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3 years ago

-3/4 = x/26 need a explanation please

Mathematics

1 answer:

Step2247 [10]3 years ago

6 0

Answer:

x = 19.5

Step-by-step explanation:

$\frac{-3}{4} = \frac{x}{26}$

<em>cross multiply</em>

-3(26) = 4(x)

<em>open the parenthesis</em>

-78 = 4x

<em>divide both sides of the equation by 4</em>

-78/4 = x

-19.5 = x

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3 years ago

Read 2 more answers

2y-1/-3 =-5 prove y=8 <br> What are the statements and reasons for this questions?

Paraphin [41]

Answer:

I will provide the steps below.

Step-by-step explanation:

First, You will need to plug in the 8.

2(8)-(1/-3)=-5

Multiply

16-(-1/3)=-5

If we have two negitive it turns into possitive.

16+1/3=-5

This statement is not true becuase if y=8 the equation will be (16+1/3)=5

*Make sure your giving me the right eqution otherwise this statment is false.*

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3 years ago

What is the answer to 4+1/6n=3

Stolb23 [73]

Answer: n=-6

Step-by-step explanation:

First you have to isolate the variable

4+1/6n=3

So you have to subtract 4 from both sides to get

1/6n=-1

Now all you have to do is divide both sides by 1/6

-1 divided by 1/6 =-6

So n=-6

6 0

4 years ago

Karl starts the engine on his small private airplane. The engine drives a propeller with a radius of 9 feet and its centerline 1

Volgvan

Answer: The height of one propeller tip is 3.68 feet when t= 3.5 minutes.

Step-by-step explanation:

Given: The height of one propeller tip as a function of time is given by $h = 12.5 + 9 sin(750t)$ ), where h is the height in feet and t is the time in minutes.

Put t = 3.5 , we get

$h=12.5 +9 \sin (750\times3.5)\\\\=12.5+9\sin (2625)\\\\=12.5+9(-0.9802)\\\\=12.5-8.8218=3.6782\approx3.68$

Hence, The height of one propeller tip is 3.68 feet when t= 3.5 minutes.

4 0

3 years ago

One week Beth bought 3 apples and 8 pears for 14.50. The next week she bought 6 apples and 4 pears and paid 14$ find the cost of

neonofarm [45]

Cost of 1 apple is $ 1.5 and cost of 1 pear is $ 1.25

<h3><u>Solution:</u></h3>

Let "a" be the cost of 1 apple

Let "p" be the cost of 1 pear

Given that,

<em><u>One week Beth bought 3 apples and 8 pears for 14.50</u></em>

So we can frame a equation as:

3 apples x cost of 1 apple + 8 pears x cost of 1 pear = 14.50

$3 \times a + 8 \times p = 14.50$

3a + 8p = 14.50 ----- eqn 1

<em><u>The next week she bought 6 apples and 4 pears and paid 14$</u></em>

So we can frame a equation as:

6 apples x cost of 1 apple + 4 pears x cost of 1 pear = 14

$6 \times a + 4 \times p = 14$

6a + 4p = 14 ---- eqn 2

<em><u>Let us solve eqn 1 and eqn 2 to find values of "a" and "p"</u></em>

Multiply eqn 2 by 2

12a + 8p = 28 ---- eqn 3

Subtract eqn 1 from eqn 3

12a + 8p = 28

3a + 8p = 14.50

(-)----------------

9a = 13.5

From eqn 1,

3a + 8p = 14.50

3(1.5) + 8p = 14.50

4.5 + 8p = 14.50

8p = 10

Cost of 1 apple is $ 1.5 and cost of 1 pear is $ 1.25

4 0

3 years ago