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
Ghella [55]
3 years ago
7

Please help me! i'll mark you brainliest 20 points, (maths)

Mathematics
1 answer:
marysya [2.9K]3 years ago
6 0

Answer:

5/6 of the time or 50 minutes

Step-by-step explanation:

You might be interested in
If a system of linear equations has no solution, what does this mean about the two lines?​
romanna [79]

Answer:

The lines do not intersect, it is parallel therefore there is no solution.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
A graphic artist has a picture that is 5 inches by 10 inches. The picture
tangare [24]

Answer:

15 inches

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
A college entrance exam company determined that a score of 24 on the mathematics portion of the exam suggests that a student is
seraphim [82]

Answer:

a) The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at  0.01% level of significance

<em>They score is above 24 on the math portion of the​ exam</em>

<em>b) </em>

<u><em>Null Hypothesis</em></u>: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

<u>Alternative Hypothesis: </u>H₁: μ ≠ 24

<u>Step-by-step explanation:</u>

<u><em>Step(i)</em></u>:-

Given random sample 'n' = 250

Given data sample mean x⁻ = 24.5

Standard deviation = 3.3

<u><em>Null Hypothesis</em></u>: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

<u>Alternative Hypothesis: </u>H₁: μ ≠ 24

test statistic

Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }

Z = \frac{24.5 - 24}{\frac{3.3}{\sqrt{250} } } = \frac{0.5}{0.2087} = 2.397

a) 99% or 0.01% level of significance

Level of significance ∝ = 0.01

Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.005} =2.576

The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at  0.01% level of significance

<em>They score is above 24 on the math portion of the​ exam</em>

b) 95% or 0.05% level of significance

Level of significance ∝ = 0.05

Z_{\frac{\alpha }{2} } = Z_{\frac{0.05}{2} } = Z_{0.025} = 1.96

The Z -value 2.397 > 1.96 at 95% or 0.05% level of significance

Null hypothesis is Rejected at  0.05% level of significance

<em>They score is below 24 on the math portion of the​ exam</em>

6 0
3 years ago
Solve for x<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%20-%206%7D%7B4%7D%20%20%3D%20%20%5Cfrac%7B2x%20%2B%205%7D%7B3%7
Marizza181 [45]

Answer:

x = 9.5

Step-by-step explanation:

Given

\frac{4x-6}{4} = \frac{2x+5}{3} ( cross- multiply )

3(4x - 6) = 4(2x + 5) ← distribute parenthesis on both sides

12x - 18 = 8x + 20 ( subtract 8x from both sides )

4x - 18 = 20 ( add 18 to both sides )

4x = 38 ( divide both sides by 4 )

x = \frac{38}{4} = 9.5

6 0
3 years ago
on her last 3 terms in algebra, Myka had scored a 83,87, and a 92. What score does she need to get on her text test if she wants
Ugo [173]
At least a 98 or it won’t be above a 90
8 0
2 years ago
Other questions:
  • Annabelle uses 15 cups of orange juice when she makes fruit punch. Each pitcher of punch contains 154 cups of orange juice. How
    11·1 answer
  • What is the place value of 0 in 5.820
    7·1 answer
  • What is <br> AE?<br> Enter your answer in the box.
    11·1 answer
  • Do 9 m 15 m and 9 m make a triangle ?
    10·2 answers
  • Solving polynomial equations by factoring Solve: 1/2x^2+5x+25/2=0 Full explanation please, thanks
    8·1 answer
  • Solve this quadratic equation using the quadratic formula. 2x2 - 10x + 7 = 0
    10·1 answer
  • kelli and her faimly went to the beach for a vacation. they drove 293 miles 7 hours to get theredid they drive each hour
    9·2 answers
  • There can be 2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • On the last day of the school book fair, all pencils were one set price and all books were a different set price. Sammy bought 2
    12·1 answer
  • This graph shows the amount of sugar and the total calories in 8 items on the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!