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rusak2 [61]
3 years ago
7

Solve and in standard form please. you must add. this is from khan academy

Mathematics
2 answers:
Sindrei [870]3 years ago
8 0
We are asked to sum the two trinomials (-4f^3-5f+16)+(4f^2-f+9). We can start by using the distributive property to remove the parenthesis, giving us -4f^3-5f+16+4f^2-f+9. Next, when we combine like terms, we get \boxed{-4f^3+4f^2-6f+25}. Hope this helped!
Ganezh [65]3 years ago
4 0
Hey there,

I wont be able to do it step by step because I have to leave real soon, But I really want to help you because this does look very hard. I used a calculate because I'm being rushed. Your answer would be in the attachment I left. I hope that would be the correct answer. You have a good week-end "<span>Morganfredieu"
</span>
~Twizzie



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What is the sale price rounded to the nearest dollar?
valina [46]

Marked down 20% means it is selling for 80% of the original price ( 100% - 20% = 80%)

Multiply the original price by 80%

270 x 0.80 = $216.00

4 0
3 years ago
Move two choices to the blanks to correctly complete the sentences.
Pavel [41]

Answer:

(A) There should have been 5 outcomes of HT

(B) The experimental probability is greater than the theoretical probability of HT.

Step-by-step explanation:

Given

S = \{HH,HT,TH,TT\} -- Sample Space

n(S) = 4 --- Sample Size

Solving (a); theoretical outcome of HT in 20 tosses

First, calculate the theoretical probability of HT

P(HT) = \frac{n(HT)}{n(S)}

P(HT) = \frac{1}{4}

Multiply this by the number of tosses

P(HT) * n= \frac{1}{4} * 20

P(HT) * n= 5

<em></em>

Solving (b); experimental probability of HT

Here, we make use of the table

P(HT) = \frac{n(HT)}{n(S)}

P(HT) = \frac{6}{20}

P(HT) = 0.30 ---- Experimental Probability

In (a), the theoretical probability is:

P(HT) = \frac{1}{4}

P(HT) = 0.25 ---- Experimental Probability

By comparison;

0.30 > 0.25

6 0
3 years ago
Tony is mailing packages. Each small package costs him $2.80 to send. Each large package costs him $3.60. How much will it cost
Natasha_Volkova [10]

Answer:

The answer is $33.6

Step-by-step explanation:

Each small package costs him $2.80

3 small packages will cost him 3 x $2.80 = $8.4

 

Each large package costs him $3.60

7 large packages will cost 7 x $3.60 = $25.2

 

Cost to  send 3 small packages and 7 large packages = $8.4 + $25.2

= $33.6

6 0
3 years ago
(FIRST PERSON TO ANSWER GETS BRAINLIEST!!!) A student earned $2500.75 at his summer job making $12.50 per hour. Let h represent
laiz [17]

<u>Answer:</u>

12.50 \space\ h = 2500.75

<u>Step-by-step explanation:</u>

We know from the question that the student earned $12.50 <em>per hour</em>.

Using this information, we can say that if the student worked for <em>h </em>hours, they would make a total of 12.50 × <em>h </em>dollars.

We also know that the total money they earned is $2500.75.

∴ Therefore, we can set up the following equation:

\boxed {12.50 \times h = 2500.75}

From here, if we want to, we can find the number of hours worked by simply making <em>h</em> the subject of the equation and evaluating:

<em>h </em>=<em> </em>\frac{2500.75}{12.50}

  = 200.6 hours

5 0
2 years ago
Read 2 more answers
Which of the following is a composite number?<br> OA) 23<br> OB) 11<br> OC) 25<br> OD) 19
Flauer [41]

Answer:

its 25

Step-by-step explanation:

7 0
3 years ago
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