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ki77a [65]
3 years ago
11

When Marco swim, the number of calories burned after time x, In minutes, is given by the equation

Mathematics
1 answer:
Cloud [144]3 years ago
4 0
Answer : 4. 576


Y= 330 + 8.2(30)

330 +246

576




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Add the two expressions. 8k + 4 and 3k + 8 Enter your answer in the box.
GREYUIT [131]

Answer:

11k +12

Step-by-step explanation:

8k + 4 and 3k + 8

Combine like terms

8k + 4 + 3k + 8

8k+3k + 4+8

11k +12

4 0
3 years ago
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 260 vinyl​ glov
yawa3891 [41]

Answer:

Step-by-step explanation:

pop 1 n₁ = 260, p₁ = 58% = 0.58

pop 2 n₂ = 260, p₂ = 8% = 0.08

Null hypothesis: p₁ ≤ p₂

Alternative hypothesis: p₁ > p₂

The test statistic : p₁-p₂ / √{p-sample (1 - p-sample) (1/n₁ + 1/n₂)}

where p-sample is sample proportion = p₁n₁ +p₂n₂ / n₁+n₂

Thus, p-sample = 0.58x260 +0.08x260 / 260+260 =150.8+20.8 / 520 = 171.6 / 520 = 0.33.

Thus, the test statistic is (0.58 - 0.08) / √[0.33 (1-0.33) (0.0038+0.0038)

  = 0.5 / √[0.33(0.67) (0.0076)

= 0.5 / √0.00168036

= 0.5 / 0.04099

= 12.20

P = P(Z>12.20) = 1-P(Z≤12.20) at a significance level of 0.1= the p-value is less than the hypothesized thus, we have sufficient evidence to reject the null hypothesis and concluding that vinyl gloves have a greater virus leak than latex gloves.

5 0
3 years ago
While on vacation, Kayla goes for walks 3 times a day. Her morning walk is 1 1/2 times the distance of her afternoon walk. Her e
natta225 [31]

Answer: 2 miles

Step-by-step explanation:

Afternoon-x; morning- 1.5x; Evening: 1/2x

Make a equation: 1.5x+x+1/2=6

2.5x+1/2x=6

5/2x+1/2x=6

6x=12

x=2

6 0
3 years ago
A negatively charged balloon moves close to another balloon. They then repel each other. What can be said about the other balloo
lana66690 [7]

Answer: B: It has a negative charge.

Step-by-step explanation:

According to theory espoused by the French physicist, Charles-Augustin de Coulomb, like charges charges will repel each other and unlike charges will attract one another.

This means that objects with negative charges will repel each other. As the first balloon in the question was negatively charged, it would only repel the other balloon if it was negatively charged as well.

4 0
3 years ago
complete the puzzle by unscrambling the letters below to reveal words from the vocabulary list at the beginning of the chapter
Marina CMI [18]

But what are we meant to unscramble?

By the way, if you haven’t noticed this is maths not english

7 0
3 years ago
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