Mathematics High School

I need help finding the answer?

Answers

Answer 1

Answer:

-79

Step-by-step explanation:

5ac-2b

5(-3)(5) - 2(2)

-75-4

-79

substitute values and then solve

Related Questions

Y is such that 4y _ 7<= 3y and 3y <= 5y +8. What range of values of y satisfies both inequalities

Answers

Answer:

-4≤y≤7

Step-by-step explanation:

Given the inequality expressions

4y - 7 ≤ 3y and 3y≤5y+8

For 4y - 7 ≤ 3y

Collect like terms

4y - 3y ≤ 7

y ≤ 7

For 3y≤5y+8

Collect like terms

3y - 5y ≤ 8

-2y ≤ 8

y ≥ 8/-2

y ≥ -4

Combining both solutions

-4≤y≤7

Hence the range of values of y that satisfies both inequalities is -4≤y≤7

i need the answer -2x + 7

Answers

Answer:

Step-by-step explanation:

-2x + 7 =0

-2x = - 7

x = - 7/-2 = 7/2

Answer:

5x i think

Step-by-step explanation:

What is the solution to -2|2.2x - 3.3| = -6.6?
O x=-3
O x=3
O x=-3 or x = 0
O x = 0 or x = 3

Answers

Answer: x = 0 or x = 3

The solution to the equation, -2|2.2x - 3.3| = -6.6, which contain an absolute value, is: D. x = 0 or x = 3.

What is the Solution of an Equation with an Absolute Value?

To determine the solution, we have to isolate the value and find its value.

Given the equation, -2|2.2x - 3.3| = -6.6:

-2|2.2x - 3.3| = -6.6

2.2x + 3.3 = 3.3

2.2x = 3.3 - 3.3

2.2x = 0

x = 0/2.2

x = 0

2.2x - 3.3 = 3.3

2.2x = 3.3 + 3.3

2.2x = 6.6

x = 6.6/2.2

x = 3

The solution is: D. x = 0 or x = 3

Learn more about solution of absolute equation on:

https://brainly.com/question/15653132

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Jim drank 2 4/5 cups of orange juice and Jack drank 1 1/10 cups less than Jim. How much juice did jack drink? Explain your answer.

Answers

Answer:

Step-by-step explanation:

2 4/5 - 1 1/10

2 8/10 - 1 1/10

1 7/10 is how much juice Jack drank

Answer:

1 7/10

Step-by-step explanation:

First you should change 4/5 to 8/10 to have a common denominator. Then you just subtract and to get the answer.

pls help LOTS OF POINTS!!!! HELP!!!!!!

Answers

Answer:

Step-by-step explanation:

PLEASE HELP
1.How many pounds of walnuts that cost $0.80 per pound must be mixed
with 8 pounds of cashews that costs $1.25 per pound to make a mixture of
nuts that costs $1.00 per pound?

2.A chemist needs to mix a 12% acid solution with a 32% acid solution to
obtain an 8‐liters mixture consisting of 20% acid. How many liters of each of
the acid solutions must be used?

Answers

9514 1404 393

Answer:

1012%: 4.8 L; 32%: 3.2 L

Step-by-step explanation:

For mixture problems, I like to use a single variable to represent the quantity of the greatest contributor (greatest cost or greatest concentration). Let that variable be x.

1. In this problem, the amount of the greatest contributor is already fixed, so we'll use x for the amount of walnuts. The cost of the mix is ...

0.80x + 1.25(8) = 1.00(x +8)

2 = 0.2x . . . . . . . . . . . . . . . . . subtract 0.8x+8, simplify

10 = x . . . . . . . . . divide by 0.2

10 pounds of walnuts must be used.

2. The amount of acid in the mix is ...

12%(8 -x) +32%(x) = 20%(8)

20%(x) = 8%(8) . . . . . . . . . . . . subtract 12%(8)

x = 8(8)/20 = 3.2 . . . . . . . . . . divide by 20%

8-x = 4.8

3.2 liters of 32% acid must be mixed with 4.8 liters of 12% acid

_____

Comment on mixture problems

The general solution for mixture problems that have a greater contributor (G), a lesser contributor (L), and a mix value (M) is ...

g/l = (M -L)/(G -M) . . . . . . ratio of quantities of G and L

In the first problem, this becomes ...

8/l = (1.00 -.80)/(1.25 -1.00) = .2/.25 = 4/5 ⇒ l = 8(5/4) = 10

In the second problem, this becomes ...

g/l = (20-12)/(32-20) = 8/12 = 2/3 ⇒ g = (2/5)(8) = 3.2; l = (3/5)(8) = 4.8

In this case, we recognize that the ratio of 2 parts to 3 parts means that the greater contributor is 2 of 5 total parts.

The width of a rectangle measures (3n + 8p) centimeters, and its length measures
(3n - 4p) centimeters. Which expression represents the perimeter, in centimeters,
of the rectangle?

Answers

Answer:

12n - 8p = perimeter

Step-by-step explanation:

Perimeter is 2(length) + 2(width)

2(3n+8p) + 2(3n-4p)

Distribute:

6n + 16p + 6n - 8p

Simplify:

12n - 8p

Hope this helps :)

Look at the angle shown. Which measure is closest to the measure of the angle? A) 140° B) 90° C)40° D) 15°

Answers

Answer:

can you provide a picture?

Step-by-step explanation:

if it dorms an L it's C, is it's almost a straight horizontal line it's A

Jack is swimming along the surface of the ocean.Max is sitting on the deck of a ship above Jack.Alex is diving beneath Jack searching for sea life.Who could be at an elevation of -5m?

Answers

Answer:

Alex

Step-by-step explanation:

Representing the position of each person with respect to sea level :

Jack = surface of the ocean = 0 m

Max = Deck of a ship = elevation is above sea level = positive distance or elevation

Alex = Searching for sea life = below ocean surface = negative distance or elevation

Given an elevation of - 5m, then the person who could be at this elevation is Alex

Simplify:
4y - 1/2 (-3/4+2/3y)

Answers

4y + 3/4+ -2y/3 /2 should be it I think

Answer:

11/3y-3/8

Step-by-step explanation:

Distribute -1/2 through the parentheses

4y-3/8-1/3

calculate the difference

Answer- 11/3y-3/8

In order to determine students’ preferences, Ms. Lewis took a random survey of 60 high school students and found that 42 of them preferred multiple-choice tests to free-response typed tests. Use the results to predict the approximate number of students out of 180 who prefer multiple-choice tests?

Answers

Answer:

126 students

Step-by-step explanation:

42/60 = 126180

what is equivalent to 5/7

Answers

Answer:

10/14 25/35

Step-by-step explanation:

Answer:10/14

Step-by-step explanation:

What is an equation of the line that passes through the points (-2, 7) and (1, -8)?

Answers

Answer:

Im not a hundred percent sure

but

y=-5x+7

How to write two collum proofs

Answers

Answer:

When writing your own two-column proof, keep these things in mind:

Number each step.

Start with the given information.

Statements with the same reason can be combined into one step. ...

Draw a picture and mark it with the given information.

You must have a reason for EVERY statement.

Step-by-step explanation:

Find the value of y for the given value of t.
y = x + 5; 2 = 3

Answers

Answer:

Step-by-step explanation:

If u put it ona graph then u get 4

Find the area of this composite figure.

Answers

Answer: 171 cm

Step-by-step explanation: im not sure if this is right but

9x12=108

9x7=63

108+63=171

Area of triangle = ½bh
Area of rectangle = bh

Total area = Area of triangle + Area of rectangle

Area of rectangle = (12 cm)(9 cm)
Area of rectangle = 108 cm²

Area of triangle = ½(9 cm)(7 cm)
Area of triangle = ½(9 cm)(7 cm)
Area of triangle = 31.5 cm²

Total area = 31.5 cm² + 108 cm²
Total area = 139.5 cm²

Answer: 139.5 cm²

3x + 10 = -14
CAN SOMEONE HELP MEEE

Answers

Answer:

-8

Step-by-step explanation:

Answer:

x = -8

Step-by-step explanation:

3 x -8 = -24

-24 + 10 = -14

Simplify the expression: -6x^2(3x^5)

Answers

-18x^7 hausjdhehuedhbdbdndn

The dimensions of an actual swing set are shown. You want to create a scale model of the swing set for a dollhouse using similar triangles. Sketch a drawing of your swing set and label each side length. Then write a similarity statement for each pair of similar triangles and state the scale factor you used to create the scale model.

Answers

The dimensions of the scaled drawing are half the lengths of the dimensions of the original drawing

What are scaled drawings?

Scaled drawings are diagrams that shows the image of an object drawn in a reduced or enlarged proportional size.

How to determine a scale ratio

If the diagram is to be enlarged, then the scale ratio will be greater than 1.

However, smaller diagrams will have a scale ratio less than 1

In this case, we make use of a scale ratio of 0.5 or 1/2

This means that, the scaled drawing will have its lengths to be half of the original drawing

See attachment for the original drawing and the sketch of the scaled drawings

Answers

Answer:

3x+2z =8. 2x=4

Step-by-step explanation:

Answer: Symmetric property

Step-by-step explanation:

This is the Symmetric property.

The Symmetric property states: If x=y, then y=x. This fits the question, since 3x=2z, then 2z=3x.

Hope this helps!! :)

Please let me know if you have any questions

Solve for x and round to the nearest 10th. I'm a k12 student. I'm not sure if that helps but this is geometry. aka 10th grade math. i will mark brainliest

Answers

Answer:

x= 64.3

Step-by-step explanation:

To solve for x, you have to use trig. Since you're solving for an angle, you use inverse trig.

the problem gives you your opposite(29) and your adjacent(14), so you will use tangent.

so to set up your equation to type it into your calculator, it will be

[tex]tan^{-1} (\frac{29}{14} )[/tex]

type this into your calculator and you will get x.

Determine the average rate of change from x = 0 to x = 4

Answers

Answer:

I'm super bad at math sowy!!!

Step-by-step explanation:

\(T T)/

There are 8 teams playing in the tournament. Each team is scheduled to play every other team once. How many games will be played during the tournament?

A. 15

B. 21

C. 28

D. 36

Plz help me! who ansers this good I will giv 50 points!!!! I will vote you brainlest

Answers

The answer is 36 because all 8 teams play 4 games each.

Answer:

36 i did the quiz!

.
Write a rule for the linear function in the table.

x
f(x)
2
5
5
11
8
17
11
23

f(x) = 2x + 1

f(x) = [tex]\frac{1}{2}[/tex] + 1

f(x) = –2x – 1

f(x) = x + 5

Answers

Answer: brainly

someone said f(x) = x+5

Step-by-step explanation:

|The angles in a triangle are in the ratio 1:1:4
|(a) Find the size of the largest angle?
b) what type of triangle is it?

Answers

Since the internal angle sum of a triangle is 180 degrees, and the angles are in ratio if 1:1:4, the angles with that's corresponding to the 1 will have value of 180/6=30 degrees.

The largest angle will have value 30*4=120 degrees.

This is an obtuse triangle because largest angle>90 degrees.

Select all equations that are true. A. 2 2/3 × 4 = 8 2/3 B. 3 1/3 × 5/8 = 2 1/12 C. 6 2/3 × 2 1/2 = 16 2/3 D. 1 5/12 × 6 2/3 = 9 4/9 E. 4 1/2 × 3 4/5 = 12 2/5

Answers

Answer:

B, C, D hope this helps btw are you from connexus?

Step-by-step explanation:

Your boss is submitting a report to an organization that ensures employees in your industry are paid fairly. He asked you to calculate some summary statistics including the range and the mean. The salaries are as follows: $48,000, $41,000, $29,000, $48,000, $32,000. Provide the statistics for your boss.

Answers

Answer:

hana,dul,set,kaenada-in

What is the distance from point (6, -10) to point (6, 3)?

Answers

Answer:

Step-by-step explanation:

Nine friends share 8 bags of trail mix equally.what fraction of a bag of trail mix does each friend get?

Answers

Answer:

By doing 3 divided by 5, you will get 3/5 of trail mix per person.

Step-by-step explanation:

The fraction of a bag of trail mix each friend gets will be 8/9.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Nine friends share 8 bags of trail mix equally.

Then the fraction of a bag of trail mix each friend gets will be given by the division of the number 8 by 9. Then the fraction is given as,

⇒ 8 / 9

The fraction of a bag of trail mix each friend gets will be 8/9.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Please look at the picture below to answer.

Answers

Answer:

x=67

Step-by-step explanation:

subtract 90 because those are right angles from 23 and you get 67

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