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Feliz [49]
3 years ago
7

HELP DUE IN 5 MInUTes ASAp

Mathematics
1 answer:
musickatia [10]3 years ago
5 0

Answer:

The expression that calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s is \mathbf{Speed=\frac{100}{20} }

Step-by-step explanation:

We are given:

Distance = 100 m

Time = 20 s

We need to find:

Speed

The formula used is: Speed=\frac{Distance}{Time}

Putting values and finding the expression

Speed=\frac{Distance}{Time}\\Speed=\frac{100}{20}

So, the expression that calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s is \mathbf{Speed=\frac{100}{20} }

<em>Note: Kindly recheck your options, As option B is not written correctly.</em>

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The histogram presents the compressive strengths of a sample of concrete blocks hardened for 28 days.
dusya [7]

Answer:

The question is not complete but I have uploaded the image to complete the question.

The missing rectangle has a relative frequency of 0.15, and this is the same as the height.

Step-by-step explanation:

Let us define what a frequency and relative frequency are

The frequency of a datum is the number of times a given item (datum) appears in the data set.

While the relative frequency is the fraction or proportion of times taken from the whole in which an item/datum occurs.

So, from the image I uploaded, the relative frequency column represents the height of the histogram. Let the height of the missing rectangle be <em>x.</em>

Therefore the heights of the rectangles written from left to right are 0.05, 0.1, 0.15, <em>x, </em>0.25, 0.2, and 0.1.

From the definition of relative frequency, the total sum of relative frequency is 1, if represented as decimals or fractions it can either be expressed in percentage, or decimal (fractions). In this question, it is represented in decimal, and the sum of all the relative frequency is 1.

0.05 + 0.1 + 0.15 + <em>x </em>+ 0.25 + 0.2 + 0.1 = 1 ;

0.85+ <em>x </em>=1

Therefore, <em>x </em>= 1 - 0.85= 0.15

3 0
3 years ago
Can anybody help me please
Alexxandr [17]

Step-by-step explanation:

I think you are clear. You can follow me to get more answers. Thanks.

5 0
2 years ago
3. the answer isn't c or d
Kay [80]

Answer:

A. Yes; no vertical line passes through two graphed points

Step-by-step explanation:

3 0
2 years ago
Find the value of X: 3x (-35) = 2x
kobusy [5.1K]
X=0
Pls mark brainliest
5 0
3 years ago
Pls help tap picture to see the three problems
valentinak56 [21]
1. Slope intercept form. First find two points to get slope: (0,-3) and (-3,-4). Slope is
(-4 - -3)/(-3 - 0)= 1/3
Use one of the points of (x,y) to solve for b
Y=1/3x + b
-3 = 1/3(0) + b
-3 = b so your slope intercept equation is
Y = 1/3x - 3

2. Rate of Change is slope. Your points are (0,10) and (24,6) so slope is (6-10)/(24-0)
= - 1/6 which means that for each 1 unit increase in x, y decreases by 1/6.

3. Standard form is ax + by =c
Notice it is the same line as in the first graph so it's the same equation
y = 1/3x - 3
First, you cannot have fractions, so you have to multiply the equation by 3 to get rid of the 1/3.
3y= x - 9. Now move the x over:
-x + 3y = - 9. Now get rid of the negative value on x by multiplying the entire equation by -1:
x - 3y = 9
8 0
3 years ago
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