need help please thanks

Need Help Please Thanks

Answers

Answer 1

Answer:

k = 15

Step-by-step explanation:

4k - 2k = 2k

-21 - 11 = -10

2k - 10 = 20

30 - 10 = 20

2 × 15 = 30

Answer 2
Answer k=15 for the first one... not sure about other one
Need Help Please Thanks

Related Questions

Triangles 1 and 2 are both isosceles. They each have a 30 degree angle. Explain why these triangles don't have to be similar to each other.

Answers

Step-by-step explanation:

Triangle 1 can have 30°, 75° and 75° angles whereas Triangle 2 can have 30°, 30° and 120° angles.

Since they do not have all 3 congruent angles, they are not similar.

What is the slope of the line?

Answers

Answer:

-1

Step-by-step explanation:

Remember, slope is rise/run

Start from a point on the line and count up and over until you reach another point on the line.

For example, start from (0,-2), count up and left until you get to (-2,0). This gets you 2/2, which reduces to 1.

Since the line represents a negative slope, the slope is -1.

Divide.

2/3÷4/5 please help!!!

Answers

Answer:

5/6

Step-by-step explanation:

2/3 ÷ 4/5

~Copy Dot Flip

2/3 * 5/4

~Multiply

10/12

~Simplify

5/6

Best of Luck!

Answer:

5/6

Step-by-step explanation:

Keep Change Flip

2/3 x 5/4 = 10/12

10/12 simplifies to 5/6

laura graphed the function below y = 1 / 2(One over two)x + 4

if the range of the function is restricted to 2 ≤ y ≤ 6, what is the domain?

Answers

Step-by-step explanation:

y = 0.5x + 4

When y = 2, x = -4. (shown in graph)

When y = 6, x = 4. (shown in graph)

Hence the domain would be -4 <= x <= 4.

What is an equation of the line that passes through the points (-4,-1) and (2, 8)?

Answers

Answer: y=(3)/(2)x+5

Step-by-step explanation:

Algebra - Two Questions
1. A system of linear equations is shown​ below as well as the first steps that Raffi is using to solve this system of linear equations by substitution. Choose the statement that best describes how Raffi is progressing toward a solution.

7x+y=4

3x−2y=3

Solution: Solve the first equation to obtain y=−7x+4. Substitute this into the second equation to get 3x−2⋅−7x+4=3.


2. Solve the following system by the substitution method.

2x−y=−4

−5x+3y=14

Answers

Answer:

The answer is below

Step-by-step explanation:

1) Below are the linear equations.

7x+y=4         (1)

3x−2y=3      (2)

The above linear equations are a system of equations. The substitution method is a technique for solving systems of linear equations.

Given that:

7x + y = 4

y = 4 - 7x

substitute y = 4 - 7x in equation 2, hence:

3x - 2(4 - 7x) = 3

3x - 8 + 14x = 3

17x = 3 + 8

17x = 11

x = 11/17

Put x = 11/17 in y = 4 - 7x

y = 4 - 7(11/17)

y = -9/17

2) 2x−y=−4     (1)

 

−5x+3y=14     (2)

From equation 1:

2x−y=−4

y = 2x + 4

Put y = 2x + 4 in equation 2:

-5x + 3(2x + 4)  = 14

-5x + 6x + 12 = 14

x + 12 = 14

x = 2

Put x = 2 in y = 2x + 4:

y = 2(2) + 4

y = 8

Answer:

1. Raffi forgot to place the substituted expression in parentheses.

2. (2, 8)

Step-by-step explanation:

If you are taking the Solving Systems With Substitution Quick Check from Connexus here are all of the answers:

1. Solve one linear function in terms of one of its variables.

2. Substitute 3y from the second equation for x in the first equation.

3. Raffi forgot to place the substituted expression in parentheses.

4. Yes, because substituting the given ordered pair yields two true expressions.

5. (2, 8)

Which is equal to 7√3 ?


7^3


21


(13)^7


7 1/3

Answers

Step-by-step explanation:

D is the correct answer of this question ....

Which figure has line symmetry?
O A.
F
O B.
H
O C.
J
O D.
L
O E.

R

Answers

Answer:

??????

Step-by-step explanation:

Answer:

???

Step-by-step explanation:

Hi I need to figure if this is a function?

Answers

Answer:

no it is not a function

Step-by-step explanation:

function- for every input there is only one output

(1,7),(2,13),(3,13) it has two 13 so it is not a function

EEEEeee Can someone help?

Answers

Answer:

5.61 billion dollars.

Step-by-step explanation:

4.61+1.03=5.61

Answer:

0.223

Step-by-step explanation:

Change the divisor 4.61 to a whole number by moving the decimal point 2 places to the right. Then move the decimal point in the dividend the same, 2 places to the right.

We then have the equations:

103 ÷ 461 = 0.223

and therefore:

1.03 ÷ 4.61 = 0.223

Both calculated to 3 decimal places.

Eddie has saved up $45 to purchase a new camera from the local store. The sales tax in his county is 7% of the sticker price. Write an equation and solve it to determine the value of the highest priced camera Eddie can purchase with his $45, including the sales tax. Round your answer to the nearest penny

Answers

Answer:

hi

Step-by-step explanation:

Answer:   42.06 dollars

=================================================

Explanation:

x = price of camera before tax

1.07x = price of camera after tax

note how 1.07 is the result of 1 + 0.07

1 = 100%

0.07 = 7%

1.07 = 107%

So 1.07 means the price has gone up by 7%

Set 1.07x equal to 45 and solve for x

1.07x = 45

x = 45/1.07

x = 42.0560747663551

x = 42.06

The highest price Eddie can afford is $42.06, which is the value of the camera before tax is applied

--------------------

note how 7% of 42.06 = 0.07*42.06 = 2.9442 = 2.94

So the tax is $2.94 which adds onto the $42.06 to get

2.94+42.06 = 45

How many real and imaginary roots are there?

Answers

Answer:

5

Step-by-step explanation:

A new health drink has 150​% of the recommended daily allowance​ (RDA) for a certain vitamin. The RDA for this vitamin is 50 mg. How many milligrams of the vitamin are in the​ drink? There are nothing mg of the vitamin in the drink.

Answers

Answer:

the number of milligrams of the vitamin in the drink is 75 mg

Step-by-step explanation:

The computation of the number of milligrams of the vitamin in the drink is as follows:

= RDA of the vitamin × given percentage ÷ percentage

= 50 mg × 150 ÷ 100

= 75 mg

hence, the number of milligrams of the vitamin in the drink is 75 mg

We simply applied the above formula so that the correct value could come

And, the same is to be considered

A CD that has a regular price of $15.50 is on sale at a 25% discount. What is the sale price with a 7% sales tax? Round to the nearest cent.

Answers

Answer:

The answer should be $12.43

Solve this system of linear equations. Separate
the x- and y-values with a comma.
16x = 84 - 2y
14x = 72 - 2y

Answers

Answer:

6x = 84 - 2y

14x = 72 - 2y

Step-by-step explanation:

What is the percent Of decrease from 50 to 21

Please anwser accurate and I give brailiest

Answers

Answer:

29%

Step-by-step explanation:

To find the decrease from 50 to 21 you would subtract 50 - 21. You get 29. This is the same as 29/100. 29/100 is also 0.29 or 29%.

Hope it helps! (I'm so sorry if it's incorrect).

Answer:

57.9% please give me brainliest i used a percentage calculator :)))

Step-by-step explanation:

multiplicaiton problem where both factors are fractions and the product is less than the factors ANSWER NOW PLEASE

Answers

Answer:

There is no question attached.

Step-by-step explanation:

Answer:

1/5 * 1/2 = 1/10

Step-by-step explanation:

Choose any two factor fractions less than 1. The result (product) will be necessarily smaller than each of the factors. Above answer is an example

1/5 * 1/2 = 1/10, where it is clear that

1/10 < 1/5 and

1/10 < 1/2

150% of 150 is what number? (15 points I think?)

Answers

225 percent

Step-by-step explanation:

150 is the whole and 150 divided by 150 is 1.

1 whole is 100 percent

Answer:

225 will be correct

Step-by-step explanation:

What is absolute value?


The distance a number is from O on a number
line.

The Additive Inverse Property

The opposite of a number

Answers

Answer:

the distance a number did from 0 onna number line

i. After how many weeks will Jennifer and William have the same amount of money in their bank accounts?



ii. How much will be in their accounts?

Answers

Answer:

5 weeks$100

Step-by-step explanation:

Part i

Jennifer's account:

f(x) = 10x + 50

William's account can be expressed as:

g(x) = 14x + 30

Because the rate of change is 14 and y-intercept is 30

They will be same after x years, f(x) = g(x)

10x + 50 = 14x + 3014x - 10x = 50 - 304x = 20x = 5

The accounts will be same after 5 weeks

Part ii

The amount in the accounts after 5 weeks:

f(5) = g(5) = 10*5 + 50 = $100

Answer:

5 weeks

Step-by-step explanation:

Find the equation of willam's account:

1. find rate x1-x2

44-30      plug in

14 =rate  30=y-intercept     starting valuse is always intercept

44+14=58       check

f(x)= 10x+50

f(x)= 14x+30     solve

10x+50=14x+30   set values together

20=4x        subtract 10x and 30 from both sides

x=5

8h-19 for h=4 please help me I need help !?​

Answers

Answer:

13

Step-by-step explanation:

you have to do 8 times 4 minus 19

hope this helps dont 4get to like and star

-mercury

Answer:

13

Step-by-step explanation:

Given

8h - 19 ← substitute h = 4 into the expression

= 8(4) - 19

= 32 - 19

= 13

Find the inverse of Y=2x-6

Answers

Answer:

Step-by-step explanation:

f^-1(x)=x/2+3


To find the inverse, interchange the variables and solve for
y
y
.
f

1
(
x
)
=
x
2
+
3

The largest ball of yarn ever created has a radius of 6 feet. It took 30 years to create.

Using 3.14 for pi which choice is the volume of the ball of yarn nearest hundred

87.85 cubic feet
150.72 cubic feet
834.68 square feet
904.32 cubic feet​

Answers

Answer:

904.32 cubic ft

Step-by-step explanation:

To find the volume of a sphere, the formula is [tex]4\pi\frac{r^3}{3}[/tex]

First, 3.14 * 4 for 12.56.

The radius is 6, and that cubed is 216.

After that, divide 216 by 3 for 72

Then, 12.56 times 72, which gets you the final answer of  904.32 cubic ft.

(10 * 72) + (2 * 72) + (0.5 * 72) + (0.06 * 72)

720 + 144 = 864

864 + 36 = 900

900 + 4.32 = 904.32

Your answer is D, I took the test.

which expression can be used to determine the slope of the line that passes through the points (-7,3) and (1, -9)?

1. 1-(-7)/-9-3
2. 1+(-7)/-9+3
3. -9-3/1-(-7)
4. -9+3/1+(-7)​

Answers

Answer:

-9-3/1--7

Step-by-step explanation:

gradient (m) =-9-3/1--7

m =-12/8

If it takes 9 3/4 yards of material to make curtains for 3 windows, how much material is needed?

Answers

Answer:

3.25 yards of materials will be needed for 1 window

Answer:

3 1/4 (Verified) ✅

Step-by-step explanation:

This is a rate problem, so we will write rate as a proportion and write the desired rate with x for the unknown value we need to find.

9.75/3 = x/1

Cross-mulitply

3x = 9.75

Divide by 3

x = 3.25 or 3 1/4

Another great thing with proportions is that we can check them to ensure we got the correct answer. All we do is substitute our determined value in for x

9.75/3 = 3.25/1

9.75 = 9.75 ✅

The answer of x = 3 1/4 is correct.

Anyone good at math? will give brainlest to correct
A product goes from $25 to $27 in price.

The product has a percent increase of _____.

Answers

Answer:

8%

Step-by-step explanation:

27 - 25 = 2

2/25 x 100 = 8%

8% increase

answer is 8%

Answer:

8%

Step-by-step explanation:

2/25 is equal to 8/100 so therefore it is 8%

IM LITTERLY ON A MEET whats 4.01 in word form? Mixed number form?

Answers

Answer:

Four and one hundreds

Step-by-step explanation:

Answer:

word form: four and one hundredth

mixed number: 4[tex]\frac{1}{100}[/tex]

Step-by-step explanation:

four and one hundredth

4[tex]\frac{1}{100}[/tex]

Solve this equation.
Y/4-4=5 y=

Answers

Answer:

16/19

Step-by-step explanation:

Find me the point please

Answers

Answer:

(-2,-3)

Step-by-step explanation:

Pls pick one option to help me out

Answers

option is c=2/3

2/3+ 1/7 = 17/21

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