All categories

3 years ago

If y=9 when x=7 find y when x=2?

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

3 0

Is that all the information? it could literally be any number with only that.

You might be interested in

Quotient of 1+i/3+4i?

NISA [10]

Answer:

$\dfrac{7}{25} - \dfrac{1}{25}i$

Step-by-step explanation:

I assume you are asking

$\dfrac{1 + i}{3 + 4i}$

although what you wrote means this

$1 + \dfrac{i}{3} + 4i$

Back to what I think is your problem:

$\dfrac{1 + i}{3 + 4i} =$

$= \dfrac{1 + i}{3 + 4i} \times \dfrac{3 - 4i}{3 - 4i}$

$= \dfrac{(1 + i)(3 - 4i)}{(3 + 4i)(3 - 4i)}$

$= \dfrac{3 - 4i + 3i - 4i^2}{9 - 16i^2}$

$= \dfrac{3 - i + 4}{9 + 16}$

$= \dfrac{7 - i}{25}$

$= \dfrac{7}{25} - \dfrac{1}{25}i$

8 0

3 years ago

Please help if you can

Arisa [49]

Answer:

Option D

Step-by-step explanation:

Formula to be used,

Scale factor = $\frac{\text{Dimension of the image rectangle}}{\text{Dimension of the original}}$

By this formula,

$\frac{7}{2}=\frac{\text{Length of the dilated rectangle}}{\text{Length of the original rectangle}}$

$\frac{7}{2}=\frac{L}{22}$

L = $\frac{7\times 22}{2}$

= 77 inches

Similarly, width of the the dilated rectangle = $\frac{7}{2}\times 10$

= 35 inches

Perimeter of the new rectangle = 2(Length + width)

= 2(77 + 35)

= 224 inches

Option (D) will be the correct option.

7 0

3 years ago

Find the measure of angle A

Lapatulllka [165]

Answer:

Step-by-step explanation:

AB and DC are parallel, so ∠B and ∠C are supplementary angles.

∠B = 180°-∠C = 79°

AD and BC are congruent. ∠A = ∠B = 79°

3 0

3 years ago

Did I do this right?

kupik [55]

Answer:

Yes, you did.

Step-by-step explanation:

5 0

3 years ago

Marcus wants to save $378 in order to buy a new electronic keyboard. He plans to save $15.75 every week from his paycheck. Right

geniusboy [140]

Answer:

15.75 * 24 = 378

Step-by-step explanation:

15.75x = 378. We need to first isolate the variable. x = 24. Using this we can make the equation. 15.75 * 24 = 378

7 0

3 years ago