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sergij07 [2.7K]
4 years ago
6

The johnson family spends $675 a month on rent. If their monthly income is $2,700, what percent of their income goes to rent?

Mathematics
1 answer:
AURORKA [14]4 years ago
4 0
2700 - 675 = 2025 divided 100 = 20.25 or 20.3
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LeAnn is playing a math game. She chooses three cards. The value of each of her cards is shown.
professor190 [17]

Answer:

-14

Step-by-step explanation:

The sum (addition) of the three numbers would be -14 because -12+-5 is -17. Then, -17+3 would be -14.

6 0
3 years ago
Solve the system of equations by the substitution method.<br> y=5x+6<br> y=9x+7
alukav5142 [94]

Answer:

When finding the value of x let y be 0 and when finding value of y let x be 0 and get your answers.

8 0
3 years ago
A certain culture of year increases by 50% every three hours. A scientist places 9 grams of yeast in a culture dish. Write the e
miskamm [114]

Answer: a) Explicit formula :f(x)=9(1.5)^{3x}

b) Recursive formula : f(x)=9(1.5)^{3x} and f(x+1)=f(x)\times 1.5^3

Step-by-step explanation:

Since we have given that

Number of grams of yeast in a culture dish initially = 9 grams

According to question, a certain culture of year increases by 50 % every three hours.

So, the explicit formula will be

f(x)=9(1+\frac{50}{100})^{3x}\\\\f(x)=9(1+0.5)^{3x}\\\\f(x)=9(1.5)^{3x}

And the recursive formula will be

f(x)=9(1.5)^{3x}\\\\f(x+1)=9(1.5)^{3(x+1)}\\\\f(x+1)=9(1.5)^{3x+3}\\\\f(x+1)=9(1.5)^{3x}.(1.5)^3\\\\f(x+1)=f(x)\times 1.5^3

Hence, a) Explicit formula : f(x)=9(1.5)^{3x}

b) Recursive formula :f(x)=9(1.5)^{3x} and  f(x+1)=f(x)\times 1.5^3

6 0
3 years ago
Can someone help me with the below question???
8_murik_8 [283]

Answer:

so 2a+3b=±13

Step-by-step explanation:

4a²+9b²=97

ab=6

2a+3b=?

by using formula

(a+b)²=a²+b²+2ab

(2a+3b)²=(2a)²+(3b)²+2(2a)(3b)

(2a+3b)²=4a²+9b²+12ab

putting values

(2a+3b)²=97+12(6)

(2a+3b)²=97+72

(2a+3b)²=169

taking square root on both sides

√(2a+3b)²=√169

2a+3b=±13

i hope it will help you

5 0
3 years ago
Read 2 more answers
5+4=9 is what property law<br>​
mariarad [96]
It is the commutative property since you can switch 5 and 4 around but still get the same answer (9).
6 0
3 years ago
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