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Charra [1.4K]
3 years ago
15

Which of the following statements is the only sentence that is error-free?

Mathematics
1 answer:
Ray Of Light [21]3 years ago
5 0
I don’t really know what the answer is
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=<br> = 70<br> 7<br> 7² 78<br> 74<br> a =<br> a<br> 79<br> 74<br> b=
weqwewe [10]
I need points so imma answer
7 0
3 years ago
What are the solutions of the quadratic equation (x + 3)(x +3) = 49? Ax = -2 and x = -16 Bx = 2 and x = -10 Cx = 4 and x = -10 D
Ivahew [28]

Answer:

4 and -10

Step-by-step explanation:

\displaystyle (x + 3)(x +3) = 49 \\ x^2+3x+3x+9=49 \\ x^2 +6x+9=49 \\ x^2 + 6x + 9 - 49 = 0 \\x^2+6x-40=0 \\\\ \Delta=b^2-4ac \\ \Delta=6^2-4 \cdot 1 \cdot (-40) \\ \Delta=36+160 \\ \Delta=196 \\ \\ X_{1,2}=\frac{-b \pm \sqrt{\Delta} }{2a}  \\ \\ X_1=\frac{-b+\sqrt{\Delta} }{2a} = \frac{-6+14}{2} = \frac{8}{2}=4 \\ \\ X_2=\frac{-b-\sqrt{\Delta} }{2a}  = \frac{-6-14}{2}=\frac{-20}{2} = -10

4 0
3 years ago
In a certain Algebra 2 class of 30 students, 18 of them play basketball and 9 of them
marshall27 [118]

Probability that a student will play both is 7/30

Step-by-step explanation:

Total students = 30

No. of students who play basketball = 18

Probability that a student will play basketball = 18/30

= 3/5

No. of students who play baseball = 9

Probability that a student will play baseball = 9/30

= 3/10

No. of students who play neither sport = 10

Probability that a student will play neither sport = 10/30

= 1/3

To find :

Probability that a student will play both = p(student will play both)

No.of students who play sport = 30 - 10

= 20

Out of 20 students 18 play basketball and 9 play baseball.

So, some students play both the sports.

No. of students who play both sports = 18 + 9 - 20

= 7

p(student will play both) = 7/30

Probability that a student will play both is 7/30

3 0
4 years ago
Kari, katelynn, and Morgan went out for dinner and split the bill evenly. The total bill was $46.68. How much did each pay?
Murrr4er [49]

46.68 ÷3=15.56 each because it's being split by 3

5 0
4 years ago
Read 2 more answers
The glee club has $90 to spend on pens and pencils. Each pen costs $0.75 and each pencil costs $0.15. Let x represent the number
Deffense [45]

Answer:

part a: answer b. 0.75x + 0.15y = 90

8 0
3 years ago
Read 2 more answers
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