I need help on these questions. They confuse me.

I Need Help On These Questions. They Confuse Me.

Answers

Answer 1

The graphic solution for each system of equations is given as follows:

20. (5/3, 28/3).

21. (0.205, 3.846).

22. (-1/2, -5/2).

23. (-4.615, 7.462).

How to solve a system of equations graphically?

The graphic solution of a system of equations is given by the point of intersection of all the equation that compose the system.

For this problem, the systems are composed by functions of the first degree, hence they are linear functions.

For each system, the graph is traced, and then the point of intersection is identified on the graph given at the end of the answer.

Each system is traced on a different color, as follows:

System 20: red.System 21: black.System 22: green.System 23: blue.

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I Need Help On These Questions. They Confuse Me.

Related Questions

Can you help me with this

Answers

Answer:

y = 3/2x - 3

Step-by-step explanation:

first find slope (m):

m = (-3/2 -(-15/2)) / (1 - (-3)) = (12/2) / 4 = 6/4 = 3/2

plug the point (1, -3/2) into the point-slope form (y-y1) = m(x-x1):

y - (-3/2) = 3/2(x-1)

y + 3/2 = 3/2x -3/2

now put it in slope-intercept form y = mx + b:

y = 3/2x -6/2

y = 3/2x - 3

Which of the following is a chord

Answers

A and B

A chord connects two points on a circle which means it is a line segment and not a line

If you have more expenses than income, which is NOT a good way to balance your budget?

A-Decrease income.
B-Increase income.
C-Decrease expenses.
D-Borrow money with a repayment plan.

Answers

a d

.....................................................

I need this question Yoo lmk if you get it thank you. A or D

Which circles have an area less than 300 square centimeters? Select all that apply.

A circle with a radius of 9.5 centimeters.
A circle with a radius of 10 centimeters.
A circle with a radius of 10.5 centimeters.
A circle with a diameter of 15 centimeters.
A circle with a diameter of 25 centimeters.

Answers

Answer:

A, b, d

Step-by-step explanation:

help ! i should really pay attention in class

Answers

Answer:

I think its b

Step-by-step explanation:

A Quadratic polynomial whose zeroes are 5 and -2 is
x² + 5x - 2
x² + 3x + 10
x² - 3x - 10
x² - 2x + 5
I will Mark Brainliest Answer​

Answers

x

2

−3x−10

x

2

−(5x+x)−10

x

2

−5x+2x−10

x(x−5)+2(x−5)

(x−5)(x+2)

x=5

x=−2

sumofzeroes

=αβ=5×−2=−10

α+β=

9

−b

=−

1

(−3)

=3

productofzeroes

=αβ=5×−2=−10

αβ=

a

c

=

1

−10

=−10

proved

________________________

mark me brainliest........proved

On a map, 1 inch equals 15 miles. Two cities are 5 inches apart on the map. What is the actual distance between the cities? The actual distance between the cities is miles.

Answers

Answer:

75 miles

Step-by-step explanation:

You have to just multiply 15 by 5.

1*5 inches=15*5 miles

Help please


Work out

A) 4/5 of 30

B) 2/9 x 45

C) 24 x 1/6

Answers

Answer:

A) 24

B) 10

C) 4

Step-by-step explanation:

i multiplied for each question

bonjour svp aide moi

Exercice 7: mon et nop sont deux angles adjacents supplémentaires tel que mOn = 60°.

1°) Calculer nOp.​

Answers

Answer:

n0p = 120°

Step-by-step explanation:

m0n + n0p = 180°

60° + n0p = 180°

n0p = 120°

Line r is parallel to line c.

Which angle is congruent to < 3

A. <2
B. <4
C. <5
D. <6

Answers

Answer: C. <5

Explanation: They are on the same line meaning that they should share the same degree of angle, especially because they are opposite sides of the same line.

Are these lines parallel,perpendicular or neither ? Y=(-4/3)xt18y=(4/3)x-6

Answers

Answer:

neither

Step-by-step explanation:

when slopes are the same its parallel

when slopes are multiplied and it equals -1 they are perpendicular

help please!! this is for tonight, I don't know how to use the "undefined" please help

Answers

The equation of the line in slope-intercept form, with the point (4, -5) and an undefined rate of change is x = 4.

What is the slope-intercept form?

Mathematically, the slope-intercept form of a line can be calculated by using this equation:

y = mx + c

Where:

m represents the slope or rate of change.x and y represents the data points.c represents the y-intercept.

In Mathematics, any line that has an undefined slope (rate of change) is a vertical line because it does not have a y-intercept. This ultimately implies that, a vertical line that is parallel to the y-coordinate (y-axis) would have an undefined slope (rate of change).

Generally speaking, the equation of a line that has an undefined slope (rate of change) is given by this mathematical expression;

x = a

Where:

a represents the x-intercept.

At point (4, -5), the required equation with an undefined slope (rate of change) is x = 4.

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Which compound inequality is equivalent to the absolute value inequality 161 > 6?

Answers

Answer:

option D

Step-by-step explanation:

Answer:

b < –6 or b > 6

Step-by-step explanation:

Please help. This is the last problem from my homework.

Answers

Step 1 - distributive property
Step 2 - distributive property
Step 3 - commutative property (changed order)

Which expression is modeled by this set of arrows on the number line?

Answers

On solving the provided question, we can say that - here in number line we jump fron 2 to 7 as we have added +5

what is number line?

A number line is a visual representation of real numbers used in introductory mathematics. It is an image of a magnitude line. On the number line, each point represents a real number, and each real number is taken to represent a point. Increments on a number line are separated by equal distances. You can only respond to the numbers on a line in the manner indicated by those numbers. How the number is utilized is determined by the question that goes with it. B: Make a point.

here,

we have +5

so 2+(+5) = 7

we will jump to 7 from 2

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PLEASE HELP! WILL MARK BRAINLIST!
find the unknown side length, X. round your answer to the nearest tenth.
A) 15
B) 15.8
C) 24.3
D) 16.7

Answers

Answer:

x = 15.8

Step-by-step explanation:

What is the relationship between points and lines?

Answers

Answer:

Points identify starting and ending positions, and a line (in this case line segment) connects such points to show the distance between the two points.

Step-by-step explanation:

8^x/2 divided by 4^x/3 equals 2^-5/2

Answers

The solution to the exponential equation 8^(x/2)/4^(x/3) = 2^(-5/2) is given as follows:

x = -6/5.

How to solve the exponential equation?

The exponential equation for this problem is defined as follows:

[tex]\frac{8^{\frac{x}{2}}}{4^{\frac{x}{3}}} = 2^{-\frac{5}{2}}[/tex]

Both 8 and 4 are powers of 2, as follows:

8 = 2³.4 = 2².

Applying the power of power rule (multiplying the exponents), the expression on the left side can be rewritten as follows:

[tex]\frac{2^{\frac{3x}{2}}}{2^{\frac{2x}{3}}} = 2^{-\frac{5}{2}}[/tex]

When two terms with the same base and different exponents are divided, we keep the base and subtract the exponents, hence:

[tex]\frac{2^{\frac{3x}{2}}}{2^{\frac{2x}{3}}} = 2^{\frac{3x}{2} - \frac{2x}{3}}[/tex]

The subtraction is obtained as follows:

3x/2 - 2x/3 = 9x/6 - 4x/6 = 5x/6.

(as the least common factor of 2 and 3 is of 6).

Then the simplified expression is of:

[tex]2^{\frac{5x}{6}} = 2^{-\frac{5}{2}}[/tex]

As the exponential function y = 2^x is injective, the solution is obtained as follows:

5x/6 = -5/2.

10x = -12

x = -6/5.

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If the m<1 = 17x - 30, and the <2 = 7x + 18, what is the value of x?

Answers

The value of x is 8.

What are supplementary angles?

Angles are formed whenever two or more straight lines intersect. These angles produced thus have individual and some common properties of which some can add up to form complementary angles, or supplementary angles.

Two angles are said to be supplementary if the value of their sum add up to 180^o.

From the given question, we can deduce that;

m<1 + m<2 = 180^o              (definition of complementary angles)

(17x - 30) + (7x + 18) = 180^o

17x - 30 + 7x + 18 = 180^o

24x - 12 = 180

24x = 180 + 12

24x = 192

x = 192/ 24

  = 8

x = 8

The value of x is 8.

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66. Mechanical Engineering A crossed belt connects
a 10-centimeter pulley on an electric motor with a
20-centimeter pulley on a saw arbor (see figure). The
electric motor runs at 1700 revolutions per minute.

(c) Let L be the total length of the belt. Write L as
a function of o, where is measured in radians.
What is the domain of the function? (Hint: Add the
lengths of the straight sections of the belt and the
length of the belt around each pulley.)

Answers

On solving the provided question, we cans ay that - the value of the each unit in this time will be from unitary method is 85.

What is unitary method ?

The unit technique is an approach to problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. The unit method, to put it simply, is used to extract a single unit value from a supplied multiple. For instance, 40 pens would cost 400 rupees, or the price of one pen. The process for doing this may be standardized. a single country. anything that has an identity element. (mathematics, algebra) (Linear algebra, mathematical analysis, mathematics of matrices or operators) Its adjoint and reciprocal are equivalent.

here,

value of the 20 unit is 1700

value of the each unit will be 1700/20 = 85

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What are the 3 types of terms in quadratic equation?

Answers

The 3 types of terms in quadratic equation:

1) quadratic term,

2) linear term,

3) constant term.

We know that the second degree algebraic equation in x is a quadratic equation.

The standard form of quadrtic equation is ax^2 + bx + c = 0, where a, b, c are integers.

As thise is a quadratic equation, the value of a can not be zero. a ≠ 0

The term ax^2 is called the quadratic term.

From this term, the name given to the equation(quadrtic equation)

The term bx is called the linear term.

And the term c is called the constant term.

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helpppp plsss its due tonight !!

Answers

Answer: D.

Step-by-step explanation:

1. Look at the range/IQR of each box-plot

2. The smaller the range = the less variability

There are 18 counters divided equally among 3 groups. How many counters are in each group?

Answers

6. 18 divide by 3 is 6. hope this helps!
The answer is 6. Eighteen divided by three is six.

Help me please please no links

Answers

Answer:

the first bubble is your answer hope it helps

2 of 10
x
Colin buys a car for £27900.
It depreciates at a rate of 3% per year.
How much will it be worth in 2 years?
Give your answer to the nearest penny where appropriate.

Answers

Answer:

Below

Step-by-step explanation:

3% loss means 97% (.97 in decimal ) remains

after 2 years :

 27 900 ( .97)^2 = £  26251 .11

Find the measure of angle A.
110°
O 80°
O 105°
O 30°
O100°
14 + 6x
A
3x-3

Answers

Answer:

[tex]80^{\circ}[/tex]

Step-by-Step Explanation:

The interior angles of the triangle are [tex]70^{\circ}, (14+6x)^{\circ}[/tex], and [tex](3x-3)^{\circ}[/tex].

Angles in a triangle add to [tex]180^{\circ}[/tex].

[tex]70+14+6x+3x-3=180 \\ \\ 81+9x=180 \\ \\ 9x=99 \\ \\ x=11[/tex]

So, [tex]m\angle A=14+6(11)=80^{\circ}[/tex].

7. A triangle has sides with lengths 7, 24, and 25. (Lesson 4-5)
a. Verify this is a Pythagorean triple.
b. Approximate the acute angles in this triangle.

Answers

A triangle has sides of 7, 24, and 25 cm. The length of the hypotenuse is equal to 25 cm if the triangle is a right triangle.

What are the angles of a 7/ 24/ 25 triangle?

The triangle's sides are 7 cm, 24 cm, and 25 cm, as is obvious.

49, 576, and 625 are the results of squaring the lengths of the side of the.

49 + 576 = 625\s(7)2 + (24)2 = (25)2

As a result, the aforementioned equation satisfies Pythagoras's theorem. As a result, it is a right-angled triangle.

the hypotenuse is 25 cm long.

Angles of 16.26 degrees and 73.74 degrees are suitable.

Yes, since 72+242=252 (sum of squares on smaller two sides equals square on largest side).

The triangle's sides are 7 cm, 24 cm, and 25 cm, as is obvious. 49, 576, and 625 are the results of squaring the lengths of the side of the. As a result, the aforementioned equation satisfies Pythagoras's theorem. As a result, it is a right-angled triangle.

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Subtract (7x+5)-(3x+2)?

Answers

Answer:

Step-by-step explanation:

original equation equivalent to 7x+5-3x-2 = 7x-3x+5-2=4x+3

the answer is 4x+3

Answer:

The answer is 4x+3

What does 4 more than mean?

Answers

Answer:

+4

Step-by-step explanation:

if x is your number, then x+4 is four more than

Answer:

Answer Below

Step-by-step explanation:

The phrase "4 more than" means 4 has been added onto a number. Eg:"Sue has 4 more sweets than Ann, means that however many sweets Ann has, Sue's number is bigger by 4.

I'm need help asap! i dont get the question, i would appreciate it if somebody could help me( giving brainilest & 20 points)!!!

Look at picture below

Answers

Answer:

81/100 is the answer I believe if I'm wrong my bad

Answer:

81/100

Step-by-step explanation:

brainliest pls

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