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2 years ago

HELP ME PASS!!!! YOULL BE MY HERO FOREVER!!!!!!

Mathematics

2 answers:

Alexus [3.1K]2 years ago

4 0

2(-2y-4)-3y=13

-4y-8-3y=13

-7y=21

y=-3

x=2

substitute three into one of the original two problems and you get 2!

Hope this helped

marishachu [46]2 years ago

4 0

Answer:

all work is shown and pictured

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Solve 152x = 36. Round to the nearest ten-thousandth. 1.7509 2.6466 0.6616 1.9091

Vlad [161]

The answer is 0.6616
Hope it helped :)

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2 years ago

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What is 8^2 + 15^2= c^2

Tasya [4]

Answer:

$8^2\:+\:15^2=\:c^2$

c = 17

Step-by-step explanation:

This is the Pythagorean theorem

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2 years ago

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A triangle was dilated by a scale factor of 6. If sin aº

Pavlova-9 [17]

Answer:

24 units

Step-by-step explanation:

A triangle was dilated by a scale factor of 6. If sin a° = four fifths and segment DE measures 30 units, how long is segment EF?

triangle DEF in which angle F is a right angle, angle D measures a degrees, and angle E measures b degrees

15.5 units

24 units

30 units

37.5 units

From the description:

angle D measures a degrees

opposite to angle D is side EF

side DE (which measures 30 units) is the hypotenuse of the triangle.

We also know that

$\sin (a) = \frac{4}{5}$

$\sin (a) = \frac{opposite}{hypotenuse}$

From definition:

$\sin (a) = \frac{opposite}{hypotenuse}$

Replacing:

$\frac{4}{5} =\frac{ EF}{DE} \\\\EF = \frac{4}{5} *DE\\\\EF = \frac{4}{5} *30 \\\\= 24 units$

8 0

3 years ago

Need help I don’t understand new topic answers please

goblinko [34]

1) c= 3.5cm × 22/7

c= 77cm/7 = 11cm

2) c= 2×3.14×5cm

= 6.28× 5cm

=31.4cm

3) L=180/360 × 22/7 × 3cm

= 1/2 × 22/7 ×3cm

=4.71 cm

4) c=12cm ×3.14

=37.68cm

5) c = 4.5cm × 3.14

=14.13cm

6) c = 6.7cm × 3.14

= 21.038cm

6 0

2 years ago

three student share a townhouse their electric bill for october was 3.87 less than the september bill. the total of both bills i

leva [86]

Answer: 40.27

Step-by-step explanation:

Let their September bill be x

Therefore, the October bill will be = x - 3.87.

Therefore, the addition of both bills will be:

x + (x - 3.87) = 237.75

x + x - 3.87 = 237.75

2x - 3.87 = 237.75

2x = 237.75 + 3.87

2x = 241.62

x = 241.62/2

x = 120.81

Therefore, September bill was 120.81

Since the 3 students share the bull equally, the amount owed by each will be:

= 120.81 / 3

= 40.27

Each person owes 40.27

4 0

2 years ago