Do we have to always use subtraction in finding measurements in numberline ?

Answer:

240 feet

Step-by-step explanation:

Given that,

The object falls 400 feet in 5 seconds.

We need to find how far it fall in 3 seconds.

5 seconds = 400 feet

1 second = 80 feet

So,

In 3 seconds,

d = (80×3) feet

= 240 feet

So, it will fall 240 feet in 3 seconds.

Answer:

In mathematics, the natural numbers are those used for counting and ordering.

Natural numbers include all the whole numbers excluding the number 0. In other words, all natural numbers are whole numbers, but all whole numbers are not natural numbers.

Hi, I'm trying to level up so if you are satisfied with my answer you don't have to but if you could give me brainliest that would be great.

Answer:

Step-by-step explanation:

Answer:

In the equation :

[tex]2x^2+6x-5[/tex]

α + β = -b/a

        = -6/2

         = -3

αβ = c/a

         = -5/2

I hope this will help you

Pls mark my answer as brainliest

Answer:

300

Step-by-step explanation:

just took edge test

Answer: 300

Step-by-step explanation:

Increasing the sample size by a factor of 4 will cut the margin of error in half.

Always multiply the original sample by 4 if we have a type of question like this. Therefore, 75x4= 300.

You are welcome

Answer:

D should be the correct answer

Step-by-step explanation:

Answer:

$14.7

Step-by-step explanation:

Given: Total = $58.80, Tax = $5.20

To find: The price of each CD before tax

Solution: The total price of the 4 CDs can be determined first by subtracting the tax from the total paid;  

$58.80 - 5.20 = $53.6

To find the price of each CD before tax, divide $58.80 by  4:

$58.80 ÷ 4 = $14.7

The price of each CD was $14.7 before tax.

Answer:

a) 179 people shopped at the grocery store or the drug store.

b) 21 people shopped at neither the grocery store nor the drug store

Step-by-step explanation:

I am going to treat these events as Venn sets.

I am going to say that:

Set A: Shopped at the grocery store

Set B: Shoped at the drug store.

121 shopped at the grocery store:

This means that [tex]A = 121[/tex]

91 shopped at the drug store:

This means that [tex]B = 91[/tex]

33 shopped at both businesses.

This means that [tex]A \cap B = 33[/tex]

a) How many people shopped at the grocery store or the drug store?

This is

[tex]A \cup B = A + B - (A \cap B)[/tex]

With the values given in the exercise.

[tex]A \cup B = A + B - (A \cap B) = 121 + 91 - 33 = 179[/tex]

179 people shopped at the grocery store or the drug store.

b) How many people shopped at neither the grocery store nor the drug store?

179 of 200 shopped in at least one. So 200 - 179 = 21 shopped at neither.

21 people shopped at neither the grocery store nor the drug store

Answer:

5.5hr

Step-by-step explanation:

Distance=550Km

Speed=100Km/hr

Speed=(Distance/Time)

Time=(Distance/Speed)

Time=550/100=5.5hr

Answer:

is B

Step-by-step explanation:

Answer:

Step-by-step explanation:

Whole numbers are numbers such as 0, 1, 2, 3, 4. Irrational numbers are numbers that cannot be represented as a ratio, such as [tex]\sqrt{2}[/tex]. The first one would be false.

Rational numbers are numbers that can be represented as a ratio, like [tex]\frac{4}{5}[/tex] or [tex]\frac{2}{1}[/tex]. Because 4/5 is not a whole number but is a rational number, the second one would be true.

Irrational numbers are numbers that cannot be represented as a ratio. Because integers can be represented as a ratio, since integers are numbers like -2, -1, 0, 1, 2, etc, all irrational numbers are not integers and, therefore, the third one is false.

Using the definition of rational numbers and integers from responses two and three, respectively, this fourth one is false.  

Answer:

52cm^2

Step-by-step explanation:

6*3+2((2*5)/2)+4*6

=18+10+24

=52

Answer:

77cm²

Step-by-step explanation:

Okay, so first you have to find the area of all the shapes that make up the net, I'm going to start with the triangle:

So the height is 2 and the base is 5, so we plug this into our equation to get:

2 x 5 ÷ 2 = 5

There's 2 triangles so:

5 x 2 = 10

Then we start on the rectangles, we're going left to right:

6 x 3 = 18

5 x 5 = 25

4 x 6 = 24

Then we add that all up:

10 + 18 + 25 + 24 = 77

So the net of the triangular prism is 77cm²

hope this helps:)

Answer:

500 X 7 = 3500, 3500m = 3.5 km

She walked 3.5 km in 1 week.

Answer:

the value of n = 0

Step-by-step explanation:

0 times anything always equals zero

Answer: s=13

Step-by-step explanation:

so first i did 180-76=104, then i did 104/2=52  

then i do a random number times 4, 4x9=36, so then i did 4x13=52,  so s=13

Answer:

d

Step-by-step explanation:

Answer:

0.8746 = 87.46% probability of at least 6 failures in 7 trials.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

7 trials

This means that [tex]n = 7[/tex]

The probability of success in any trial is 9%​?

So the probability of a failure is 100 - 9 = 91%, which means that [tex]p = 0.91[/tex]

Probability of at least 6 failures in 7 trials?

This is:

[tex]P(X \geq 6) = P(X = 6) + P(X = 7)[/tex]

In which

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 6) = C_{7,6}.(0.91)^{6}.(0.09)^{1} = 0.3578[/tex]

[tex]P(X = 7) = C_{7,7}.(0.91)^{7}.(0.09)^{0} = 0.5168[/tex]

[tex]P(X \geq 6) = P(X = 6) + P(X = 7) = 0.3578 + 0.5168 = 0.8746[/tex]

0.8746 = 87.46% probability of at least 6 failures in 7 trials.

Answer:

m = -22

Step-by-step explanation:

Formula for parabola in it's vertex form is given by;

y = a(x - h)² + k

Where (h, k) is the coordinate of the vertex.

We are told that vertex is at (-6, 6) and the roots are at 10 and m.

Thus;

y = a(x - (-6))² + 6

y = a(x + 6)² + 6

Since 10 is a root, thus;

0 = a(10 + 6)² + 6

-6 = 256a

a = -6/256

a = -3/128

Thus,the equation is;

y = (-3/128)(x + 6)² + 6

Since m is a root, then;

0 = (-3/128)(m + 6)² + 6

-6 = (-3/128)(m + 6)²

Rearranging, we have;

128 × 6/3 = (m + 6)²

256 = m² + 12m + 36

m² + 12m - 256 + 36 = 0

m² + 12m - 220 = 0

Using quadratic formula, we have;

m = 10 or -22

Answer:

b

Step-by-step explanation:

Answer: 44

Step-by-step explanation:

180-68-68 = 44

Answer:

69.75

Step-by-step explanation:

Answer:

b because it more useful

Answer:

b

Step-by-step explanation:

Answer:

mother A1 has daughter A2, and

mother B1 has daughter B2, and

mother C1 has daughter C2, and

mother D1 has daughter D2.

Step-by-step explanation:

.

Answer:

35

Step-by-step explanation:

Step-by-step guivivytfyuyufcfycuycuyfcuycfyfuccyctffcycfg.            G

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With the random sampling method, every item in the population has an equal chance of being chosen for the sample. Consequently, the process of chance sampling is another name for it.

The population mean's likelihood to differ from a sample mean is indicated by the standard error of the mean, or simply standard error. It reveals how much the sample mean would change if a study were to be repeated with fresh samples drawn from a single population.

Therefore, if the impacts of the random changes are more pronounced, the standard error of the mean will be greater; conversely, if there are no random charges, the standard error of the mean will be zero. The formula for the mean's standard error is: M=N.

The sample data, test type, and sampling distribution of the test statistic under the null hypothesis are used to determine the p-value (lower-tailed test, upper-tailed test, or two-sided test). The formula for calculating the p-value for a lower-tailed test is: p-value = P(TS ts | H 0 is true) = cdf (ts).

To learn more about Random sampling refer to:

https://brainly.com/question/24466382

#SPJ2

Answer:

The suggestion proposed considering special cases, so that’s what we’ll do.

One special case we could consider is when x=0. If h=r, then we have a hemisphere. You may have learnt that the surface area of a sphere is 4πr2, so the answer in this case is 2πr2. Likewise, we can consider the most extreme cases: when h=2r, we get an area of 4πr2 (the entire sphere), and when h=0, we get zero area.

So if we do manage to get a general formula, we will be able to check it in these special cases.

Another possible idea when x=0 is to consider what happens when h is very small. In this case, the surface area looks a lot like a circle, but the radius of the circle does not seem particularly easy to work out, so maybe we’ll leave this one for a moment. (There are things we can do to approximate the radius using more advanced techniques, but they are currently beyond us.)

Another thing we could consider is the situation where h is very small. Then the part of the sphere between the planes looks very much like the frustum of a cone, and we know how to find the (surface) area of such a shape – see Cones.

If we recall our answer from that problem, we find the formulae for the surface area

π(R+r)s=π(R+r)hcosθ=π(R2−r2)sinθ.

Here, R is the radius of the base of the frustum, r is the radius of the top, h is the perpendicular height, s is the slant length and θ is the angle the slant makes with the vertical.

Step-by-step explanation:

Answer: no

Step-by-step explanation:

Answer:

taco bell

Step-by-step explanation:

Answer:

i would say taco bell

Step-by-step explanation:

have a blessed day :)