2x + 7y + 3x − 4y simplify

Answer:

The answer is C "The values of h(t) when t = 4 and 5 should be 0."

Jennifer has 27 nickels and 56 dimes.

Let's use the variables n and d to represent the number of nickels and dimes Jennifer has, respectively.

We can set up two equations based on the given information:

Now, we can solve this system of equations.

We can rewrite equation 1 as n = 83 - d and substitute it into equation 2:

0.05(83 - d) + 0.10d = 6.95

4.15 - 0.05d + 0.10d = 6.95

0.05d = 6.95 - 4.15

0.05d = 2.80

d = 2.80 / 0.05

d = 56

Substituting the value of d back into equation 1, we find n = 83 - 56 = 27.

Therefore, Jennifer has 27 nickels and 56 dimes.

The diagonals of a square are perpendicular to each other. Thus, the correct option is A.

It is a polygon with four sides. The total interior angle is 360 degrees. A square's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.

If the angle between the diagonals of the quadrilateral is not equal to the right angle, then the quadrilateral is a rectangle, parallelogram, or trapezoid.

If the angle between the diagonals of the quadrilateral is equal to the right angle, then the quadrilateral is a rhombus and square.

The diagonal of the square intersects at the right angle. Then the diagonals of a square are perpendicular to each other.

Thus, the correct option is A.

More about the square link is given below.

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The probability that a dessert chosen at random contains nuts given that it contains chocolate is approximately 0.34.

To find the probability that a dessert chosen at random contains nuts given that it contains chocolate, we can use the formula for conditional probability:

P(N|C) = P(C and N) / P(C)

We are given that the probability that a dessert contains chocolate is 73% or 0.73, and the probability that a dessert containing chocolate also contains nuts is 25% or 0.25. Therefore, P(N|C) = 0.25 / 0.73 ≈ 0.34, rounded to the nearest tenth of a percent.

The probability that a dessert contains nuts given it contains chocolate is approximately 34.3%.

Probability of a dessert containing chocolate = 73% (0.73)
Probability of a dessert containing nuts given it contains chocolate = 25% (0.25)
Probability that a dessert contains nuts given it contains chocolate
Let C be the event that the dessert contains chocolate and N be the event that it contains nuts.

Therefore, the probability that a dessert chosen at random contains nuts given that it contains chocolate is approximately 34.3%.

To convert 2x = 2y into polar form, replace x with r cos(theta) and y with r sin(theta), then simplify, resulting in the polar equation cos(theta) = sin(theta) or theta = pi/4 + kpi, where k is an integer.

To convert the equation 2x = 2y to polar form, we need to use the relationship between Cartesian coordinates (x, y) and polar coordinates (r, (theta)). The transformations are given by x = r cos(theta) and y = r sin(theta).

Starting with our original equation 2x = 2y, we can substitute the transformations into the equation, which gives us 2(r cos(theta)) = 2(r sin(theta)). We can divide both sides by 2 to simplify, which results in r cos(theta) = r sin(theta). Since r cannot be 0 (because then both x and y would be 0, which does not satisfy the original equation), we can divide both sides by r, leading to cos(theta) = sin(theta). This equation implies that tan(theta) = 1. When tan(theta) equals 1, theta can be written as theta = arctan(1) or theta = pi/4 + kpi, where k is an integer representing the multiple full rotations around the circle.

Answer:

B. 29%

Step-by-step explanation:

if there is a 30% chance of sun tomorrow and a 20% chance of wind and no sun.

what is the probability that it is windy, given that it is not sunny.

A: it is not sunny

P(A)=0.7    (since, chance of being sunny=30% then chance of not being sunny=70%)

B:it is windy

A∩B:it is windy and not sunny

P(A∩B)=0.2  (chance=20%)

B/A:it is windy given that it is not sunny

Baye's theorem states that:

P(A∩B)=P(B/A)×P(A)

0.2=P(B/A)×0.7

⇒ P(B/A)= 2/7=0.286

             ≈ 29%

Hence, probability that it is windy, given that it is not sunny is:

 B.  29%

Answer:

Kelli's height = [tex]\frac{3}{4}x[/tex]

Step-by-step explanation:

Here, x represents the Ted's height .

As per the statement:

Kelli is [tex]\frac{3}{4}[/tex] as tall as her brother Ted.

We have to find an expression to describe Kelli's height.

then;

[tex]\frac{3}{4}[/tex] as tall as her brother Ted means [tex]\frac{3}{4}x[/tex]

⇒Kelli's height =  [tex]\frac{3}{4}x[/tex]

Therefore, an expression to describe Kelli's height is, [tex]\frac{3}{4}x[/tex]

Answer:

Step-by-step explanation:

The perimeter is the sum of all sides of the figure. In this case, the perimeter of the rectangle would be: [tex]P=W+L+W+L[/tex]; where [tex]W[/tex] is width, and [tex]L[/tex] is length.

According to the problem, the width is two times the length:

[tex]W=2L[/tex]

Replacing this relation in the perimeter equation, we have:

[tex]P=2W+2L\\P=2(2L)+2L\\P=4L+2L\\P=6L[/tex]

Therefore, the perimeter is six times the length of the rectangle. The correct answer is B.

The first option is correct:

1.) if to rays are opposite.

Method 1

Applying the Pythagorean Theorem

we know that

[tex]10^{2}= 5^{2} +a^{2}[/tex]

Solve for a

[tex]100= 25 +a^{2}[/tex]

[tex]a^{2}=100-25[/tex]

[tex]a^{2}=75[/tex]

[tex]a=\sqrt{75}=5 \sqrt{3}\ units[/tex]

therefore

the answer is

the length of the altitude is [tex]5 \sqrt{3}\ units[/tex]

Method 2

we know that

[tex]sin(60\°)=\frac{\sqrt{3}}{2}[/tex] -------> equation A

and

in this problem

[tex]sin(60\°)=\frac{a}{10}[/tex] --------> equation B

equate equation A and equation B

[tex]\frac{\sqrt{3}}{2}=\frac{a}{10}\\\\a=\frac{10\sqrt{3}}{2}\\\\a=5 \sqrt{3}\ units[/tex]

therefore

the answer is

the length of the altitude is [tex]5 \sqrt{3}\ units[/tex]

In part (a), the expression for cost as a single fraction is (6x^2 + 900000x) / x. In part (b), we substitute x = 240 and simplify the expression to find the cost for ordering and storing 240 units of the product.

(a) To write the expression for cost as a single fraction, we need to combine the terms in the numerator. The numerator is 6x + 900000 and the denominator is x. To combine the terms, we multiply 6x by x to get 6x^2, and then add 6x^2 + 900000x in the numerator. Therefore, the expression for cost is (6x^2 + 900000x) / x.

(b) To determine the cost for ordering and storing x = 240 units of this product, we substitute x = 240 into the expression for cost. Plugging in x = 240, we have (6(240)^2 + 900000(240)) / 240. Simplifying this expression gives us the cost for ordering and storing 240 units of the product.

The cost function C = 6x + 900000/x can be written as a single fraction as C = (6x² + 900000) / x. When x = 240, the cost for ordering and storing the units is calculated to be $5190.

The cost C of ordering and storing x units of a product is given by the formula C = 6x + 900000/x. To write this expression as a single fraction, we can find a common denominator and combine the two terms:

C = (6x²+ 900000) / x

For part (b), to determine the cost for ordering and storing x = 240 units of this product, we substitute 240 for x in the expression:
C = (6(240)² + 900000) / 240

Which simplifies to:
C = (6(57600) + 900000) / 240

C = (345600 + 900000) / 240

C = 1245600 / 240

C = 5190

Therefore, the cost for ordering and storing 240 units of this product is $5190.

Answer:  [tex]\overline{WX}\cong \overline{WV},\ \overline{VA}\cong\overline{AZ}[/tex]

[tex]\overline{XY}\cong\overline{YZ}[/tex]

[tex]\overline{UV}\cong \overline{UZ}\cong \overline{UX}[/tex]

Step-by-step explanation:

In the given figure we have a triangle , in which U is the circumcenter of triangle XVZ.

We know that the circumcenter is equidistant from each vertex of the triangle.

Since , the line segments which are representing the distance from the vertex and the circumcenter are [tex]\overline{UV},\ \overline{UZ},\ \overline{UX}[/tex]

Also, The circumcenter is at the intersection of the perpendicular bisectors of the triangle's sides.

Then ,  [tex]\overline{WX}\cong \overline{WV},\ \overline{VA}\cong\overline{AZ}[/tex] and [tex]\overline{XY}\cong\overline{YZ}[/tex]

Hence, the segments which are congruent are [tex]\overline{UV}\cong \overline{UZ}\cong \overline{UX}[/tex]

 [tex]\overline{WX}\cong \overline{WV},\ \overline{VA}\cong\overline{AZ}[/tex]

[tex]\overline{XY}\cong\overline{YZ}[/tex]

Answer:  Simplified form is

[tex]1\frac{5}{6}[/tex]

Step-by-step explanation:

Since we have given that

[tex]5\frac{1}{3}-3\frac{9}{18}[/tex]

Now, we will simplify it with the following steps :

[tex]5\frac{1}{3}-3\frac{9}{18}\\\\=\frac{16}{3}-3\frac{1}{2}\\\\=\frac{16}{3}-\frac{7}{2}\\\\=\frac{32-21}{6}\\\\=\frac{11}{6}\\\\=1\frac{5}{6}[/tex]

Hence, simplified form is

[tex]1\frac{5}{6}[/tex]

Answer:

x=4

Step-by-step explanation:

The value of x that  makes the triangle equilateral is 4

For an equilateral triangle, all three sides must be equal in length. In this case, the sides are represented by 3x, 2x + 4, and 5x - 8.

To find the value of x that makes the triangle equilateral, set up an equation:

3x = 2x + 4 = 5x - 8

Now, solve for x:

3x = 2x + 4.

Subtract 2x from both sides:

x = 4

Now, check if x = 4 satisfies the other two parts: 2x + 4 and 5x - 8.

For 2x + 4:

2(4) + 4 = 8 + 4 = 12

For 5x - 8:

5(4) - 8 = 20 - 8 = 12

Since all three expressions are equal to 12, the value of x = 4 makes the triangle equilateral.

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