3 years ago

Simplify the screenshot below

Mathematics

1 answer:

djyliett [7]3 years ago

6 0

Answer:

-4x - 16y

Step-by-step explanation:

Given:

-4(3x - 2x + 4y)

Required:

Simplify

Solution:

To simplify, apply the distributive property by multiplying every term that is inside the brackets by -4

Thus:

-4*3x -4*-2x -4*+4y

-12x + 8x - 16y

Add like terms

-4x - 16y

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A train leaves Los Angeles at 2 p.m. heading north at 50 mph. If the next train leaves three hours later and also heads north at

Mamont248 [21]

Since the first train has been travelling for 3 hours, we have the following equations:
$d=50t+3*50=50t+150$
$d=60t$

We want to know when they will be equal, so set these equal to eachother:
$60t=50t+150$
$10t=150$
$t=15$

So 15 hours after the second train leaves, they will be at the same distance. This is at 8AM since the second train leaves at 5PM.

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3 years ago

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Calculate the measure of the major arc MPN.

34kurt

Answer:

310°

Step-by-step explanation:

The sum of arcs around a circle is 360°.

MPN +MN = 360°

MPN = 360° -MN . . . . . . . . subtract MN

MPN = 360° -50° = 310° . . . fill in the given value

The measure of major arc MPN is 310°.

4 0

2 years ago

Help solve for x. round to the nearest tenth

Llana [10]

Answer:

x = 3.7

Step-by-step explanation:

Apply trigonometric function to find x

Reference angle = 24°

Opposite = x

Hypotenuse = 9

This, apply SOH:

Sin 24 = Opp/Hyp

Sin 24 = x/9

9 × Sin 24 = x

3.66062979 = x

x = 3.7 (nearest tenth)

4 0

2 years ago

IM SOOOO STUCKKKK HELLPPPPPPPPPPP!!

KonstantinChe [14]

Answer:

Step-by-step explanation:

x² = 16² + 30² - 2(16)(30)cos 30°

x² = 256 + 900 - 960(0.866)

x² = 1156 - 831.36

x² = 324.64

x = 18.02

Approx. 18

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3 years ago

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Directions: Select all correct answers.

Akimi4 [234]

Answer:

Step-by-step explanation:

6 0

1 year ago