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STALIN [3.7K]
3 years ago
13

May you please help me with number 12 a. and b. and show work. thank you

Mathematics
2 answers:
notka56 [123]3 years ago
6 0
(a)7x4=28
2x2=4
28-4=24
24-1=23 points
(b)20/4=7 correct answers
marshall27 [118]3 years ago
5 0
Pretty easy actually so because he says for every correct answer he gets he gets 4 points and he got 7 right to 4x7 = 28 so he has 28 right there then has 2 wrong answers so minus 2 from 28 you get 26 then minus another 2 cause he got 2 wrong and the = 24 then one point for unanswered so that would be 23.

Answer to question A = 23!

Then you would have to get at least 7 questions right and 3 questions wrong. Hope this helps! ;D

Answer to B = 7!
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Pls help asap, whoever answers gets brainliest, 5 stars, and a thanks!
Irina18 [472]

Answer:

A. he should subtract 1 1\2 instead of adding it

B. he should subtract 1 1\2 instead

C. the answer should be 3 3\22 instead of 6 3\22

Step-by-step explanation:

so to solve for 3 3\22:

4 7\11 - 1 1\2

4 14\22 - 1 11\22

= 3 3\22

4 0
3 years ago
Read 2 more answers
The spinner shown is spun 300 times.
Ann [662]

Answer:

A) 60

B) 72/300

C) 150

Step-by-step explanation:

A) P(green) = ⅕

⅕ × 300 = 60

B) purple: 72

45+37+52+94+72 = 300

Therefore, 72/300

C) 1000 × (45/300)

150

8 0
3 years ago
A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 449.0 gram setting. It
MrRa [10]

Answer:

|Z| = |-1.36| < 1.645 at 0.1 level of significance

The null hypothesis is accepted

A manufacturer of banana chips are filling machine works correctly at the mean 449

Step-by-step explanation:

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

Given mean of the Population(μ) = 449

The Standard deviation of the population(σ) = 22

size of the sample 'n' = 36

mean of the sample(x⁻) = 444

Given the level of significance(α) = 0.1

Critical value Z = 1.645

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

<em>Null hypothesis</em>:H₀:

A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 449.0

(μ) = 449

<em>Alternative Hypothesis</em>:H₁: (μ) ≠ 449

Test statistic

                  Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } } \\= \frac{444-449}{\frac{22}{\sqrt{36} } }

                 = -1.36

<em>Final answer:-</em>

|Z| = |-1.36| < 1.645 at 0.1 level of significance

The null hypothesis is accepted

A manufacturer of banana chips are filling machine works correctly at the mean 449

5 0
2 years ago
Which statement is NOT true about the figure below?
lidiya [134]

Answer:

Step-by-step explanation:

the answer is C

8 0
3 years ago
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natta225 [31]
0.3 x 0.4 = x

Answer: 0.12

6 0
3 years ago
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