awnser please :((((((((((((((((((((

Answer:

Step-by-step explanation:

Subtract 7 from both sides.

We have:

-3z-4z=21

So:

-7z=21

21/-7 = -3

The answer is C.

Answer:

Lin won't be charged $5.95 per day because her account balance is quite above zero(0), except her account balance falls down to zero, then she would be charged for subsequent deposits made into the account daily.

Answer:

Domain: 7,2

Range: 9,7

Slope is 2/5

Step-by-step explanation:

Domain is basically the x coordinates, which are 7 and 2 in this case. Range is the y coordinates: 9 and 7.

The slope is basically the line that connects these two dots.

Slope formula is (y2-y1)/(x2-x1)

But the points of the grid would be listed as (x1,y1) (x2,y2)

I don't know if I'm explaining this well enough, but if you follow that formula you get (7-9)/(2-7).

That equals to 2/5.

I hope this helped

Answer:

The function has an even degree

The function has a negative leading coefficient

^^^^ Hope this helps! :)

Answer: Arnav is 1.8m

Step-by-step explanation: I multiplied 1.5 by 0.20 and then added that answer to 1.5 and then I got 1.8

:D

Answer:

1.5 x 2= 3m its really just that easy.... it took me a while to learn this trick but it works for most things.

Answer:

0.926

Step-by-step explanation:

Since it ask as decimal you will have to 0. and then the number which 926. Hope this helps, thank you !!

She was at 40 feet below, she swam up getting so she was then at 40-10 = 30 feet below sea level.

She the swan 4 feet down so she ended up at 30 + 4 = 34 feet below sea level.

The answer is 34 feet below sea level (-34)

Answer: y-intercept is 1

Step-by-step explanation: it's one because it is on the y-axis.  

Answer:

the y-intercept is -4

Step-by-step explanation:

brainliest please ??

Answer:

1-13

2-225

Step-by-step explanation:

Answer:

no because the ratio 3:4 is not equivalent to 4:5

Step-by-step explanation:

Answer:

Step-by-step explanation:

I don't understand your question so please change the question so I can answer you.

Answer:

it is parallel to the y axis

Answer:

D

Step-by-step explanation:

Since x equals 4, it would be parallel to the x-axis

Answer:

x

Step-by-step explanation:

Answer:

Yes by SAS

Step-by-step explanation:

if you do 42 / 18 you see that the relationship between the sides is 2.3333... so that is one proportional side

Then, you see that there is one angle in both triangles that is 76 degrees, so that is one equal angle

then, you can do 21 / 9 = 2.33333... which is the same as the first proportion which means that is another proportional side.

then you have a side, angle, and a side, so it's SAS

Answer:

[tex] {2b}^{2} + 32b + 128[/tex]

Factor and get

[tex]x = - 8[/tex]

Answer:

here i got you

Step-by-step explanation:

In one particular case, when vertical angles are right angles (that is, lines that form this pair of vertical angles are perpendicular), their sum is equal to a straight angles and, therefore, they are supplemental. See the picture below that represents

Answer:

x+2y=-1

-×+3y=-19

5y=-20

y=-20/5

y=-4

x=0

Step-by-step explanation:

− 1 − 9 + ( −15) + (− 8) + 3 [B.O.D.M.A.S rule]

= − 1 − 9 −15 − 8 + 3

= 3 - 1 - 9 - 15 - 8 (First and last subtraction)

= 3 - 33

= -30(Ans)

Answer:

-30

Step-by-step explanation:

Well we don't necessarily have to follow pemdas right now, because there is only addition and subtraction, and they are on the same level and they don't matter which order they are used in.

So, with that being said, let's go step by step. I could've done an easier way, but for the sake of this question, I will do it a way that is a bit longer.

So, -1-9= -10.

For the next number, if there is a + and then a () and there is a negative number in the parenthesis, forget about the + and just subtract 15.

-10-15= -25

Same for the next number. -25-8= -33

-33+3= -30

The easier method is just combining the negative numbers and adding/subtracting them and then combining the positive numbers and adding/subtracting them, and then combining both results to get your answer.

Anyways, hope this helped you! If so, please leave a rating and a thanks, and let me know if I was correct! (hopefully brainliest, but up to you) Have a great day!!

Answer:

the answer of 21-(-17)=21+17=38

Step-by-step explanation:

1) Thousands

2) 100 thousands

3) tens

Expression of the collection of variables and constant. The value of the given expression 2x² - y¹ + 3x⁰ for x = 3 and y = 5 will be 16.

An expression is a combination of some mathematical symbol such that an arithmetic operator and variable such that all are constrained and create an equation.

Expression is very useful to determine the end or root value of constraint.

As per the given expression,

2x² - y¹ + 3x⁰

Substitute, x = 3 and y = 5

2(3)² - 5 + 3(1) = 18 - 5 + 3 = 16.

Hence "The value of the given expression 2x² - y¹ + 3x⁰ for x = 3 and y = 5 will be 16".

To learn more about expression,

https://brainly.com/question/14083225

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Answer:

its A

Step-by-step explanation:

can i have brainliest

Answer:

139

Step-by-step explanation:

Cause it is

The smallest sample size that will produce the desired interval is 139.

Option C is the correct answer.

The margin of error is the amount of error or uncertainty in a statistical estimate, usually an estimate of a population parameter based on a sample.

We have,

The formula for calculating the margin of error for a confidence interval is:

Margin of error =  z x (√(p x (1-p))/√(n))

where:

z =  the z-score corresponding to the desired confidence level

p =  the estimated proportion of the population that exhibits the behavior of interest (in this case, using a certain brand of a mobile phone)

n =  sample size

We want the margin of error to be at most 0.07, which means we need to solve for the smallest possible value of n that satisfies this condition.

We also want a 90% confidence interval, which corresponds to a z-score of 1.645.

Therefore,

we have:

0.07 = 1.645 x (√(p*(1-p))/√(n))

Squaring both sides and solving for n, we get:

n = ((1.645)² x p x (1-p)) / (0.07)²

We don't know the value of p, so we need to use the worst-case scenario, which is when p = 0.5 (which gives the largest possible value of n for any given margin of error).

Plugging this into the formula, we get:

n = ((1.645)² x  0.5 x (1-0.5)) / (0.07)²

n = 138.55

Since n must be a whole number, the smallest sample size that will produce the desired interval is 139.

Therefore,

The smallest sample size that will produce the desired interval is 139.

Learn more about margin of error here:

https://brainly.com/question/10501147

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Answer + Explanation:

let x be the measure of angle x

let y be the measure of angle y

[tex]\left \{ {{x + y = 180} \atop {x=24+y}} \right.[/tex]

Now, solve:

plug x = 24 + y into x + y = 180

24 + y + y = 180

24 + 2y = 180

2y = 156

y = 78

Now, plug this back into the equation x = 24 + 78

x = 102

Answer:

x= 102

y= 78

Step-by-step explanation:

x+y=180

x= y + 24

2x-24 = 180

Answer:

Base = 3√5

Step-by-step explanation:

Given:

Hypotenuse = 9

Perpendicular = 6

Find:

Base(x)

Computation:

Using Pythagorean theorem

Base = √Hypotenuse² - Perpendicular²

Base = √9² - 6²

Base = √81 - 36

Base = √45

Base = 3√5

its should be c.

Because its approximately that many ppl

Answer:

Its C

Step-by-step explanation:

Answer:

238 miles

Step-by-step explanation:

340 miles = 5 hours

So get 1 hour by dividing by 5 on both sides

5/5 = 1 hr

340/5 = 68

So in 1 hour they travel 68 miles

You want to find 3 1/2 hours

Do 68 x 3 to get 3 hours

So it would be 68 x 3 =204

Plus the half an hour - which you get by doing 68/2 = 34

68 = 1 hour, so half of that must be half an hour

So to get the final distance you do 204 (3 hours) +34 (half an hour)

204 + 34 =238

Answer:

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