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3 years ago

50 PTS Please Make sure its easy to understand

Mathematics

2 answers:

Komok [63]3 years ago

4 0

Answer:

1. -95

2. 15

3. 5th Floor (-4 + 9)

Step-by-step explanation:

kkurt [141]3 years ago

3 0

Answer:

1) -95.

2) 15.

3) The conference center is on floor 5.

Step-by-step explanation:

1) Evaluating gives $-52-30-13=-(52+30+13)=-(95)=-95.$

2) Substituting gives $x+27=(-12)+27=15.$

3) After going 4 floors down, we are on level -4. After going 9 floors up to the desired room, we are on level -4+9=5. So the conference center is on floor 5.

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klio [65]

Answer:

The probability that a student taking only math will get picked is approximately 29%

Step-by-step explanation: This is because out of the total number of students taking math (95), 52 of such students are also taking science. In order to get the number of students only taking math you have to do 95-52=43 and to put that against the amount of total students the ratio would be 43:147 or 42/147 and if you plug 42/147 into a calculator you will recieve a long decimal that you can then round to 29%.

6 0

2 years ago

1. Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into

Ludmilka [50]

Answer:

5, assuming you get the worst possible slips off: 0,1,2,3,4

Step-by-step explanation:

5 0

3 years ago

PLS HELP!! A student randomly guesses the answers to two true-false questions. Describe and correct the error in finding the pro

Nitella [24]

Answer:

The student was wrong. The probability is actually 1/4.

Step-by-step explanation:

Let's say you have question A and question B. You could have incorrect on A, and incorrect on B. Or, you could have incorrect on A, but a correct on B. Or, you could have an incorrect on B, but a correct on A. Or, both could be correct. <em><u>Since there are 4 different possibilities, the actual probability is 1/4.</u></em>

6 0

3 years ago

Use the method of Gauss-Jordan elimination (trails—forming (lie augmented matrix into reduced echelon form) to solveProblem in S

Nezavi [6.7K]

Answer:

Step-by-step explanation:

Answer is in below attachment

7 0

3 years ago

Solve for xxx. Enter the solutions from least to greatest. x^2 +7=43x 2 +7=43x, squared, plus, 7, equals, 43 \text{lesser }x =le

vaieri [72.5K]

Answer:

Step-by-step explanation:

x²+7=43x

x²-43x+7=0

$x=\frac{43 \pm \sqrt{(43)^2-4(1)(7)} }{2(1)} \\=\frac{43 \pm \sqrt{1849-28} }{2} \\=\frac{43 \pm \sqrt{1821} }{2} \\\approx \frac{43 \pm 42.673}{2}\\\approx 0.1635,42.8365$

4 0

3 years ago