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ratelena [41]
3 years ago
7

HELP!!! use cross multiplication

Mathematics
2 answers:
Tresset [83]3 years ago
6 0
Let x be the number of square feet to be mowed
215 square feet take 22 minutes
x square feet take 12 minutes

22x = 12 \times 215 \\ x = (12 \times 215)  \div 22
Georgia [21]3 years ago
6 0
29 square feet long I think
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naomi needs 2 cups of chopped apples for a fruit salad she is making .she only has a 1/4 cup. how many times will naomi need to
Lilit [14]
1/4 × 8 times = 2 cups
ANSWER : 8 times
5 0
3 years ago
Read 2 more answers
Negative six times a number, increased by 17, is – 19.<br> Write an equation
Zolol [24]

Answer:

( - 6 \times x) + 17 =  - 19

3 0
3 years ago
a. Show that the system of rational expressions is closed under addition, or give an example showing the contrary.
otez555 [7]
A "rational expression" is a fraction in which the numerator and the denominator are both polynomials. The sum of two such expressions will always produce another such expression, viz., 
<span>p(x)/q(x) + r(x)/s(x) = [p(x)s(x) + q(x)r(x)] / [q(x)*s(x)]. </span>
<span>The numerator and denominator of the sum will both be polynomials when fully expanded</span>
7 0
3 years ago
ANSWER ASAPPP PLSSS. ILL MARK BRAINLIEST TOO
nevsk [136]

Answer:

Step-by-step explanation:

11.04 = 10(1.02)^n

1.104 = 1.02^n

ln 1.104 = ln 1.02^n

ln 1.104 = n ln 1.02

n = ln 1.104/ ln 1.02

n = 4.99630409516

4.99 can be rounded to 5.

So a reasonable domain would be 0 ≤ x < 5

PART B)

f(0) = 10(1.02)^0

f(0) = 10(1)

f(0) = 10

The y-intercept represents the height of the plant when they began the experiment.

f(1) = 10(1.02)^1

f(1) = 10(1.02)

f(1) = 10.2

(1, 10.2)

f(5) = 10(1.02)^5

f(5) = 10(1.1040808)

f(5) = 11.040808

f(1)=10(1.02)^1

f(1)=10.2

Average rate= (fn2-fn1)/(n2-n1)

                     =11.04-10.2/(5-1)

                    =0.22

the average rate of change of the function f(n) from n = 1 to n = 5 is 0.22.  

3 0
3 years ago
Read 2 more answers
The solution is (7,7)
Georgia [21]
B is the answer I chose but there are the steps so you can see how to solve it

8 0
2 years ago
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