Write the standard form 12 ten thousands 8 thousands 14 hundreds 7 ones

The dot plots show the number of first cousins the boys and girls in Miss Campbell‘s class have. Based on the dot plot, which se

PIT_PIT [12445]

Answer:

The correct choice is the third one.

Step-by-step explanation:

3 0

2 months ago

How do you write algebraic expressions to model quantities

Zina [12379]

To create algebraic expressions that represent quantities, translate the verbal description into mathematical terms following the sentence’s structure. For example, “one minus a number equals zero” becomes
1. 1 – n = 0.
Another example: John bought 25 apples and Julia bought 15. If Niccole bought twice as many as Julia, how many apples did Niccole buy?
Steps:First, restate the situation clearly so you can identify the relationship and how to form the expression. 
Solution:Julia = 15 apples Niccole = 2Julia Thus, 2Julia = 2(15) = 30 apples.

3 0

26 days ago

Read 2 more answers

(a) For what values of k does the function y = cos(kt) satisfy the differential equation 81y'' = −4y? (Enter your answers as a c

tester [12383]

Answer:

$k = \frac{2}{9}, k=\frac{-2}{9}$

Step-by-step explanation:

The initial scenario is a specific case of the subsequent one, so we will address the second case first.

Consider $y = A\sin(kt) + B\cos(kt)$ . Through the utilization of derivatives and trigonometric function properties, it is determined that

$y' = A\cdot k \cos(kt)- B \cdot k \sin(kt) = k (A\cos(kt)-B\sin(kt))$

$y'' = k(-A\cdot k \sin(kt)-B\cdot k \cos(kt)) = -k^2(y)$

The equation is represented as $81y''=-4y$ . It's important to note that since $y'' = -k^2y$ it leads to the equation

$-k^2 81y=-4y$ ,

which signifies that $k^2 = \frac{4}{81}$ . Consequently, $k=\pm\frac{2}{9}$

It's notable that in this instance, the value of k is independent of A and B. Thus, it applies universally to any values of A and B. The first scenario is included since it corresponds to A=0 and B=1.

5 0

1 month ago

Marlena solved the equation 2x + 5 = –10 – x. Her steps are shown below.

Leona [12618]

Answer: step 1. property of equality through addition

step 2. property of equality through subtraction

step 3. property of equality through division

Detailed explanation:

5 0

19 days ago

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The bar graph shows the numbers of reserved campsites at a campground for one week. What percent of the reservations were for Fr