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3 years ago

Help me , I will mark first answer brainliest

Mathematics

2 answers:

lana [24]3 years ago

8 0

Answer:

x=6; ∠b=68°

Step-by-step explanation:

8x+74+2x+56=190

10x+130=190

10x=60

x=6

2x+56

12+56

artcher [175]3 years ago

5 0

X=6 I think it’s the correct answer

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Im not so sure about this. I need help making a proof that is 9 steps long. (See image)

Leona [35]

Step-by-step explanation:

Not entirely sure, but I believe something like this:

∠1 + ∠2 = 180° since they are a linear pair;

Since ∠1 = ∠2, we can say:

∠1 + ∠1 = 180°

2(∠1) = 180°

∠1 = 90°

And since:

∠1 = ∠2

∠2 = 90°

So the angle between t and s is 90°;

An angle of 90° means t and s are perpendicular (⊥)

8 0

2 years ago

Convert 52.0 hm to cm

melamori03 [73]

Answer:

520000 cm

Step-by-step explanation:

multiply the length value by 10000

5 0

3 years ago

Read 2 more answers

Simplify the expression 10(6+2z)+8

elixir [45]

10(6+2z)+8 distribute 10
60+20z+8 add like terms
68+20z is answer since you can’t simplify anything further

5 0

3 years ago

Given: ∠A and ∠B are complementary angles.

Eddi Din [679]

Answer:

- For the statement $-3x=24$ , the reason is: Subtraction property of Equality

- For the statement $x=-8$ , the reason is: Division property of Equality.

- For the statement $m\angle B=-6(-8)-39$ , the reason is: Substitution property of Equality.

Step-by-step explanation:

The missing pictures are attached.

We must remember that:

- The Subtraction property of Equality states that:

$If\ a=b,\ then\ a+c=b+c$

- The Division property of Equality states that:

$If\ a=b,\ then\ \frac{a}{c}=\frac{b}{c}$

- The Substitution property of Equality states that:

$If\ a=b,\ then\ b\ can\ replace\ a$

Knowing this properties we can identify the missing reasons that correctly complete the proof.

- For the statement $-3x=24$ , the reason is:

Subtraction property of Equality

(Because it is obtained by subtracting 66 from both sides of $-3x+66=90$ )

- For the statement $x=-8$ , the reason is:

Division property of Equality

(Because it is obtained by dividing both sides of $-3x=24$ by -3)

- For the statement $m\angle B=-6(-8)-39$ , the reason is:

Substitution property of Equality

(Because it is obtained by substituting the value of "x" into $m\angle B=-6x-39$ )

7 0

3 years ago

Could I have help to find x?

Andreas93 [3]

$\dfrac{16^{x+1}}{8^{2x+2}}=16\\
\dfrac{2^{4x+4}}{2^{6x+6}}=2^4\\
2^{4x+4-6x-6}=2^4\\
2^{-2x-2}=2^4\\
-2x-2=4\\
-2x=6\\
x=-3
$

6 0

3 years ago

Read 2 more answers