Please answer all these questions right I can’t do them ‍♀️

Mathematics

1 answer:

eduard2 years ago

3 0

He just wanted the points

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What is the result of adding these two equations? 4x – 4y = -2 –9x – 4y = -3

kondaur [170]

Answer: -5x-8y=-5

Step-by-step explanation:

add right sides of equation and even them with result of adding right sides of equation

4x-4y-9x-4y=-2-3

-5x-8y=-5

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2 years ago

4(x + 1) − 7x = −3 (x − 1) + 1

grigory [225]

The apartment complex has 20 apartment per buildings 4 apartment are 3 bedroom apartment, 7 are 2 bedroom unit,and 9 apartment are 1 bedroom units.if the apartment complex builds 50 buildings how many 3 bedroom units would they have?

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3 years ago

Rewrite 9^4 * 10^4 as a single power

Vlada [557]

Answer:

90^8

Step-by-step explanation:

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3 years ago

Find the acute angle formed by line 2y=x+1

givi [52]

Answer:

26.57°

Step-by-step explanation:

$2y = x + 1 \\ y = \frac{1}{2} x + 1 \\ equating \: it \: with \\ y = mx + b \\ slope \: m = \frac{1}{2} \\ \because \: \tan \theta = m \\ \therefore \: \tan \theta = \frac{1}{2} = 0.5 \\ \therefore \: \theta = {tan}^{ - 1} (0.5) \\\therefore \: \theta = {tan}^{ - 1} ( \tan \: 26.565051177 \degree) \: \\ \\ \huge \red{ \boxed{\therefore \: \theta = 26.57 \degree}}$

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2 years ago

С 60 mm 25 mm What is the length of the hypotenuse?

Anestetic [448]

Answer:

65mm

Step-by-step explanation:

From the Pythagorean theorem, we can write it as sqrt(60^2+25^2) which is 65.

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2 years ago