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zhenek [66]
3 years ago
5

Y-2=4 (x-1) in Standard form and steps

Mathematics
1 answer:
djverab [1.8K]3 years ago
8 0
Ax+by=c is standard form, so first, you need to distribute the 4 to inside the parenthesis, so now the equation becomes y-2 = 4x-4, next you need to get x and y on the same side and get the c variable onto the right side of the equation, subtract 4x from both sides, now we have y-2-4x =-4, now add 2 to both sides to get c by itself. Now the equation should look like this, -4x+y=-2. This is the equation now in standard form. Hope this helps.
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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
A rectangle is 10 inches wider than it is long. The perimeter is 48 inches. what is the length and width of the rectangle?
Liula [17]

Answer:

a) x represents length?

b) 10+x=48

d) 38 inches

Step-by-step explanation:

c) 10+x=48

subtract 10 to both sides

x=48-10

x=38

3 0
3 years ago
A gym has 2kg and 5kg weights. There are 10 disks in all. The total weight of 2kg and 5kg disks is equal to 29kg. Find the numbe
Simora [160]

Answer:

no of 5 kg disks is 3, and no of 2 kg disks is (10-3) i.e. 7

Step-by-step explanation:

Let the no of 2kg disks be a.

Let no of 5 kg disks be b.

2a+5b=29

a+b=10

Using substitution, we have

2(10-b) + 5b=29

20-2b+5b=29

20+3b=29

3b=9

b=3

So no of 5 kg disks is 3, and no of 2 kg disks is (10-3) i.e. 7

6 0
3 years ago
Kelly has some apples, bananas and oranges. The ratio of the number of apples to the total number of fruits us 1:4. There are 30
madreJ [45]
Total fruits→120=4u
apples=30=1u
3u=90→banana and oranges
banana→1u
oranges→2u
oranges=60

8 0
3 years ago
ILL MARK BRAINLIST PLS HELP
Charra [1.4K]

Answer:

Step-by-step explanation:

Your right I think it's c

8 0
2 years ago
Read 2 more answers
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