What value of y will make this expression equal to 2.45?

Answers

Answer 1

What is the expression?


Answer 2

Any value of y, except when y = -4.9, will make the expression equal to 2.45.


Related Questions

Lily’s grandmother gave her 15 china dolls . If lily gives one third of them to her sister Nina how many dolls will Nina have?

Answers

To find 1/3 of 15 you divide 15 by 3 then times it by one so, 15 / 3 = 5 x 1 = (5)

Nina has five dolls
Final answer:

Nina receives one third of Lily's fifteen dolls, which is calculated as 15 multiplied by 1/3. Thus, Nina will have five dolls.

Explanation:

The question asks how many dolls Lily's sister, Nina, will have if Lily gives one third of her fifteen china dolls to Nina. Mathematically, one third of fifteen is calculated by multiplying fifteen by the fraction 1/3. Working this out gives you five. So, if Lily gives one third of her fifteen dolls to Nina, Nina will receive five dolls.

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What is the value of the expression?

−2^6 − (6)^2

Enter your answer in the box.

Answers

−2^6 − 6^2 =

-64 - 36 =

-100

Select a counter-example that makes the conclusion false.

7 - 3 = 4, 8 - 5 = 3, 9 - 8 = 1

Conclusion: the difference of two positive numbers is always positive.

Counterexample???

If you could explain it a little that would be FANTASTIC!

Answers

Counterexample: 4-5=-1

they are both positive but the sum is a negative

-Hope it helps!

Final answer:

A counterexample that makes the conclusion false is when the two positive numbers have a difference of zero.

Explanation:

A counterexample that makes the conclusion false is when the two positive numbers have a difference of zero. For example, if we take the numbers 5 and 5, their difference is 0, which is not positive. So this counterexample shows that the conclusion 'the difference of two positive numbers is always positive' is false. The counterexample to the conclusion that "the difference of two positive numbers is always positive" is:

1 - 3 = -2

In this case, you have two positive numbers (1 and 3), but their difference (-2) is negative, not positive. This counterexample demonstrates that the statement is not always true, as there are situations where the difference of two positive numbers can be negative.

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HELP 20 POINTS AND WILL GIVE BRAINIST!!

Answers

Simplified form: -3/2
Mixed number: -1 1/2
Those are the answers
Just simplify the equation
Make them as an exact form
Then divide.

demarcus has at least $8 more than his older sister. His older sister had $4. Which of the following inequalities could be used to find how much money m demarcus has?

Answers

the correct inequality is: m ≥ 8 + 4

The given information states that Demarcus has at least $8 more than his older sister, who has $4.

To find how much money Demarcus has, we denote m as the amount of money Demarcus has.

Since Demarcus has at least $8 more than his older sister, we can express this relationship as:

m ≥ 8 + 4

This inequality states that Demarcus's money m is greater than or equal to the sum of $8 (more than his sister) and $4 (his sister's money).

So, the correct inequality is: m ≥ 8 + 4

Therefore, the option is: m ≥ 8 + 4

The probable question maybe:

Demarcus has at least $8 more than his older sister. His older sister has $4.

Which of the following inequalities could be used to find how much money, m. Demarcus has?

Om> 8+4

8 - m < 4

8m > 4

what is the square root of 2.4²+.7²

Answers

[tex]\sqrt{2.4^2+0.7^2}=\sqrt{5.76+0.49}=\sqrt{6.25}=2.5\\\\because\ 2.5^2=6.25[/tex]

20 PTS!!!!!!!! HELPPP

Answers

Answer:

1. Not congruent

2. Not congruent

3. Congruent

4. Congruent

5. Not congruent

6. Not congruent

???


Step-by-step explanation:


Answer:

its not even 20 pts

Step-by-step explanation:

Elyse needs 3 gallons of water to mix a fruit drink, but she has a 1-cup measuring cup. She knows that there are 4 cups in 1 quart, and 4 quarts in 1 gallon. Fill in the blanks to explain how Elyse can find the number of cups of water she needs to mix the fruit drink.

Answers

she needs 48 cups to mix her fruit drink thing

Answer:

1st blank: Multiply

2nd blank: 4 quarts per cup

3rd blank: 16 cups

4th blank: Multiply

5th blank: 16 cups per gallon  

6th blank: 48 cups.

Step-by-step explanation:

We have been given that Elyse needs 3 gallons of water to mix a fruit drink, but she has a 1-cup measuring cup. She knows that there are 4 cups in 1 quart, and 4 quarts in 1 gallon.

Elyse can use the unit rate. First she can multiply 4 cups in a quart by 4 quarts per gallon to find that there are 16 cups in 1 gallon. She can then multiply 3 gallons by 16 cups per gallon to determine that she will need 48 cups of water to mix the fruit drink.

[tex]\frac{\text{4 cups}}{\text{Quart}}\times\frac{\text{4 quarts}}{\text{gallon}}=\frac{\text{16 cups}}{\text{gallon}}[/tex]

Step 2:

[tex]3\text{ gallons}\times\frac{\text{16 cups}}{\text{gallon}}=3\times \text{16 cups}=\text{48 cups}[/tex]

On a piece of paper, graph y> -2x -2 . Then determine which answer choice matches the graph you drew.

Answers

Answer:

C) Graph B

Step-by-step explanation:

All of these equations have the line y = -2x - 2 graphed.

In the inequality, we have the symbol greater than or equal to.  This tells us the line drawn must be solid, not dashed.  This means the correct graph is either B or D.

Since it is greater than or equal to, the shaded area must be above the line.  This is graph B.

We need to therefore plot the graph passing through the coordinate point (0, -2) and (-1, 0). Option B is correct

Graph of inequality functions

Inequality are expression not separated y an equal sign. For an inequality, the upper graph is shaded for greater than and the lower part shaded for less than sign.

Since the sign is greater than and equal to, hence the line will be a solid line as shown in the graph.

Given the inequality y≥ -2x -2. Find the intercepts

If x = 0

y = -2(0) - 2

y = -2

The y-intercept is at (0,-2

If y = 0

0 = -2x - 2

2x = -2

x = -1

The x-intercept is at (-1,0)

We need to therefore plot the graph passing through the coordinate point (0, -2) and (-1, 0) as shown

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15 is the same as the product of 3 and a number. Which equation models this sentence?
15=3x
15=x-3
15=3+x
15=x divided by 3

Answers

Question

15 is the same as the product of 3 and a number. Which equation models this sentence?

15=3x

15=x-3

15=3+x

15=x divided by 3

Answer:

15=3x

Step-by-step explanation:

15 = 3x

x = 15 : 3

x = 5

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

check

15 = 3 * 5

15 = 15

the answer is good


Answer:

15=3x

Hope this helps!

Tuesday morning the temperature was -4°F. The temperature rose 5°F by lunchtime and dropped 30°F by midnight. What is the temperature in Seattle at midnight?

Answers

Okay, to start off using a number line is always useful. Negative 4 plus 5 equals 1, if it dropped by 30 which is subtracting 30 from 1 it takes 1 out of the positive zone to the negative. Which equals to negative 29.

A wall is 26 inches wide. Twelve inches is​ concrete, 9 inches is​ brick, and 5 inches is limestone. What fraction of the wall is​ concrete?

Answers

Final answer:

The fraction of the wall that is concrete is obtained by dividing the width of concrete (12 inches) by the total wall width (26 inches). This gives a fraction of 12/26, which simplifies to 6/13. Therefore, 6/13 of the wall is made of concrete.

Explanation:

To solve this problem, we can express the width of the concrete part of the wall as a fraction of the total wall width. First, we will identify the total width of the wall, which includes the different sections of concrete, brick, and limestone. In this case, that is 26 inches (12 inches of concrete + 9 inches of brick + 5 inches of limestone = 26 inches).

Next, we need to determine the width of the concrete section, which is 12 inches.

To express the width of the concrete wall as a fraction of the total wall width, we divide the width of the concrete part by the total wall width. So, we have: 12 inches / 26 inches. Therefore, the fraction of the wall that is concrete is 12/26, which simplifies to 6/13. Out of every 13 parts of the wall, 6 parts are made up of concrete.

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Why can you use cross products to solve the proportion 18/5 = x/100 for x?
A.because 18 times 100 is equal to 5 times x, which means that x is equal to 36 B.because 18 times 100 is equal to 5 times x, which means that x is equal to 360 C.because 18 times x is equal to 5 times 100, which means that x is equal to 36 D.because 18 times x is equal to 5 times 100, which means that x is equal to 360

Answers

im not 100% sure but im pretty sure it is B

Selma has 77 strawberries. Divide them into two groups so that for every 4 strawberries in group 1 there are 7 strawberries in group 2 how did you break it down

Answers

4x+7x=77
11x=77
77/11
x=7

what's 3 and 1 in a half

Answers

the answer to the question is 4 1/2

The length of a rectanglewith area 54 square centimeters is 9 centimeters. What is the perimeter of the rectangle, in centimeters?

Answers

So, first we have to find the width.


Area of a rectangle = length * width


54 = 9 * width

width = 6cm


Now we can plug this into the perimeter formula.

2w + 2l = P

P = 2(6) + 2(9)

P = 12 + 18

P = 40

Use the Pythagorean theorem to find the distance from Emma’s house to the tree house

Answers

The horizontal distance from Emma's house to tree house is 7 units and the vertical distance is 3 units.

Draw the horizontal and vertical lines to form a right triangle.

Label the vertices as A, B and C.

By Pythagorean theorem, [tex]AC^{2} =AB^{2}+ BC^{2}[/tex]

= [tex]3^{2} +7^{2}[/tex]

= 9 + 49

= 58

So, [tex]AC = \sqrt{58}[/tex]

Hence, distance from Emma's house to tree house is [tex]\sqrt{58}[/tex] units.

Given the equation: y=mx+b

m=slope

true

false

Answers

Your answer is true.

[tex]y=mx+b[/tex]

The equation is used to find the equation of a line in slope-intercept form.

m is used to represent the slope.

x is used to represent the x-axis.

y is used to represent the y-axis.

b is used to represent the y-intercept.

If you have any questions, feel free to ask! :)

what is the relationship of the volume of the cube to its edge length?

Answers

V = s*s*s where s is the side length

V = s^3

rosie is going on a 312-mile road trip. if she wants to make the drive in 6 hours, at what constant rate will she need to drive in terms of miles per hour?

Answers

312miles/6hours=52mph

52mph

Final answer:

To make the 312-mile road trip in 6 hours, Rosie would need to drive at a constant rate of 52 miles per hour.

Explanation:

To find the constant rate at which Rosie needs to drive, we can divide the total distance by the total time. In this case, Rosie needs to drive 312 miles in 6 hours. So the rate would be 312 miles ÷ 6 hours = 52 miles per hour.

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The sum of two numbers is 32. One of the numbers is 4 less than 5 times the other. What are the numbers?

Answers

Let the first number be = x

Then other number according to question is

4 less than 5 times the number i.e. 5x-4

Also ,sum of numbers is 32

x+5x-4=32

6x-4=32

Add 4 to both sides

6x-4+4=32+4

6x=36

Divide both sides by 6

x=36/6

x=6

First number =x =6

Other number =5(6)-4 = 30-4 =26

Answer: 26 and 6

Step-by-step explanation: Let's use two variables to represent our two numbers in this problem. Since a variable is a letter that represents any number, we can pick any letters we want to but I will use with x and y.

So if the sum of two numbers is 32, that means x + y = 32.

To solve for two separate variables, we will need two separate equations. So for the second equation, let's read through the second sentence in the problem.

"One of the numbers" that's x, "is" means equals, "4 less than 5 times the other" is not 4 - 3y, it means 5y - 4. The word "less than" switches the order around. So we now have x = 5y - 4.

So to solve this system of equations, let's use substitution. Since x = 5y - 4, we can substitute a 5y - 4 in for x in the first equation to get (5y - 4) + y = 32. Solving from here we get 6y - 4 = 32 by combining like terms. Now we can get rid of that -4 by adding 4 to both sides of the equation to get 6y = 36. Now, we will divide both sides of the equation by 6 in order to isolate y and we end up with y = 6.

To find x, plug 6 back in for y in the second equation to get x = 5 (6) -4 which we can simplify to x = 30 - 4 which simplifies to x = 26.

Therefore, our two numbers in this problem are 26 and 6.

What is the value of the expression 7^−3

A. 1/343
B.−21
C.343
D.1/343

Answers

Answer: A. [tex]\frac{1}{343}[/tex]


Step-by-step explanation:

First, apply exponent rule.

[tex]=\frac{1}{7^3}[/tex]

[tex]7^3=7*7*7=343[/tex]

[tex]=\frac{1}{343}[/tex]

Hope this helps!

Thank you for posting your question.

-Charlie

What is the sum 4x+1/x+2 + x-1/3x

Answers

Answer:

[tex]\dfrac{4x+1}{x+2}+\dfrac{x-1}{3x}=\dfrac{13x^2+4x-2}{3x^2+6x}[/tex]

Step-by-step explanation:

[tex]Domain:\\x+2\neq0\ \wedge\ 3x\neq0\\\\x\neq-2\ \wedge\ x\neq0[/tex]

[tex]\dfrac{4x+1}{x+2}+\dfrac{x-1}{3x}=\dfrac{(4x+1)(3x)}{(x+2)(3x)}+\dfrac{(x-1)(x+2)}{(3x)(x+2)}\\\\=\dfrac{(4x)(3x)+(1)(3x)+(x)(x)+(x)(2)+(-1)(x)+(-1)(2)}{(3x)(x+2)}\\\\=\dfrac{12x^2+3x+x^2+2x-x-2}{(3x)(x)+(3x)(2)}\\\\=\dfrac{13x^2+4x-2}{3x^2+6x}[/tex]

Is Trazillion a number

Answers

No it is not a real number

Yes, it is a number. It equals 1,000,000,000,000.

the masses of four cars loaded on a car transporter are 2.1 tonnes 3.7 tonnes 2.8 tonnes and 1700kg what is the total mass in tonnes

Answers

First you turn the the kg to tonnes so it’ll be 1.7 tonnes, then you simply add them as follow:

2.1 + 3.7 + 2.8 + 1.7

So the answer will be 10.3 tonnes
Final answer:

To find the total mass of the four cars, first convert the mass given in kilograms to tonnes, and then sum all the masses. The total mass of the cars on the car transporter is 10.3 tonnes.

Explanation:

The total mass of the four cars loaded on a car transporter can be calculated by first ensuring all the masses are in the same unit. The masses are given as 2.1 tonnes, 3.7 tonnes, 2.8 tonnes, and 1700 kg. We must convert the mass given in kilograms to tonnes before we add them together, as there are 1000 kg in a tonne.

To convert 1700 kg to tonnes:

1700 kg ÷ 1000 = 1.7 tonnes

Now that all masses are in tonnes, we sum them up:

2.1 tonnes3.7 tonnes2.8 tonnes1.7 tonnes

Total mass in tonnes = 2.1 + 3.7 + 2.8 + 1.7 = 10.3 tonnes.

Therefore, the total mass of the four cars on the car transporter is 10.3 tonnes.

Lucy has 4 inches of ribbon that she wants to cut into 6 equal sized pieces. What is true about the length of each piece of ribbon. A) each piece has 6/4 inches of ribbon B) each piece has 1/4 of 6 inches of ribbon C) each piece has 1/6 of 4 inches of ribbon

Answers

Answer:

Option C

Step-by-step explanation:

Given

Total length of ribbon lucy has=4 inches

She wants to divide it into 6 equal sized pieces so  

Length of each piece=4/6

This can also be written as:

Length of each piece=4*(1/6 )

Now we will look at the options one by one:

For A, Each piece has 6/4 inches of ribbon.. This statement is not true as we have to divide 4 inches into 6 pieces so 4 is supposed to be in the numerator.

For B, breaking down 4/6 gives us 4*(1/6), so the statement is not true.

For C , as we can see that the expression is 4*(1/6), each piece will have 1/6 of inches of ribbon.

So option C is the correct answer..

Answer:

c

Step-by-step explanation:

Which values are possible rational roots of 9x^3 + 14x^2 - X + 18=0 according to the rational root theorem?

Select each correct answer

Answers

ANSWER
The correct answers is B and D.

EXPLANATION

According to the rational root theorem, all factors of 18 divided by all factors of 9 are possible rational roots.

[tex] \pm \frac{3}{9} = \pm \frac{1}{3} [/tex]

[tex] \pm \frac{3}{1} = \pm 3[/tex]

Therefore option B and D are the correct answers.

The possible rational roots of the polynomial 9x³ + 14x² - x + 18 = 0, according to the Rational Root Theorem, are ±1, ±2, ±3, ±6, ±1/3, ±2/3, ±1/9, and ±2/9.

To find the possible rational roots of the polynomial 9x³ + 14x² - x + 18 = 0 according to the Rational Root Theorem, we look at the factors of the constant term (the last term, 18) and the leading coefficient (the coefficient of the term with the highest power of x, which is 9).

The factors of 18 (±1, ±2, ±3, ±6, ±9, ±18) are divided by the factors of 9 (±1, ±3, ±9), which gives a list of possible rational roots:

±1

±2/3

±3

±1/3

±2

±6

±1/9

±2/9

±6/9

±18/9

However, not all these values are in simplified form. After simplification, we get a list of unique possible rational roots for the given polynomial equation:

±1

±2

±2/3

±1/3

±3

±6

±1/9

±2/9

find dy/dx for y=log (tan2x)

Answers

Final answer:

To find dy/dx for y=log(tan(2x)), we can use the chain rule: dy/dx = (2sec²(2x))/tan(2x).

Explanation:

To find dy/dx for y = log(tan(2x)), we can use the chain rule. Let's break it down step by step:

First, we identify the inner function, which is u = tan(2x).

Next, we find the derivative of the inner function with respect to x: du/dx = 2sec²(2x).

Then, we identify the outer function, which is y = log(u).

Finally, we find the derivative of the outer function with respect to u and multiply it by the derivative of the inner function with respect to x: dy/dx = (1/u) * (du/dx) = (2sec²(2x))/tan(2x).

somebody help me please? im timed!

Answers

We know that

Domain:

It is all possible values of x for which any function is defined

we are given function

[tex]f(x)=-(x+3)(x-1)[/tex]

we can see that our function goes from left to right side

so, domain will be all real numbers

Range:

Range is all possible values of y

we can see that

largest y-value is 4

smallest y-value is -inf ...because it keeps going downward

so, range is

[tex](-\infty , 4][/tex]

so, option-C...........Answer

What is 1 2/3 times 2 5/8

Answers

4 3/8 because 1 2/3 and 2 5/8 multiplied together is that.

change each to an improper fraction

1 2/3 = (3*1+2)/3 = 5/3

2 5/8 = (8*2+5)/8 = 21/8

5/3 * 21/8  = 105/24

divide by 3

35/8

4*8 = 32  35-32 = 3

4 3/8

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