Question 3 of 10
2 Points
What are the square roots of 81? Check all that apply.
A. 3
B. -9
C. 9.5
D. |9|
E. -3
F. 9​

Answer:

1. y+5=4x-40

2.y=4x-45

Step-by-step explanation:

To get the slope of a line you do y₂-y₁/x₂-x₁ so we plug in the values -9+5/9-10 and we get -4

Point-slope form states y-y₁=m(x-x₁) where m is the slope so plug in the values we get y+5=4(x-10) and you get y+5=4x-40 then turn this equation into y=mx+b and get y= 4x-45

Answer:

Whatever the gummy bears cost minus the amount left

Step-by-step explanation:

50= 8.25(5) + gummy bears

50=41.25 + gummy bears

8.75= gummy bears

Answer:

x = 18

Step-by-step explanation:

Given

[tex]\frac{3x}{5}[/tex] + 1 = [tex]\frac{4x}{15}[/tex] + 7 ( subtract 1 from both sides )

[tex]\frac{3x}{5}[/tex] = [tex]\frac{4x}{15}[/tex] + 6

Multiply through by 15 to clear the fractions

9x = 4x + 90 ( subtract 4x from both sides )

5x = 90 ( divide both sides by 5 )

x = 18

Answer:

it should be either option 1 or option 3

Step-by-step explanation:

Answer:

8.106

Step-by-step explanation:

Use Pythagorean Theorum for this question, a^2+b^2=c^2

If you put the numbers into the equation you get 6.3^2+5.1^2=c^2.

Simplify and get 65.7=c^2

To get rid of the square, you square root both sides, which will get you 8.106=c (since the answer wants round to 3 numbers behind the decimal point)

Therefore the missing length is 8.106cm. (For estimation just write a random number you think it would be before actually solving the problem.

Answer for #2:

Right Triangle

Not Right Triangle

Not Right Triangle

Right Triangle

Not Right Triangle

Step-by-step explanation:

Just use the pythagorean thereum for each of the questions to see if the values match up

Answer:

5q +65

Step-by-step explanation:

3q+5+2q-5+65

We can only simplify since there is no equals sign

Combine like terms

5q +65

Answer:

55

Step-by-step explanation:

3q+5+2q-5+65

-2q -2q

q+5-5+65

+5 +5

q+10+65

-10 -10

q+55

q=55

Answer:

Value of d is 20.

I hope it will help you.

Step-by-step explanation:

Answer:

[tex]a_{1}=-19[/tex]

Step-by-step explanation:

It is sum of arithmetic progression again.

[tex]$S_{15}=\frac{15}{2} [2a_{1}+(15-1)\cdot 2.5]$[/tex]

[tex]$240=\frac{15}{2} [2a_{1}+35]$[/tex]

[tex]$240=15a_{1}+535$[/tex]

[tex]-285=15a_{1}[/tex]

[tex]a_{1}=-19[/tex]

Answer:

Number of half units =10; V= 1 1/4

Step-by-step explanation:

1*5/4*1/2=5/4 = 1 1/4

Answer:

3) The function's leading coefficient is negative.

Explanation:

(1) Is not the answer because when x = 3, f(x) = 0.

(2) Is not the answer because when f(x) = -3,

x = 0.

(4) Is also not the answer because the y-values on both sides of (1, -4) are mirroring each other.

Therefore,

(3) is the answer, by elimination, but also because there is not proof of the leading coefficient being negative, as we don't see the original equation.

I hope this helped! :)

Answer:

9

Step-by-step explanation:

6x + 2y = 30

9x - 4y = 3

if we double the first equation and add up to second one, we cancel 4y:

now we can find y:

finally, x+y

Answer:

theres 1 set of 3

Step-by-step explanation:

This is a conditional: if the condition A is satisfied (true), then the result B is also satisfied (true).

Answer:

Its conditional , as the A decides what B has to do , whether this or that

Answer:

Given below

Step-by-step explanation:

M is Mikey and B is Betty in,

Current ages:

M= x

B= 3x (cuz she is 3 times older)

After 5 years

M= x+5

B= 3x+5 (5 years added to present age)

It says the ages of Betty after 5 years (3x+5) will be twice as much as Mikey (2(X+5))

So,

3x+5 = 2(x+5)

3x+5 = 2x+10

3x -2x = 10-5

x = 5

Therefore,

The current ages are

Betty : 3x = 3*5 = 15

Mikey: 5 (x)

You can verify by checking with the criterias or clues given in the question.. hope this helps..mark as brainiest if this was helpful:)

Answer: The current ages are

Betty : 3x = 3*5 = 15

Mikey: 5 (x)

Step-by-step explanation:

Hoped this helped

Answer:

D

Step-by-step explanation:

There is no equation which have no solution.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

1. 1/(x - 31) = 5

1 = 5 · (x - 31)

1 = 5 · x - 155

5 · x = 156

x = 31.2

2. 12 · x - 11 = 0

12 · x = 11

x = 11/12

3. 15 - 3 · x = - 8

3 · x = 23

x = 23/3

4. - x + 91 = 0

x = 91

Learn more about Equation here:

brainly.com/question/21107621

#SPJ7

The statement presents typing mistakes and is incomplete. Correct form is shown below:

Which equation has no solution?

A. 1/(x- 31) = 5

B. 12 · x - 11 = 0

C. 15 - 3 · x = - 8

D. - x + 91 = 0

E. Neither of all

Answer:

H≤7

Step-by-step explanation:

Answer:

30 miles

Step-by-step explanation:

We can use a ratio to solve

6 miles          x miles

------------     = -------------

20 minutes        100 minutes

Using cross products

6 * 100 = 20 x

Divide each side by 20

600/20 = 20x/20

30 =x

Answer:

30 miles

Step-by-step explanation:

First you want to divide 100mins by 20mins which will equal 5

Then multiply 5 by 6 which will equal 30

Answer:

negative

Step-by-step explanation:

Since the parabola does not cross the y axis, there are no real roots,

When there are no real roots, the discriminant is less than zero  ( or negative)

Answer:

THE ANSWER IS NEGATIVE

Step-by-step explanation:

A

P

E

X

Answer:

a) y=(300-150)x-2100

b) y=150x-2100

c) y=150(140)-2100

y=18900

Jose was wrong. He did not make 20000 dollars last year.

Answer:

A: ((300-150) * 140) - 2100

B: 21000-2100= $18,900 profit.

Jose made 18,900 dollars worth of profit. He did not make $20,000 worth of profit.

Answer:

700 passengers

Step-by-step explanation:

     4/5 = 560

(÷4)               (÷4)

     1/5 = 140

     560 + 140 = 700

I hope this helps <3

Answer:

700 passengers

Step-by-step explanation:

let total be x

560= 4/5 of total

therefore=

equating

560=4/5x

560*5/4=x

700=x

therefore answer is 700 passengers

Answer:

census is a total of the population of a county and/or state.

samples are random selections of people or things

Step-by-step explanation:

If Sky wanted to get a survey from 100 kids who liked baseball or softball in her school. She would not pick the first 100 because it is not random. She would choose choose kids at random till she got her quota.

Answer:

A

Step-by-step explanation:

Its A because based on where the major drops and or rises in the lines it matches up to the numbers for the students. You really just got to eye it and try and level out where the two lines have the same number to see if it matches. Hopefully this was somewhat helpful lol. I'm not the best at giving explanations

Answer:

50 songs at $35

Step-by-step explanation:

Answer:

x = 50, y = 35

Step-by-step explanation:

Solve this system of linear equations by using substitution.  Equate the two equations to one another, thus eliminating y:

0.4x + 15 = 0.2x + 25

subtract 0.2x from both sides, obtaining:  0.2x + 15 = 25, or, after combining the constants, 0.2x = 10.

Finally we divide both sides by 0.2, which results in x = 50.

Use the first equation to find y:  y = 0.4(50) + 15 = 20 + 15 = 35

[tex]See Solution Below;[/tex]  

[tex]A. 6m - 2 = m + 13,\\6m - m = 13 + 2,\\5m = 15,\\m = 3;\\ OneSolution[/tex]   [tex]F. 18x - 5 = 3 * ( 6x - 2 ),\\18x - 5 = 18x - 6,\\18x - 18x = - 6 + 5,\\0 = - 1 ; NoSolution[/tex]    

[tex]B. 4y + 9 = 4y - 7,\\4y - 4y = - 7 - 9,\\0 \neq - 16 ; NoSolution[/tex]

[tex]C. 3c + 2 = 3c + 2,\\3c - 3c = 2 - 2,\\0 = 0 ; Infinite Solution[/tex]

[tex]E. - 8j + 14 = - 2 * ( 4j - 7 ),\\- 8j + 14 = - 8j + 14,\\- 8j + 8j = 14 - 14,\\0 = 0 ; InfiniteSolution[/tex]

[tex]D. 3 * ( x - 4 ) = 2x + 6,\\3x - 12 = 2x + 6,\\3x - 2x = 6 + 12,\\x = 18 ; OneSolution[/tex]

Answer:

B. 7x-5 = 11

Step-by-step explanation:

you're putting -5 instead y in equation 7x+y = 11 so 7x+(-5) =11

Answer:

Step-by-step explanation:

(x +13) + (4x + 2 ) = 180

5x + 15 = 180

Subtract 15 from both sides

5x = 180 - 15

5x = 165

Divide both sides by 5

x = 165/5

x = 33

Check

x + 13 = 33 +13  = 46

And

4x + 2 = 4*33 + 2 = 132 + 2 = 134

Answer:

3 * 5x

3 * 5(2)

3 * 10

30

Answer: 12.6 years

Step-by-step explanation:

Hi, to answer this question we have to apply the compounded interest formula:  

A = P (1 + r/n) nt  

Where:  

A = Future value of investment (principal + interest)  

P = Principal Amount  

r = Nominal Interest Rate (decimal form, 4/100= 0.04)

n= number of compounding periods in each year (1)

t = years

Replacing with the values given  

8200= 5000(1+ 0.04/1)^1(t)

Solving for t

8200 =5000 (1.04)^t

8200/5000 =(1.04)^t

1.64 =(1.04)^t

log 1.64 =log (1.04)^t

log 1.64 = t log (1.04)

log 1.64/ log (1.04) =t

t = 12.6 years

Answer:

Bag 1: 20

Bag 2: 40

Step-by-step explanation:

Let x be the amount taken out of bag 2

Then the amount left in each bag can be written as:

Bag 1: 50-3x

Bag 2: 50-x

Since we know that half of bag 2 is bag 1, that gives us:

50-3x = 1/2(50-x)

-> 50-3x = 25-x/2

Now lets isolate x and solve:

25 = 5x/2

-> 50 = 5x

-> x = 10

So plug x bag in for the original equations:

Bag 1: 50-3x = 50-3(10) = 20

Bag 2: 50-x = 50-10 = 40