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Lina20 [59]
3 years ago
12

How do you solve -8= (×+11) ÷ -2

Mathematics
1 answer:
Elena-2011 [213]3 years ago
4 0

Answer:

Isolate x to get the answer.

Step-by-step explanation:

Cancel out the 2 on the left by multiplying both sides by 2.

-8 = (x + 11) / 2

turns into

-16 = (x + 11)

Next, cancel out the 11 by subtracting 11 on both sides.

-16 = (x + 11)

turns into

-27 = x

____________________________________________

Verify the answer:

([-27] + 11) / 2 = -8 ✔

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Suppose that x and y vary inversely and that y=1/6 when x=3. Write a function that models the inverse variation and find y when
juin [17]

Answer:

The Inverse variation states a relationship between the two variable in which the product is constant.

i.e x \propto \frac{1}{y}

then the equation is of the form: xy = k where k is the constant of variation.

As per the given information: It is given that x and y  vary inversely and that y = 1/6 when x = 3.

then, by definition of inverse variation;

xy = k                                      ......[1]

Substitute the given values we have;

3 \cdot \frac{1}{6} = k

\frac{1}{2} = k

Now, find the value of y when x = 10.

Substitute the given values of x=10 and k = 1/2, in [1] we have;

10y = \frac{1}{2}

Divide both sides by 10 we get;

y = \frac{1}{20}

therefore, a function that models the inverse variation is; xy = \frac{1}{2} and value of  y = \frac{1}{20} when x = 10.



4 0
4 years ago
Read 2 more answers
8. Which of these below correctly solves<br> for yin the equation 3x-4y= 7?
Basile [38]

Answer:

y=\frac{3}{4}x-\frac{7}{4}

Step-by-step explanation:

3x-4y=7\\\\3x-3x-4y=7-3x\\\\-4y=7-3x\\\\\frac{-4y=7-3x}{-4}\\\\y=-\frac{7}{4}+\frac{3}{4}x\\\\  \boxed{y=\frac{3}{4}x-\frac{7}{4}}

Hope this helps.

5 0
4 years ago
Question is in the picture <br> please explain
emmainna [20.7K]

Answer:

34160

Step-by-step explanation:

1220x(7x4)=<em>p</em>

1. 7x4=28

2. 1220x28=<em>p</em>

3. 1220x8=9760

4. 1220x2+ a zero at the end=24400

5. 9760+24400=34160.

pls mark as brainliest.

3 0
3 years ago
Choose the missing number to make equivalent fractions. 1/4=?/16 A. 2 B. 4 C. 6 D. 8
klasskru [66]

1/4 is equal to 4/16 so the answer would be B. 4

To solve this you can multiply the denominator and numerator by the same number to get an equivalent fraction. In this case you would divide the denominator of the equivalent fraction we are finding the numerator for (16) by the denominator of the original faction.

?/16 / 4 16/4 = 4

The numerator is 4 making the equivalent fraction 4/16.

Hope this helps!

4 0
3 years ago
What's wrong with this proof that an even number plus an even number is even? Suppose n and m are even numbers. Then n is 2k and
VLD [36.1K]

Answer:

The proof assumes that n=m=2k, which is false in general.

Step-by-step explanation:

If n is an even number, then n=2k for some integer k. In the same way, if m is an even number, then m=2j for some integer j. It is important to write two different letters, k and j, because these integers are not necessarily equal.

For example, take n=10 and m=30. Then k=5 and j=15, so they are different. The fallacy of this proof is that it assumes k=j.

A correct proof would continue like this: by the usual laws of algebra we have that n+m=2k+2j=2(k+j). Since k+j is an integer, n+m=2p for some integer p=k+j, hence n+m is even.

6 0
3 years ago
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