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3 years ago

Please I'm so stuck :( I'm entirely thankful

Mathematics

2 answers:

velikii [3]3 years ago

8 0

Using the lines that you have both read and white values:

Divide the red by the white:

16 / 10 = 1.6

40 / 25 = 1.6

The scale factor is 1.6.

So you have 1.6 L red paint / L white paint

Now multiply the amount of white paint by 1.6 to find the amount of red paint:

4 x 1.6 = 6.4

13 x 1.6 = 20.8

20 x 1.6 = 32

Evgen [1.6K]3 years ago

4 0

Divide the lines given to u

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A shopkeeper bought 50 kg of sugar and sold 1/4th of the sugar. find the mass of sugar that was left

soldi70 [24.7K]

Answer:

12.5 kg

Step-by-step explanation:

50 divided by 4 = 12.5

6 0

3 years ago

Read 2 more answers

Write an equation of the line with slope 2/3 that goes through the point -2,5

irinina [24]

Answer:

y = 2/3x + 19/3

Step-by-step explanation:

First, this is your current equation: y = 2/3x + b. Plug in your point to the equation, it should look like this: 5 = 2/3(-2) + b. 2/3 times -2 equals -4/3. So, this is what your equation should look like: 5 = -4/3 + b. Add 4/3 to both sides of the equation to get 19/3 = b. Go back to your original equation and plug 19/3 to b. This is your final equation: y = 2/3x + 19/3. Hope this helped!

7 0

3 years ago

A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained p

Oliga [24]

Answer:

no of sample within two percentage points is 5409

no of sample not use prior estimates is 8321

Step-by-step explanation:

Given data

E = 2% = 0.02

male m = 21.2 % = 0.212

female f = 19.7 % = 0.197

to find out

no of sample within two percentage points and if does not use any prior estimates

solution

first we calculate no of sample within two percentage points

we know Z critical value for 99% is 2.58

so no of sample will be

n = (Z / E )² × m(1-m) + f ( 1-f )

put all the value we get no of sample

n = (2.58 / 0.02 )² × 0.212 ( 1 - 0.212 ) + 0.197 ( 1 - 0.197 )

n = 16641 ×0.3250

no of sample within two percentage points is 5409

in 2nd part no of sample not use prior estimates

here than f and m will be 0.5

than

n = (Z / E )² × m(1-m) + f ( 1-f )

put all value

n = (2.58 / 0.02 )² × 0.5 ( 1 - 0.5 ) + 0.5 ( 1 - 0.5 )

n = 16641 × 0.5

no of sample not use prior estimates is 8321

7 0

3 years ago

What is the slope of y-4=5/2(x-2)

OLEGan [10]

The answer is 5/2. The equation is already in point slope form. If you recall, the equation for point slope form is y-y1 = m(x-x1) where y1 and x1 are points on the graph, and m is the slope. In the given equation, m is 5/2 so we know it is the slope.
Alternatively, if you are not familiar with the point slope for equation, you can manipulate the equation to the form of y=mx+b where m is the slope and b is the constant. If you solve for y, you get y=5/2x-1 since 5/2 is in the place of m, we know 5/2 is the slope.

6 0

3 years ago

please help me answer these 3 questions correctly . u will get 30 pints if you do and the brainlest. please do not answer if you

Marianna [84]

Answer:

6a) B

6b) C

6c) A

7 0

3 years ago