4x + y for x = 2.8 and y = 5 ​

Answer:

[tex]-z^{2} =-25[/tex]

Step-by-step explanation:

The value of z is given as [tex]-5[/tex]

The expression is given as [tex]-z^{2}[/tex]

Substitute the value of z in the expression:

[tex]=-(-5)^{2}[/tex]  {add the value inside the bracket to avoid mistakes}

[tex]=-1[/tex] × [tex](-5)^{2}[/tex]

[tex]=-1[/tex] × [tex]((-5)[/tex] × [tex](-5))[/tex]

[tex]=-25[/tex]

Answer:

-7

Step-by-step explanation:

Answer:

4n-10

Step-by-step explanation:

First we will use n as any number.

the difference between each of the numbers is +4

This creates first part of the formula.

4n...

If you do 4n and replace n as one (For the first number of the sequence) then 4×1=4. You then have to find out how much you need to add or subtract to get -6 so the difference between 4 and -6 is -10.

This creates the second part of our formula.

4n - 10

You can check this by doing the same thing for the second number and replacing n with 2.

2×4=8

8 - 10= -2 which is the second number in the sequence which confirms this is correct.

Answer:

A) -16y+24

Step-by-step explanation:

Distribute -3 with 4y and -8

-12y+24-4y

Add -12y and -4y

-16y+24

Answer is -16y+24

Hope this helps!

Answer:

Hello! answer: 9

Step-by-step explanation:

Assuming this is a complementary angle (meaning it will add up to 90 degrees)

5 × 9 = 45 45 + 15 = 60 60 + 30 = 90 therefore x = 9 Hope that helps!

Answer:

Eliana saves at a greater rate because her unit rate of $42 per week is greater than Lana's $40 a week.

Answer:

3rd one

Step-by-step explanation:

Answer:

j = 15

Step-by-step explanation:

The angles shown form a straight line

Angles on a straight line must add up to 180 degrees

Hence, 2j + 32 + 6j - 2 + 30 = 180

( note that we just created an equation that we can use to solve for j )

We now solve for j using the equation we created.

2j + 32 + 6j - 2 + 30 = 180

step 1 combine like terms

2j + 6j = 8j

32 - 2 + 30 = 60

we now have 180 = 8j + 60

step 2 subtract 60 from each side

60 - 60 cancels out

180 - 60 = 120

we now have 120 = 8j

step 3 divide each side by 8

120 / 8 = 15

8j / 8 = j

we're left with j = 15

Answer:

k - 2 = 4d - 8

d + 1 = 4d - 8

Step-by-step explanation:

Daniel's age = d

Kevin's age = k

Given that, k = d + 3 -------------- (1)

Two years ago, the age of Daniel = d - 2

Two years ago, the age of Kevin = k - 2

Since,  two years ago, Kevin was 4 times as old as

Daniel, k - 2 = 4(d - 2)

Opening the bracket,

k - 2 = 4d - 8

Since the value of k is d + 3 (see (1))

d + 3 - 2 = 4d - 8

d + 1 = 4d - 8

(I am just giving the answer cause I LOVE Linear Equation )

1 + 8 = 4d - d

9 = 3d

9/3 = d

3 = d

Therefore, Daniel's present age is 3 and Kevin's present age = 6

Hope You understood

Thank You

Please mark me as brailiest                

Answer:

13

Step-by-step explanation:

To find the range substitute the value of x from the domain into the equation.

x = - 2 : y = -5(- 2) + 3 = 10 + 3 = 13

x = 0 : y = - 5(0) + 3 = 0 + 3 = 3

x = 1 : y = - 5(1) + 3 = - 5 + 3 = - 2

x = 3 : y = - 5(3) + 3 = - 15 + 3 = - 12

range is { - 12, - 2, 3, 13 }

with greatest value in the range being 13

Answer:

k = 8

Step-by-step explanation:

5k - 14 = 26

5k - 14 + 14 = 26 + 14

5k = 40

5k ÷ 5 = 40 ÷ 5

k = 8

Answer:

Future just cause I don't really have much interest about the past, moving forward as always. I'd like to see how things advance over time :")

I think a rewind is more useful in this case if I am able to correct my mistakes or have a moment back again, I'd like that.

Answer:

The value of the coin tosses per time in the air

Step-by-step explanation:

The value of n for which the experimental probability of tossing tails can equal the theoretical probability is any even number.

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

Example:

The probability of getting a head in tossing a coin.

P(H) = 1/2

We have,

The theoretical probability of tossing tails in a fair coin is 0.5 or 1/2.

The experimental probability of tossing tails in n trials is the number of times tails appear divided by n.

So, we want to find a value of n such that:

number of times tails appear / n = 0.5

Solving for n:

number of times tails appear = 0.5n

Since the number of times tails appear must be a whole number, n must be even.

This is because if n is odd, then it is not possible to have exactly half the trials result in tails.

For example,

If n=3, the possible numbers of tails that can appear are 0, 1, 2, or 3. Half of 3 is 1.5, which is not a whole number, so it is impossible to have exactly half the trials result in tails.

On the other hand,

If n=4, the possible numbers of tails that can appear are 0, 1, 2, 3, or 4.

Half of 4 is 2, which is a whole number, so it is possible to have exactly half the trials result in tails.

Therefore,

The value of n for which the experimental probability of tossing tails can equal the theoretical probability is any even number.

Learn more about probability here:

https://brainly.com/question/14099682

#SPJ3

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

Work Shown:

The cylinder has volume of...

V = pi*r^2*h

V = 3.14*4^2*8

V = 401.92

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

The rectangular prism has a volume of...

V = L*W*H

V = 10*7*6

V = 420

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

Subtract the two results:

420-401.92 = 18.08

The cylinder has roughly 18.08 more cubic units of volume compared to the rectangular prism.

Answer:

volume of cylinder: V=Sđ*h=R^2*3.14*8

volume of rectangular prism: V=Sđ*h=10*7*6

Please do the calculations yourself for the above 2 calculations  

Step-by-step explanation:

Answer:

50:1

Step-by-step explanation:

To simplify the ratio 50:1, we find the greatest common divisor of 50 and 1, and then we divide 50 and 1 by the greatest common divisor.

The greatest common divisor that you can use to simplify 50:1 is 1. Which means the answer to ratio 50:1 simplified is:

50:1

Hope this helped :)

Answer: your answer is 32/51

Step-by-step explanation:

Answer:

Step-by-step explanation:

To divide by a fraction, multiply by its reciprocal.

5 rows are to be added in the pattern if the ratio will be 7:6 between number of straight lines.

A pattern is a sequence. It can be an AP, GP also.

present ratio between number of straight lines and number of arcs

=8:9

When we add 1 row it will increase 4 straight lines and 3 arcs. So when 5 rows are added it will increase 20 straight lines and 15 arcs.

Then total number of straight lines will be 28 and the total number of arcs will be 24 and the ratio will be 28:24 which after dividing by 4 becomes 7:6.

Hence 5 rows are to be added in the pattern B to get the ratio 7:6.

Learn more about arcs at https://brainly.com/question/2005046

#SPJ2

Answer:

n = 55/8

Step-by-step explanation:

[tex]\frac{11}{n} = \frac{8}{5}\\\\cross \ multiply :\\ 8 \times n = 11 \times 5\\\\n = \frac{11 \times 5}{8} = \frac{55}{8}[/tex]

Answer:

[tex]n=\frac{55}{8}[/tex]

Step-by-step explanation:

First, cross multiply

[tex]\frac{11}{n} =\frac{8}{5}[/tex]

[tex](11)*(5)=8*n[/tex]

[tex]55=8n[/tex]

Now, flip the equation

[tex]8n=55[/tex]

Divide both sides by 8

[tex]\frac{8n}{8} =\frac{55}{8}[/tex]

[tex]n=\frac{55}{8}[/tex]

hope this helps :)

Answer:

x = 23°

Step-by-step explanation:

90 = 3x - 9 + x + 7

90 = 4x - 2

92 = 4x

x = 23°

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

100

Step-by-step explanation:

The two angles form a straight line which is 180 degrees

5+x  +75 = 180

Combine like terms

x+80 = 180

Subtract 80 from each side

x +80-80=180-80

x = 100

Answer:

x=100°

Step-by-step explanation:

(5+x)°+75°=180°(being a straight line)

x=100°

Answer:

step one you look at the question until you find the ex cuz it says 125 degrees and 125 degrees 2x

Answer:

x = 50

Step-by-step explanation:

The sum of all entire angles in this, esentially a pentagon, add up to 540

To find x, use the following

540 = 125 + 125 + 90 + 2x + 2x

540 - 125 - 125 -90 = 4x

200 = 4x

200 / 4 = x

50 = x

Answer:

26/12

simplify—>13/6

Step-by-step explanation:

Find the LCD (lowest common denominator)

The LCD of these two fractions is 12. Convert them to their denominators.

5/3 *4/4 = 20/12

2/4 *3/3= 6/12

Then add! 6/12 + 20/12 = 26/12

Simplify —> 13/6

Answer:

.8x = $70.40

x = 70.4/.8

x = $88

Step-by-step explanation:

Answer:

226131

Step-by-step explanation:

use calculator

Answer:

226131

Step-by-step explanation:

Answer:

d=11.7

Step-by-step explanation:

Answer:

an = a1 * [tex]8^{n-1}[/tex]

Couldn't find a subscript function so

an= a subscript n

a1 - a subscript 1

Step-by-step explanation:

Answer:

Y will be output and x is input

y = (x * 5) + 4

I think this is right.