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3 years ago

Please help me now plz I will mark you brainliest

Mathematics

1 answer:

cricket20 [7]3 years ago

8 0

Answer:

B.) x=5

Step-by-step explanation:

Use the Pythagorean theorem. Since it isosceles, both values of x are the same. Split 6 in half (because perpendicular bisector).Insert values:

$a^2+b^2=c^2\\3^2+4^2=x^2\\9+16=x^2\\25=x^2\\5=x$

X is equal to 5.

Done.

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Definition:A sailboat set a course of N 25° E from a small port along a shoreline that runs north and south. Sometime later the

kicyunya [14]

Answer:

S 75°E

S 55°E

Step-by-step explanation:

Take the law if sines of a triangle:

$\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}$

Where,

a = 28 miles

B = 25°

b = 12 miles

First solve for A, using the law of sines:

$\frac{a}{sinA} = \frac{b}{sinB}$

$\frac{28}{sinA} = \frac{12}{sin25}$

Cross multiply:

$28 sin25 = 12 sinA$

$11.83 = 12 sinA$

$Sin A = \frac{11.83}{12}$

$Sin A = 0.986$

$A = sin^-^1(0.986)$

$A = 80.44 degrees$

Since A = 80.44° find A supplement, A`:

A` = 180 - 80.44

A` = 99.56°

If A` + B < 180°, find C.

Thus,

A` + B = 99.56 + 25 = 124.56

We can see that A` + B < 180

Find C:

C = 180 - (80.44+25) = 74.56° ≈ 75°

C` = 180 - (99.56+25) = 55.44° ≈ 55°

Rewrite in bearing form:

S 75°E

S 55°E

5 0

3 years ago

Can some one plz Solve this. 5 - 2x < 7.

kow [346]

Answer:

x > 1

Step-by-step explanation:

5 - 2x < 7

-5 - 5

-2x < 2

/-2 /-2

(dividing by negative switches the sign)

x >- 1

5 0

3 years ago

Read 2 more answers

The diameter of a semicircle is 2 kilometers. What is the semicircle's perimeter? Use 3.14 for . 50 POINTS OR WHOEVER CAN HELP

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Answer:

12.57 km

happy to help

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The answer is b. 15 & 7

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Dmitrij [34]

Answer:

If the darker, longer lines are going in units of one, then A is equal to -2.

Step-by-step explanation:

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