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3 years ago

I'm need help a question and I'm confuse.

Mathematics

1 answer:

ipn [44]3 years ago

7 0

Answer:

Step-by-step explanation:

Since angle ABD is 133 degrees and the sum of the angles in a triangle is 180 degrees, it means that

m∠ DAB + 133 + 22 = 180

m∠ DAB = 180 - 155 = 25 degrees

Also, ∆ ADC is an isosceles triangle because two of its sides are equal. It also means that the base angles are equal. Thus,

m∠ A = m∠ B

Therefore,

m∠ A + m∠ B + angle D = 180

m∠ A + m∠ B = 180 - 22 × 2

m∠ A + m∠ B = 180 - 44 = 136

m∠ A = m∠ B = 136/2 = 68 degrees

m∠ CAB + m∠ DAB = m∠ A

Therefore,

m∠ CAB = 68 - 25 = 43 degrees

Since ∆ ABC is isosceles, then

m∠ CAB = m∠ ACB

m∠ ACB = 43 degrees

m∠ ABC = 180 - (43 × 2) = 180 - 86

m∠ ABC = 94 degrees

m∠ BCD = 68 - m∠ ACB

m∠ BCD = 68 - 43 = 25 degrees

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I need help please help me :(

mario62 [17]

Answer:

A=9

Step-by-step explanation:

15÷(3+2)×3

=15÷5×3

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Hope this helps.

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2 years ago

What is the simplified form of the expression (6^-4)^-9/6^6?

aleksley [76]

Answer:

$(\frac{1}{1296} )^{\frac{729}{64} }$

Step-by-step explanation:

I am assuming this problem reads $(6^{-4}) ^{-\frac{9}{6}^6 }$

So let's start on the outside and work our way towards the middle
Starting with the $(-\frac{9}{6} )^{6}$ , this can be simplified to $\frac{729}{64}$

Now we have $(6^{-4})^\frac{729}{64}$

Now simplifying what is inside the parenthesis we get $\frac{1}{1296}$
Combining what we have the simplified for of the problem becomes: $(\frac{1}{1296} )^{\frac{729}{64} }$

6 0

2 years ago

Read 2 more answers

You are taking hang-gliding lessons. The cost of the first lesson is one and a half times the cost of each additional lesson. Yo

kow [346]

So, givens: total lesson cost of $260, total lessons taken are 6, and the first lesson costs 1.5 (or 3/2) as much as the additional lessons.

First thing to do is to figure out how many additional lessons are in that, which are 5.

Then you can make a 1 variable equation with the information you have. I’m using x as my variable.

260= 3/2x + 5x

Combine like terms.

260 = 13/2x

Divide both sides by 13/2 (treat it as a fraction, and if your calculator cannot make fractions, then decimal might help for this. 13/2=6.5)

X=40

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2 years ago

A store sells 3 ears of corn for $1 they round prices to the nearest cent.Tell whether you would describe the relationship betwe

ziro4ka [17]

<span>A store sells 3 ears of corn for $1. They round prices to the nearest cent as shown below. Tell whether you would describe the relationship between cost and number of ears of corn as proportional relationship. Justify your answer. Ears of corn 1 2 3 4 Amt charged($) 0.33 0.67 1.</span>

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3 years ago

3.x + y = 11<br> Y = x + 3

PSYCHO15rus [73]

Answer:

x = 2

Step-by-step explanation:

3.x + y = 11 (eq 1)

Y = x + 3 (eq 2)

sub 2 into 1

3x + x + 3 = 11

4x + 3 = 11

4x = 8

x = 2

4 0

3 years ago