All categories

1 year ago

write a number from 20 to 50 that has both tens and ones. use pictures and words to show the tens and ones.

Mathematics

2 answers:

Vikki [24]1 year ago

6 0

Answer:

Step-by-step explanation:

This problem is asking for a number between 20 and 50 that has tens and ones, it could be 25, 35 or 45. Basically, the answer could be all numbers that doesn't end in zero or one, because zero means that there aren't any ones, and if ends in one, that means it only has one one.

So, the answer we choose is 45, which has 4 tens and 5 ones, that is, 4 tens that equals 40, and 5 ones that equals 5.

slavikrds [6]1 year ago

5 0

The answer is 35 because it in beetween 20 and 50

You might be interested in

A plane intersects a prism parallel to the base of the prism. The cross section is a polygon with eight sides. The base of the p

Ksenya-84 [330]

I'm not quite sure but I believe the answer to your question is 4 sides

7 0

2 years ago

Read 2 more answers

Nswer two questions about Systems A AA and B BB: System A AA start text, end text System B BB { − 3 x + 12 y = 15 7 x − 10 y = −

rjkz [21]

Answer:

(Choice C) C Replace one equation with a multiple of itself

Step-by-step explanation:

Since system A has the equations

-3x + 12y = 15 and 7x - 10y = -2 and,

system B has the equations

-x + 4y = 5 and 7x - 10 y = -2.

To get system B from system A, we notice that equation -x + 4y = 5 is a multiple of -3x + 12y = 15 ⇒ 3(-x + 4y = 5) = (-3x + 12y = 15).

So, (-x + 4y = 5) = (1/3) × (-3x + 12y = 15)

So, we replace the first equation in system B by 1/3 the first equation in system A to obtain the first equation in system B.

So, choice C is the answer.

We replace one equation with a multiple of itself.

7 0

1 year ago

The value of the x- intercept for the graph of 4x-5y=40 is

andrew-mc [135]

4x - 5y = 40

4x = 40 + 5y
x = 10 + 5/4y

The x intercept is 10.

8 0

2 years ago

Explain how you can determine the number of real number solutions of a system of equations in which one equation is linear and t

Assoli18 [71]

Answer:

To determine the number of real number solutions of as system of equations in which one equation is linear and the other is quadratic

1) Given that there are two variables, x and y as an example, we make y the subject of the equation of the linear equation and substitute the the expression for y in x into the quadratic equation

We simplify and check the number of real roots with the quadratic formula, $x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}$ for quadratic equations the form 0 = a·x² - b·x + c

Where b² > 4·a·c there are two possible solutions and when b² = 4·a·c equation there is only one solution.

Step-by-step explanation:

3 0

1 year ago

In 2014, 85 percent of households in the United States had a computer. For a randomly selected sample of 200 households in 2014,

DochEvi [55]

Answer:

The mean of C is 170 households

The standard deviation of C, is approximately 5 households

Step-by-step explanation:

The given parameters are;

The percentage of households in the United States that had a computer in 2014 = 85%

The size of the randomly selected sample in 2014, n = 200

The random variable representing the number of households that had a computer = C

Therefore, we have;

The probability of a household having a computer P = 85/100 = 0.85

Let

Therefore;

The mean (expected) number in the sample, μₓ, = E(x) = n × P is given as follows;

μₓ = 200 × 0.85 = 170

The mean of C = μₓ = 170

The variance, σ² = n × P × (1 - P) = 200 × 0.85 × (1 - 0.85) = 25.5

Therefore;

The standard deviation, σ = √(σ²) = √(25.5) ≈ 5.05

The standard deviation of C, σ ≈ 5 households (we round (down) to the nearest whole number)

7 0

2 years ago

Read 2 more answers