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3 years ago

Find the difference and reduce to lowest terms: 3/7 - 2/1 =

Mathematics

2 answers:

kherson [118]3 years ago

5 0

Answer:

0.43 - 2 = -1.57

Step-by-step explanation:

You can divide 3 by 7 and get 0.43. Then you can do 0.43 - 2 which equals -1.57

Genrish500 [490]3 years ago

4 0

3/7 - 2/1. 2/1 times7/7. = 14/7
3/7 -14/7= -11/7

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Find the value of n the equation 1/2(n+4)=6

Aliun [14]

Answer:

n = 8

Step-by-step explanation:

1/2(n + 4) = 6

1/2 of n + 2 = 6

6 - 2 = 4

4 × 2 = 8

1/2 of 8 + 2 = 6

4 + 2 = 6

n = 8

6 0

3 years ago

Read 2 more answers

Find the area of the figure.

ryzh [129]

The area of a rhombus is given by the half the product of its two diagonals.

We can see that AC is composed by two parts measuring 14m, so AC = 28m.

Similarly, BD is composed by two parts long 19m each, so BD = 38m.

Half their product is thus

$A = \frac{\overline{AC}\cdot \overline{BD}}{2} = \frac{28\cdot 38}{2} = 14\cdot 38 = 532$

3 0

4 years ago

When Sam gave Clarissa 105 chocolates, Clarissa had 5 times as many chocolates as Sam. They had 504 chocolates altogether. How m

nataly862011 [7]

Answer:

315 chocolate

Step-by-step explanation:

Let Sam's chocolate be S

Let Clariss's chocolate be C

When Sam gave Clarissa 105 chocolates, Clarissa had 5 times as many chocolates as Sam.

This can be written as:

C = 5S

The sum of their chocolate is 504 i.e

S + C = 504

Now, let us determine the chocolate of Clarissa after receiving 105 chocolate from Sam. This can be obtained as follow:

S + C = 504

But: C = 5S

S + 5S = 504

6S = 504

Divide both side by 6

S = 504/6

S = 84.

C = 5S = 5 x 84 = 420

Therefore, Clarissa have 420 chocolate after receiving 105 chocolate from Sam.

Now, to know the amount of chocolate that Clarissa has at first, we simply subtract 105 from the present amount that Clarissa have. This is illustrated below:

Amount of chocolate that Clarissa has a first = 420 – 105 = 315

Therefore, Clarissa had 315 chocolate at first.

6 0

4 years ago

A bag contains 5 blue marbles, 2 black marbles, and 3 red marbles. A marble is randomly drawn from the bag.The probability of no

storchak [24]

P(not black) = 8/10 = 4/5
P(red) = 3/10

7 0

4 years ago

See image for question. Please show workings and diagrams.

ale4655 [162]

Answer:

a) 7 km
b) 298°

Step-by-step explanation:

See attached diagram (not to scale).

All given details reflected.

a) Find the measure of XZ using the law of cosines:

y = √(5² + 3² - 2*5*3*cos 135°) = 7 km (rounded)

b) Now using the law of sines find the measure of angle X:

7 / sin 135° = 5 / sin X
sin X = 5 sin 135° / 7
m∠X = arcsin (5 sin 135° / 7 ) = 28° (rounded)

The bearing of Z from X is:

270° + 28° = 298°

3 0

4 years ago