2 years ago

Solve the system with elimination. x - y = 10 3x - 2y = 25

Mathematics

1 answer:

raketka [301]2 years ago

8 0

Answer:

Step-by-step explanation:

{x,y}={5,-5}

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In triangle XYZ, angle Y = 45º and angle Z = 60º. If XZ = 4, then what is XY?

Katena32 [7]

Answer:

$XY = 4.9$

Step-by-step explanation:

Given

$XZ= 4$

$\angle Y = 45$

$\angle Z = 60$

Required

Determine the measure of side XY

To do this, we make use of sine law. This is as follows:

$\frac{a}{\sin\ A} = \frac{b}{\sin\ B} = \frac{c}{\sin\ C}$

In this case:

$\frac{4}{\sin(45)} = \frac{XY}{\sin(60)}$

Cross Multiply

$XY * \sin(45) = 4 * \sin(60)$

$XY * 0.7071 = 4 * 0.8660$

Make XY the subject

$XY = \frac{4 * 0.8660}{0.7071}$

$XY = \frac{3.4640}{0.7071}$

$XY = 4.89888276057$

$XY = 4.9$ -- <em>approximated</em>

3 0

3 years ago

Please show work, i’ll mark as brainliest

bulgar [2K]

Answer:

y=4

x=-3

Step-by-step explanation:

4(-3)-9y=-48

-12-9y=-48

-9y=-36

y=4

x=-3

4 0

3 years ago

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Find the slope of the line that passes through (-46, -41) and (-11, -8).<br>

andre [41]

-8-(-41)/-11-(-46) = 33/35

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3 years ago

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An athlete completes one round of a circular track of diameter 200 m in 40 s what will be the distance covered and displacement

Cloud [144]

Answer:

700π m ~ 2199 m

Step-by-step explanation:

diameter = d = 200 m

2 min 20s = 140 s

1 round / 40 s

140 = 40 * 3 + 20

so the athlete will cover 3 round and half

1 round = d * π

covered = c = 3 * 200 * π + 200/2 * π = 700 * π

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2 years ago

Which graph represents the function?

garri49 [273]

Photomath is good for this type of thing

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3 years ago

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