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irina1246 [14]
3 years ago
13

write an expression to model the following situation: when rafa woke up, the temperature was –9°c. by noon, the temperature had

increased by 7°c. what was the temperature at noon? a. –9 – 7 b. 9 7 c. –9 7 d. 9 – 7
Mathematics
1 answer:
Julli [10]3 years ago
7 0
The answer is -9+7 because it INCREASED which means adding ( + ).
You might be interested in
Solve for x. −ax + 4b > 9 plz help me
likoan [24]

Answer:

x < \frac{9-4b}{a}

Step-by-step explanation:

Given

- ax + 4b > 9 ( isolate the term in x by subtracting 4b from both sides )

- ax > 9 - 4b ( divide both sides by - a )

Remembering to reverse the inequality symbol when dividing by a negative quantity, thus

x < \frac{9-4b}{a}

7 0
3 years ago
Read 2 more answers
Simplify (7x+42)/(x^2+13x+42)
Colt1911 [192]
\frac{7x+42}{x^2+13x+42}=  \frac{7(x+6)}{x^2+7x+6x+42}=   \frac{7(x+6)}{x(x+7)+6(x+7)}=  \frac{7(x+6)}{(x+6)(x+7)}=  \frac{7}{x+7}
7 0
3 years ago
Read 2 more answers
Suppose the expression a(b)n models the approximate number of people who visited an aquarium each day since an aquarium opened,
Viefleur [7K]

Answer:

C. There were 6,27 times as many people who visited the aquarium on the seventh day as on the first day.

Explanation:

\displaystyle 1,3^7 = 6,2748517 ≈ 6,27

I am joyous to assist you anytime.

8 0
3 years ago
Solve the following equation for x 2x+22y=18
AlladinOne [14]

Answer:

x = -9 + 11y

Step-by-step explanation:

Simplifying

2x + -22y = -18

Solving

2x + -22y = -18

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '22y' to each side of the equation.

2x + -22y + 22y = -18 + 22y

Combine like terms: -22y + 22y = 0

2x + 0 = -18 + 22y

2x = -18 + 22y

Divide each side by '2'.

x = -9 + 11y

Simplifying

x = -9 + 11y

Hope this helps!!

7 0
3 years ago
If i=Square root of -1, what is the value of i^3?<br> A.-1<br> B.i<br> C.1<br> D.-i
madam [21]
 First we are going to reesribir the inaginario number:
 i = root (-1)
 i = (- 1) ^ (1/2)
 Then, we have to
 By properties of exponents:
 i ^ 3 = i ^ 2 * i
 Substituting the value of i:
 i ^ 3 = ((- 1) ^ (1/2)) ^ 2 * i
 Applying properties of exponents:
 i ^ 3 = ((- 1) ^ (1/2)) * ((- 1) ^ (1/2)) * i
 i ^ 3 = ((- 1) ^ ((1/2) + (1/2)) * i
 i ^ 3 = ((- 1) ^ ((2/2)) * i
 i ^ 3 = ((- 1) ^ (1) * i
 i ^ 3 = -1 * i
 i ^ 3 = - i
 Answer:
 D.-i

8 0
3 years ago
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