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Vadim26 [7]
3 years ago
7

X + 16 = 25 What is the value of x?

Mathematics
1 answer:
Paraphin [41]3 years ago
5 0

Answer:

x = 9

Step-by-step explanation:

Isolate x first by moving 16 to the other side

x = 25 - 16

x = 9

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Noah had 3 boxes of marbles. Each box has 34 marbles. Noah gave Michelle 9 marbles from each box. How many marbles does Noah hav
Thepotemich [5.8K]
Noah has 75 marbles. Noah has more marbles. this is because 34 times 3 is equal to 102. since michelle takes 9 marbles from EACH box, 9 times 3 is 27. 102 minus 27 is 75

3 0
3 years ago
Can someone help me please
NNADVOKAT [17]
2x + 4 = 3x - 10

-2x and +10 to both sides

14 = x

the answer is x = 14







5 0
3 years ago
Sarah is doing research on the average age of first-year resident physicians. She wants her estimate to be accurate to within 1
WINSTONCH [101]

Answer: The number of first-year residents she must survey to be 95% confident= 263

Step-by-step explanation:

When population standard deviation (\sigma)  is known and margin of error(E) is given, then the minimum sample size (n) is given by :-

n=(\dfrac{z^*\sigma}{E})^2, z* = Two-tailed critical value for the given confidence interval.

For 95% confidence level , z* = 1.96

As, \sigma = 8.265, E = 1

So, n= (\dfrac{1.96\times8.265}{1})^2 =(16.1994)^2\\\\= 262.42056036\approx263\ \ \ [\text{Rounded to the next integer}]

Hence, the number of first-year residents she must survey to be 95% confident= 263

7 0
3 years ago
A local gym charges a $100 initial membership fee and $19 for each month you stay a member. What are the x and y intercepts?
guapka [62]

Answer:

  • y-intercept = 100
  • x- intercept = -5.26

Step-by-step explanation:

  • $100 initial membership fee
  • $19  monthly fee

<u>Function of relationship:</u>

  • y = 19x + 100

<u>y- intercept:</u>

  • x =0 ⇒ y = 19*0 + 100 ⇒ y = 100

<u>x - intercept:</u>

  • y = 0 ⇒ 0 = 19x + 100 ⇒ 19x = -100 ⇒ x = -100/19 ⇒ x = -5.26
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3 years ago
use the elimination method to solve the system of equations choose the correct ordered pair -x + y = -2 2x - 3y = 4
mafiozo [28]

Answer:

The answer is (2, 0).

I hope this helps!

8 0
3 years ago
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