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3 years ago

What is the value of -3/4 + 2 1/2

Mathematics

2 answers:

densk [106]3 years ago

8 0

1 3/4 is the answer.

scZoUnD [109]3 years ago

8 0

7/4 is your answer. Hope this helps :)

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Help pls - 20pts<br><br> 2020202022020

Gala2k [10]

Your answer would be:
f(8)= 68,594
f(11)= 91,299
f(2)= 38,720
f(17)= 161,743

4 0

3 years ago

Read 2 more answers

Please help me it is due at 11:59

aivan3 [116]

Answer:

angle 4= 20

Step-by-step explanation:

6 0

3 years ago

The pupils of a school came to school by bus by bicycle and on foot . 48% of the pupils came to school by bus and 24% came by bi

yKpoI14uk [10]

Answer:

28%

Step-by-step explanation:

total percent is 100%

we could rewrite the equation as:

48% + 24% + f = 100%

72% + f = 100%(subtract 72 on both side)

f = 28%

5 0

3 years ago

The velocity v of an object rolled down an inclined plane is given by the formula v=

drek231 [11]

Answer:

d = v/53

Step-by-step explanation:

Divide both sides by 53 to make d the subject of the formula

7 0

3 years ago

Alex is a member of the school track and field team. His times for running various distances are shown. Create a scatter plot fo

frozen [14]

Answer:

(1) Please find attached the graph of the data

(2) 160.396 m

(3) The correlation that exist is a straight line correlation

Step-by-step explanation:

The given data are;

Distance, Time

(m), (s)

50, 6.1

100, 12

150, 18.3

200, 25.2

250, 31.7

(2)

Based on the linear regression formula, we have;

$b = \dfrac{N\sum XY - \left (\sum X \right )\left (\sum Y \right )}{N\sum X^{2} - \left (\sum X \right )^{2}}$

$b = \dfrac{5 \times 17215 - 93.3 \times 750}{5 \times 2156.03 -8704.89} = 7.758$

$a = \dfrac{\sum Y - b\sum X}{N}$

$a = \dfrac{750 - 7.7581 \times 93.3}{5}= 5.234$

The line is

y = 7.7581×x+5.234

When t = 20 s, we have

y = 7.7581*20+5.234 = 160.396 m

(3) The correlation that exist is a straight line correlation

3 0

3 years ago