Which shows equivalent expressions?

Which Shows Equivalent Expressions?

Answers

Answer 1
The right answer is D

Related Questions

By Factoring And Using Quadratic Formula x raise to two minus 10x is equals to negative 21

Answers

Answer:

[tex]x =3[/tex] or [tex]x = 7[/tex]

Step-by-step explanation:

Given

[tex]x^2 - 10x = -21[/tex]

Required

Solve by factoring & quadratic formula

By Factoring:

[tex]x^2 - 10x = -21[/tex]

Equate to 0

[tex]x^2 - 10x +21 = 0[/tex]

Expand:

[tex]x^2 - 7x -3x+21 = 0[/tex]

Factorize:

[tex]x(x-7)-3(x-7) = 0[/tex]

[tex](x-3)(x-7) = 0[/tex]

[tex]x -3 = 0[/tex] or [tex]x - 7 = 0[/tex]

[tex]x =3[/tex] or [tex]x = 7[/tex]

By quadratic

[tex]x^2 - 10x = -21[/tex]

Equate to 0

[tex]x^2 - 10x +21 = 0[/tex]

For

[tex]ax^2 + bx + c = 0[/tex]

x is solved using:

[tex]x = \frac{-b\±\sqrt{b^2-4ac}}{2a}[/tex]

where

[tex]a = 1[/tex]; [tex]b = -10[/tex]; [tex]c = 21[/tex]

So:

[tex]x = \frac{-(-10)\±\sqrt{(-10)^2-4*1*21}}{2*1}[/tex]

[tex]x = \frac{10\±\sqrt{100-84}}{2}[/tex]

[tex]x = \frac{10\±\sqrt{16}}{2}[/tex]

[tex]x = \frac{10\±4}{2}[/tex]

Split

[tex]x = \frac{10+4}{2}[/tex] or [tex]x = \frac{10-4}{2}[/tex]

[tex]x = \frac{14}{2}[/tex] or [tex]x = \frac{6}{2}[/tex]

[tex]x = 7[/tex] or [tex]x =3[/tex]

After taking the interest formula (I=Prt) and solving the equation for t, how many years will it take to earn $80 in interest (I) if I initially invest $500 (P) and my interest rate (r) is 4%? (Don't forget to change your percentage to a decimal!)
t=

Answers

Answer:

hehehe

Step-by-step explanation:

hehehe

Solve the following equation
5x + 2 = 4x - 1

Answers

Answer:

x=-3

Step-by-step explanation:

Solve for x:

5x+2=4x−1

Move all terms containing x to the left side of the equation.

x+2=−1

Move all terms not containing x to the right side of the equation.

x=−3

Which graph shows the solution set of the compound inequality 1.5 x minus 1 greater-than 6.5 or 7 x + 3 less-than negative 25?

A number line goes from negative 10 to positive 10. An open circle appears at negative 4 and positive 5. The number line is shaded between the two circles.

A number line goes from negative 10 to positive 10. An open circle appears at negative 4 and positive 5. The number line is shaded from negative 4 toward negative 10. The number line is also shaded from positive 5 toward positive 10.

A number line goes from negative 10 to positive 10. An open circle appears at negative 4. The number line is shaded from negative 4 toward negative 10.

A number line goes from negative 10 to positive 10. An open circle appears at positive 5. The number line is shaded from positive 5 toward positive 10.

Answers

Answer:

After solving the compound inequality [tex]1.5x-1>6.5 \ or \ 7x+3<-25[/tex] we get [tex]\mathbf{x>5 \ or \ x<-4}[/tex]

Option B is correct.

Step-by-step explanation:

We are given compound inequality: [tex]1.5x-1>6.5 \ or \ 7x+3<-25[/tex]

We will first solve the inequalities to find the value of x, then will draw the graph.

[tex]1.5x-1>6.5 \ or \ 7x+3<-25\\1.5x-1+1>6.5+1 \ or \ 7x+3-3<-25-3\\1.5x>7.5 \ or \ 7x<-28\\x>\frac{7.5}{1.5} \ or \ x<\frac{-28}{7}\\x>5 \ or \ x< -4[/tex]

So, after solving the compound inequality [tex]1.5x-1>6.5 \ or \ 7x+3<-25[/tex] we get [tex]\mathbf{x>5 \ or \ x<-4}[/tex]

Now, the number line will be as shown in figure.

The description as given in options is:

A number line goes from negative 10 to positive 10. An open circle appears at negative 4 and positive 5. The number line is shaded from negative 4 toward negative 10. The number line is also shaded from positive 5 toward positive 10.

so, Option B is correct.

Answer:

the answer is b

Step-by-step explanation:

2020 edge

5/7 = a/35 what is the answer ?

Answers

The answer is A=25
.........
.............

Answer:

hello! I am pretty sure the missing number is 25!

Step-by-step explanation:

Here is why I think so, I believe that because it seems to me that you are multiplying 7 by 5 so I think that you should multiply 5 by 5 and if you do that it is 25. Hope this helps!

1. 7.35 x 10 6 – 9.42 x 10 8
2. 3.14 x 10 -3+1.59 x 10 -1
3. (2 .8x 10 -9 )(4.75 x 10 -3 )
plz hurry

Answers

I so the first one the solution is -238.6 hope it helps

WUTS THE ANSWER IM SO LOST I NEED HELP!!! :(

Answers

1/6 = 0.16 acres in 8 minutes.

--

0.16  ÷ 8 = 0.02 acres mowed in 1 minute.

--

(60 minutes in an hour)

0.02 x 60 = 1.2 acres mowed in an hour.

--

1.2 is equal to 1 1/5, and jami needs to mow 1 1/2 acres. so no, jami cannot mow 1 1/2 acres in an hour.

if you want brainiest than come here

go to remind.com then log in as student then put the class code: c26kda4

Answers

What will happen once we enter that class code?

what is Negative 5 and StartFraction 5 over 8 EndFraction + 3 and one-half

Negative 3 and StartFraction 1 over 8 EndFraction

Negative 2 and one-half

Negative 2 and StartFraction 1 over 8 EndFraction

Negative StartFraction 7 over 8 EndFraction

Answers

Answer:

its c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

i got it right

-1
A line's y-intercept is 0, and its slope is
20
What is its equation in slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Submit

Answers

Answer:

y=20x

Step-by-step explanation:

do do I intercept a zero, so you don't have a "b"

The slope is 20. that's pretty self-explanatory

Answer the question please:
The correct answer will be marked as brainliest =)
thanks xoxo

Answers

Answer:

The answer is 5^-4.

Hope this helps and if you could mark this as brainliest. Thanks!

Answer:

[tex]\frac{1}{5^{4}}[/tex]

Step-by-step explanation:

[tex]\frac{a^{m}}{a^{n}}=\frac{1}{a^{n-m}},[/tex]   if n >m

[tex]\frac{5^{3}}{5^{7}} = \frac{1}{5^{7-3}}=\frac{1}{5^{4}}[/tex]

A section of a railway has a slope of approximately 0.47. In this section, a vertical change of 1 unit corresponds to a horizontal change of what length? Round your answer to the nearest hundredth.

Answers

Step-by-step explanation:

A slope of 0.47 means that, for every 100 feet of horizontal change, the vertical rise = 47 feet

We can use a proportion here

0.47 / 1 = 1 / x

Cross-multiply

0.47x = 1*1

0.47x = 1

Divide both sides by 0.47

x = about 2.13 units

divide 25/1658 To find the quotient, start by dividing _
into _.

Answers

Answer:

To find the quotient, you must start by dividing 25 into 1,658.

Step-by-step explanation:

2(t+1)=10 what does t equal

Answers

Answer:

t = 4

Step-by-step explanation:

1. 2*t = 2t

2. 2*1 = 2

3. 2t+2 = 10

4. 10-2 = 8

5. 2t = 8

6. 8/2 = 4

7. t = 4

Answer:

t = 4

Step-by-step explanation:

2(t + 1) = 10

2t + 2 = 10

2t = 10 - 2

2t = 8

t = 8 ÷ 2

t = 4

-TheUnknownScientist

Solve the following system of equations:
Y=x^2+4x+4
Y=x+2
What is the value of y?

Answers

Answer:

y=4, y=2

Step-by-step explanation:

PLS HELP ME ASAPP!!! :((
Which situation represents a proportional relationship?

A. The cost of purchasing grapefruit for $ 1.80 per pound with a coupon for $ 1.00 off the total cost

B. The cost of purchasing a basket of oranges for $1.30 per pound plus $5.00 for the basket

C. The cost of purchasing apples for $1.75 per pound plus a shipping fee of $0.16 per pound

D. The cost of purchasing peaches for $7.00 per box of peaches with a delivery charge of $3.00

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Ratio and Proportion.

C.) The cost of purchasing apples for $1.75 per pound plus a shipping fee of $0.16 per pound.

is the Correct answer.

Option C.)

Answer:

D.) The cost of purchasing peaches for $7.00 per box of peaches with a delivery charge of $3.00

Step-by-step explanation:

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".

Solve the equation 186+10x=25.5x to find how many diving lessons x Jacy can take for the cost to be the same with and without a membership.

__ lesson(s)

Answers

Answer:12 lessons

Steps in image below:

The number of lessons that take for the cost to be the same with and without a membership will be 12.

What is the solution to the equation?

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

The equation is given below.

186 + 10x = 25.5x

Simplify the equation, then we have

25.5x - 10x = 186

15.5x = 186

x = 186 / 15.5

x = 12

The number of lessons that take for the cost to be the same with and without a membership will be 12.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ2

trying this again not sure if it went through the first time

Answers

The picture is really blurry for me. I can't read it...

Choose the correct answer to 992/16.

Answers

Answer:

62

Step-by-step explanation:

How many times can 16 go into 992.

16*10 = 160

16*50 = 800

Now you have 960

16*2 = 32

Now you have 996

Hope this helps ya!!

could someone help me with slope cause I am struggling a little bit​

Answers

Answer:

mmmmmmmmm sus

Step-by-step explanation:

Find the missing side lengths of each triangle.


Answers

since it’s an isosceles triangle, KM = LM.
4d - 13 = 12 - d
5d = 25
d = 5

hence,
LK = d + 6
= 5 + 6
= 11

the price of a televison 245 . the sales tax is 8%. what is the amount of sales tax?

Answers

Answer:

the sale tax is 19.60

Step-by-step explanation:

245*0.08=19.60

Answer:

19.6

Step-by-step explanation:

8 percent *245 =

(8:100)*245 =

(8*245):100 =

1960:100 = 19.6


HELP ASAP WILL GIVE BRAINLEIST

Solve for x in the diagram below

Answers

Answer:

X=20 3x=60

Step-by-step explanation:

a straight line is 180

180-100=80

4x=80

x=20

Answer:

We can create a equation to solve for x here.

We will use the following equation:

100 + 3x + x = 180

How to solve it step-by-step

[tex]100 + 3x + x = 180\\\\100 + 4x = 180\\\\4x = 80\\\\x = 20[/tex]

Kyra is participating in a fundraiser walk a-thon . She walks 2 miles in 30 minutes . If she continues to walk the same rate , determine how many minutes it will take her to walk 7 miles

Answers

Answer:

2 miles in 30 minutes

1 miles in 15 minutes

7 miles in 105 minutes

Thank you and please rate me as brainliest as it will help me to level up

Answer:

Step-by-step explanation:

$&+!8

In a survey of 3400 people who owned a certain type of car 2210 people said they would buy the type of car again what percent of the people surveyed were satisfied with the car? Plz help me! :)

Answers

65%

2210/3400 is .65, move the decimal 2 to the right

A rock is 7 feet below the surface of a river. If its position can be recorded as -7, what would the position of 0 represent?

A. On the surface of the river
B. At the bottom of the river
C. 7 feet above the surface of the river
D. 7 feet below the surface of the river

Answers

A. On the surface because the paragraph says that the rock is 7 feet below the surface, so we can infer that the surface of the river would be 0.

There are 36 tickets sold for a raffle for the Student Art Auction, and there are two prizes to be awarded. Dionte buys two tickets, find the probability that he will win both pris(Round your answers to five decimal places.)

Answers

Given :

There are 36 tickets sold for a raffle for the Student Art Auction, and there are two prizes to be awarded.

Dionte buys two tickets.

To Find :

The probability that he will win both price.

Solution :

Number of prizes available, p = 2

Probability of getting price from first draw :

[tex]P_1=\dfrac{2}{36}\\\\P_1=\dfrac{1}{18}[/tex]

Probability of getting price from second draw if he won first prize :

[tex]P_2=\dfrac{2-1}{36-1}\\\\P_2=\dfrac{1}{35}[/tex]

So, probability of winning both prize :

[tex]P=P_1\times P_2\\\\P=\dfrac{2}{36}\times \dfrac{1}{35}\\\\P=0.00159[/tex]

Therefore, probability of winning both prize is 0.00159 .

Hence, this is the required solution.

Hannah needs to calculate the cotangent of an angle. She uses the ratio
opposite leg
for her calculation. Did Hannah correctly calculate the cotangent of the angle?
adjacent leg
A
B.
Yes, Hannah correctly calculated the cotangent of the angle.
adjacent leg
No, Hannah should have used the ratio
opposite leg
hypotenuse
No, Hannah should have used the ratio
opposite leg
O c.
D.
No, Hannah should have used the ratio
adjacent leg
hypotenuse

Answers

Answer:

B. No, Hannah should have used the ratio [tex] \frac{adjacent}{opposite} [/tex]

Step-by-step explanation:

✍️The formula for calculating cotangent of an angle is given as:

[tex] cot = \frac{adjacent}{opposite} [/tex].

The ratio, [tex] \frac{opposite}{adjacent} [/tex], used by Hannah is the formula for calculating tangent of an angle.

Therefore, Hannah did not calculate the cotangent of the angle correctly.

She should have used, the ratio, [tex] \frac{adjacent}{opposite} [/tex] instead.

A family ordered two pizzas for dinner. They ate 1/2 of the first pizza and
1/4 of the second pizza. How much more of the first pizza did they eat?
A)1/2
B)1/4
C)1/8
D)3/4

Answers

Answer:

they ate 3/4 part of pizza

Step-by-step explanation:

=1/2+1/4

=1×2/2×2 + 1/4

=2/4+1/4

=3/4

Answer:

B) 1/4 because if the pizzas have 8 slices then 1/4=2 slices and 1/2=4 slices    4-2=2 and 2 slices equal 1/4 of the pizza.

Step-by-step explanation:

Hope it helps!

Have a good day/night :)

Brainliest pls?

I forgot how to simplify like this can someone explain to me how i do this?

Answers

Answer:

Just subtract 11 from 7.

Answer:

-4

Step-by-step explanation:

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