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3 years ago

What is the value of a

Mathematics

2 answers:

Naya [18.7K]3 years ago

5 0

Elaborate the question. I don’t see the graph or diagram or anything

ZanzabumX [31]3 years ago

4 0

elaborate the question.

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Two groups of tourists are on the same floor of a skyscraper they are visiting, and they board adjacent elevators at the same ti

Mariulka [41]

Let time be x distance be y

140x=y-(1)
290x=360-y-(2)

Put value in eq(2)

$\\ \rm\longmapsto 290x=360-(140y)$

$\\ \rm\longmapsto 440x=360$

$\\ \rm\longmapsto x=1.2min$

Put it in eq(1)

d=1.2(140)=168m

7 0

2 years ago

What is A, B, and C?

marta [7]

Answer:

A = 46

B = 134

C = 78

Step-by-step explanation:

5 0

3 years ago

Can some one answer this Answer please?

solmaris [256]

Answer
40
Explanation
It’s 40 because if you do 20/3 x 2/2 you will get 40/6

3 0

3 years ago

Find the angle between the given vectors to the nearest tenth of a degree. u = (8, 4), v = (9, -9)

Usimov [2.4K]

Answer:

71.6 degrees

Step-by-step explanation:

The formula for calculating the angle between two vectors is expressed as;

u.v = |u||v|cos theta

u.v = (8, 4).(9, -9)

u.v = 8(9)+4(-9)

u.v = 72-36

u.v = 36

|u| = √8²+4²

|u| = √64+16

|u| = √80

|v| = √9²+(-9)²

|v| = √81+81

|v| = √162

36 = √80*√162 cos theta

36 = √12960 cos theta

36 = 113.84 cos theta

cos theta = 36/113.84

cos theta = 0.3162

theta = arccos (0.3162)

theta = 71.6 degrees

Hence the angle between the given vectors is 71.6 degrees

7 0

3 years ago

Read 2 more answers

Three students, Matthew, Thompson and Amos shared #15000 in the ratio of 5:2:x respectively. If Matthew's share is 7500, calcula

jasenka [17]

Answer:

The value of x is 3.

Step-by-step explanation:

Matthew earned 7500 of 15000, which is exactly half the total amount, meaning that the fraction corresponding to his earnings is 1/2.

Rate of 5:2:x, with number 5 corresponding to Matthew, mean that his fraction of the earnings, in function of x is given by:

$\frac{5}{5 + 2 + x} = \frac{5}{7 + x}$

Both fractions are equal, so:

$\frac{5}{7 + x} = \frac{1}{2}$

Applying cross multiplication:

$7 + x = 10$

$x = 10 - 7$

$x = 3$

The value of x is 3.

5 0

3 years ago