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3 years ago

8/v+1/2=7/v what is v?

Mathematics

2 answers:

Svetllana [295]3 years ago

6 0

Answer:

v=2

Step-by-step explanation:

8/v+1/2=7/v

1/2=8/v-7/v

1/2=1/v

(1/2)v=1

v=1/1/2

v=1*2/1

v=2

weqwewe [10]3 years ago

3 0

Answer:

v = - 2

Step-by-step explanation:

Step 1: Multiply all terms by v and cancel:

8 + 1v/2 = 7

Step 2: Simplify both sides of the equation:

1/2 v + 8 = 7

Step 3: Subtract 8 from both sides:

1/2 v + 8 - 8 = 7 - 8

1/2 v = - 1

Step 4: Multiply both sides by 2:

2 * (1/2 v) = (2) * (- 1)

v = - 2

To make sure your answers are correct, review and check your work at least 2 times before coming to a conclusion.

Therefor, the correct answer for <em>v </em>would be - 2.

Hope this helps!

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Round to the nearest tenth.

sammy [17]

Answer:

$c=9.3\ units$

Step-by-step explanation:

step 1

Find the measure of angle A

we know that

The sum of the interior angles in any triangle must be equal to 180 degrees

$A+B+C=180^o$

substitute the given values

$A+110^o+30^o=180^o\\A=40^o$

step 2

Find the length side c

Applying the law of sines

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{12}{sin(40^o)}=\frac{c}{sin(30^o)}$

solve for c

$c=\frac{12}{sin(40^o)}sin(30^o)$

$c=9.3\ units$

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4 years ago

If 5x + 4 = 8x + 10, then x = ?

Liula [17]

Answer:

x = - 2

Step-by-step explanation:

$5x + 4 = 8x + 10 \\ 5x - 8x = 10 - 4 \\ - 3x = 6 \\ x = \frac{6}{ - 3} \\ x = - 2$

7 0

3 years ago

Read 2 more answers

1. 3/4 + 1/3 =

BabaBlast [244]

Answer:

1. 3/4 + 1/3 = 1 1/12

2. 1/6 + 2/3 = 5/6

3. 3/8 + 1/4 = 1/4

4. 1/3 + 2/5 = 11/15

5. 1/8 + 3/4 = 7/8

6. 2/5 + 7/10 = 1 1/10

7. 1/6 + 1/3 + 3/4 = 1

8. 1/10 + 3/10 + 3/5 = 1

9. 3/8 + 5/5 + 1/2 = 7/8

10. 11/16

Step-by-step explanation:

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3 years ago

SMART STUDENT PLEASEEEE

lawyer [7]

Answer:

Therefore,

$BC=y=10.61\ units\\\\AC=x=8.6\ units$

Step-by-step explanation:

Consider a Δ ABC with

m∠ B= 45°

m∠ C = 90°

AB = c = 15 cm

To Find:

BC = a = y ?

Solution:

Triangle sum property:

In a Triangle sum of the measures of all the angles of a triangle is 180°.

$\angle A+\angle B+\angle C=180\\\\\angle B +35+90+=180\\\therefore m\angle A =180-125=55\°$

We know in a Triangle Sine Rule Says that,

In Δ ABC,

$\frac{a}{\sin A}= \frac{b}{\sin B}= \frac{c}{\sin C}$

substituting the given values we get

$\frac{a}{\sin 55}= \frac{b}{\sin 35}= \frac{15}{\sin 90}$

∴ $\frac{y}{\sin 55}= \frac{15}{1}\\\\y=\sin 55\times 15\\\\y=10.606\\\therefore BC = y = 10.61\ units$

Similarly for 'x',

$\frac{x}{\sin 35}= \frac{15}{1}$

$\therefore x =\sin 35\times 15\\\therefore x =0.5735\times 15\\\therefore x =8.6\\$

Therefore,

$BC=y=10.61\ units\\\\AC=x=8.6\ units$

6 0

3 years ago

A racing car can complete an 700 m long lap in 14 s. What is the speed of the <br> car?

ICE Princess25 [194]

Answer:

$\boxed {\tt 50 \ m/s}$

Step-by-step explanation:

To find the speed, divide the distance by the time. We can use the following formula:

$s=\frac{d}{t}$

The racing car completed a 700 meter lap in 14 seconds. So, the distance is 700 meters and the time is 14 seconds.

$d= 700 \ m \\t= 14 \ s$

Substitute the values into the speed formula.

$s=\frac{700 \ m }{14 \ s}$

Divide.

$s= 50 \ m/s$

The speed of the racing car is 50 meters per second

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3 years ago

Read 2 more answers