I've never really understood these, can someone just help?
The expression 3(x^2-1)-(x^2-7x+10) is equivalent to
Write an example of the distributive property.
The area of a parallelogram is 45 square miles. Find the base and height.
Susan has raised $234 by selling 18 equally priced wreaths for the band fund-raiser. Which of the following equations can be used to find the price, y, of each wreath?
18x = $234 equation help Susan to find the price of each wreath, which is equals to $13.
What is linear equation in one variable?" Linear equation in one variable is mathematical expression of writing an equation in which highest degree of the variable is one."
According to the question,
Amount raised by Susan = $234
Number of wreaths =18
'x' represents the price of each wreath .
As per the condition given , linear equation we get,
18x = $234
⇒x = 234 / 18
= $13
Hence, 18x = $234 equation help Susan to find the price of each wreath, which is equals to $13.
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Charlie graphs the equation y= –1/2x+2 . Select all statements about Charlie's graph that are true. The graph is a straight line. The line does not pass through the origin. The line passes through the point (0, –2) . The slope of the line is 12 . The y-intercept of the line is 2.
Answer:
Step-by-step explanation:
The graph is a straight line.
The line does not pass through the origin.
The y-intercept of the line is 2.
Write the equation in proper standard form, 9x-2/3y=-4
there were 18 cans ona shelf. a customer bought 7 cans. then jake put 6 cans on the shelf. how many cans are on the shelf now?
Which expression has an estimated product of 60
Specific mathematical expressions are needed to determine which has an estimated product of 60, for instance, combinations like 10 times 6 or 15 times 4.
The question relates to estimating the product of numerical expressions to determine which one is closest to 60. However, the provided information contains unrelated data and does not present clear mathematical expressions that we can evaluate to find an estimated product of 60. Thus, to accurately answer this question, we would need specific expressions to consider. In general, an expression likely to have an estimated product of 60 would be the multiplication of two numbers whose product is close to 60. For instance, numbers like 10 and 6 or 15 and 4 could be suitable factors in such expressions.
A carton of juice contains 64 ounces. Ms.Wilson bought 6 cartons of juice how many ounces of juice did she buy
what is 528 1/5 - 89 3/5
Or is it c. 10.96 or d 13.0 (sorry the rest couldn’t fit in the picture) please help me I don’t get it.
At a supermarket pineapple juice sells at $1 per pint (16 ounces). Greg wants to buy 18 40-ounce cans of pineapple juice from the supermarket. How much does he have to pay altogether?
Greg would need to pay a total of $45 for 18 40-ounce cans of pineapple juice, after converting the total ounces to pints at the given price of $1 per pint.
To determine how much Greg needs to pay for 18 40-ounce cans of pineapple juice, we first need to calculate the total number of ounces Greg is purchasing and then convert that to pints since the price is given per pint. One pint equals 16 ounces, so we can use this to find the cost.
Step-by-Step Calculation:
Calculate the total ounces of pineapple juice.
18 cans imes 40 ounces per can = 720 ounces total.
Convert ounces to pints since the price is per pint.
720 ounces ÷ 16 ounces per pint = 45 pints.
Calculate the total cost.
45 pints imes $1 per pint = $45 total.
Therefore, Greg has to pay a total of $45 for 18 40-ounce cans of pineapple juice.
20 Points Please help.
Write the system of inequalities shown in the graph
simplify the expression (0.4)^{3}.
What weight of dry substance is in 150g of a 3% substance solution? What weight of an 8% solution can we have with the same weight of dry substance?
Answer:
4.5 and 56.25
Step-by-step explanation:
Please help me to answer these questions!!
1- There are 40 ping-pong balls in a box. 16 of them are dented. Find the ratio of the number is dented ping-pong balls to the total number of ping-pong balls in the box if another 12 dented ping-pong balls are added into the box??
=
2- The total height of three friends, Sasha, Tess and Wendy, is 470 cm. The ratio of the height of Sasha to the height of Tess is 3 : 4. Wendy is 30 cm taller than Tess. Find the ratio of Tess’ height to Wendy’s height??
=
3- Josh, Ben and Rick have 70 marbles altogether. The ratio of the number is marbles Josh has to the number of marbles Rick has is 1 : 2. However, Ben has 15 marbles fewer than Rick. How many marbles does Ben have?
=
Final answer:
The ratio of dented ping-pong balls to the total number of ping-pong balls is 28/52. The ratio of Tess' height to Wendy's height is 8/9. Ben has 19 marbles.
Explanation:
Question 1:
To find the ratio of dented ping-pong balls to the total number of ping-pong balls, you need to add the number of dented balls before and after adding 12 more dented balls.
Given that there are initially 16 dented balls in a total of 40 balls, the ratio is 16/40.
After adding 12 more dented balls, the total number of dented balls becomes 16 + 12 = 28.
The total number of ping-pong balls is 40 + 12 = 52.
Therefore, the ratio of dented balls to the total number of balls is 28/52.
Question 2:
Let's assign variables for the heights of Sasha, Tess, and Wendy.
Let the height of Sasha be 3x.
Since the ratio of Sasha's height to Tess's height is 3:4, the height of Tess can be represented as 4x.
Wendy is 30cm taller than Tess, so Wendy's height is (4x + 30).
The total height of the three friends is 470cm, so we can write the equation 3x + 4x + (4x + 30) = 470.
Simplifying the equation gives us 11x + 30 = 470, and solving for x gives us x = 40.
Therefore, the ratio of Tess's height to Wendy's height is 4x/(4x + 30) = 4*40/(4*40 + 30) = 160/190 = 8/9.
Question 3:
Let's assign variables for the number of marbles Josh, Ben, and Rick have.
Let the number of marbles Josh has be x.
Since the ratio of Josh's marbles to Rick's marbles is 1:2, the number of marbles Rick has is 2x.
Ben has 15 fewer marbles than Rick, so Ben has (2x - 15) marbles.
These three quantities sum up to 70, so we can write the equation x + 2x + (2x - 15) = 70.
Simplifying the equation gives us 5x - 15 = 70, and solving for x gives us x = 17.
Therefore, Ben has 2x - 15 = 2*17 - 15 = 19 marbles.
A Realtor earns a 3.25% commission on the sale of each house. How much did a house sell for if Realtor earned 10,566.40
Answer:
He sold the house for $325,120.
Step-by-step explanation:
A realtor earns a 3.25% commission on the sale of each house.
He earned his commission on a house sell = $10,566.40
Let the price on which he sold a house be 'p'
Therefore, 3.25% × p = $10,566.40
0.0325 × p = 10566.40
p = [tex]\frac{10,566.40}{0.0325}[/tex]
p = $325,120
He sold the house for $325,120.
Which equation represents a proportional relationship? y= 1 /2x or y=2(x+ 1 3 ) or y = 3x or y=−3x+2
Each day Ernesto drives 52 miles. If he can drive 26 miles on one gallon of Gasoline, how many days can he drive on 14 gallons of gasoline?
Factor the expression. 49b^2+70b+25
He first term of a sequence is 2, and each subsequent term is the reciprocal of the square of the preceding term. what is the positive square root of the fifth term?
Bryan reads for x minuets. Kelly Reads for 1/4 the amount of time Brian reads.
Which statement explains 1/4x and 0.25x can each find the number of minuets jelly reads?
A. The fraction 1/4 is equivalent to the decimal 0.75 .there for 1/4 X can be written as 0.75X.
B. Multiplying by 1/4 is the same as multiplying by 25%.
C. The expressions are not equivalent.
D. Multiplying by four is the same as multiplying by 25%
How much pure water must be mixed with 10 liters of a 25% acid solution to reduce it to a 10% acid solution?
How much pure water must be mixed with 10 liters of a 25% acid solution to reduce it to a 10% acid solution?
15L
The cost of 8 adults tickets to a movie is $66. What is the cost of one adult ticket?
THE FIRST ONE THAT ANSWERS AND EXPLAINS WHY HE GOT THAT WILL NE MARKED AS BRAINIEST
A square has an area of 4x^{2} + 12xy + 9y^{2} square meters. What is the perimeter of the square?
Answer:
Perimeter = 4L = 4(2x+3y) = 8x+12y
Step-by-step explanation:
Given:
square with area A(x,y) = 4x^2+12xy+9y^2
Find perimeter.
A(x,y) = (2x+3y)^2
Length of each side
L = sqrt( A(x,y) ) = sqrt((2x+3y)^2) = 2x+3y
Perimeter = 4L = 4(2x+3y) = 8x+12y
when chef alice makes rice pailaf for 30 people she uses 15 cups of chicken broth and 10 cups of rice dan wants to make the same recipe for 9 people write and use equations to find how much broth and how much rice dan should use
15 cups of chicken broth + 10 cups of rice = 30 people
4.5 cups of chicken broth + 3 cups of rice = 9 people
The number of cups of chicken broth required for 9 people is 4.5.
The number of cups of rice required for 9 people is 3
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
We have,
Alice makes rice pailaf for 30 people she uses 15 cups of chicken broth and 10 cups of rice.
This can be written as,
15 cups of chicken broth + 10 cups of rice = 30 people _____(1)
Now,
Multiply 9/30 on both sides.
9/30 x 15 cups of chicken broth + 10 cups of rice) = 9/30 x 30 people
9/30 x 15 cups of chicken broth + 9/30 x 10 cups of rice = 9 people
4.5 cups of chicken broth + 3 cups of rice = 9 people
Thus,
The number of cups of chicken broth required for 9 people is 4.5.
The number of cups of rice required for 9 people is 3
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770 Times 6 equals 77 Times 6 Times 100
Type the correct answer in the box below.
Use numerals instead of words. If necessary, use / for the fraction bar(s). A line passes through point (-2, 5) and has a slope of . Points A(x, 3) and B(-2, y) lie on the line. The value of x is , and the value of y is . (already solved))
2. -1/2 + (1 1/4)
Type the correct answer in the box below.
Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 2 more than 3 times the number of marbles Mark has, how many does each boy have to sell if the total number of marbles is 78 ?
Don has 59 and Mark has 19
What is the equation?
An equation is a mathematical expression that contains an equal symbol. Equations often contain algebra. Algebra is used in math when you do not know the exact number in a calculation.
Types of Equations
Linear EquationsQuadratic EquationsCubic EquationsMark + Don = 78 marbles
Let, M = Mark and D = Don
M = 78-D We'll use this value for M next:
D = 3M+2
D = 3(78-D)+2
D = 234-3D+2
4D = 236
D = 59
Don has 59 and Mark has 78-59 = 19
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