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Natasha2012 [34]
3 years ago
7

Pls help urgently extra points and mark w

Mathematics
2 answers:
8_murik_8 [283]3 years ago
7 0

Answer:

The answer is 62 = 2 × 31...........

navik [9.2K]3 years ago
7 0

Answer:

second one

Step-by-step explanation:

first answer:2x2=4x17=68

second answer: 2x31=62

third and fourth answer: there are composite numbers, therefore they are wrong

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45% of c is 90. <br> Find the value of c.
alisha [4.7K]

Answer:

200 = c

Step-by-step explanation:

100/45=2.2.

2.2x90= 200.

4 0
3 years ago
A trucking firm has a large inventory of spare parts that have been in storage for a long time. It knowsthat some proportion of
Debora [2.8K]

Answer:

0.1546\leq \widehat{p}\leq 0.3513

Step-by-step explanation:

The firm tests 75 parts, and finds that 0.25 of them are notusable

n = 75

x = 0.25 \times 75 = 18.75≈19

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{19}{75}

\widehat{p}=0.253

Confidence level = 95%

So, Z_\alpha at 95% = 1.96

Formula of confidence interval of one sample proportion:

=\widehat{p}-Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}\leq \widehat{p}\leq \widehat{p}+Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}

=0.253-(1.96)\sqrt{\frac{0.253(1-0.253)}{75}}\leq \widehat{p}\leq0.253+(1.96)\sqrt{\frac{0.253(1-0.253}{75}}

Confidence interval =0.1546\leq \widehat{p}\leq 0.3513

7 0
3 years ago
Please help it’s very cunning
gregori [183]
The answer to you question is B
7 0
3 years ago
The longest sides of a rectangle are 3 inches less than six times the length of the shorter sides. The perimeter of the rectangl
kirill115 [55]

the shorter sides are 4 inches and the longer sides are 21 inches long

7 0
3 years ago
Two cars left at the same time. One car travels at an average of 7 miles per hour faster than the other one. First car got their
Elena L [17]

Answer:

s=50.999 and you can round it to s=50.1

Step-by-step explanation:

8 0
3 years ago
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