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
Marrrta [24]
3 years ago
8

Juan has 18 fish that he needs to put into tanks. each tank can hold 3 fish. his father gave him 2 fish tanks, and his mother ga

ve him 3. write an equation with a variable and figure out how many more fish tanks he needs
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
5 0

Answer:

He needs 1 more fish tank.

Step-by-step explanation:

18 / 3 = X    (X equals the number of fish tanks he needs)

2 + 3 = 5 fish tanks

5 x 3 = 15 fish

18 -15 = 3

Since 5 fish tanks can hold 15 fish he will need 6 fish tanks to hold his 18 fish.  He will need 1 more fish tank.


You might be interested in
Lolll I need help again! URGENT!!!!
Mars2501 [29]

Every time you get 6 times out of 8 you times it like 12 16,18 24

8 0
3 years ago
News article reports that "Americans have differing views on two potentially inconvenient and invasive practices that airports c
OverLord2011 [107]

Answer:

1) p1=0.83

2) p2=0.81

3) Option B

4) p=0.82

5) s=0.03

6) z=0.67

7) P=0.50

8) Do not reject H0

Step-by-step explanation:

1) The proportion of Republicans who think the full-body scans should be applied in airports is equal to the ratio between the republicans that think it should over the total Republicans in the poll:

p=X/n=258/311=0.83

2) The proportion of Democrats who think the full-body scans should be applied in airports is equal to:

p=X/n=294/363=0.81

3) As we want to know if there is a difference in the proportions calculated, not if one is higher or lower than the other, the correct option is B:

H_0:p_1-p_2=0\\\\H_a:p_1-p_2\neq0

4) The pooled estimate of a proportion is the average of both proportions:

\bar{p}=\frac{p_1+p_2}{2}= \frac{0.83+0.81}{2}=0.82

5) The standard error can be calculated as:

s=\sqrt{\frac{\bar{p}(1-\bar{p})}{n_1} +\frac{\bar{p}(1-\bar{p})}{n_2}} \\\\s=\sqrt{\frac{0.82*0.18}{311} +\frac{0.82*0.18}{363}} \\\\s=\sqrt{0.00047+0.00041} =\sqrt{0.00088}=0.03

6) The z-statistic can be calculated as:

z=\frac{p_1-p_2}{s}=\frac{0.83-0.81}{0.03}=\frac{0.02}{0.03}=0.67

7) The P-value for z=0.67 is P=0.50 (from the standard normal distribution table).

2P(Z>|z|)=0.50286

8) If the significance level is 0.01, the P-value is bigger than the significance level. The effect is not significanct. The null hypothesis is not rejected.

There is not enough evidence to say that both proportions are different.

A. Do not reject H0

8 0
3 years ago
How do you work out the radius of a circle from its area ?
goblinko [34]

Answer:

u divide the area by 3.14

Step-by-step explanation:

it reverses the area

3 0
3 years ago
Read 2 more answers
I need help with identifying parallel and perpendicular lines from equations.
Semenov [28]
For the first one, lines one and two are perpendicular because they have opposite slopes. Parallel lines share the same slope
8 0
3 years ago
How are the triangles congruent ?<br><br> ASA , SSA , AAS , SAS , or Not enough information
nlexa [21]

Answer:

AAS

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Kevin is a runner training for a marathon. At the end of each week, he calculates the total number of miles he ran that week. Ke
    12·1 answer
  • (9x - 3) - (2x2 + 3x + 7)
    15·1 answer
  • A container holds 5L of fluid. Does it hold more than or less than 500mL of fluid
    15·1 answer
  • In a circle graph, 36% represents what angle?
    7·1 answer
  • What is the simplest form of <br> 3/4 divided by 7/10
    5·1 answer
  • What is 525/1000 in simplest form?
    11·1 answer
  • PLEASE HELP PLEASe!!!!
    11·2 answers
  • A line passes through the points (-6, -3)and (6,-3) which of the following points is also on the line
    5·1 answer
  • Find the missing dimension Use the scale 1:5<br><br> Model: 3ft<br> Actual: ?
    10·1 answer
  • Which number line represents the solution set for the inequality 2x - 62 6(x-2) + 8?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!