1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OverLord2011 [107]
3 years ago
12

What is the value of the expression 5ab - 2c, where a = 2, b = 3 and c=0?

Mathematics
1 answer:
Len [333]3 years ago
5 0

Answer:

30

Step-by-step explanation:

5*2*3-2*0 ( when we multiply any number with zero then the result is also zero)

30-0

30

You might be interested in
In a representative sample of 1000 adult Americans, only 400 could name at least one justice who is currently serving on the U.S
lys-0071 [83]

Answer:

1) z = -6.32

2) p-value = 0.001 × 10^(-2)

3) we will reject the null hypothesis and conclude that there is enough evidence to support the claim that fewer than half of adult Americans can name at least one justice currently serving on the Supreme Court

Step-by-step explanation:

We are told that In a representative sample of 1000 adult Americans, only 400 could name at least one justice.

Thus:

Sample proportion; p^ = 400/1000 = 0.4

Sample size: n = 1000

We want to find if there is convincing evidence to support the claim that fewer than half of adult Americans can name at least one justice.

Thus, the hypothesis is defined as;

Null hypothesis:H0: p ≥ 0.5

Alternative hypothesis: Ha < 0.5

Formula for the test statistic is;

z = (p^ - p)/√(p(1 - p)/n)

Plugging in the relevant values;

z = (0.4 - 0.5)/√(0.5(1 - 0.5)/1000)

z = -6.32

From online p-value from z-score calculator attached, using z = -6.32; significance level of 0.01; one tailed hypothesis;

We have:

p-value = 0.00001 = 0.001 × 10^(-2)

The p-value is less than the significance level and so we will reject the null hypothesis and conclude that there is enough evidence to support the claim that fewer than half of adult Americans can name at least one justice currently serving on the Supreme Court

8 0
2 years ago
1) what is 1/5 times 1/2 ?
Savatey [412]
1. 1/10
2. 3/5
3. 1/10
4. 1/6
5. 3/14
8 0
3 years ago
Use a double angle identity to rewrite the formula r(Θ)=<img src="https://tex.z-dn.net/?f=1%2F16v%5E2sin%28theta%29cos%28theta%2
Artist 52 [7]

Answer:

1/32v²sin2θ

Step-by-step explanation:

Given the expression r(theta) = 1/16v²sinθcosθ

According to double angle of trigonometry identity;

Sin2θ = sin(θ+θ)

Sin2θ = sinθcosθ + cosθsinθ

Sin2θ = 2sinθcosθ

sinθcosθ = sin2θ/2 ... **

Substituting equation ** into the question

1/16v²sinθcosθ = 1/16v²(sin2θ/2)

1/16v²sinθcosθ = 1/2×1/16v²(sin2θ)

1/16v²sinθcosθ = 1/32v²sin2θ

Hence using the double angle identity, the equivalent expression is 1/32v²sin2θ

7 0
3 years ago
A store sells new video games for $55 each. Used video games sell for $12 each. Paul is buying 3 new video games and x
harina [27]

answer:

y = 165+12x should be the answer

4 0
3 years ago
A square pyramid with a side length of 6 inches has volume of 102 cubic inches. Find the height of the square pyramid.
-BARSIC- [3]

Answer:

the height of a square pyramid is 139.3 cm

7 0
2 years ago
Other questions:
  • Show the region which satisfies simultaneously the inequalities 2x+3y≤8, x-2y≥-3, x≥0, y≥0
    14·1 answer
  • Elena mixes 5 cups of apple juice with 2 cups of sparkling water to make sparkling apple juice for a party she wants to make 35
    10·1 answer
  • Which transformation maps hexagon 1 into 3?
    15·1 answer
  • The sum of three consecutive odd integers 171
    5·1 answer
  • Rae earns $60 for playing music on Saturday nights at the local coffee house. She makes an average of $5.25 in tips per hour. Wr
    10·2 answers
  • Given that g(x)=x2 - 2x - 7. find (g 0 g)(-3)<br>(g 0 g)(-3) =<br>(Simplify your answer.)​
    8·1 answer
  • My goal was to raise $5,000 to help protect the manatees. She raised 3,500. What percent of her goal did she achieve
    11·1 answer
  • F(x) =
    15·1 answer
  • Let f(x) = 5x − 6. Simplify each of the following expressions.
    6·1 answer
  • Explain the answer....​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!