Mathematics High School

Please help! Will give 10 points and brainliest to first...only need 2,4,6,8

Answers

Answer 1

Answer:

Step-by-step explanation:

2: 1:4 scale factor

4: 4/5 = x/15. 5x=60. x is 12

6: it's a 2:7 ratio. so x would be 8 and y would be 35

8... it's a 4:7 ratio, as both 52 and 91 are divisible by 13 so there's the scale factor

4/7=x+3/2x-1. 7x+21=8x-4

Like terms on both sides

x=25

Related Questions

PQRS is a parallelogram, m∠P=121∘ , and m∠S=(7x−4)∘ .

What is the value of x?

Answers

Answer:

Step-by-step explanation:

121+7x-4=180

7x-4=180-121=59

7x=59+4=63

x=63/7

x=9

It will be nice if you give me brainliest. Good luck!

Lilianna uses 3/4 calories per minute just by sitting. She uses 1 more calorie per minute by walking. Lilianna uses a total of 12 1/4 calories walking to the park. Lilianna uses the equation, d(3/4+1)=12 1/4 to represent the situation. what does the variable d represent in the equation?
A) Calories per minute Lilianna uses walking
B)Number of calories Lilianna would have used sitting
C) Number of minutes Lilianna walked
PLEASE HELP
12POINTS

Answers

Answer:

C) Number of minutes Lilianna walked

Step-by-step explanation:

Variable d represents the time per minute Lilianna spends in the park.
Step-by-step explanation:
Lilianna uses \frac{3}{4} calories per minute just by sitting. She uses 1 more calorie per minute by walking.
Liliana uses a total of 12\frac{1}{4} calories walking to the park.
Lilianna uses the equation, d(\frac{3}{4}+1)=12\frac{1}{4} to represent the situation.
Here, variable d represents the time per minute she spends in the park.
and is given as,
d(\frac{3}{4}+1)=12\frac{1}{4}
It can be written as,
d(\frac{3}{4}+1)=\frac{49}{4}
Solving for d,
d(\frac{3}{4}+1)=\frac{49}{4}
\Rightarrow d(\frac{3+4}{4})=\frac{49}{4}
\Rightarrow d(\frac{7}{4})=\frac{49}{4}
\Rightarrow d=\frac{49 \times 4}{4 \times 7}
\Rightarrow d=7
Thus, she spend d= 7 minutes total to the park.

2. The movie theater has three different sizes of popcorn containers. Enrique found the movie boring and wondered how much more space the larger boxes have for filling purposes. The volume of the popcorn containers in cubic feet are expressed in the
following table.
Size
Small
Medium
Large
Volume Function
s(x) = x3 + 5x2 + 10x + 64
m(x) = 3x3 + 2x2 - 4x - 10
1(x) = 5x3 - x2 + 23x + 2
Write a function d(x) to represent the extra space available in the large box when
compared to the small box. Then, determine the difference between d(x) and m(x).

Answers

Answer:

part one: 4x^(3)-6x^(2)+13x-62

part two: x^(3)-8x^(2)+17x-52

Step-by-step explanation:

a six pack of soda is on sale

Answers

Answer:

that is not complete you would need the starting price and the percentage

hope that helps good luck

Answer:

what's the question?

Step-by-step explanation:

i dont know cz u didnt put the question n only a lil bit of information

which of the following expression is NOT equivalent to -17 -(-5)?

A: 5+(-17)
B: -17-5
C:-17+5
D:-12

Answers

Answer:

The answer is B.

Reasoning:

-17 - (-5) = -12

A. 5 + (-17) = -12✔

B. -17 - 5 = -22 ✖

C. -17 + 5 = -12 ✔

D. -12 ✔

Answer:

B: -17+5

Step- by- step explanation

Please help
...................

Answers

Answer:

It is the third one!

Step-by-step explanation:

Given: Lines a and b are parallel and line c is a transversal. Prove: Angle2 is supplementary to Angle8 Horizontal and parallel lines a and b are cut by transversal c. On line a where it intersects line c, 4 angles are created. Labeled clockwise, from uppercase left, the angles are: 1, 2, 4, 3. On line b where it intersects line c, 4 angles are created. Labeled clockwise, from uppercase left, the angles are: 5, 6, 8, 7. What is the missing reason in the proof? Statement Reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Answers

Answer:

The correct option is;

Corresponding angles theorem

Step-by-step explanation:

Type of lines of lines a and b = Horizontal and parallel lines

The transversal to a and b = Line c

The angles between a and c labelled clockwise from the upper left quarter segment = 1, 2, 4 and 3

The angles between b and c labelled clockwise from the upper left segment = 5, 6, 8 and 7

Therefore, we have;

Statement [tex]{}[/tex] Reason

1. a║b, c is a transversal [tex]{}[/tex] Given

2. ∠6 ≅ ∠2 [tex]{}[/tex] Corresponding angles theorem

3. m∠6 = m∠2 [tex]{}[/tex] Definition of congruent

4. ∠6 is supp. to ∠8 [tex]{}[/tex] Definition of linear pair

5. ∠2 is supp. to ∠8 [tex]{}[/tex] Congruent supplement theorem

Corresponding angles are the angles located in spatially similar or matching corners of two lines that have been crossed by the same transversal. When the two lines having a common transversal are parallel, the corresponding angles will be congruent.

Aline crosses the coordinates (-4,4) and (2.-5). What is the slope
of the line?

Answers

Answer:

Step-by-step explanation:

Use the slope formula:

[tex]m = \frac{y2 -y1}{x2 - x1}[/tex]

where m = slope

Given the coordinates

(-4, 4) ---> this means x1 = -4 , y1 = 4

(2, -5) ---> this means x2 = 2 , y2 = -5

Substitute these values into the slope formula:

[tex]m = \frac{y2 -y1}{x2 - x1}[/tex]

[tex]m = \frac{-5 -4}{2 - (-4)} = \frac{-9}{2+4} = \frac{-9}{6} = \frac{-3}{2}[/tex]

The slope of the line passing through the coordinates (-4, 4) and (2, -5) is - 3/2.

What are lines and their slopes?

We know lines have various types of equations, the general type is

Ax + By + c = 0, and the equation of a line in slope-intercept form is

Answers

Answer:

20 + 5w

Step-by-step explanation:

20 + 5w

Were 20 is the amount she already has, and 5w is 5 times the unkown amount of weeks (w).

Pls consider marking me as Brainliest! It would mean a lot!

Answer: 5w + 20

Step-by-step explanation:

Because if she earns 5 every week that’s 5w and if she already had 20 that’s +20. So it’s 5w + 20 or 20+5w

If f(x) = 3x + 2, what is f(5)?

Answers

Answer:

f(5) = 17

Step-by-step explanation:

plug in 5 in the x so 3(5)+2 =17

Answer:

Step-by-step explanation:

3(5) + 2 = 17

15 + 2 = 17

Does anyone know the answer to question one: How many lawns will Dominic need to mow in order to make $240?

Answers

Answer:

Step-by-step explanation:

Which expression is equivalent to −3/4÷(−8/12)?
−3/4×8/12
3/4×(−8/12)
−3/4×12/8
3/4×12/8
NEED HELP ASAP!

Answers

Answer:

3/4 × 12/8

Step-by-step explanation:

The answer would be 3/4 × 12/8 because when multiplying two negatives, they become a positive. Also, when dividing fractions, you switch the denominator and numerator of the last fraction and multiply the first fraction by the new second fraction. (Example: In 1/2 ÷ 5/6, 5/6 becomes 6/5. Then, you multiply 1/2 by 6/5.)

The equivalent of the given expression will be the expression 3/4 x 12/8. Then the correct option is D.

What is an equivalent expression?

The equivalent is the expression that is in different forms but is equal to the same value.

Making anything easier to accomplish or comprehend, as well as making it less difficult, is the definition of simplification.

The expression is given below.

⇒ −3/4 ÷ (−8/12)

Simplify the expression, then the equivalent expression will be

⇒ −3/4 ÷ (−8/12)

⇒ −3/4 x (−12/8)

⇒ 3/4 x 12/8

The equivalent of the given expression will be the expression 3/4 x 12/8. Then the correct option is D.

More about the equivalent link is given below.

Answer:

144 minutes

Step-by-step explanation:

The equation will be 14 + 0.25x = 50

50 - 14 = 36

0.25x = 36

36/0.25 = 144 minutes

Two cables, with lengths of 40 feet and 35 feet, are tied from the top of a pole to stakes in
the ground. If the stakes are 30 feet apart, find the height of the pole.

Answers

Answer:

The height of the pole is 33.89 feet.

Step-by-step explanation:

Since the length of the cables are 35 feet and 40 feet respectively, the 40 feet cable being farthest from the pole. We know that they are 30 feet apart. This forms a scalene triangle in which the angle between the 40 feet cable and the distance apart of the cables ( or ground) is the angle of elevation of the pole from the 40 feet cable.

So, we use the cosine rule to find this angle of elevation. So,

b² = a² + c² - 2accosB where a = 40 feet , b = 35 feet, c = 30 feet and B = angle of elevation of top of pole from 40 feet cable.

cosB = (a² + c² - b²)/2ac

cosB = (40² + 30² - 35²)/(2 × 40 × 30)

cosB = (1600 + 900 - 1225)/2400

cosB = 1275/2400

cosB = 0.53125

B = cos⁻¹(0.53125)

B = 57.9°

Since we now have the angle of elevation of the top of the pole from the 40 feet cable, we now find the height h of the pole from

sinB = h/40 since the 40 feet cable, the ground and the pole form a right-angled triangle.

h = 40sinB

h = 40sin57.9°

h = 40 × 0.8472

h = 33.89 feet

So, the height of the pole is 33.89 feet.

Approximate the mean of the grouped data for the ages of the residents of a town.
The approximate mean age is years.
(Round to one decimal place as needed.)
Age
0-9
10-19
20-29
30-39
40-49
50-59
60-69
70-79
80-89
Frequency
57
73
39
65
60
47
37
13
18

Answers

Answer:

The mean age of the frequency distribution for the ages of the residents of a town is 43 years.

Step-by-step explanation:

We are given with the following frequency distribution below;

Age Frequency (f) X

0 - 9 30 4.5 135

10 - 19 32 14.5 464

20 - 29 12 24.5 294

30 - 39 20 34.5 690

40 - 49 25 44.5 1112.5

50 - 59 53 54.5 2888.5

60 - 69 49 64.5 3160.5

70 - 79 13 74.5 968.5

80 - 89 8 84.5 676

Total 242 10389

Now, the mean of the frequency distribution is given by the following formula;

Mean =

= = 42.9 ≈ 43 approx.

Hence, the mean age of the frequency distribution for the ages of the residents of a town is 43 years

Line JK passes through points J(–4, –5) and K(–6, 3). If the equation of the line is written in slope-intercept form, y = mx + b, what is the value of b?

–21
–4
11
27

Answers

Find the slope that passes between the points.

(y₂ - y₁) / (x₂ - x₁)

J(-4, -5)

K(-6, 3)

(3 - (-5)) / (-6 - (-4))

(3 + 5) / (-6 + 4)

8 / -2

-4

Now slap that slope into the formula and substitute on of the coordinates to the formula to solve for b (I'll take point K's coordinate):

y = mx + b

y = -4x + b

3 = -4(-6) + b

3 = 24 + b

3 - 24 = b

- 21 = b

b = -21

If the equation of the line is written in slope-intercept form, y = mx + b, then the value of b is -21 and is denoted as option A.

What is Slope?

This is also referred to as the gradient of a line and measures its steepness and direction.

Slope = (y₂ - y₁) / (x₂ - x₁)

Parameters

J(-4, -5) and K(-6, 3)

= (3 - (-5)) / (-6 - (-4))

= (3 + 5) / (-6 + 4)

= 8 / -2

= -4

Substitute one of the coordinates into the formula to solve for b

y = mx + b

y = -4x + b

3 = -4(-6) + b

3 = 24 + b

3 - 24 = b

b = - 21

Read more about Slope of a line here https://brainly.com/question/20848

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I need to find x and I can’t find it someone pls help me
Find X

Answers

Answer: y = 23 x = 28

Step-by-step explanation:

First find the value of y.

The angle (5y -4) and 3y forms a straight line which means that if you add them together they will equal 180 degrees. Add them and set them equation to 180 to solve for y.

5y-4 + 3y = 180

8y -4 = 180

+4 +4

8y = 184

y= 23

Since y is equal to 23, then input y into the expression (5y-4) to find the main angle value and then add it with the angle (2x+13) to equal to 180 degrees because they also form a straight angle.

5(23) - 4

115 - 4 = 111

111 + (2x + 13) = 180

124 + 2x = 180

-124 -124

2x = 56

x = 28

x is equal to 28 degrees.

Check.

111 + 2(28) + 13 = 180

111 + 56 + 13 = 180

180 = 180

which of the following is an equivalent form of the compound inequality -22>-5x-7>-3

Answers

Answer:

Step-by-step explanation:

Move all terms not containing x from the center section of the inequality.

False

Move all terms not containing the variable from the center section of the inequality.

No solution

Sorry, I couldn't fully understand your question but-

Hope This Helps!

Pls help What is 64% of 225?

Answers

Answer:

144

Step-by-step explanation:

Hi there !

64% of 225 =

= 64%×225

= 64/100 × 225

= 64×225/100

= 14400/100

= 144

Good luck !

The function y = -3x + 42 models the average number of dogs at an animal shelter, where x is the number of days after July 1. The
function y = 4x + 7 models the average number of cats at the animal shelter, where x is the number of days after July 1. After how many
days is the average number of cats and dogs at the shelter the same?

Answers

Answer:

27 days

Step-by-step explanation:

I put a picture of the graph for you.

I think the answer would be 27 days:)

How many solutions does the following equation have ?
-42 – 7 + 10x = -7 + 6x
Pls help and explain

Answers

the way you find the answer to this is by doing what’s below

-42 - 7 + 10x = -7 + 6x
-49 + 10x = -7 + 6x combine like terms
10x = 42 + 6x add 49 to both sides
4x = 42 subtract 6x from both sides
x = 10.5 divide both sides by 4

hope this helps!!

The equation -42 - 7 + 10x = -7 + 6x has one solution x = 10.5.

What is the equation?

The equation is defined as a mathematical statement that has a minimum of two terms containing variables or numbers that are equal.

The equation is given in the question, as follows:

-42 - 7 + 10x = -7 + 6x

Combine like terms in the equation,

-49 + 10x = -7 + 6x

Add 49 to both sides,

10x = 42 + 6x

Subtract 6x from both sides,

4x = 42

Divided both sides by 4 into the equation, and we get

x = 10.5

Thus, the equation has one solution x = 10.5.

Learn more about the equations here:

brainly.com/question/10413253

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