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Tema [17]
3 years ago
10

Can someone help me please​

Mathematics
2 answers:
kondor19780726 [428]3 years ago
4 0

Answer:

15x + 9 (We combing like terms. Ex. 16x and -x)

Masja [62]3 years ago
3 0

Answer:

15x+9

Step-by-step explanation:

16x+7+2-x

16x-x+7+2

15x+9

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A large university accepts 70% of the students who apply. Of the students the university accepts, 30% actually enroll. If 30,000
Irina-Kira [14]

Answer:

630

Step-by-step explanation:

you need to do a 2 step equation, first finding the amount of students that get accepted, and then use the info you just got solving how many people actually enroll.

formula:

part part %

---------- = -----------

total total %

5 0
3 years ago
You ask four people to the prom. If X is the number of "yes" responses, what is E(X)? Assume equal probability for
VladimirAG [237]

Answer:

e is the amount of people

Step-by-step explanation:

4 x so let’s say you have two x you have 50% of the people that said yes.

6 0
2 years ago
Johnny has graded 20% of his 150 students papers how many papers does he still need to finish grading ?
LiRa [457]
The correct answer is 120 papers.
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3 years ago
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If you make $17.50 an hour and get a 9% raise. What is your new hourly pay
Stella [2.4K]

Answer:

your hourly pay is $19.07

Step-by-step explanation:

9% of 17.50 = 1.575

17.50 + 1.575 = 19.075

3 0
3 years ago
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1-sin^2x/sinx-cscx <br><br>How do I solve this problem? I keep getting the wrong answer.
Annette [7]

Answer:

-sinx

Step-by-step explanation:

a trig identity that is crucial to solving this problem is: sin^2 + cos^2 = 1

with knowing that, you can manipulate that and turn it into 1 - sin^2x = cos^x

so 1-sin^2x/sinx - cscx becomes cos^2x/sinx - cscx

it is also important to know that cscx is the same thing as 1/sinx

knowing this information, cscx can be replaced with 1/sinx

(cos^2x)/(sinx - 1/sinx)

now sinx and 1/sinx do not have the same denominator, so we need to multiply top and bottom of sinx by sinx; it becomes....

cos^2x

---------------------

(sin^2x - 1)/sinx

notice how in the denominator it has sin^2x-1 which is equal to -cos^2x

so now it becomes:

cos^2x

--------------

-cos^2x/sinx

because we have a fraction over a fraction, we need to flip it

cos^2x          sinx

---------- * ----------------

1                  -  cos^2x

because the cos^2x can cancel out, it becomes 1

now the answer is -sinx

3 0
3 years ago
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