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3 years ago

I need help ? How can I solve this ?

Mathematics

2 answers:

zvonat [6]3 years ago

5 0

The answer is a if you get it wrong it's all on me

Arturiano [62]3 years ago

3 0

Answer: (B) ∠A = 146, ∠B = 21, ∠C = 13

Step-by-step explanation:

∠A = 40x - 14 Given

∠B = 29 - 2x Given

∠C = 9 + x Given

∠A + ∠B + ∠C = 180° Triangle Sum Theorem

(40x - 14) + (29 - 2x) + (9 + x) = 180 Substitution

39x + 24 = 180 Simplify (added like terms)

39x = 156 Subtraction Property of Equality

x = 4 Division Property of Equality

∠A = 40x - 14 = 40(4) - 14 = 160 - 14 = 146

∠B = 29 - 2x = 29 - 2(4) = 29 - 8 = 21

∠C = 9 + x = 9 + 4 = 13

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What is the radius of a circle with a circumference of 81.64 feet.

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

Your answer

Circumference = 2 * π* r = 81.64

r = 12.99 → 13

Mark it as Brainlist answer. Follow me.

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3 years ago

If you want to put a 4x8 piece of plywood through a 3 foot square opening in your ceiling by turning it diagonally is the openin

Leni [432]

Answer: Yes, the 3 foot 3 foot square opening in your ceiling is big enough to insert a 4x8 piece of plywood.

In a 3x3 foot square, we can form two right triangles with same diagonal side or hypotenuse. .

Using the Pythagorean theorem/formula, we can find the length of the hypotenuse or the longest side of the triangle ( c) given the two sides a and b

Substitute values a=3 and b=3 to formula

a^2^+b^2^=C^2^=

3^2^+3^2^=C^2^=

9+9= C^2^

C= square root of 18

C=4.24

A 4x8 piece of plywood can be inserted in a 4.24 opening diagonally.

8 0

4 years ago

Triangle A, B, C, is shown. Angle C, A, B is 70 degrees. Angle A, B, C is 70 degrees.

Xelga [282]

Answer:

40°

Step-by-step explanation:

<CAB=70°

<ABC=70°

<ACB+ <CAB+ <ABC=180(sum of angles in a triangle)

<ACB +70+70=180

<ACB+140=180

<ACB=180-140

<ACB=40°

5 0

3 years ago

Solve for g. -6g + 3g + 12 > -18

makvit [3.9K]

$-6g + 3g + 12 \ \textgreater \ -18
$
Start by combining like terms on both sides
-6+3=-3
Now we have:
$-3g+ 12 \ \textgreater \ -18$

To isolate g we need to subtract 12 from both sides -18-12= -30

Now we have
$-3g \ \textgreater \ -30$

Divide both sides by -3 to isolate g, now we have:

$g\ \textgreater \ -10$
When we divide an inequality by a negative we flip the sign so:
$g\ \textgreater \ -10$
becomes:
$g\ \textless \ 10$

Final answer:

 $g\ \textless \ 10$

5 0

3 years ago

Read 2 more answers

Find the domain of y=4√4x+2 a) x ≥ 1/2 b) x > 1/2 c) x ≥ -2 d) x ≥ -1/2

Rudiy27

I hope this helps with your question.

3 0

4 years ago