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3 years ago

Find the value of y.

Mathematics

1 answer:

bonufazy [111]3 years ago

7 0

Answer:

y = -1

Step-by-step explanation:

It´s an equilateral triangle

then:

2y + 6 = 4

2y = 4 - 6

2y = -2

y = -2/2

y = -1

Check:

2*-1 + 6 = 4

-2 + 6 = 4

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X + 4y = 16 and 2x + 12y = 48 What is the value of x+y in the solution of the system?

likoan [24]

Answer:

x = − 4y + 16

x = − 6y + 24

Step-by-step explanation:

Let's solve for x.

x + 4y = 16

Step 1: Add -4y to both sides.

x + 4y + − 4y = 16 + − 4y

x = − 4y + 16

Answer:

x = − 4y + 16

Let's solve for x.

2x + 12y = 48

Step 1: Add -12y to both sides.

2x + 12y + − 12y = 48 + − 12y/2x= − 12y + 48

Step 2: Divide both sides by 2.

2x/2 = − 12y + 48/2x = − 6y + 24

Answer: x = − 6y + 24

( I hope this was helpful) >;D

8 0

3 years ago

Simplify 1/4-7i to get a complex number in standard a + bi form.

Romashka [77]

Answer:

$\frac{1}{4-7i}=\frac{4}{65}+\frac{7}{65}i$

Step-by-step explanation:

we are given

$\frac{1}{4-7i}$

Firstly, we will get rid of imaginary term from denominator

so, we will multiply conjugate to both top and bottom term

$\frac{1}{4-7i}=\frac{1\times (4+7i)}{(4-7i)\times (4+7i)}$

$\frac{1}{4-7i}=\frac{4+7i}{4^2-(7i)^2}$

$\frac{1}{4-7i}=\frac{4+7i}{16+49}$

$\frac{1}{4-7i}=\frac{4+7i}{65}$

we can also write as

so, we get

$\frac{1}{4-7i}=\frac{4}{65}+\frac{7}{65}i$

7 0

3 years ago

How to solve this question

Yuki888 [10]

If the radical, is the same in this case ✔️10, simply add or subtract the whole numbers or the coefficients of the radicals regularly, the solution would be 1✔️10 or simply ✔️10.

4 0

3 years ago

2. Jerry has a new job and earns a salary of $45,000. Victoria has a new job and earns a salary of $54,000. Jerry will receive a

Sergio039 [100]

Answer:

Jerry will earn the same as Victoria in 9 years.

Step-by-step explanation:

Giving the following information:

Jerry:

Net income= 45,000 + 2,500x

Victoria:

Net income= 54,000 + 1,500x

x= number of years

Now, we need to equal both formulas and isolate x:

45,000 + 2,500x = 54,000 + 1,500x

1,000x = 9,000

x= 9

Jerry will earn the same as Victoria in 9 years.

Prove:

Jerry= 45,000 + 2,500*9= $67,500

Victoria= 54,000 + 1,500*9= $67,500

7 0

3 years ago

___ supports a main idea by providing clear evidence or proof without using numbers.

iren [92.7K]

B) An example..... It would be better to explain and give an example to what your trying to say.

4 0

4 years ago