a bird takes off from a tree that is 18 ft high he rises 2ft per minute what equation works for this

My questions are in the picture please help

Marrrta [24]

21.

So to solve for the value of a variable in an equation, you would need to isolate x on one side. The first thing you have to do is multiply 2 and (x + 7) together, which can be rewritten as 2(x) + 2(7). After multiplying, your equation would be: $2x+14+3x=12$ , or A.

22.

So the rule with multiplying exponents with the same base is to add the exponents together, and the rule with dividing exponents with the same base is to subtract the exponents. Your equation will be simplified as such:

$4^{(3+4)-9}\\ 4^{7-9}\\ 4^{-2}$

Now the rule with converting negative exponents into fractions is $x^{-m}=\frac{1}{x^m}$ . In this case, 4^-2 would turn into $\frac{1}{4^2}$ , or C, which is your final answer.

6 0

3 years ago

8x^3-6x^2+13x-4 Please simplify this expression and tell me how u simplified it.

jeka94

This expression is already simplified.

5 0

3 years ago

Find another common multiple of 30 and 42.

Karo-lina-s [1.5K]

Your answer would be 210.

8 0

3 years ago

Read 2 more answers

If 6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in how many minutes

Marianna [84]

Answer:

It'll take 144 minutes for 5 pipes.

Step-by-step explanation:

${ \sf{6 \: pipes = 120 \: mins}} \\ { \sf{5 \: pipes = ( \frac{6}{5} \times 120) \: mins}} \\ \\ = { \sf{144 \: mins}}$

but practically, it seems to be abnormal. if 6 pipes take 120 mins, 5 pipes must takes a time greater than 120 mins cause amount of water flowing to the tank is decreasing.

But there is a possibility that pressure of water was increased for the case of five pipes, that's why it takes a time less than 120 mins. (t < 120)

5 0

3 years ago

Read 2 more answers

bob and Cheryl are taking a road trip that is 189.80 miles. Bob drove 3/4 of the total distance.How many miles did Bob drive?

Tom [10]

142.35 miles. Just multiply 189.80 by 3/4 (or .75).

5 0

3 years ago

a bird takes off from a tree that is 18 ft high he rises 2ft per minute what equation works for this ​

a bird takes off from a tree that is 18 ft high he rises 2ft per minute what equation works for this