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3 years ago

Amir ran the first 200-meter leg of the relay race with a speed of 8,260 millimeters per second. Ryder ran the last 200-

Mathematics

1 answer:

kkurt [141]3 years ago

3 0

Step-by-step explanation:

Convert the speeds of Amir and Ryder to meters per second (m/s).

Amir:

8260 mm/s = 8.260 m/s

Ryder:

930 cm/s = 9.30 m/s

9.30 m/s > 8.260 m/s, so:

Ryder ran approximately 1 meter per second faster than Amir.

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On Sunday, a local hamburger shop sold a combined total of 536 hamburgers and cheeseburgers. The number of cheeseburgers solid w

aleksklad [387]

Answer:

134 hamburgers sold on Sunday

Step-by-step explanation:

x+3x=536

4x=536

4x/4=x, 536/4=134

x=134

3 0

3 years ago

The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many students are girls?

AnnyKZ [126]

Step-by-step explanation:

3+5=8

40÷8=5

5x5=25 girls

5x3=15

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3 years ago

Read 2 more answers

How much did the roses cost?

Lubov Fominskaja [6]

Answer: The roses costed $9

Step-by-step explanation:

3 multiplied by 3 equals 9

1 multiplied by 6 equals 6

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3 years ago

A random sample of 11 university students produced the following data, where x is the minutes spent studying per day, and y is t

SIZIF [17.4K]

Answer:

16.373,16.4

Step-by-step explanation:

Given that a random sample of 11 university students produced the following data, where x is the minutes spent studying per day, and y is the first exam score (out of a maximum of 100 points).

x y

11 39

13 55

14 43

17 46

19 69

22 75

24 77

25 78

28 77

31 93

34 92 Observations 11

ANOVA

df SS MS F Significance F

Regression 1 3214.095153 3214.095153 69.46052448 1.59367E-05

Residual 9 416.4503017 46.27225574

Total 10 3630.545455

Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

Intercept 16.37281677 6.48384963 2.525169105 0.0324919 1.705329914 31.04030362 1.705329914 31.04030362

x 2.369323595 0.28428592 8.33429808 1.59367E-05 1.726224167 3.012423023 1.726224167 3.012423023

We get regression line as y =2.369x+16.373

a) value of intercept = 16.373

b) 16.4

8 0

3 years ago

Simplify the expression 4(2+9x−1)

lapo4ka [179]

multiply everything in the parentheses by 4 so, 8+36x-4

8 0

3 years ago