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Artyom0805 [142]
3 years ago
8

7. A recipe calls for 4 tbsp of sugar to 10 tbsp of baking powder. What is the

Mathematics
1 answer:
Reptile [31]3 years ago
6 0

Answer:

The correct answers are:

7) 2 to 5

8) the product of the means is equal to the product of the extremes (D)

Step-by-step explanation:

7) Number of tbsp of sugar = 4

Number of tbsp of baking powder = 10

∴ ratio of sugar to baking powder = 4 : 10

simplifying further by dividing through by 2

4 : 10 = 2 : 5

∴ ratio of sugar to baking powder = 2 to 5

8) A proportion is a statement that equates two rates or ratios.

For example:

\frac{a}{b} = \frac{c}{d}

In this equation, the first and the fourth terms (a and d) are called <em>extremes</em><em>, </em>while the second and third terms are called means.

Therefore, one rule of proportions is that the product of the extremes must equal the product of the means. This means that:

a × d (extremes) = b × c (means)

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Find the numerical value of the expression if x = 2.
marshall27 [118]

Step-by-step explanation:

6x-7

= 6×2-7

=12-7

=5

b) 3x

=3×2

=6

8 0
2 years ago
2 2/3 + 3 3/4<br> This Is Fraction
dangina [55]

Answer:

6 5/12

Step-by-step explanation:

2 2/3 as a mixed number is 8/3

3 3/4 as a mixed number is 15/4

To make the 2 fractions have a common denominator, they become:

32/12 and 45/12

to add them up it will be: 77/12 which can be written as 6 5/12

6 0
2 years ago
Read 2 more answers
If stratified random sampling with proportional allocation is used to select a sample of 25 high​ schools, how many would be sel
gregori [183]

Answer:

02 High Schools would be selected from the stratum with a​ percent-free-lunch value of 40 less than or equals x​.

Step-by-step explanation:

As the sample size needed is 25 and total schools are 100 so this indicate 1 school in each 4 schools is to be selected. This is given as

n=\frac{n_{total}}{n_{sample}}\\n=\frac{100}{25}\\n=4

Now as the schools with percent free lunch are 8 so now

n=\frac{n_{total}}{n_{sample}}\\n=\frac{8}{2}\\n=2

So only 2 schools will be selected in this regard.

7 0
3 years ago
PLEASE HELP!!!!!!!!!!!!1
skelet666 [1.2K]
A. Let x = cheese and
y = chocolate
2x + y = 25
x + y = 20

B. Subtract the second equation from the first.
2x + y = 25
-(x + y = 20)
-—————
x = 5

Plug 5 back in to the second equation and solve for y.
x + y = 20
5 + y = 20
Subtract 5 from both sides.
y = 15
5 cheese and 15 chocolate

Used elimination method because coefficients on the y values were both 1 so it was easy to subtract the equations and eliminate the y variable.


5 0
3 years ago
Factor x3-2x2-9x+18 completely if(x+3) is a factor
Charra [1.4K]

Factor x^3 -2x^2-9x+18

= x^2(x - 2) - 9(x - 2)

= (x^2 - 9)(x -2)

= (x + 3 )(x - 3)(x - 2)

So (x+3) is a factor


6 0
3 years ago
Read 2 more answers
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