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stepladder [879]

3 years ago

10

make sure you round, i've been having difficulties with this, it's been saying incorrect forever, help me with this and you're a

hero

1 answer:

amm18123 years ago

5 0

What are u talking about what is the question

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If x = 14, which equation is true?

lozanna [386]

Answer:

The answer should be C.

2(14 - 3) = 22

2(11) = 22

8 0

2 years ago

1. The sum of first n terms of an arithmetic sequence is 3n²+4n

valentina_108 [34]

Answer:

<h3> a. a₁=7, b. a_n=7n+1, c. a₂₀=141</h3>

Step-by-step explanation:

a.

$a_1=S_1=3\cdot1^2+4\cdot1=3+4=7$

b.

$a_1+a_2=S_2\\\\a_1+a_1+d=3\cdot2^2+4\cdot2\\\\7+7+d=3\cdot4+8\\\\14+d=12+8\\\\d=6\\\\\\a_n=a_1+d(n-1)\\\\a_n=7+6(n-1)\\\\a_n=7+6n-6\\\\\underline{a_n=7n+1}$

c.

$a_{20}=7\cdot20+1=141$

5 0

2 years ago

An airplane is traveling at an altitude of 30,000 feet

Murljashka [212]

Answer:

10 minutes

Step-by-step explanation:

First, find how much higher the airplane has to travel:

35,000 - 30,000

= 5,000

To fine how long it will take, divide 5000 by 500

5000/500

= 10

So, it will take 10 minutes to get above 35,000 feet

5 0

3 years ago

Suppose you have the following information. 12% of all drivers do not have a valid driver’s license, 6% of all drivers have no i

lubasha [3.4K]

Answer:

e) 0.14

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that a driver does not have a valid driver's license.

B is the probability that a driver does not have insurance.

We have that:

$A = a + (A \cap B)$

In which a is the probability that a driver does not have a valid driver's license but has insurance and $A \cap B$ is the probability that a driver does not have any of these things.

By the same logic, we have that:

$B = b + (A \cap B)$

We start finding these values from the intersection.

4% have neither

This means that $(A \cap B) = 0.04$

6% of all drivers have no insurance

This means that $B = 0.06$ . So

$B = b + (A \cap B)$

$0.06 = b + 0.04$

$b = 0.02$

12% of all drivers do not have a valid driver’s license

This means that $A = 0.12$

So

$A = a + (A \cap B)$

$0.12 = a + 0.04$

$a = 0.08$

The probability that a randomly selected driver either fails to have a valid license or fails to have insurance is about

$P = a + b + (A \cap B) = 0.08 + 0.02 + 0.04 = 0.14$

So the correct answer is:

e) 0.14

8 0

2 years ago

Please answer! giving branliest. provide me with answers, or answer sheet, thanks!

pshichka [43]

When you graph the three lines, the first two overlap. The third is parallel to those two.

6 0

3 years ago

Read 2 more answers