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
RSB [31]
3 years ago
9

Help me please I can’t figure it out

Mathematics
2 answers:
Kay [80]3 years ago
8 0

Answer:

2 is the missing length

Step-by-step explanation:

3 + x+ 3 =8

6+x =8

x= 8-6

x=2

Wittaler [7]3 years ago
6 0

Answer:

2 m

Step-by-step explanation:

The bottom length of the bottom cuboid is equal to the top length of the bottom cuboid.

8 = 3 + c + 3

8 = c + 6

8 - 6 = c

2 = c

You might be interested in
Rx+9/5=h, Solve for the value of x
muminat

rx+(9/5)=h 

rx=h-(9/5) 

x=(h-(9/5))/r

5 0
3 years ago
5. Высота ромба равна 12 дм, что составляет 60% основания. Вычи-<br> сли площадь ромба
Alexandra [31]

Answer:

yes

Step-by-step explanation:

8 0
3 years ago
Drag the fraction to the boxes and below to complete the subtraction sentence
Scilla [17]

Answer:

first box is 4/5 and the second box (=) is 7/15

4 0
3 years ago
In a study of cereal leaf beetle damage to oats, researchers measured the number of beetle larvae per stem in small plots of oat
PSYCHO15rus [73]

Answer:

At 0.05 level of significance, there is no difference in the mean number of larvae per stem. This supports the scientist's claim.

(d) H0: MeanMalathion - MeanNoMalathion equals 0

H1: MeanMalathion - MeanNoMalathion not equals 0

Step-by-step explanation:

Test statistic (t) = (mean 1 - mean 2) ÷ sqrt[pooled variance (1/n1 + 1/n2)]

Let the difference between the two means be x and the pooled variance be y

n1 = 5, n2 = 12

t = x ÷ sqrt[y(1/5 + 1/12)] = x ÷ sqrt(0.283y) = x ÷ 0.532√y = 1.88x/√y

Assuming the ratio of x to √y is 0.5

t = 1.88×0.5 = 0.94

n1 + n2 = 5 + 12 = 17

degree of freedom = n1 + n2 - 2 = 17 - 2 = 15

significance level = 0.05 = 5%

critical value corresponding to 15 degrees of freedom and 5% confidence interval is 2.131

The test is a two-tailed test because the alternate hypothesis is expressed using not equal to.

The region of no rejection of the null hypothesis lies between -2.131 and 2.131

Conclusion

Fail to reject the null hypothesis because the test statistic 0.94 falls within the region bounded by the critical values.

The scientist's claim is right.

A null hypothesis is a statement from a population parameter which is either rejected or accepted (fail to reject) upon testing. It is expressed using the equality sign.

An alternate hypothesis is also a statement from a population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.

3 0
3 years ago
A recent survey found that 7575​% of all adults over 50 wear glasses for driving. In a random sample of 4040 adults over​ 50, wh
malfutka [58]

Answer:

Mean = 30

standard Deviation = 2.74

Step-by-step explanation:

Formula

mean = np

Standard Deviation = \sqrt{npq}

from the question = 40

P = 75% or 0.75

q = 1 - p = 1 - 75% or 1 - 0.75

To find mean

mean = 40 x 0.75

           = 30

For Standard Deviation (SD)

Standard Deviation = \sqrt{npq}

       = \sqrt{40 X 0.75 X 0.25

      = \sqrt{7.5}

:. Standard  Deviation       = 2.74

5 0
3 years ago
Other questions:
  • Grandma Gertrude gave 13 pieces of jewelry and grandma Fien gave y pieces of jewelry to the Carlson sisters to divide evenly amo
    5·1 answer
  • During summer vacation, Courtney’s family drove through seven different states.
    8·1 answer
  • Suzie just became a personal trainer and is finalizing her pricing plans. One plan is to charge $59 for the initial consultation
    8·1 answer
  • If the range of the function f(x)=x/4 is {28, 30, 32, 34, 36}, what is its domain?
    14·1 answer
  • What is 1/9 that is a fraction but what is 3 divided by 1/9​
    10·1 answer
  • electric eel has a length of 1.84 meters what fraction is equivalent to the length of the electric eel in meters
    6·2 answers
  • PLEASEEEEEE HELPPPPPPP PLEASEEEEE IM BEGGING SOMEONE PLEASEEEE HELPPPPPPPPPP PLEASEEEE
    9·1 answer
  • This is for math, we need to create a chart on something, what's your favorite color?
    7·2 answers
  • Find the cosine of ∠J.
    7·1 answer
  • The sales tax rate is 5%. If Abdul buys a wheelbarrow priced at $79, how much tax will he<br> pay?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!