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3 years ago

-10 + x + 4 - 5 = 7x - 5Step by Step please

Mathematics

2 answers:

poizon [28]3 years ago

4 0

Answer: x=-1

Step-by-step explanation:

−10+x+4−5=7x−5

−10+x+4+−5=7x+−5

(x)+(−10+4+−5)=7x−5(Combine Like Terms)

x+−11=7x−5

x−11=7x−5

Step 2: Subtract 7x from both sides.

x−11−7x=7x−5−7x

−6x−11=−5

Step 3: Add 11 to both sides.

−6x−11+11=−5+11

−6x=6

Step 4: Divide both sides by -6.

−6x

−6

x=−1

kati45 [8]3 years ago

3 0

Answer:

-10 + x + 4 - 5=7x - 5

Combine all like terms (numbers).

-11 + x = 7x - 5

Add 11 to both sides.

x = 7x + 6

Subtract 7x from both sides.

-6x=6

Divide both sides by -6.

x=-1

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marysya [2.9K]

Answer:

1) ΔACD is a right triangle at C

=> sin 32° = AC/15

⇔ AC = sin 32°.15 ≈ 7.9 (cm)

2) ΔABC is a right triangle at C, using Pythagoras theorem, we have:

AB² = AC² + BC²

⇔ AB² = 7.9² + 9.7² = 156.5

⇒ AB = 12.5 (cm)

3) ΔABC is a right triangle at C

=> sin ∠BAC = BC/AB

⇔ sin ∠BAC = 9.7/12.5 = 0.776

⇒ ∠BAC ≈ 50.9°

4) ΔACD is a right triangle at C

=> cos 32° = CD/15

⇔ CD = cos32°.15

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Step-by-step explanation:

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3 years ago

Mark all the statements that are true.

Artyom0805 [142]

Answer:

Option A

Option C

Step-by-step explanation:

A relationship is defined as a function if and only if each element of the "domain" set is assigned only one element of the "range" set. That is, there is only one output value y assigned to each input value x.

The relation x = 3 is not a function because there are infinite output values y, assigned to the same input element x.

(3, 2), (3, 5) (3, 9) (3,10000)

Then the option A is true

Option C is also true, the equation of the line shown is

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3 years ago

I do not get this anyone know???

Allushta [10]

Look at the picture.
$O=12\\A=5\\H=13\\\\\sin B=\dfrac{12}{13}\\\\\cos B=\dfrac{5}{13}\\\\\tan B=\dfrac{12}{5}$

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Inessa05 [86]

Answer:

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Step-by-step explanation:

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Shalnov [3]

Answer:

how would i know the answer

Step-by-step explanation:

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3 years ago

-10 + x + 4 - 5 = 7x - 5Step by Step please​

-10 + x + 4 - 5 = 7x - 5Step by Step please