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4 years ago

An expression is shown below:

Mathematics

1 answer:

Nikitich [7]4 years ago

7 0

Answer:

A) 5

Step-by-step explanation:

(10sqrt(51)x)/(2sqrt(51)x)=5

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3 years ago

Alison has 1/2 cup of yogurt for making yogurt for making fruit parfraits .Each parfrait requires 1/8 cup of yogurt. How many ru

Ket [755]

Answer:

4 because she has 1/2 cup of yogurt and she needs to split it into 1/8 sized proportions so you would divide, 1/2 divided by 1/8 and that equals 4

Step-by-step explanation:

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4 years ago

The question, Find the image vertices for a dilation with center (0, 0) and a scale factor of 4.

Alexeev081 [22]

Answer:

Answer is A(-3/4, 1/4), B(1,3/4), C(1/2,3/4) D(1/4,1)

Step-by-step explanation:

From the attached diagram, the coordinates are:

A(-3,1), B(4,-3), C(2,3), D(1,4)

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3 years ago

Prita grocery shoppingShe wants to buy a loaf of bread that costs $5.29, ten apples that cost $1.05 each, and three pounds of ba

Dima020 [189]

Answer:

the real answer is 18.46 but a round estimate would be 18 dollars if rounding to nearest whole. if u going to nearest tenth u would be going 18.5. :)

Step-by-step explanation:

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3 years ago

Read 2 more answers

Answer with all calculations

Sloan [31]

Answer:

Part a) The acceleration in the first 20 seconds is $0.35\ m/sec^2$

Part b) The distance between the two stops is 945 meters

Part c) The average speed during the journey is 5.9 m/sec

Step-by-step explanation:

Part a)

Let

x ---> the time in seconds

y ---> the velocity in m/sec

a ---> acceleration in m/ sec^2

we know that

The acceleration is equal to divide the velocity by the time

The acceleration is the slope of the linear equation of the graph

For the first 20 seconds

take the points

(0,0) and (20,7)

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute

$m=\frac{7-0}{20-0}$

$m=\frac{7}{20}=0.35\ m/sec^2$

therefore

The acceleration in the first 20 seconds is $0.35\ m/sec^2$

Part b) we know that

Looking at the graph

The two stops of the bus are the points (0,0) and (160,0)

The stops of the bus represent the x-intercepts of the linear equation

Values of x when the value of y is equal to zero

In the context of the problem

Values of the time when the velocity of the bus is equal to zero

To find out the distance, we need to determine the area of the graph

(because the distance is equal to multiply the velocity by the time)

The area of the graph in the interval [0,160] is equal to the area of two right triangles plus the area of rectangle

$A=\frac{1}{2}(20)( 7)+(130-20)(7)+ \frac{1}{2}(160-130)(7)$

$A=70+770+105=945\ m$

Part c) we know that

The average speed is equal to divide the total distance by the total time

$\frac{945}{160}=5.9\ m/sec$

7 0

3 years ago