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Usimov [2.4K]
3 years ago
10

99 PLZ HELP BRAINLIEST Which strategy would not correctly solve this story problem?

Mathematics
1 answer:
Verdich [7]3 years ago
4 0

Answer:

is this all apart of the answers or separate questions??

Step-by-step explanation:

1. B

2.C

3.C

4.A

5.D

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Jesse bought 10 more pencils than erasers. A pencil costs $0.15 and an eraser costs $0.22. He paid a total of $4.46. How many er
VARVARA [1.3K]

“Jesse bought 10 more pencils than erasers”       means    P = 10 + E

 “A pencil costs $0.15”   means that     $0.15*P was spent on pencils

 “an eraser costs $.22”    means that    $0.22*E was spent on erasers

 “He paid a total of $4.46”    means that   $0.15*P + $0.22*E = $4.46

15*(10+E)   +   22*E    =   446

                       150 + 37E = 446

                          37E = 296

                              E = 8   Jesse bought 8 erasers

8 0
3 years ago
Evaluate the function. f(x) = 3x² – x Find f(10)​
kirill [66]

Answer:

<em>f(10)=290</em>

Step-by-step explanation:

<u>Function Evaluation</u>

Given a function f(x) as an explicit expression, finding f(x=a) implies substituting the value of x by a in every instance it occurs.

We are given the function:

f(x)=3x^2-x

It's required to find f(10). We replace the x for 10:

f(10)=3*10^2-10

Operating:

f(10)=3*100-10

f(10)=300-10

f(10)=290

Thus, f(10)=290

4 0
3 years ago
Simplify <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B6%5D%7B5%7D%20%20%5Ctimes%20%20%5Csqrt%5B2%5D%7B5%7D%20%20%3D%20" id
jek_recluse [69]

Step-by-step explanation:

\sqrt[6]{5}  \times  \sqrt[2]{5}

=  {5}^{  \frac{1}{6}  }  \times  {5}^{ \frac{1}{2} }

=  {5}^{ \frac{1}{6} +  \frac{1}{2}  }

=  {5}^{ \frac{1 + 3}{6} }

=  {5}^{ \frac{4}{6} }

=  {5}^{ \frac{2}{3} }

=  \sqrt[3]{ {5}^{2} } (ans)

5 0
3 years ago
PLEASE HELP ME WITH THIS!!! 25 POINTS ALSO PLEASE TRY TO ANSWER A AND B
professor190 [17]

Step-by-step explanation:

____________________

5 0
3 years ago
There are 30 balls numbered 1-30 in a bag. One is randomly selected 12 times. What is the probability of getting a prime number
Sliva [168]

Answer: The probability of getting a prime number exactly five times = 0.1908

Step-by-step explanation:

Prime numbers from 1 to 30 are 2,3,5,7,11, 13, 17, 19, 23, 29.

The probability of getting a prime number p= \dfrac{10}{30}=\dfrac13

Number of trials n = 12

Binomial probability formula:

P(X=x) = \ ^nC_x p^x(1-p)^{n-x}

, where x= number of successes

n= number of trials.

x = Number of successes

p= probability of getting one success.

The probability of getting a prime number exactly five times:

P(X=5)=\ ^{12}C_5(\frac13)^5(1-\frac13)^{7}

=\frac{12!}{5!7!}(\frac1{243})(\frac{128}{2187})\\\\=0.1908

Hence, the probability of getting a prime number exactly five times = 0.1908

4 0
3 years ago
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