πR²-πr², where R = radius of outer region and r = radius of inner region

= 3.14(13.5²-10.5²)

= 3.14 x 72

= 226.08 m²

Hence, the area of the sidewalk is 226.08 m²

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Answer:

Pls attach an image

Step-by-step explanation:

Press the paperclip and attach an image

Hope this helps!!!

Answer:

A) 900

B) 5400

C) 3600

Step-by-step explanation:

A) Number of 4 digit multiples of 5:

(9999-1000+1)/5= 1800

[I added one to the 9999-1000 because it includes 9999]

Now, out of those 1800 numbers that are divisible by 5, 900 of them are even. (so they are divisible by 10 [or 5 and 2])

Therefore, the answer to A is 900

B) Number of 4 digit multiples of 2:

(9999-1000+1)/2= 4500

This means that there are 4500 even 4 digit numbers.

We have already figured out that there are 900 numbers that are divisible by both 5 and 2. 1800-900=900 4-digit numbers that are not divisible by 2, but are divisible by 5.

So if we add the 4500 (numbers that are divisible by 2) and the 900 (numbers that are only divisible by 5, but not 10), we get 5400.

C) There are 9999-1000+1= 9000 4-digit numbers. We know that there are 5400 numbers that are divisible by either 5 or 2, so 9000-5400=3600

Feel free to ask any questions! :)

Answer:

Yeet so you can give him

Step-by-step explanation:

Answer:

add to eliminate y

Step-by-step explanation:

Because the one y is negative, you would add it to the positive y to eliminate both. A positive plus a negative is the same as subtracting from the positive number.

ex: [tex]10+-5=5[/tex] because [tex]10-5=5[/tex]

hope this makes sense :)

Answer:

Add to eliminate y

Step-by-step explanation:

This is because you'll want to add

-4x -9y = 26

8x +9y = -34

to get rid/eliminate the y

The reason why it's not subtract it because the it'll become

-4x-9y=26

-8x-9y=34

which makes the y-values not the reciprocal of each other and you wouldn't be able to eliminate the y.

And it's neither of the add or subtract to eliminate x because the numbers need to be the same numbers and reciprocal of each other

ex:

4 and -4

or

8 and -8

or

-10 and 10

Brainiest please

Answer:

2

Step-by-step explanation:

2(-1)(-2)(-1)+3(3)-3= 2

Hope this helps you

Congruent sides, so isosceles triangle.  When we have an isosceles triangle the bisector of angle A is a perpendicular bisector of BC with foot D.   So x=ADB=90 degrees.

Angle B is 47 degrees and angle y=BAD is complementary, the other acute angle in a right triangle.

y = 90 - 47 = 43

Answer: x=90, y=43

Answer:

A. 15 sq in

Step-by-step explanation:

So it wants to know the area of the yellow face: we have to subtract that chunk cut out of the bottom right from the larger rectangle.

Area = length x width = 4*4 = 16 sq in. This is the area of the larger rectangle.

Area = length x width = 1*1 = 1 sq in. This is the area of the rectangle that's cut out of the yellow area.

16 - 1 = 15 sq in

Answer: i feel like it's 15 length x width x height 4, 8, 12+3=15

Step-by-step explanation:

Answer:

50%

Step-by-step explanation:

For each line it represents 25% so half of the data is on the opposite side of 60.

Answer:

7/8

Step-by-step explanation:

sum = answer to an addition problem

This means we need to add.

To add fractions with like denominators, simply add the numerators, or the numbers above the fraction sign.

9/15 + 5/16

9 + 5 = 14

numerator = 14

Keep the denominator:

denominator = 16

14/16

Simplify:

(divide the numerator and denominator by 2)

14/2 = 7

16/2 = 8

7/8

Therefore, the sum is 7/8.

The sum of the two fractions shown of 9/16 and 5/16 is 7/8.

When adding fractions, if they have the same denominator, you can simply add up the numerators and keep the denominator.

This means that the sum of 9/16 and 5/16 is:

= (9 + 5) / 16

= 14 / 16

You then need to take this to its simplest form by dividing both the numerator and denominator by their highest common factor which is 2.

= (14 ÷ 2 ) / (16 ÷ 2)

= 7 / 8

In conclusion, the sum of these fractions is 7/8.

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Answer:

35 % are herbs

Step-by-step explanation:

7    = 35

20  = 100

Answer:

false

Step-by-step explanation:

Answer:

It is false

Hope this helps :)

Please mark me brainliest

Answer:

figure B is a scale 3:1 image of figure A

Step-by-step explanation:

9/3=3

15/5=3

12/4=3

scale 3:1

Hence triangle is scaled by multiple of 3.

When we talk of two triangles ABC and DEF, they are said to be scaled if both they follow [tex]\frac{A}{D}= \frac{B}{E} =\frac{C}{F}[/tex] where all sides have same common difference.

Let triangles with sides 12,15,9 be ABC and triangle with sides  4,5,3 be DEF.

Now A/D=12/4=3

similarly B/E=15/5=3

and C/F=9/3=3

Hence , triangle is scaled by multiple of 3.

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Answer:

b=3

Step-by-step explanation:

2a=3b and 4a+b=21,

Multiply the first equation by 2

2(2a) = 2*3b

4a = 6b

Substitute this into the second equation

4a+b = 21

Replace 4a with 6b

6b+b = 21

Combine like terms

7b = 21

Divide each side by 7

7b/7 = 21/7

b = 3

Answer:

the answer is 12 times

Step-by-step explanation:

to get from 2 to 6, you have multiply 2 by 3 for 6. so 4 times 3 is 12, and also just 6 times 2 can do it too!