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asambeis [7]
3 years ago
15

Evaluate 3(x – 1) + 2 when x = 5.

Mathematics
2 answers:
gogolik [260]3 years ago
8 0
3(5-1)+2
15-3+2
15-5
10
hoa [83]3 years ago
6 0
The answer would be 8/5
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Work out the equation of the line which has a gradient of -2 and passes through the point (1,7)
Ilya [14]

point slope form of a line

y-y1 = m(x-x1)

y-7 = -2 (x-1)

if you want it in slope intercept form

y-7 = -2x +2

add 7 to each side

y = -2x +9

5 0
3 years ago
A container is 1/3 full pf water and 1/4 full of oil. What fraction of the container is empty?
Helga [31]

Answer

IS 2/4

Step-by-step explanation:

1/3 = 4/12  1/4 = 3/12  4/12+3/12= 6/12 = 2/4

8 0
3 years ago
Sara bought a new doll at a 20% off sale and saved $12. What was the regular price of the doll?
nordsb [41]

Answer:

regular price = $15

Step-by-step explanation:

Represent the regular price by d.  Then the discount was 0.20d, and the sale price was (1 - 0.20)d, or 0.80d, which is $12.

Solving for d, we divide both sides by 0.80:

d = regular price = $15

5 0
2 years ago
An area of a wall is 50 in. wide and 35 in. high. Will a mirror with a 62 in. diagonal fit in it? Identify the correct explanati
Lubov Fominskaja [6]

Answer:

yes

Step-by-step explanation:

i used the pythagorean theorem and used 50 and 35 as the legs and the diagonal as the hypotenuse

35² + 50² = c²

c² = 3725

c = \sqrt{3725}, which is 61.03

since 61.03 is less than 62" then it should fit in

4 0
3 years ago
Read 2 more answers
PLEASE HELP, I REALLY NEED IT!!!
inessss [21]

Let's break this down into what each piece is.

One flat= one whole= 1

One rod= one tenth= 0.1

One unit= one hundredth= 0.01

a) We have 1 flat, 3 rods, and 7 units. Using what we know, we have 1 whole, 3 tenths, and 7 hundredths. So, this is 1 + 0.3+ 0.07. This equals 1.37.

b) 1 flat, 37 units. This is 1 whole, and 37 hundredths. When there are two digits that you want to put in the hundredths place, put the digit furthest to the right in the hundredths place (excluding decimals) and place the rest of the number to the left accordingly. So for us, 37 hundredths would be .37, not .037. Add up 1 and .37, and we have 1.37.

c) 13 rods, 7 units. This is like the last problem. We have two digits wanted to go in the tenths place, but that isn't possible. So, we take the digit all the way to the right and put it in the tenths place (3). Now, we take out remaining digits (1), and put it in the next space to the left. Our rods= 1.3. Now for our units. We have 7, so that equals 0.07. Add it together, and now we have 1.37.

All of the problems equal 1.37. This shows how many ways a number can be represented.

Hope this helped! If it's still confusing, feel free to comment. have a nice day!

4 0
2 years ago
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