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icang [17]
3 years ago
11

Two numbers are in a ratio of 3:6 their sum is 63 find the bigger number

Mathematics
1 answer:
Andrews [41]3 years ago
7 0
The no. Are
3 = 21
6= 42
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HURRYYYY!!!!<br> which relation is a function
OLga [1]

Answer: C

Step-by-step explanation: Because it passes the vertical line test

3 0
3 years ago
What’s the units digit of 2 to the 2017 power times 7 to the 2017
OverLord2011 [107]

Answer: I think the answer is Infinity.

Step-by-step explanation:

8 0
3 years ago
11) k(n) = n² + 3n; Find k(3n)
Natali [406]

Answer:

k(3n) = 9n² + 9n

General Formulas and Concepts:

Order of Operations: BPEMDAS

  • Substitution and evaluation

Step-by-step explanation:

<u>Step 1: Define</u>

k(n) = n² + 3n

k(3n) is n = 3n

<u>Step 2: Solve</u>

  1. Substitute:                        k(3n) = (3n)² + 3(3n)
  2. Exponents:                       k(3n) = 9n² + 3(3n)
  3. Multiply:                            k(3n) = 9n² + 9n
3 0
3 years ago
A random sample of 28 items is drawn from a population whose standard deviation is unknown. The sample mean is x=900 and the sam
tatiyna

Answer:

<em>795.596≤u≤804.403</em>

Step-by-step explanation:

Confidence interval is expressed using the formula;

CI = xbar ± (z*s/√n)

xbar is the sample mean

z is the z score at 98% confidence

s is the standard deviation

n is the sample size

Given

xbar = 800

z = 2.33

s = 10

n = 28

Substitute into the formula;

CI =800 ± (2.33*10/√28)

CI = 800 ± (2.33*10/5.2915)

Ci = 800± (2.33* 1.8898)

CI = 800 ± 4.4033

CI = (800-4.4033, 800 + 4.4033)

CI = (795.596, 804.403)

<em>Hence an interval estimate of u with 98% confidence is expressed as </em>

<em>795.596≤u≤804.403</em>

7 0
3 years ago
Two times x is 8 more than y. The sum of x and two times y is 14. Write two equations and graph to find the value of y.
Sauron [17]

Option B: $y=4$ is the value of y

Explanation:

It is given that "Two times x is 8 more than y". Writing it as expression, we have,

2x=8+y

It is also given that "The sum of x and two times y is 14". Writing it as expression, we have,

x+2y=14

To find the value of y, let us solve the two equations using substitution method.

From the equation 2x=8+y , let us find the value of x.

x=\frac{8+y}{2}

x=\frac{8}{2} +\frac{y}{2}

x=4+\frac{y}{2}

Now, substituting x=4+\frac{y}{2} in the equation x+2y=14 , we get,

4+\frac{y}{2}+2y=14

      4+\frac{5y}{2} =14

            $\frac{5 y}{2}=10$

            5y=20

              $y=4$

Thus, the value of y is $y=4$

8 0
3 years ago
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